US885202A - Adding and listing machine. - Google Patents

Description

No. 885,202. PATENTBD APR. 21, 1908. W. B. SWALM.

ADDING AND LISTING MACHINE.

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N0. 885,202. PATENTED APR. 21, 1908. W. B. SWALM.

ADDING AND LISTING MACHINE.

APPLICATION FILED OOT.24, 1907.

B BHEBTSSHEET 2.

No. 885,202. PATENTED APR. 21, 1908. W. B. SWALM.

ADDING AND LISTING MACHINE.

APPLICATION FILED 00T.24,190'T.

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{ 1 1 'FFH we -1" EWQ H I 900 (7% 155- No. 885,202. PATENTED APR. 21, 1908.

Y W. E. SWALM.

ADDING AND LISTING MACH NE.

APPLICATION FILED 001224 19 07 a SHEETS-SHEET 4.

No. 885,202. PATENTBD APR. 21, 1908. W. E. SWALM.

ADDING AND LISTING MACHINE.

APPLIGATION FILED 00T.24 1907.

' a BHBETB-SHBET 5.

No. 885,202. PATENTED APR. 21, 1908. W. B. SWALM. ADDING AND LISTING MACHINE.

APPLIUA'I'IOH FILED DOT. 24, 1907.

8 SHEETS-SHEET 6.

No. 885,202. PATBNTED APR. 21, 1908.

- W. B. SWALM.

ADDING AND LISTING MACHINE.

APPLIGATIOH FILED 00T.24, 1907.

No. 885,202. PATENTED APR. 21, 1908. W. B. SWALM. ADDING AND LISTING MACHINE.

APPLICATION nun 00124 1907.

a sums-sum a.

UNITED STA'IIES PA TENT OFFICE.

WILLIAM E. SWALM, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO BURROUGHS ADDING MACHINE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

ADDING AND LISTING MACHINE.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed October 24, 1907. Serial No. 899,024.

To all whom it may concern:

Be it known that I, WILLIAM E. SWALM, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Adding and Listing Machines, of which the following is a description, reference being had to the accompanying drawings, forming a part of this spec1fication.

M invention relates to what are commonly known as adding machines, and more especially to that type thereof which are capable of not only adding or accumulating,

ut also of printing or isting, a series of items or amounts, and of printing a total thereof, such as the well-known Burroughs adding and listing machine, constructed under and in substantial accordance with Letters Patent of the United States Nos. 504,963 and 505,078, issued upon the applications of William S. Burroughs on September 12, 1893, and No. 823,474, issued upon the application of Alvan Macauley on June 12, 1906.

The Burroughs machine, constructed under and in accordance with the above-mentioned patents, and other similar machines now upon the market, are capable of and regularly emplo ed for listing and accumulating individual items or amounts in vertical columns, and printing totals or sub-totals thereof when desired. In the taking of totals the accumulating wheels are returned to and left in initial or zero position, thereby clearin the machine; while in taking sub-tota s the accumulating wheels are left in the positions to which they have been advanced in accumulating the amount of the subtotal, and the latter is included in the next sub-total or total that may be taken, so that if a series of sub-totals be taken in succession, before taking a final or grand total, each sub-total will include the amount of all preceding sub-totals, as will also the final or rand total.

One 0 the objects of m invention is to equip machines of this cass with means w iereby a series of successive separate totals may be taken, so that each total will represent merely the sum of the particular series of items of which it constitutes a footing, and by means of which at the end of operations a grand total of all of the items, or of all of the separate totals, may be taken.

Another purpose of my invention is to provide means in machines of this class whereby cross accumulating work may be done, and the sum of a series of items in a horizontal line be printed at the right hand end of the line, and the aggregate sum or total of such line-totals be printed at the foot of the column of line-totals at the end of operations.

I have illustrated my invention as embodied in the well-known Burroughs machine, and I have provided novel and efficient mechanism for equipping such a machine for the various sorts of work referred to, without interfering with its normal and familiar operation and use but my invention is not limited in its application or scope to the Burroughs machine, but may be embodied in other machines of the same general class for the same purposes and with the same results.

In the acoompanyin drawings Figure 1 represents in left side e evation the interior mechanism of a machine of the Burroughs type with the resent im rovements embodied therein, a l the parts eing at normal; Fig. 2 represents a right-side elevation of the interior mechanism of said machine, some parts being omitted for the sake of clearness;

ig. 3 is a sectional left-side elevation of a por-' tion of the mechanism illustrating certain transfer devices; Fig. 4 is a front elevation of that portion of the mechanism illustrated in Fig. 3; Fig. 5 illustrates certain of the parts in left-side elevation as the same would ap ear with the usual total key depressed, otted lines illustrating what takes place when said key is released and rises at the end of the forward stroke of the o rating handle; Fig. 6 is a left-side elevation of parts of the mechanism illustrating their relative ositionin when a clearing key is depressed dotted Iines illustrating changed relations of parts at the end of the forward stroke of the operating handle; Fig. 7 is a left-side elevation of certain parts illustrating their relative positionin when the grand total key is depressed, otted lines showing what takes lace when the operating handle reaches t e forward end of its initial stroke; Fig. 8 is a sectional left-side elevation of certain parts of the mechanism under the same conditions as represented in Fi 7; Fig. 9 is a view similar to Fig. 8 but i ustrating the operation of the parts under a different condition, viz., when a transfer is taking place in the auxiliary or grand accumulator; Fig. 10 is a detail elevational view illustrating the action of certainparts when the grand'total key is de ressed, such parts having to do with the isplacement of the ordinary transfer pawls; and Fig. 11 shows certain parts of the mechanism in eft-side elevation as the same would appear when the clearing key is depressed and the o crating handle at the forward end of its initia stroke, dotted lines illustrating what takes place when the handle returns to normal position.

