US2090852A - Combined typewriting and comput - Google Patents

Description

1937- H. L. PITMAN COMBINED TYPEWRITING.AND COMPUTING MACHINE Original Filed April '12. 1932 4 Sheets-Sheet 1 lnuenfar: if

llfforn Aug. 2 4, 1937. plTMAN 2,090,852

COMBINED TYPEWRITING AND'COMPUTING MACHINE,

Original Filed April 12, 1932 4 Sheets-Sheet 2 flffamey.

Aug. 24, 1937. N' 2,090352 COMBINED TYPEWRITING AND COMPUTING MACHINE Original Filed April 12, 1932 4 Sheets-Sheet 3 Aug.24, 1937. H. L. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINE Original Filed April 12, 1932 4 Sheets-Sheet 4 Patented Aug. 24, 1937 UNITED STATES PATENT OFFICE Henry L. Pitman, VV'cstfield, N. J., assignor, by

n e assignments, F Company, tion of Delaware to Underwood Elliott New York, N. Y., a corpora- Application April 12, 1932, Serial No. 604,691 Renewed September 14, 193 5 36 Claims.

, indexing mechanism which is used to run the coror dog that is attached to the paper-carriage.

shafts severally, of different lengths.

responding digits into one or more totalizers at the cycling of the general operator after the completed number is typed upon a work-sh et.

When passing through an adding zone, the

paper-carriage at every step causes the displacement of a pin-carrying denominational member or bar, bringing its pins into the paths. of pinsetting devices that are operable by the numeraltype-keys. The general operator thereafter drives the bars according to the settings of the pins, and these bars are caused to rotate the register-dials. The pin-bars have trains that extend upwardly in rear of the paper-carriage, and that are operated seriatim by means of a tappet A machine of this general description is seen in the patent to Hart, No. 1,190,171, of July 4, 1916.

This application discloses improvements over my pending application Serial No. 472,610, filed r August 2, 1930, and to do mainly with means whereby a single master set of denominational trains, operated seriatim as aforesaid, is ramified, so as to serve for indexing one or more of a number of index-pin-bar groups.

Heretofore, a series of denominational rockshafts extending transversely of the several groups of pin-bars were used, each rock-shaft having a master arm connected to a train extending up to the carriage. Each rock-shaft also had distributive arms, the number depending upon the number of pin-bar groups, the latter arms being connected to all the pin-bars, in the several pin-bar groups, that were of the same denomination as said rock-shaft.

As set forth in my aforesaid pending application, the organization was compacted by arranging the rock-shafts in a row, which, seen endwise of said shafts, was inclined, and by making the master and distributive arms of the rock Couplers extending from the ends of the distributive arms and shiftable for selectively engaging the pinbars by groups were also of different lengths.

The master trains extending from the master arms to the carriage were also, severally, of different proportions.

Thus there were numerous similarly functioning parts, but of such different proportions as to require a large assortment of different tools for manufacture, and entailing corresponding complexity of the manufacturing processes.

The present improvements provide a single group of carriage operated denominational drivers which are preferably in the form of racks, herein called master racks, one for each denomination, mounted for endwise displacement to an extent and in a horizontal direction corresponding to the horizontal forward displacement of the pin-bars to their pin-setting positions. These horizontal master racks, parallel to the pin-bars, may be connected at their rear ends by a row of uniform bell-cranks to rods extending upwardly to the carriage. Each rod, at its upper end, may abut a companion jack engaged by the aforesaid carriage-tappet.

For each register there is the usual group of denominational pin-bars, and for each pin-bar group there is provided, and disposed in tandem relation thereto, a group of shift racks which may be similar to the aforesaid master racks. All the racks may be made of flat blanks and disposed so that their flat sides, like the pin-bars, extend up and down, and so that all the racks are arranged along one plane, in parallel and transversely aligned array. Said plane along which all the racks are arrayed may, for com pasting the organization, be somewhat below the usual rearward extensions of the pin-bars, said extensions being the portions of the pin-bars that rest and slide in the usual guides in which the pin-bars are retained and guided for endwise reciprocatory movement. Projecting downwardly from the juncture of each extension and the main body of the pin-bar is a tongue, the forward end of which is engaged by the general operator in restoring the pin-bars after they have been advanced forwardly for registering a number. The plane in which the racks are arrayed may be so disposed that the forward ends of the pin-bar shift racks are opposite the rear edges of said pin-bar tongues, and are spaced rearwardly therefrom, to afford room for interposing couplers, whereby the several shift rack groups may be selectively connected to their corresponding pinbar groups. These couplers are preferably flat elongate blanks, each blank being pivoted at one end to the forward end of a shift rack, so that the forward end of said blank or coupler may be moved up and down. If a group of couplers is moved up, their forward ends will abut the aforesaid rear edges of the downwardly-extending pinbar tongues, and thus, forward displacement of a shift rack will effect a corresponding displacement of the pin-bar for pin-setting.

shift racks.

Extending transversely of all the master and shift racks, there is a bed or group of rockable blades for connecting the denominational master racks severally with the shift racks that are of the same denomination in the several groups of These blades are preferably flat and are so disposed that they stand upright on one set of their elongate edges, said edges being seated in suitable pivot-notches, so the blades may be rocked about said lower edges in effecting displacement of the-upper edges. Said upperedge displacement is effected by the endwise movements of the master racks which accordingly have teeth or other suitable formations for I meshing with said blades at said upper edges.

The shift racks also have such teeth or formations, to mesh with said blades at their upper edges. Thus, by means of said teeth and blades, and the mounting of the latter for rocking movement about their lower edges, endwise movements of the denominational master racks are distributed to the shift racks of corresponding denomination. Moreover, the couplers on the front ends of the shift racks make it possible in the new organization to determine which of the pinbar groups is to be called into action for the pinsetting operation when the carriage is traveling through a computing zone.

For each shift rack group, there may be provided a coupler-shifting bail, each bail having a connection to a bell-crank from which extend upwardly toward the carriage a rod and other connections, whereby the carriage, in entering and leaving a computing zone, may control the actuation of said coupler-shifting bails. These latter bell-cranks and rods may be like the aforesaid denominational bell-cranks and rods and may be disposed directly behind the latter.

Means may be provided for silencing the denominational trains in the new organization, said means being called into action during different functions of the machine, as, for example, during cycling of the general operator.

t will be seen hereinafter that the new organization is very compact, that its parts are easily made and assembled, and that denominational rock-shafts with numerous differently proportioned arms attached there are eliminated, the simple bed of blades provided by the present improvements and the simple racks and connections associated therewith replacing said rock-shafts.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a side view of the combined typewriting and computing machine, representing, in side elevation, the registers, pin-bars and the organization. of pin-bar-selecting trains and register-selecting trains controlled by the typewritercarriage.