As before stated the invention is here shown as applied to the well-known Burroughs adding and listing machine and although that machine is well-known through extensive commercial use and through various prior patents, nevertheless it will greatly assist in explainin the present invention to enumerate many amiliar parts of such machine before proceedin to a description of the new parts employe for carrying out the present invention.

The reference numeral 291 designates the usual amount keys whose depression positions stops which determine the extent of movement of segmental racks 610 which are mounted upon the forward ends of levers 611. The latter are loosely hung upon a central cross-shaft 600 and extend in rear thereof and carry at their rear ends segmental series of type plates 618 bearin type for printing numbers from 1 to 9. hen the operating handle of the machine is drawn forward a frame 613 carried by the shaft 600 is lowered and racks 610 associated with any banks of amount ke s in which keys have been depressed wilf follow the said frame and until they bring up against the stops set by the depressed keys. The corresponding upward movement of the rear ends of the levers positions type 0 posite the plates 1798 for the printing of t e amount represented by the depressed keys. The printing is effected as the handle reaches the end of its forward stroke by the percussive action of pivoted hammers 715, the latter bein driven rearward by drivers 716 under t e im ulse of springs 780. A bail composed of si e-pieces 712 and a cross-rod 757 normally enga es the hammer drivers but as the operating andle is drawn forward this bail is lifted through the medium of a link 820 connectin the bail with a crank late 814 on a rock-s aft 800. The hammer rivers are, however, restrained by latches 717 and are not relased until the operating handle is about at the end of its forward stroke. The latches 717 are controlled by pawls 718 carried by a swinging frame 700 and controlled by the levers 611 through engagement of the tails of said pawls with inclined shoulders-on said levers. Thus when no key in a bank is de ressed and consequently no movement of t e corresponding lever 611 takes lace the pawl associated with that lever wi be raised above the notch of the associated latch and will not lift the same as the frame 700 swings forward. On the other hand, when the lever 611 is moved by reason of the depression of a key in the corresponding bank the associated pawl 718 is not so displaced but as the frame 700 swings forward will lift the associated latch. Each latch 717 except the extreme left-hand one is overlapped at its forward end by a laterally turned tail of the latch next to the left so that when any latch except the extreme ri ht-hand one is lifted by its awl 718 all the atches to the right will be lifted whether or not levers 611 corresponding with all such latches have been moved. In this way the filling in of ciphers is provided for in decimal places where no digits occur.

The racks 610 cooperate with pinions 916 strung along a cross-rod or shaft which is carried between side- plates 910 and 910, these side-plates together with suitable tieieces and intermediate plates making up a rame which rocks u on a shaft 900 for the purpose of en agin t e pinions with and disengaging t em rom t e racks. In an ordinary operation of the machine for adding an item or amount these pinions remain out of mesh with the racks during the forward stroke of the operating handle and the consequent downward swing of the racks. Then as the handle starts rearwardly the inions are brought into mesh with the rec s so as to partake of their movements in returning to normal. In the operation of takin a total the pinions remairrin mesh with t e racks during the forward stroke of the operating handle so that the downward swing of the racks will turn the pinions backward until they reach zero positions. Then if the pinions are to remain at zero they are disena'ged from the racks so that the latter may return to normal without affecting the pinions. If on the other hand, a sub-total is desired the pinions remain in mesh with the racks throughout the operation so that having been turned backward to zero and the total printed they will be again turned forward so as to display the same accumulation as before being turned backward.

The customary means for controlling the rocking of the accumulator frame comprise a pitman 914 forked or branched at its forward end to engage studs 958 and 958 on the rocking frame, a three-armed plate or lever 913 rockin upon a suitable stud and having its depem ing arm jointed to said pitman, and a rock-arm of lever 813 carried by the rockshaft 800 and having pivoted to its upper end a spring-held wipe-plate or pawl 821 asmoz for cooperating with studs 961 and 961 on the oppositely extending arms of the plate or lever 913. The itman is connected by a link 911 with a beff crank lever 227 drawn forward and upward by a spring 280 which thus serves to engage a notch of the upper branch of the pitman with the stud 958". This is the normal condition which provides for the pinions 916 being moved out of mesh with the racks at the outset of an o eration and into mesh therewith as the ham e starts rearward. The bell crank lever .227 has an n standing arm at its forward end surmountc( by a key 293 which is ordinarily termed.

the total key and whose depression results in disengaging the 'itman from the stud 958" and bringing the rook of the lower branch. of said itman to rest u on the lower stud 958. The ink 911 and bel crank 227 have a slot andin connection so that when the total key as been depressed and the handle is drawn forward the resultant forward thrust of the pitman will cause the latters hook to drop by gravity over the stud 958. Then if the key is held down while the handle returns to normal this hook acting against the stud 958 will rock the accumulator frame and disengage the pinions from the racks. If on the other hand the kc is released and allowed to rise before the iandle starts on its rearward stroke the pitman will be lifted and its hook carried above said stud so that the pinions will remain en aged with the racks and consequently will e turned forward to restore the accumulation.

All of the above enumerated parts are familiar ones in the Burroughs machine and their several functions are retained in the machine of the present invention except that when a sub-total manipulation of the key 293 is performed the accumulation is not preserved by the pinions 916 for the addition thereto of further amounts but the accumulation is transferred to an auxiliary accumulator and the primary accumulator cleared before starting a new list or series of items or amounts. This auxiliary accumulator is composed of a series of pinions 916 adapted to mesh with the pinions 916 and having the same numbers of teeth, said pinions 916 being carried by a rocking frame composed of si e plates 910 and suitable intermediate plates and tie- )ieces. This rocking frame is pivoted u on t e shaft 900 and normally oc- (-upies a owered position with the pinions 916 separated from the pinions 916 as shown in Fi". 1. A lock-frame 920 similar to that usual y employed to lock the pinions 916 is pivoted upon the shaft 900, its locking dogs 926 engaging the teeth of the pinions 916" when the latter are disengaged from the pinions 916, thereb preventing any accidental turning of said inions 916. When the pinions 916 are we ed out of mesh with the racks 610 either in an itemizing opera tion or in the clearing of the pinions 916 either with or without the printing of the total therefrom, the pinions 916 serve to lock the pinions 916, being themselves locked by the dogs 916.

In order to transfer the accumulation of the primary pinions to the auxiliary pinions it is of course essential that the latter shall be unlocked and brought into mesh with the primary unions as the operating handle starts bac toward normal under a sub-total manipulation of the key 293. Therefore said key is e uipped with means whereby in rising it can raw the pinions 916 into mesh with the pinions 916. bar 293 is pivoted at its u er end to t e bell crank lever 227 preferal il g by the sa e stud which connects said lever with the link 911, and at its lower end said her is formed as a hook to engage a stud 910" projectin from one of the side-plates 910" of the auxi iary accumulator frame. Normally an ed e of said bar below the hook rests against t e front side of this stud as illustrated in Fi 1, the bar being drawn rearwardly b a ght s ring 281. When the key293 is d; ressed t e hook bar 293 is lowered and i hook carried some distance below the stud 910 as shown in Fi 5. Then when the key 293 rises the hoo engages the underside of said stud as illustrated in dotted lines in Fig 5 and the frame 910 is lifted and the inions 916 carried into engagement with t e pinions 916. Therefore as the latter pinions are turned forward the inions 916" will be correspondingiy rotated and the accumulation 'of said pinions 916 will be transferred to the pinions 916. In order to guard against any possibility of the two sets of pinions getting out of register in this operation or the occurrence of any independent movement of the pinions 916 the lock frame 920 is preferably caused to follow the-pinions 916 until their teeth have entered between the teeth of the pinions 916 or vice versa. To this end catches 927 are ivoted upon the sidelates 910 their hoo -shaped lower ends eing drawn by sprin s 980 under studs 920 on'the lock-frame. T e upper ends of these catches are formed with cam edges 927" and studs 92'? project from the inner sides of the frame-work of the machine in position to be encountered by said cam edges as the frame 910 rises. Thus the lock-frame 920 will be drawnupward with the frame 910 for a distance'with the pinions 916 locked by the dogs 926. Then as the pinions 916' come into complete mesh with the pinions 916 the catches 927 will be displaced through the cooperation of the cam ed es 927" and the studs 927 whereupon the ck-frame lowers and the pinions 916 are left free to rotate. It will be understood in this connection that said lock-frame is as usual jointed to the lever 917 (Fig. 2) which as usual is spring- An elongated bent ressed into engagement with the V-shaped ower end of the side-plate 910 of the primary accumulator frame, the spring pressure likewise tendin to lower the lock-frame 920.

The accumu ation of the primar pinions having been transferred to the auxi iarv pinions in the manner above described, the primary pinions can again be employed for the accumulation of a new series of items whose total is eventually to be transferred to the auxiliary pinions and added to the accumulation previously transferred thereto. The mere act of drawing forward the operating handle will restore the parts to normal because the rocking of the primary pinions out of mesh with the racks will necessarily result in lowering the auxiliary pinions, means being provided for disengaging the hook bar 293 from the stud 9101at the outset of such operation. Then u on the re-- turn of the operating handle am the movement of the primar pinions into mesh with the racks they won d be separated from the auxiliary pinions 916, the latter being left locked to the dogs 926 and preserving the accumulation transferred to them from the primary pinions. The means for disengaging the hook bar 293' as above mentioned are of the following description: A lever 293 is pivoted intermediate its length upon a cross-shaft 904 and at its forward end enlarged and angularly slotted as at 293 for engagement with a stud 293 on the hook bar. At its rear end this lever 293 overlies a stud 293 on the wi e-plate 821. Conseuently, as the hand e starts forward and t e rock-arm 813 moves rearward the rearward end of the lever 293 is lifted and its forward end depressed. Under normal conditions this would be an idle movement because the stud 293 would be in alinement with the up or part of the angular slot 293. However, when the total ke 293 is depressed said stud travels down the ower part of said angular slot and when said key rises drawing upward the auxiliary accumulator frame it does not rise quite to its full height and said stud 293 does not reach a position of aline-.