Figure 2 is a perspective view, showing the arrangement of the group of master racks, the groups of pin-bar shift racks and the trans- 7 verse bed of blades interconnecting said racks,

and also showing how the lower ends of the denominational and register selecting trains are connected respectively to the master racks and to the coupler shifting bails.

Figure 3 is a perspective View of a frame in which the different groups of racks and the transverse blades interconnecting said racks may be retained.

Figure 4 is a side elevation, showing a pin-bar advanced to pin-setting position by operation of its shift rack as efiected by engagement of the carriage-tappet with the upper end of the train including the master rack extending from said shift rack. Figure 4 also shows how an extension of said tappet, engaging the illustrated connections, raises the coupler-shifting bail, to render the couplers effective as connections between the shift racks and the pin-bars. Figure 4 also shows-details of means whereby the denominational trains leading to the carriage from the pin-bar slides may be disabled.

Figure 5 is a perspective View, bringing out details of the denominational-train disabling means, and also bringing out details of the trains whereby the registers are selected.

Figure 6 is a side elevation, showing the operated position of the means whereby the denomination-selecting trains are disabled, said means being shown as operated by actuation of the general operator.

The depression of numeral-keys if] on keylevers ll actuates bell-cranks l2 to swing typebars l3 to cause their types Hi to print against the platen E5. The platen is on a platen-shaft l6 journaled in a case-shift frame ll forming part of a carriage l8 traveling upon rails i9 and 2D.

The carriage is pulled in a letter-feeding direction by a spring-drum and band 2| and is letter-spaced by the usual escapementmechanism 22 operated by a universal bar 23 actuated by heels 24 on the type-bars I3.

For actuating the usual pin-setting linkages of the Underwood computing mechanism, there depend from the numeral-key-levers II links 25 to depress arms 26 fixed upon horizontal rockshafts 2i forming parts of said linkages. There is one such rock-shaft for each numeral-key and each has an arm 28 connected to actuate a transverse horizontal bar 29 endwise, the movement of which is translated into edgewise down-andup movement of a lower transverse horizontal digit-bar 3!! by bell cranks 30 of which there is one at each end of each pair of bars 29, 30, see Figure 2. A corresponding bar 30 is thus depressed at each operation of a numeral-key it to depress a corresponding one of index-pins 3| projecting upwardly from pin-bars 32, mounted for reciprocatory endwise movement, there being one pin in each pin-bar 32 for each bar 3i and significant numeral-key. Each pin-bar has at its forward end a rack 33 to rotate, by the forward movement of said bar, a pinion 34 and drive a corresponding register-dial wheel 35 through a pawl 36 and a ratchet 31, the return movement of said bar being ineffective to rotate said wheel 35 by reason of the operation of said pawl and ratchet.

There is one pin-bar for each dial-wheel of a register, and, in Figure 2, there are shown three groups of pin-bars representing three registers;

It will be understood, however, that the number of registers and associate pin-bar groups is not limited to three, and that more or less registers and pin-bar groups may be provided for.

Inasmuch as the pin-setting digit-bars 30 span all of the pin-bars 32, and as the successive descents of the several bars 3!], as effected by operation of the numeral-keys I0, are to index the pin-bars 32 in denominational order, said pin-bars 32 are normally held in retracted positions by springs 38 to hold their respective pins 3| out of the paths of the pin-setting bars 30.

For indexing the pin-bars 32 in deominational order, they are, in the letter-feeding movements of the carriage, advanced seriatim to bring their several pin-bar groups begins.

pins 3| to indexing positions under the bars 30 by novel trains about to be described. Said novel trains are actuated by tappets 39 forming part of stops 40 settable on a carriage-rack 4| at the rear of the machine. Said stops 48 are further supported at their extreme ends when in a computing zone, by a plate 52 entering a slot 43 in each stop 49. A number of these stops with their tappets 39 may be provided and properly positioned on the carriage-rack 4|, in accordance with the form of the work-sheet and the computing zones thereon. The tappets 39 are in the form of cams, and, in the letterfeeding movements of the carriage, depress seriatim the several members of a set of jacks or slides 44 guided at their upper ends in slots 45 in a horizontal plate 58 fixed to the machineframe. At their lower ends the jacks 44 have stems guided in fixed plates 49, also fixed to the machine-frame. The tappets 39, stops 40, jacks 44, and associate mounting means, just briefly described, are more fully described in my aforesaid pending application.

As seen in Figures 1 and 4, the lower edges of the jacks 44 rest on the tops of upstanding rods arranged in a row, like the jacks 44, parallel to the direction of carriage-movement Said rods 50 are guided at their upper ends in a fixed plate 49, and at their lower ends the rods terminate in blocks 5! having slots 52 and crosspins 53 for connection to bell-cranks 55, which have rearwardly-extending hooked arms 54 for articulation With said slots 52 and pins 53.

As herein shown, each pin-bar group has the same number of denominational pin-bars and there are accordingly one jack 44, one rod 59 and one bell-crank 55 for each denomination. The single group of jacks 44, rods 50 and bellcranks 55 form denominational trains serving in common for the several pin-bar groups, by connections which ramify said denominational trains to pin-bars of corresponding denominations in the several pin-bar groups, as will now be described.

To this end, downwardly-extending arms 51 of the bell-cranks 55 engage bent-over portions 58 of master racks or slides 59 guided for endwise movement in slots 59, 6|, formed in plates 62, 63, respectively. These plates 52, 63 are fixed to angle-bars 64 forming front and rear sides of a frame 65, Figure 3.

During the letter-feeding movements of the carriage in the computing zone, one of the tappets 39 passes from one to another of the jacks 44, causing them to be depressed seriatim at the ends of the several letter-feeding steps in said zone. Depression of a jack 44 depresses the corresponding rod 55, which, in turn, rocks the corresponding bell-crank 55 to move the corresponding slide 59 forwardly. A single set of said master slides 59 serves in common the several groups of pin-bars, and from saidsingle set of slides 59 the ramification of the single set of denominational pin-setting trains to said To this end, each master slide 59 has a pair of downwardly-extending teeth 66 straddling the top edge of an elongate bar or blade 67 extending transversely of the slides 59 and beyond the sides thereof to reach the several groups of pin-bars 32, as will presently become more fully apparent.