ment with the upper part of said an ular slot. Consequently, when the hand e is thereafter drawn forward the cam edge uniting the inner sides of the two portions of said an lar slot will act against the stud 293 {LIN force the hook bar 293* forward to its normal position whereupon the stud 910 is relieved from the restraint of the hook and may pass down along the 'lower rear edge of the hook bar, the auxiliary accumulator frame dropping and being followed by the primary accumulator frame.

The operation above described would of course leave the primary pinions containing the accumulation and the urpose of the invention bein to provide or starting anew with accumu ation of items it becomes necessary to clear the primary pinions before further amounts are set up on the keyboard. To this end a special clearing key 295 is provided the same being mounted upon the upstanding end of a bell crank lever 227 secured to a rock-shaft 208 extending across beneath the rear part of the keyboard. The depending arm of the bell crank 227 is connected by a link 226 to an arm 227 secured to a rockshaft 206 extending parallel with the rockshaft 208 and formln part of such means as shown in said Macau ey patent for effecting the printin of a special character to designate a tota. In the resent instance said arm 22?' is availed o for the purpose of causing depression of the key 295 to produce the-same results as de ression of the ke 293. Thus the lower branch of the bell cran 227 extends in front of a stud 227 on saidarm 227 as shown in Fig. 1. Therefore de ression of the ke 295 by drawing rearwar the arm 227 wil, throu h the medium of the link 226 operate the ell crank 227 and connected parts the same as though the key 293 were depressed for the taking of a total from the primary pinions. However, that total was procured when said key 293 was de ressed and the handle drawn forward an there would be no occasion for again printing such total and furthermore as will hereinafter appear, it would not in some instances be a true total for increments of movement will be imparted to the primary pinions in connection with transfer operations on the auxiliary pinions, the primary pinions then serving merely as transmitting gears between the auxiliary inions and the racks. Therefore the specia clearing key 295 cooperates with devices which disable the printing mechanism so that when the primary lIllOIIS are being cleared merely to prepare tl iem for accumulating a new set of items or amounts and not for the purpose of printing a total no printing will take place.

It has been before explained that an imprint is obtained from the t pe by lifting the atches 717 through the me ium of the awls 718 and it was mentioned that this lifting of latches takes place in an ordinary operation and of course the same is true as to a total printing operation, at an advanced stage, 1. 2., when the bail 712-757 is elevated. Now it will be obvious that if the latches are lifted at the outset of an operation of the machine before the bail has lifted them the hammer drivers and hammers will simply follow the bail as it lifts and there will be no ercussive action and hence no printing. '1 e devices above referred to as under control of the special clearing key 295 for eliminating the printing operate to effect this early release of the hammers. A lever 760 is pivoted intermediate its length upon one side of the frame supporting the printing devices as shown in Fig. l and the lower end of said lever is given a cam formation and held by a spring 781 in engagement with a roller 814 mounted upon the rocklate 814. It will be understood that the atter oscillates inevery operation of the machine. As the portion carrying the roller 814 swings downward accompanying the forward stroke of the operating handle said roller acting against the cam edge of the lever 760 rocks said lever a ainst the stress of its spring 781. Then as t e rock-plate returns to normal with the return stroke of the operating handle said lever is restored to normal by said spring. The upper arm of the lever carries a catch-bar or hook 761 which at its rear end is adapted to enga e a' stud 760 on the furthest latch 717 to t e left. Normally, however, this hook rides idly back and forth above said stud as the lever 760 vibrates. A s ring 782 connecting said lever and said hoo tends to draw the latter into engagement with the stud but such en agement is normally prevented through t e agency of the following described means: The rock-shaft 208 heretofore mentioned carries 9. depending arm 295 which at its lower end has a stud 761 occupying the narrow forward end of an irregular slot 761 in a forwardly-pro'ecting portion of the hook 761. Lowering o the rear end of said hook is normally revented by the engagement of the lower si e of the narrow front portion of said irregular slot with said stud 7 61*. However, when the key 295 is depressed the arm 295' is swung rearwardly and the stud 761' carried into a wider part of the slot 761. Then the hook 761 drops over the stud 760 as shown in Fig. 6 and when the lower end of the lever 760 is swung rearward and its upper end consequently swung forward, which takes place at the outset of the operation of the machine, said hook lifts the latch 717 and through the medium of the overla ping tails heretofore mentioned lifts all of tile latches. In this way the rinting is eliminated for the hammers and t eir drivers will simply follow the bail 712-757 and there will be no percussive action.

Of course the key 295 must remain depressed throughout the operation of the machine so that the primary pinions 916 will be left at zero. Consequently, means are provided for automatically latching down said key and holding it down until the 0 eration of the machine comes to a close. 0 this end there is sus ended from the bell crank 227 a pivoted atch 227 drawn for ward by a spring 282 so that when the key is fully depressed the latch will be engaged under a fixed stud 227 on the frame of the machine as shown in Fig. 6. The means for unlatching this special clearing ke will be hereinafter described because t e same means are employed for unlatching another key which causes the return of the auxiliary pinions to zero and the printing of the grand total accumulated thereon. This grand total key is designated by the numeral 296 and it surmounts an upstanding arm of an elbow lever 296 which is loosely mounted upon the shaft 208 and carries a stud 29 6 to act a ainst the arm 227. Thus it will be seen t iat depression of the key 296 causes the key 293 and its connections to be 0 erated the same as though that key were irectly manipulated. It will of course be understood that theturning of the auxiliary pinions to zero must be effected through the medium of the primary pinions, the latter acting as transmitting gears between the racks and the auxiliary pinions. Hence the primary accumulator frame must be controlled the same as when a total is being taken from the primary pinions or in other words the same as when the key 293 is directly depressed and so held throughout an o eration of the machine. As in the taking 0 a total the rimar wheels must remain in mesh with t e rac s during the forward stroke of the o crating handle. It is of course essential t at depression of the grand total key 296 shall draw the auxiliary pinions into mesh with the primary pinions and keep them in mesh therewith during the forward stroke of the o eratin handle. To this end and as more 0 early s own in Fi 7 the elbow lever 296 is connected by a ink 296 with a lever 296 and the latter carries at its forward end a hook bar 296, the hooked lower end of which n'ormall engages below the stud 910 as shown in ig. 1.

he lever 296 is pivoted intermediate'its length and it will be obvious that upon depression of the key 295 and conse uent elevation of the forward end of said ever the frame 910 will be lifted and the pinions 916' brought into mesh with the pinons 916. It being essential that the key 296 shall remain de ressed throughout the operation of the mac ine it becomes necessary to provide means for disengaging the hook bar 296 from the stud 910 when the o crating handle reaches the end of its forwar stroke, so that the auxiliary pinions may become disconnected from the racks and remain at zero. This hook bar is therefore connected by a link 296 with an arm 918 secured to a rockshaft 904 and connected by a link 9118 with the rock-arm 813. The rear end of said link is enlarged and formed with a slot which embraces a stud on said rock-arm so that no movement of the link takes place until the rock-arm is concluding its rearward swin The rearward movement of the link which then ensues swin s the arm 918 rearward and draws the lin 296' rearward, disengagin the hook bar 296' from the stud 910 whereupon the auxiliary pinions 916' drop out of mesh with the primar pinions 91 6. As the operatinghandle starts ack said primary pinons disengage from the racks in the usual way but they would not then be standing at zero because the dropping of the racks was measured by the zero stops or transfer trips pertaining to the auxiliary or grand total pinions 916 and not by the zero stops or transfer trips lplertaining to the primary inions 916. T 's immediately suggests te necessity for displacing the latter zero stops or transfer trips when a grand total is to be taken and means for this purpose controlled by the rand total key 296 will presently be descri ed. Such description will, however, be prefaced by a descri tion of the transfer devices employed for t 1e two sets of accumulating pinions. The actuating racks 610 have as usual a slot-andpin connection with the levers 611 and are drawn upwardly by springs 680 as shown in Fig. 3. Movements of the racks by said springs is normally prevented by the abutment of studs 651 on the racks against studs 413 on swinging transfer trip frames 413. the latter having the usual beveled lugs 413 for cod eration with pins 916 on the pinions 916. he transfer operation brought aboutv through these devices is the familiar one in Burroughs machines. As the rack engaged with the pinion to which a transfer is to be made may be returnin to normal at the time the pin of the next ower wheel removes the studs -113 from the path of the stud 651 on the rack of the higher wheel, latches 411 are employed as usual to hold the transfer trip frames 413 displaced so that the studs 413 will remain out of the path of the studs 651.

Now it will be understood that when a second accumulation is transferred to the auxiliary pinions transfers from one to another of the latter may become necessary and indeed are bound to become necessary in any supposable practical use of the machine. However, the same transfer devices above described can be and are utilized for effecting transfers between the auxiliary pinions. To this end the depending arms of the trip frames 413 are extended beyond the transfer lugs 413 and at their lower extremities have lateral )rojections as indicated by dotted lines in l ig. 3, which irojeetions overlie the inclined rear edges of levers 413 pivoted in the auxiliary accumulator frame and pressed downwardly as to their rear ends and upwardly as to their forward ends by springs 480. The forward ends of these levers are formed similarly to the lugs 41 3" for reaction with pins 916 on the auxiliary pinions 916. 1

Thus as one of the latter pinions completes a rotation its pin acting upon the inclined edge of the forward end of the associated lever 413 depresses the same and by elevating its rear end effects the same displacement Of the transfer trip frame 413 as cruised by the action of the pin 916" of the associated rimary pinion 916 a ainst the lug 413*. herefore with the 8,11X1 iary pinions 916 in mesh with the primary pinions 916 the racks 610 will 0 erate to impart transfer movements to t e auxiliary inions in the same manner that said rac s impart transfer movements to the primary pinions. ()f 1 course when an accumulation is being transferred from the pinions 916 to the pinions 916 the former necessarily start from zero 1 position their pins 916" being in contact with the strai ht sides of the lugs 413*. Hence there wil of course be no tripping of transl fers by said pins 916".