There is one such blade 57 for each of the master slides 59. The several blades 61 form a bed, each blade standing upright on one of its elongate edges. The blades are tiltable on trains such edges by the endwise movements of the slides 59. For spacing and supporting the blades 61 for such tilting movement and retaining them endwise and against upward displacement, they have at their ends extensions 68 pivotally seated in V-shaped notches 69 in cross-plates 10 riveted to blocks 1 I, which are in turn screwed fast, as at I2, to the angle-bars 64. The edges of the bars or blades Bl may be rounded for properly bearing in the notches 69.

With their edges overlying the extensions 68 of the rockable blades 61, there are cross-plates 13, against the sides of Which shoulders 14, formed on the ends of said rockable blades by said extensions 98, abut. Said cross-plates I3 mortised into the angle-bars 64 thus retain said blades 61 against endwise and upward displacement. For supporting the blades 6'! against deflection, they may, at points intermediate of their ends, be seated in rungs or cross-plates l5, spaced at suitable intervals between the similar cross-plates 70. Said cross-plates 15 also have V-shaped notches 16 like the notches 69, and are riveted to blocks 11, for attachment to the angle-bars 64 by screws 18. The cross-plates 73 and 10 thus form the lateral sides of the frame 65, and the cross-plates '15 form intermediate braces for the angle-bars 64 of said frame.

As seen in Figure 2, the locations of the teeth 66 on the several master slides 59 are such that each slide 59 may actuate a corresponding rockable blade 62. The slide 59 on the extreme left engages the rearmost rockable blade 67, the slide 59 next to the one at the extreme left engaging the rockable blade that is next to the rearmost one, and so on to the slide 59 at the extreme right which engages the foremost rockable blade 61.

For each group of pin-bars 32, there is a group of shift racks or slides 79 similar to the Each of these slides also has a pair of downwardly-extending teeth 80 like the teeth of the master slides 59 for straddling the upper edges of the roclrable blades 81. The slides for the middle group of pin-bars 32 may be inter-spaced with the slides 59, as seen in Figure 2. it being desirable to dispose the master trains which include the slides 59 at the center of the machine, the central group of pin-bars 32 also being at the center of the machine. The plates 52, in which the master slides 59 are spaced and guided for endwise movement of the slots 6! have therefore an extra number of said slots to accommodate the central group of slides l9. ash of the other groups has its slides 19 spaced and guided by slots 93 formed in plates the plates {i3 and also fixed to the angle-bars '54 of the frame 95. Said plates 94, 95 have ears 95 for attaching strips 91 by screws which, seen in Figure 2, retain all the slides '59 against upward displacement. The rockablc blades 6? may have their rocking movelimited by cross-bars l seated in extra 93 of the plates 54, 35 and retained by cross-bars have downwardlylugs t ll which lim the rocking moveof said blades 8?. It will be seen now that, by means of the rockable blades 57, the slides 59, i9, and the teeth 55, on srid the master are ramified latt ent pin-bar groups for in denominational. order a ly to serve the differadvancing the pin-bars or selection for pin-set- It will he understood that because the carriage in its letter-feeding steps moves from right to bar groups.

left, the highest denomination in the group of master slides 59 is at the right of said group. The highest denomination in the pin-bar group, however, is at the left of the pin-bar group. The slides 59, 19, and the rockable blades 61 extending transversely thereof, constitute simple means for transposing the right-to-left order of denominational selection of the master slides 59 into. a left-to-right order of denominational selection for the pin-bar slides 19. Thus, it will be noted in Figure 2 that the master slide 59 at the extreme right of its group is connected by the rearmost rockable blade 51 to the pin-bar slide '65 at the extreme left of each of the several pin- Similarly, the master slide 59 that is next to the one at the extreme right of its group is connected to the pin-bar slides 19, of the several groups of said slides 19, which are next to the extreme left members of said latter groups. In this order, the transposition continues until finally the master slide 59 at the extreme left of its group is connected to the pinbar slides 19 at the extreme right of their groups. Endwise movement of the slides 59 is thus transmitted to the several groups of pin-bar slides in proper denominational order.

The pin-bar slides 19, which, by their endwise forward movement, are to advance the pin-bars to pin-setting positions, do not directly engage the ends of said pin-bars, but do so by means of couplers 3!, which, normally withdrawn, may be interposed between the pin-setting slides 12 and the pin-bars for selectively calling into action different pin-bar groups and their corresponding totalizers. To this end, the couplers BI are pivoted to the pin-bar slides 19 as at 82, so that their forward ends may be shifted up 01' down. As seen in Figure l, the forward ends of the couplers M are normally down, so that forward movement of the pin-bar-setting slides 19 will have no effect on the pin-bars 32 unless it is so desired, in which case the couplers swingable on their pivots have their forward ends moved up wardly to the positions seen in Figure 6, it being understood that the parts are so arranged that the forward or pin-bar-engaging ends of the couplers are opposite downward extensions 83 of said pin-bars, as seen in Figures 1 and 6. Each group of couplers 8I for the corresponding group of pin-bars 32 is to be moved up or down as a whole and each group of couplers is therefore provided with means whereby the couplers may be shifted as a group. Said means include a pair of bell-cranks 85, one at each side of the group, between which are fastened a bar 86 for pushing the couplers upwardly, and, therefore, underlying said couplers, and a rod 89 for assuring the downward drop of the couplers when the underlying bar 86 is moved down. The bar 86 and rod 89 may be separated enough to prevent binding the couplers when the latter are down. For pivotally supporting the couplershifting bail thus formed by the bell-cranks 85 and bars 85, 89, the blocks 'II, 11, at the front of the frame I55, may have secured to their tops, as by screws 88, forwardly-extending blocks 85, from the sides of which there extend suitable pivots 95, on which the bell-cranks 85 may swing, the inner pivots 90 being provided with shoulders BI for abutting the sides of the bell-cranks 85 to retain the coupler-shifting bails laterally, the outer bell-cranks of the outer bails abutting the blocks 84.

Shifting of the couplers 8I is under the control of the carriage, to the end that when a computing zone of a work-sheet passes the printingpoint, there may be determined automatically which of the totalizers are to be called into action. As set forth in my aforesaid pending application,'the settable stops "55 on the carriage may each have one or more tappet-cams I02, which, as the carriage enters a computing zone, override slides I03 mounted for vertical movement in the framework of the machine. Said slides I03, which are normally up, are thus delocation of said tappet-cams I52, a predeter-- mined selection of the registers to be called into action by said stop All, as the carriage enters a computing zone, may be made. Downward movement of a slide Ill? depresses a corresponding rod I04, whose upper end abuts a lower edge of said slide. I03, and whose lower end has a block I05 for connection to a rearwardly-extending arm H16 of a bell-crank I01. Said block Hi5 has a slot I08, so that the block may embrace the bellcrank arm I05, a pin I09 extending transversely through said slot and being seated in a notch ill] of said bell-crank arm I06. The upper ends of the rods. [B4 are guided in the plate 42, Figure 1, fixed to the framework.

The bell-crank I51 translates the vertical movement of the rod Hit into horizontal movement of alink III, which extends the train to the corresponding coupler-shifting bail, said bellcrank I01 having a downwardly-extending arm I I2, and the coupler-shifting bail having a downwardly-extending arm H3, said arms II2, H3 being connected by said link III. As seen in Figures 2 and 5, the coupler-shifting bell-cranks I01 and the trains extending upwardly therefrom to the carriage are preferably located centrally of the machine, and behind the already described denomination-selecting trains. The front and rear ends of each link I H are therefore oflset from one another by bends HQ, as shown in Figure2, so that said link I I i may reach from the centrally disposed bell-crank I81 to its corresponding coupler-shifting bail-arm H3. The front end of each link I I I is pivotally hooked into the arm H3, the rear end of the link having an abutting contact with the suitably formed end of the bell-crank arm H2.

The forward end of each link II E is upheld by the arm H3, and the rearward end is upheld by passing through a hole in a plate H5, which, as best seen in Figure 5, may be secured to the rear face of bosses II6 extending rearwardly from a rear'cross-member II1 of the computing-mechanism framework, said plate being secured by screws I20. Fastened to the rear side of said plate II5 by screws I2I, there are upstanding posts I22 spaced apart, as seen in Figure 5, to support a cross-rod I23, on which the totalizer selecting bell-cranks I51 may rock. Said bellcranks are spaced laterally from one another by collars I24, and from the sides of said posts I22 by collars I25, the latter having screws I 26 to bind upon the cross-rod I23 and retain it endw1se.

Each coupler-shifting bail has another arm H3 besides the one to which the link III is at- 0 I32 reciprocates once.

tached, said latter arm serving for attachment of one end of a spring I21, the other end of the spring being attached to the rear angle-bar 64 of the slide-frame 65. There is one of said springs I21 for each coupler-shifting bail, and pulling upon the bail and the train connected thereto, it serves to keep the forward ends of the couplers 8I normally down, or to cause such for- Ward ends to be depressed as soon as the tappet-- cam I 02 on the carriage leaves the slide I 03 as said carriage leaves a computing zone, it being understood that the top edges said slides H33 are co-extensive in the direction of carriagetravel with the width of the computing Zone. The arm III has a stop-edge I lfs which may abut the front angle-bar 64 to limit the displacement of the coupler-shifting bail by the spring I21.

Attached to the rear end of the pin-bar slides 19 of one of the pin-bar-slidc groups, preferably the central group, as herein shown, are springs I28, said springs being anchored to a crossbar I29, having side arms I38, bent upwardly and rearwardly for resting upon the tops of the posts I22, to be secured by screws I3I. By means of the interconnections effected by the rockable lade 61 between the several groups of slides 59, 19, all of said slides are normally kept in a reracted position by the pull of the springs I 528, each spring I28 also serving to retract its slides 59, 19 as the carriagetappet 30 passes from the jack 44, which was previously depressed to advance said slides. Rearward displacement of the slides by the springs I28 is limited by the abutment of the rockable blades 61 with the lugs I0! of the cross-bar I00.

When the pins 3| in the several groups of pinbars called into action have been caused to be depressed or set by operation of the numeralkeys l0, and concomitant actuation of the slides 50, 19, as controlled by the movements of the carriage, effected by operation of said keys II], the computing mechanism is cycled. In a cycling operation, the usual general-operator cross-bar In the forward movement of said general-operator cross-bar I32, the forward edge of the same encounters the depressed index-pins 3I (Figure 4), and advances the respective pin-bars 32, the extent of pin ba-r advance depending on which of the pins 3| in said bar was depressed. Numbers corresponding to the digits in the bars 32 are thus run into the totaliz-er-wheels 35 by the forward movement of the general-operator cross-bar 532. In the return movement of said general-operator crossbar, the rearward edge thereof encounters the downwardly-extending projections 83 of the several pin-bars 32 that have been advanced, and restores the latter to their normally retracted positions, seen in Figure 1.

In order that the pin-bars 32 may be slightly advanced individually to pin-setting positions, the generaloperator cross-bar does not of itself'fully restore said pin-bars, the restoration being completed by the springs 38, which, snapping over the corners I33 of the advanced pinbars as they near the end of their return move-' ment, complete the return of said pin-bars. Thus there is left between the rear edge of the general-operator cross-bar and the front of the downwardly-extending projections 83 of the pinbars a gap I34 (Figure l), which affords room for the slight forward pin-setting advance of the pin-bars.

To disable the slides 59, 19, during a computing cycle, so that, as, for example, when the generaloperator cross-bar is all the way forward, no pin 3I may be set behind the rearward edge of the advanced general-operator cross-bar, the mechanism about to be described is provided. For non-skewing advance and return, the generaloperator cross-bar I32 is mounted upon arms ISG extending from the usual racks L31, one at each end of the cross-bar, and having the usual crossconnections, not shown, so that said racks move in unison and thereby effect the movement of the general-operator cross-bar without skewing. One of said racks I31, preferably the one at the left, has a notch 338, in which there normally a roll I39 on the end of an arm Mil of a lever IGI, pivotally mounted on a stud M2 extending inwardly from a side I 33 of the computingmccbanism framework. In the cycling operation the racks I31 reciprocate, and, with the parts arranged as shown in Figures 1 and 5, the roll-end of the arm I IE will be displaced to the position seen in Figure 6 as soon as the racks 531 start forwardly, and will only re-enter the notch I38 as said racks reach the end of their return movement. Thus, at the very beginning of the cycle, the lever MI is rotated clockwise, as seen in Figure 6, and is rotated counterclockwise at the very end of the cycling operation. The duration of the displacement of the lever I4! is thus almost coextensive with the cycling operation, and said displacement may be used for disabling the slides 59 and 15*.