It will be understood that when a grand total is to be taken the movement of the racks is measured by backward rotation of the pinions 916* to zero and this backward rotation of the pinions 916* is limited by the abutment of the ins 916 against the forward ends of the evers 413 as illustrated in Fig. 8. As heretofore mentioned the primary pinions 916 in such operation must merely operate as transmitting gears and not in any way to measure the movement of the racks. Consequently means are provided for causing the depression of the grand total key 296 to move the ln s 413 out of the paths of the ins 916 on t e primary pinions.

he means ere shown comprise a series of arms 296 loosely hung upon the studs which support the transfer trip frames 413 and de-' signed to act upon the studs 413 res ectively for the urpose of carrying the ugs 413* clear of tiie pins 916". As the pinion J16 furthest t9 the left of course is not required to trip any transfer mechanism the g frame 4J3 associated with it and supplying a zero stop has no lug 413. Consequently, a special arm .296 is employed in this instance, the same having a laterally bent lower end to overlie the frame 413 as shown in Fi 4. All of the arms 296 and the arm 296 have rearward] extending portions as shown in Figs. 8 ant 9 overlying a cross-rod 296 extending between two side-bars 296 hung from suitable studs below the keyboard as shown in Figs. 1 and-l0. This cross-rod 296 has attached to its middle portion a link .296 (Fig. 10) which is connected with a crank arm 296 secured to a shaft 200fthe latter carrying at its left-hand end a depending arm 296 coupled by a link 296' with the elbow lever 296. Through these connections depression of the key 296 is caused to slightly elevate the cross-rod 296 as illustrated in Fig. 10 and thereh swing all of the r arms 1296 rearwardl as wel as the arm 296 and thus remove all of the stop lugs 413 from the paths of the ins 916. Said arms 206" and 296 are pre crab] provided with clips 296" extending under t e cross-rod 296 i so that if e arms will move in both directions therewith although of course the springs 481 which return the transfer trip frames 413 might be relied upon to return said arms when the latches 411 are restored to normal.

It will be understood that in the regular Burroughs machine the latches 411 are restored to normal at the end of the forward stroke of the operating handle through the medium of a bail composed of side arms 904 secured to the shaft 904 and a cross-rod 904 Of course when the transfer trip frames are all moved rearwardly through depression of the key 296 in the manner alread described their forwardly extending portions will escape from-the notches of the atches 411 the same as when said frames are moved rearwardly in transfer operations, and the latches 411 engaging over said forwardly rojecting portions of the tri frames will he d the latter displaced. he displacement of these tri frames would ordinarily result in trans ers taking place but this is prevented when the grand total key 296 is depressed, byreason of the fact that the arms 296 engage over the studs 651 as the studs 413 retreat from said studs 651. Thus no movement of the accumulator pinions is permitted as the auxiliary set come into mesh with the primary set and the grand total accumulated on the auxiliary set of pinions is not disturbed.

The key 296 is held down by a latch 296 drawn by a spring 296* into engagement with a fixed stud 296 on the framework. This latch is displaced at the conclusion of an operation of the machine through the same means as operate to displace the previously mentioned latch 227 Thus a latch-displacing bar 860 is ivoted to the upper end of an arm 861 and t e lower end of said arm carries a stud 862 against which the upper end of the rock-arm 813 bears norma ly thrusting the bar 860 toward the rear against the stress of a spring 880. Said bar 860 embraces the shaft 600 for guiding purposes, the openin in the bar being large enou h to permit 0th longitudinal and up and r own movement of the bar. Aspring 881 o crates to lift the rear end of the bar and t us engage two inclined lugs 860 and 860 thereon with studs 863 on the two latches 227 and 296. Thus whenever either of the keys 295 or 296 is depressed its stud 863 comes down on the top of one of the other of the inclined lugs and depresses the bar 860 against the stress of its spring 881. As the handle starts forward and the rockarm 813 moves rearward the spring 880 rocks the lever 861 and thus the inclined lug is drawn forward and then the sprin 881 moves said lu up in front of the stu 863. As the operation of the machine concludes the rock-arm 813 acts against the stud 862 and thrusts the bar 860 rearward. Thus one or the other of the lugs 860 or 860 will dislace the latch 296 or 227 as the case may he and release the depressed key.