To this end, the bell-cranks 55, which actuate the master slides 59, are mounted upon a shiftable rod H35, and are spaced and located thereon by collars I44. For shifting said rod M5 forwardly and rearwardly, it is mounted between arms I 16 extending upwardly from a rock-shaft I41, which may be actuated by the lever MI, which, accordingly, has an upward1y-extending arm I48 connected by a link Me to an arm extending upwardly from and fastened to the rock shaft I01. For actuating said rock-shaft I41 independently of the lever MI, the forward end of the link I49 has a pin-and-slot connection I5I to the arm MS of said lever. A spring I 52 urges the arm I59 forwardly, the forward movement being limited by the abutment afforded by the pin-and-slot connection ihl. The lever MI may have an independent spring 25 pulling upon an arm I55 of said lever, and anchored to the side member I43 of the framework at I55 (Figure 1).

With the bell-crank fulcrum-rod I45 in its normal forward position, as in Figures 1 and l, the bell-cranks 55, abutting the rear ends of the master slides 59, are so positioned as to cause the tops of the jacks 44 to be elevated into the path of the tappet 39, which thus becomes effective to advance the pin-bars for pin-setting. When, however, the bell-crank fulcrum-rod M5 is displaced rearwardly, as during a computing cycle, in the manner just described, the bell.cranks still reacting against the rear ends of the master slides, will be so positioned that the top of the jacks 44 are lowered away from the path of the tappet 39, see Figure 6, so that the slides 59, 19 are disabled for pin-setting operations. This disabling of the slides 59, 19 is also effected by calling into action other functions of the machine, as, for example, a tabulating operation or case-shifting of the platen-frame. To this end, the rock-shaft I41 may have an upwardly-extending arm I51, to which suitable connections may be made for effecting operation of said rock-shaft independently of the cycling operation. The rock shaft M'J is journaled in posts 58 extending upwardly from the cross-member ill of the framework,

The numeral-keys it and their key-levers H are to be locked during the operation of the computing cycle and also while the carriage is in a punctuatiomspace in the computing zone by means generally similar to those described in the patent to I-Iart, No. 1,281,953, dated October 15, 1918. Each of the pendants 25 has, besides the branch that engages the arm 26, Figure 1, an additional branch lbs for passing between a series of cam-blocks E pivoted upon the front plate I6! of the frame that supports the pinsetting linkage, as set forth in said Hart Patent No. 1,281,953, said cam-blocks I66 being spaced edge to edge, and being blocked by one another and also by abutments for the end cam-blocks, so that there is just enough room for the passage of only one pendant-branch I59 therebetween. To prevent the passage of any branch i553 between the cam-blocks I69, thereby to lock the numeral-key-levers l! against operation, the normal opening which any two adjacent camblocks 60 will afford by spreading of said adjacent blocks may be caused to be unavailable by interposing, at a suitable place in the series of blocks, an arm I52, Figure 1. When said arm 562 is thus interposed, it just takes up all of the room normally afforded between any two adjacent cam-blocks Hit! and it is therefore impossible to operate a numeralkey-lever II.

The arm- I62 is fast to a rock-shaft IE3 to which is also fastened an upwardly-extending arm Efi l connected by a link I to a lever 5%, Figures 1 and 2. The forward end of said link I65 is pivotally connected to the arm hid, the rear end of said link having a yielding pin-andslot connection I6? to the upwardly-extending arm I68 of the lever I66, so that if the latter is operated while a numeral-key is down, the mechanism will not jam because of inability of the arm to enter between the cam-blocks I68.

Said lever I 6% is pivoted to the inner side of one of the posts 558 that extends upwardly from the frame-work cross-member Ill and has a downwardly-extending arm 559 for connection with a rock-shaft Hi1 extending transversely and in front of the row of denominational rods 58 of the master denomination-selecting trains. Said rods fill are spaced according to the punctuation-interval appearing on the work-sheet, that is, there is a punctuatiomspace between the dollars and cents columns, between the hundreds and thousands columns, and so on if higher denominations are employed.

When the carriage is at such a punctuationspace the numeral-key-levers II are to be locked, and there are interspersed with the denominational rods 58, therefore, other rods It? having corresponding jacks id abutting their upper ends, one of the latter jacks being depressed with an accompanying depression of its rod I I2 when the carriage is at a punctuation-space. The lower end of each .rod H2 is connected to a slotted arm I73 extending rearwardly from and fastened to the rock-shaft lit, the connection being made in a manner similar to that employed for connecting the rods 59 and IM as will be evident from Figure 2. When the carriage is at a punctuation-space the rock-shaft we will thus have been rocked. For actuating the lever I555 to lock the numeral-key-levers II, the rock-shaft il il has fastened thereto a downwardly-extending arm I15 whose lower end adjoins the lower end of the arm 569 of lever I66 and is connected thereto by a pin-andslot connection H5, Fi ures 1 and 2.

The numeralkey-levers II are also to be locked during a computing cycle. The rock-shaft Ml, which, as described, is caused to have been rocked during said cylce, has fastened thereto and extending rearwardly therefrom an arm Ill, Fig ure 2. The key-locking rock-shaft we also has fastened thereto a rearwardly-extending arm N8, the arms I'll, I 18 being connected by a link I19, one end of said link having a pin-and-slot connection Hill to the arm connected thereto, so that the rock-shaft lit) may be actuated independently of the rock-shaft Ml. A light spring ISI pulls upon an arm I82 formed integral with the arm I78, but extending to the opposite side of g the shaft lit, said spring 58E holding the rockshaft HE! and the parts connected thereto in normal position.

The frame 65 in which the racks 59, I9 are retained may rest upon bosses I83 projecting upwardly from the top of the cross-member Il'I of the framework and may be secured to said bosses by screws EN. The posts I58 may be separate members secured to said cross-member II'I, as shown in Figure 1, said posts having stems I85 passing through said cross-member Ill and secured by nuts I86.

The pin-bars 32 have rearward extensions I81 retained and guided for endwise reciprocatory movement of said bars 32 in slotted plates I fastened to the front framework cross-member IIY, Figure l. ings I88 to clear the front ends of the groups of couplers iii. The pin-bars 32 are guided and spaced at their forward ends by slotted guides (not shown). The projections 33 of the pin-bars 32 and the couplers BI may have their opposite corners beveled as at I89, Figure 4. By means of the bevel 89 a pin-bar 32 will be cammed forwardly by the raising of the couplers if the pin-bar slide I9 has been advanced first toward pin-setting position.

It will be seen that the slides 5! l9 and the transverse rockable blades 5'5 that connect the different groups of slides may be arranged very compactly and that said slides and blades are simple blanks easily manufacturable without requiring an unduly large assortment of punches and dies. The denominational bell-cranks 55 and the group selecting bell-cranks I61 are also simple blanks and are all alike in form and proportions. organization is easily assembled and that its different parts are easily accessible.

Variations may be resorted to within the scope of the invention, and portions of the imp-rovements may be used without others.

Having thus described my invention, I claim:

1. In a computing machine having a plurality of registers, the combination of a plurality of sets of index-pin bars, one set for each register, and mechanism for moving the pin-bars into positions to have their pins set, said mechanism including a series of elongate bars mounted so that each bar stands upright on one of its elongate edges and is rockable about said edge, said bars extending transversely of the pin-bars, means for rocking said bars, and a plurality of groups of slides, said slides being elongated to extend transversely of said rockable bars, there being one group of slides for every series of pinbars, and operatively connected thereto, said Said plates I90 may have open- It will be further noted that the new Dr- A4) rockable bars having connection to the slides of the several groups that are of the same denomination.

2. In a combined typewriting and computing machine having a carriage, the combination with a plurality of groups of indexable denominational members individually shiftable to indexing positions, of a group of carriage-operated denominational master racks, a plurality of groups of shift racks corresponding to and operatively conn-ccted to said groups of denominational members, the master racks and the shift racks being arranged in parallel array that extends cross- Wise of the machine, and a. bed of rockable distributive cross blades having a set of straight edges whereby they are individually geared to the master racks, said blades ramifying from and geared to the shift racks of the same denomination.

3. In a typewriting and computing machine having a carriage and also having sets of horizontal indexable denominational members; mechanism for individually shifting said members to indexing positions, said mechanism including a single row of carriage-operated denominational levers, a set of master racks individually shiftable by said levers, a bed of rockable blades individually geared to the master racks and ramifying crosswise therefrom, and a plurality of sets of horizontal shift racks individually geared to said blades and connected to shift said denominational members.

4. In a typewriting and computing machine having a carriage and also having sets of horizontal indexable denominational members; mechanism for individually shifting said members to indexing positions, said mechanism including a single row of carriage-operated denominational levers, a set of master racks individually shiftable by said levers, a bed of rockable blades individually geared to the master racks and ramifying crosswise therefrom, a plurality of sets of horizontal shift racks individually geared to said blades, and sets of carriage-controlled movable couplers on said shift racks whereby said sets of shift racks are selectively connected to shift said denominational members.

5. The combination of a letter-feeding carriage, a bed of rockable transverse blades resting in notches at their ends and between their ends, a set of notched master racks, a set of notched shift racks interspaced with the master racks, other sets of shift racks, said blades having top edges meshing with all said racks, carriage-oper- 55 ated means for driving the master racks, and

index-devices shiftable by the shift racks, the notches in each set of racks having an echelon arrangement to mesh with successive blades.

6. The combination of a letter-feeding carriage, a bed of rockable transverse blades, a set of notched master racks, a plurality of sets of notched shift racks, the top edge of each blade meshing with one rack in each of said sets, carriage-operated means for selecting and driving the set of master racks seriatim, the seriatim selection being in the same direction as the carriage movement, and indexing devices shiftable by the shift racks, the notches in each set of racks having an echelon arrangement to mesh with successive blades, the echelon arrangement for each set of shift racks being inverse to the echelon arrangement for the set of master racks whereby the shift racks are operated in reverse order from the carriage-operated master racks.

7. In a machine of the class described having a carriage and a plurality of sets of denominational members individually shiftable by said carriage to indexing positions; a distributive unit whereby the carriage control is ramified from a single zone of operations to the several sets of denominational members, said unit including a bed of blades on edge and extending crosswise of said sets of denominational members, a frame having front and rear bars connected by notched rungs in which the blades are set to rock individually, said rungs supporting the blades at their ends and at intermediate points, a set of carriage-operated denominational master racks slidably retained at their ends in notches in said frame-bars and individually geared to the upper edges of said blades, and a plurality of sets of shift racks also individually geared to said upper blade-edges and slidably retained at their ends in notches in said frame-bars, said shift racks being operative to shift said denominational members.

8. In a computing machine having numeralkeys and a carriage, the combination with a plurality of sets of denominational members indexable by said keys and individually shiftable to indexing positions, of a corresponding plurality of parallel sets of racks for individually shifting said indexable members, a set of blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and a single set of carriage-operated denominational drivers connected to rock said blades individually, said blades ramifying from said drivers to said sets of shift racks.

9. In a computing machine having numeralkeys and a carriage, the combination with a plurality of sets of denominational members indexable by said keys and individually shiftable to indexing positions, of a corresponding plurality of parallel sets of racks for individually shifting said indexable members, a set of blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and a single set of carriage-operated denominational drivers connected to rock said blades individually, said blades ramifying from said drivers to said sets of shift racks, said racks being geared to said blades in reverse order from said denominational drivers.

10. In a computing machine having numeralkeys and a carriage, the combination with a plu-- rality of sets of denominational members indexable by said keys and individually shiftable to indexing positions, of a corresponding plurality of sets of racks for individually shifting said indexable members and disposed in tandem relation thereto, a set of rack-operating blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and a set of carriage-operated denominational drive racks geared to said blades to rock the latter individually.

11. In a computing machine having numeralkeys and a carriage, the combination with a plurality of sets of denominational members indexable by said keys and individually shiftable to indexing positions, of a corresponding plurality of sets of racks for individually shifting said indexable members and disposed in tandem relation thereto, a set of rack-operating blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and a set of carriage-operated denominational drive racks geared to said blades to rock the latter individually, said sets of shift racks being geared to said blades so that the sets of shift racks are operated in reverse order from the set of drive racks.

12. In a computing machine having numeralkeys and a carriage, the combination with a plurality of sets of denominational members indexable by said keys and individually shiftable toindexing positions, of corresponding plurality of sets of racks for individually shifting said indexable members and disposed in tandem relation thereto, a set of rack-opcrating blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and a set of carriage-operated denominational drive racks geared to said blades to rock the latter individually, said sets of shift racks being geared to said blades so that the sets of shift racks are operated in reverse order from the set of drive racks, the set of drive racks being intersp-aced with one of the sets of shifting racks.

13. In a computing machine having numeralkeys and a carriage, the combination with a plurality of sets of denominational members. indexable by said keys and individually shiftable to indexing positions, of a corresponding plurality of sets of racks for individually shifting said indexable members and disposed in tandem relation thereto, a set of rack-operating blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and a set of carriage operated denominational drive racks geared to said blades to rock the latter individually, the distributive cross blades being mounted in juxtaposition to the sets of shifting racks and the set of carriage-operated drive racks, and being geared on one set of their edges both to the shifting racks and also to the carriageoperated drive racks.