The depression of the key 296 as already stated results in depression of the key 293 also and hence in the same downward movement of the hook bar 293 as takes place when the said key 293 is directl Y depressed. It will be recalled that when the latter operation is erformed the said hook bar engages under t e stud 910" so that in the return of the key 293 the auxiliary accumulators 916 are drawn into mesh with the pinions 916. However, this does not take lace in the case of depression of the key 293 y the key 296. Means are provided to prevent any such result because if permitted the auxiliar accumulator would not be left at zero as esired. It will be recalled that the depression of the key 296 displaces all of the transfer trip frames 413 and although the displacing arms 296* prevent transfer movements of the racks in the manner already described, yet with the rise of the key 296 at the conclusion of the machines operation these arms are of course restored to normal ositions forwardly beyond the studs 651. With this restoration the racks are freed for transfer movements the transfer trip frames being still held back by the latches 411. Resultant movement of the primary pinions is of no moment because they have merely been acting as transmitting gears and must be separately returned to zero anyway before further operations of the mac line. However, such transfer movements would be disastrous if transmitted to the auxiliary pinions which should of course be left at zero at the conclusion of a grand totalizing operation. It is true that the primary pinions are not in mesh with the racks during the return of the latter to normal but 'ust as the operating handle reaches the en of itsrearward stroke the primary pinions are rocked into mesh with the racks as in. the regular Burroughs machine, this bein effected by the action of a roll 311 (carrie by the usual full stroke sector 311) upon a rearwardly extending arm 910 of the primary accumulator frame, see Fig. 2. TlllS takes place at about the same time that the key 296 is being released, consequently the primary pinions will be in mesh with the racks at the time when the arms 296 move from over the studs 651. Now in order to revent the pinions 916 from being drawn mto engagement with the pinions 916 as the key 296 rises the link 296' is provided with a stud 296 adapted to cooperate with a cam edge 293 on the hook bar 293. When the key 296 is depressed said link 296 is elevated with the hook bar 296 while the hook bar 293' is being lowered and the resultant co-action between the stud 296" and the cam edge 293 will cause said hook bar 293 to be thrown forward out of line with the stud 910 as shown in Fig. 7. The combined eflect of the rise of the link 296 and the lowering of the hook bar 293" is to bring the stud 296 into engagement with the rear ed e of said hook bar 293 a short distance a ove the cam edge 293. It will thus be seen that while depression of the ke 296 may result in causing the hook of the ar 293 to momentarily enga e under the stud 910', when said key 296 is ullv depressed, said hook will be held out of line with said stud. At the time when the key 296 is released the auxiliary accumulator frame is in its lowest position and the stud 910 is very slightly above the line of the transverse edge of the hook. Now the latter is held out long enough through the engagement of the stud 296 with the cam edge of the hook bar 293 to revent the hook of the latter engaging um er the stud 910 as it rises, said bar 293 simply striking a ainst the stud and riding up the front side 0% the latter. When the key 293 is alone depressed there is not the same co-action between the stud 296 and the cam edge of the bar 293" because said stud does not move. It will be understood that the s ring 281 holdin the hook bar 293' IGBJ'WELILl lS lighter than the spring 288 which draws the link 296 forward. Furthermore, any tendency of the cam edge 293 to thrust said link rearwardly would be resisted by the spring 988 which draws the arm 918 forward.

Reference has heretofore been made to devices for camming the hook bar 293 out of engagement with the stud 910 in a blank or itemizing operation of the machine following an o eration for transferring an accumulation rom the primary to the grand total pinions. Means are provided to prevent undue vibration of said hook bar as might otherwise take place throu h the operation of said camming devices wit anyone of the three keys 293, 295 or 296 depressed. The depression of any one of these keys carries the stud 293 (Fig. 1) down the lower portion of the cam slot 293. Consequently vibration of the lever 293 would result in an excessive outward throw of the hook bar 293. It is not necessary that there'should be any action of the cam' head of the lever 293 upon the hook bar 293 when any one of the keys 293, 295.0r 296 is de ressed. Therefore said lever 293 is disable by depression of any one of said keys. To'this end the bell crank lever 227 carries a depending arm 227 which swings rearwardly when said bell crank is rocked by depression of any one of the keys 293, 295 or 296 and in so swinging rearwardly acts against the stud 293 and thus displaces the wipe-pawl 821 carrying said stud beyond the end of the lever 293 and thus preventing any movement of said lever by said wi e pawl. This displacement of the wipe paw 821 does not disturb the regular operations of the pitman 914. when the total ke is depressed it is only necessary that the hook of the lower branch of said pitman shall enga e the stud 958. Gravity alone may be su cient to bring about this enga ement, the cam edge of the pitman shdmg over thefrorit side of the stud. But the displacement of the wipe pawl 821 is not carried so fares to prevent lts co-action with the stud 961 if need be to move the pitman 914 slightly forward if it does not so move through gravity and effect the necessar engagement between the stud 958 and the 00k of the pitman.

The usual latches 415 normally support the racks 610 and said latches are as usual individually displaced through the medium of detent strips 214 operatedupon by the amount keys. Also the usua universal cross-rod 204 extends in front of the latches and this cross-rod is connected by links 226 to the bell crank 227 and an arm 227" on the right-hand end of the shaft 202 to which the said bell crank is secured. It will thus be obvious that de ression of the total-key 293 withdraws all tiie latches from engagement with the racks as usual and a similar result is brought about b the depression of either of the keys 295 an 296.