14. In a machine of the class described having a denominatiomselecting carriage, the combination of a set of carriage-operated denominational drive 5 mounted side by side for individual movements, a set of parallel blades individually engaged with said drivers to be rocked thereby, a set of denominational racks geared individually to said rockableblades to be driven thereby, said blades extending crosswise of said drivers and said racks, and key-controlled indexing mechanism having denominational members connected to be displaced individually by said racks.

15. In a machine of the class described having a denominational-selecting carriage, the combination of a. set of carriage-operated denominational drivers mounted side by side for individual movements, a set of parallel blades individually engaged with said drivers to be rocked thereby, a set of denominational racks geared individually to said rockable blades to be driven thereby, said blades extending crosswise of said drivers and said racks, and key-controlled indexing mechanism having denominational members connected to be displaced individually by said racks, each rack meshing with one edge of its blade, the opposite edge of the blade rocking in fulcrums at separate points.

16. In a computing machine having numeralkeys and a. carriage, the combination with a plurality of sets of denominational members indexable by said keys and individually shiftableto indexing positions, of a corresponding plurality of parallel sets of racks for individually shifting said indexable members, a set of blades extending crosswise of said racks, said blades being rockable and individually geared to the racks, and

a single set of carriage-operated denominational drivers connected to rock said blades individually, said blades ramifying from said drivers to said sets of shift racks, said blades being horizontal and disposed on edge, the set of lower edges of the blades: rocking in iulcrums at separate points and the sets of shifting racks being disposed above the blades to mesh with the set of upper edges of the latter.

1'7. In a computing machine having a carriage and a plurality of sets of indexable denominational members shiftable to indexing positions, the combination of a plurality of sets of racks for individually shifting said members, a set of rackoperating denominational blades ramifying crosswise of said racks, fulcrums against which each of said blades is set edgewise to be supported. for individual rocking movements, said blades being individually geared to said racks, and a single set of carriage-operated drivers connected to rock said blades individually for operating said sets of racks.

18. In a computing machinehaving a carriage and a plurality of sets of indexable denominational members shiftable to indexing positions, the combination of a plurality of sets of racks for individually shifting said members, a set of rackoperating denominational blades ramifying crosswise of said racks, a series of fulcruins against which said blades are set edgewise to be supported for individual rocking movements, said blades being individually geared to said racks, and a single set of carriage-operated drivers connected to rock said blades individually for operating said sets of racks, said fulcrums being disposed to support the blades at their ends and also at intermediate points.

19. In a machine of the class described having a carriage, the combination of a single set of carriage-operated denominational drive racks mounted side by side for individual movements, a set of distributive blades individually meshing with said drive racks to be rocked thereby, a plurality of sets of denominational shift racks geared individually to said blades to be driven thereby, said single set of carriage-operated drive racks being disposed between adjacent sets of shift racks, the latter connected in reverse denominational order from the carriage-operated racks, supports in which said blades rock, said supports being disposed at the ends of the blades and at points between said ends, and key-controlled indexing mechanism having a plurality of sets of denominational members connected to be shifted individually by said sets of shift racks.

20. In a machine of the class described having a carriage, the combination of a single set of carriage-operated drive racks mounted side by side for individual movements, a set of distributive cross blades individually meshing with said drive racks to be rocked thereby, a set of denominational shift racks geared individually to said blades to be driven thereby, the carriage-operated racks being interspaced with the shift racks, a second set of denominational shift racks at the side of the first set of shift racks and geared to the same blades, and key-controlled indexing mechanism having sets of denominational members connected to be displaced individually by the sets of shift racks.

21. In a machine of the class described having a carriage, the combination of a single set of carriage-operated drive racks mounted side by side for individual movements, a set of distributive cross blades individually meshing with said drive racks to be rocked thereby, a set of denominational shift racks geared individually to said blades to be driven thereby, the carriageoperated racks being interspaced with the shift racks, a plurality of additional sets of denominational shift racks including a set at each side of the first set of shift racks and geared to the same blades, and key-controlled indexing mechanism having sets of denominational members connected to be displaced individually by the sets of shift racks,

22. In a machine of the class described having a carriage, the combination of a s' le set cl carriage-operated denominational l. 15 mounted side by side for individual movements, I a set of dis ributive blades individually meshing With said drive racks to be rocked thereby, a plurality of sets of denominational shift racks geared individually to said blades to be driven thereby, the drive racks being connected i reverse denominational order from the ca operated racks, supports in which said blades rock, and key-controlled indexing mechanism having a plurality of sets of denominational members connected to be shifted individually by said sets of shift racks; the drive racks being interspaced with the shift racks in one set.

23. In a computing machine having a carriage and numeral-keys, the combination with a phi-- rality of sets of denominational mem ers index-- able by said keys and shiftable to indexing positions, said sets spaced across said machine, of a corresponding plurality of sets of racks operatively aligned with said members for shifting the latter individually, at set of rack-operating rockable denominational blades extending crosswise of the sets of racks and gea ed individually thereto, and a sin le set of cairiage operated drivers connected to rock said blades individually, said cross blades and sets of shift racks forming a distributive system for control of the shift of the spaced sets of indexable denominational members by the single set of carriage-operated denominational drivers.

24. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a group of denominational selectors side by side and having one denominational se- 50 quence and advanceable individually by said carriage, a register having a group of index-pin trains arranged alternately with respect to said selectors and advanceable transposed denominational sequence for indexing operations, and a 55 set of rockable cross-blades, one for each denomination, to which the selectors are articulated,

and to Which the index-pin trains, in order to be advanceable by the carriage, are also articulated, said blades crossing said selectors and in- 60 dex-pin trains.

25. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a group of denominational selectors side by side and having one sequence of denomina tions, and advanceable individually by said carriage, a plurality of registers and groups of index-- pin trains therefor, each group arranged in transposed denominational sequence, and a set of rock- 70 able cross-blades, one for each denomination, connecting the selectors individually with the index" pin trains of the same denomination in said groups, said blades being articulated to said se- 75 lectors and also to said index-pin trains, said blades crossing said selectors and groups of index pin trains.

26. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a group of denominational selectors side by side and having one sequence of denominations, and advanceable individually by said carriage, a plurality of registers and groups of indexpin trains therefor, each group arranged in transposed denominational sequence, and a set of rockable cross-blades, one for each denomination, connecting the selectors individually with the EX-p111 trains of the same denomination in groups, said blades being articulated to said selectors and also to said index-pin trains, said cross-blades having opposite edges and being articulated at one set of their edges with said trains, and being fulcrumed at the opposite set of their edges upon stationary mounts.

27. In a combined typewriting and computing machine, the combination of a carriage, numeral-keys controlling step-by-step movements of said carriage, a master group of denominational selectors side by side and having one sequence of denominations, and advanceable individually by said carriage, a plurality of registers and groups of index-pin trains therefor, each group arranged in transposed denominational sequence, a set of rockable cross-blades, one for each denomination, gearing the master selectors individually with the index-pin trains of the same denomination in said groups, said master selectors being arranged alternately with the indexpin trains in one of said groups, and said blades having one set of their edges articulated to the master selectors and also to the index-pin trains, and being fulcrumed at their opposite edges upon stationary mounts, and settable means to enable the carriage selectively to control the operation of the groups of index-pin trains for effecting register-selection, said index-pin trains each including a selector, an index-pin bar, and a coupler, and said carriage having means for automatically controlling said couplers.

28. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a plurality of registers and groups of index-pin trains therefor, a set of rocker-blades common to said groups and extending crosswise of the index-pin trains, one rocker-blade for each denomination, said rocker-blades having opposite edges, and being articulated by one set of their edges to the index-pin trains in all the groups, and being fulcrumed by the opposite set of their edges upon mounts, and means controlled by the carriage for selectively operating the rockerblades, one by one, in denominational sequence.

29. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a plurality of registers and groups of index-pin trains therefor, each group including a set of denominational selectors, and a set of index-pin bars, a set of rocker-blades common to said groups and extending crosswise of the denominational selectors, one rocker-blade for each denomination, said rocker-blades having opposite edges, and being articulated by one set of their edges to the denominational selectors in all the groups, and being fulcrumed by the opposite set of their edges upon mounts, means controlled by the carriage for selectively operating the rocker-blades, one by one, in denominational sequence, -each train also including a disabling member between the index-pin bar and the selector, and settable means controlled by said carriage for controlling the condition of said disabling members, to move said couplers to effective positions, to bring any selected set or sets of in; flex-pin trains into eifective conditionior ani computing zone reached by said carriage. I

30. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controllingstep-by-step movements of said carriage, a, plurality of registers and groups of index-pin trains therefor, a set of rocker-blades common to said groups and extending crosswise of the index-pin trains, one rocker-blade for each denomination, said rocker-blades having opposite edges, and being articulated by one set of their edges to the index-pin trains in all the groups, and being fulcrumed by the opposite set of their edges upon mounts, and means controlled by the carriage for selectively operating the rocker-blades, one by one, in denominational sequence, said means including carriagecontrolled racks extending lengthwise of the index-pin trains and adjacent thereto and articulated to said rocker-blades in transposed denominational sequence relative to said index-pin trains.

31. The combination of a single set of digitkeys, aset of denominational register-bars advanceable one at a time to position to receive digit-indexing operations at the operations of said keys, a nest of facewise rockable crossblades, one for each denomination, extending transversely of said register-bars, and means for efiecting rocking of said cross-blades in denominational sequence through successive operations of said keys, said cross-blades presenting a set of edges having operative connections to the register-bars, whereby said rocking of said blades advances the register-bars to indexing position.

32. In a multiple-register computing machine, the combination of a single set of digit-keys, a plurality of sets ofdenominational register-bars, said register-bar sets being side by side, the register-bars of a set being advanceable, one at a time,-toposition to receive digit-indexing operations at the operations of said-keys, a nest of facewise rockable cross-blades, one for each denomination, extending transversely of all the register-bar sets, means for effecting rocking of said cross-blades in denominationalsequence through successive operations of said keys, said crossblades presenting a set of edges moving concomitantly with the rocking of said blades, and means for operatively connecting said registerbar setsselectively to said cross-blade edges, whereby said rocking of said blades advances the register-bars of the selected sets to indexing position.

33; In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a group of carriage-controlled denominational selectors side by side, a plurality of registers and groups of normally inefiective index-pin trains, one group for each register, a set-of-rockers in the form of cross-blades gearing the selectors individually but in reverse denominational order to the index-pin trains, said blades crossing said selectors and index-pin trains, and means for selectively rendering eiiective any group or groups of index-pin trains.

34. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys cont-rolling step-by-step movements of said carriage, a master group of denominational selectors side by side and having one sequence of denominations, and advanceable individually by said carriage, a plurality of registers and groups of normally collapsed index-pin trains therefor,

each group arranged in transposed denominational sequence, a set of rockable cross-blades, .one for each denomination, gearing the selectors individually with the collapsible index-pin trains of the same denomination in said groups, said blades being geared to said selectors and also geared to said index-pin trains, said blades crossing said selectors and groups of trains, and means for selectively restoring any group or groups of indexpin trains to efiective condition.

35. In a combined typewriting and computing machine, the combination of a carriage, numeralkeys controlling step-by-step movements of said carriage, a master group of denominational selectors side by side and having one sequence of denominations, and advanceable individually by said carriage, a plurality of registers andgroups of normally collapsed index-pin trains therefor, each group arranged in transposed denominational sequence, a set of rockable cross-blades, one for each denomination, gearing the selectors individually with the collapsible index-pin trains of the same denomination in said groups, said blades being geared to said selectors and also geared to said index-pin trains, said blades crossing said selectors and groups of trains, and means for selectively restoring any group or groups of index-pin trains to eiiective condition, each of said index-pin trains including a selector geared to a cross-blade, and also including amindex-pin bar extending from said selector, and alsoincluding a normally idle coupler for coupling said selector to said pin-bar, said carriage. having means dependent upon its movement in. a computing zone for automatically causing the couplers to connect the selectors to the index-pin bars.

36. In a typewriting and computing machine, the combination with numeral-types and a letterfeeding carriage, of a dominant set of denominational selecting trains operable by said carriage repeatedly in reverse denominational sequence during a single line of typing, a row of cross-blades mounted upon bearings,ua-nd formed to engage teeth upon said dominant selecting trains tobe rocked seriatim thereby, groups of subordinate denominational selectors in toothed engagement with said cross-blades whereby to be controlled by said dominant selecting trains but in normal denominational sequence, groups of indexing bars co-operable with said subordinate groups of denominational selectors, and means controllable by said carriage for selecting the group or groups of subordinate selectors'for operation of their associated group or groups of index-pin bars.

HENRY L. PITMAN.

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