It will now be seen that the above described construction provides for the accumulation of a series of items or amounts, the printing of the total thereof, the transfer or duplication of the accumulation in a separate set of counter-wheels or pinions and indefinite repetition of this procedure whereby a grand total is obtained representing the sum of all of the individual accumulations. It will furthermore be seen that such a grand total can at any time be printed. Thus it is made possible to print several lists of amounts with the several totals of such lists and a grand total representing the sum of the individual totals. All of the items and all of the totals ma be printed in the same vertical column if desired or the different lists of items can be printed in separate columns Where the laterally shiftable paper carriage such as shown in Fig. 2 is employed. Individual totals may ap car as footings at the bottom of the several co umns and the and total ma be printed off to one side or w erever desire It will likewise be seen that items can, if desired, be printed one after another in a horizon tal line by shifting the paper carriage and the accumulation of such ltems printed as .a total at the end of such line, and that this operation can be repeated indefinitely. Then the grand total representing the sum of the various individual totals can be printed as a footin of the latter.

Whi e the form of means here shown and described is well calculated to thorou hly fulfil the objects primarily stated, it be obvious that considerable modification can be made in the embodiment of the invention without departing from its scope.

What is claimed is:

1. In a machine of the character described, the combination of a set of actuators and two sets of accumulator wheels, motion being transmitted between the actuators and the wheels of one set through the medium of the wheels of the other set in either direction.

7 2. In a machine of the character described,

the combination of a set of actuators and two sets of accumulator wheels geared together, motion being transmitted between the actuators and the wheels of one set through the medium of the wheels of the other set in either direction.

3. In a machine of the character described, the combination of a set of actuators and two sets of accumulator wheels, upon one of which sets of wheels successive items or amounts can be accumulated by repeated operation of said actuators and upon the other of which sets of wheels successive accumulations of the first set of wheels can themselves be accumulated, motion being transmitted to the last mentioned set of wheels through the medium of the first mentioned set of wheels.

4. In a machine of the character described, the combination of a set of actuators and two sets of accumulator wheels, upon one of which sets of wheels successive items or amounts can be accumulated by repeated operation of said actuators and upon the other of which sets of wheels successive accumulations of the first set of wheels can themselves be accumulated, motion being transmitted to the last mentioned set of wheels through the medium of the first mentioned set of wheels and the latter capable of being reset to zero without ali'ecting the accumulation on the former.

5. In a machine of the character described, the combination ofa set of actuators and two sets of accumulator wheels, upon one of which sets of wheels successive items or amounts can be accumulated by repeated operation of said actuators and upon-the other of which sets of wheels successive accumulations of the first set of wheels can themselves be accumulated, motion being transmitted to the last mentioned set of wheels through the medium of the first mentioned set of wheels and the latter capable of being reset to zero without affecting the accumulation on the former which is itself capable of being reset to zero.

6. In a machine of the character described, the combination of a set of actuators, two sets of accumulator wheels geared together, motion b ing transmitted between the actuators and the wheels of one set through the medium of the wheels of the other set in either direction, and means for locking one set of wheels while the other is in gear with it.

7. In a machine of the character described,

the combination of a set of actuators, two sets of accumulator wheels, motion being transmitted between the actuators and the wheels of one set through the medium of the wheels of the other set in either direction, and means for locking one set of wheels by the other.

8. In a machine of the character described, a set of reciprocat' actuators, means for measuring the excursions thereof, two sets of accumulator wheels movable out of and into engagement with said actuators andone deriving motion from the latter through the medium of the other, means for regulating the periods of engagement and disengagement between accumulator wheels and actuators to provide for successive accumulation of amounts by one set of wheels through repeated operation of the actuators or for the turning of those wheels to zero, together with means for controlling relationship between the other set of wheels and the actuators for causing an accumulation on the first set to be transferred thereto or said other setof wheels to be turned to zero.

9.' In a machine of the character described, the combination of a set of reciprocatory actuators, printing type arranged to be set thereby, two sets of accumulator wheels, one exert a control over the other, means for various y measuring excursions of said actuators for accumulatin successive items or amounts on one set 0 wheels, and controlling devices whereby successive accumulations of said wheels may be transferred to the other set of wheels by the actuators, and either set of wheels may be turned to zero to set up totals by the printing type.

10. In a machine of the chalracter described, the combination of a set of reci rocatory actuators, printing type arrange to 'be set thereby, two sets of accumulator wheels movable into and out of engagement with the actuators, one exerting a control over the other, means for variously measuring excursions of said actuators for accumulatin successive items or amounts on one set'o wheels, and means for regulating the periods of engagement between accumu ator wheels and actuators and the control of one set of wheels by the other to eflect item accumulation, transfer of accumulation between the sets of wheels, or the settin up of totals-of accumulation of either set y the printin type.

11. n a machine of the character described, a 'set of reciprocatory actuators, means for measuring the excursions thereof, two sets of accumulator wheels movable out of and into engagement with said actuators and one derivin motion from the latter through the medium of the other, means for keeping the accumulator wheels out of engagement with the actuators during movement of the same from normal and keeping said wheels enga ed with the actuators during movement 0 the latter to normal, said means bein adjustable to reverse the order of relations ip between wheels and actuators, and a key for adjustin said means,

said key having connections or controlling the transfer of accumulations between the two sets of wheels.

12. In a machine of the character described, the combination of a set of reciprocating actuators, a set of accumulator wheels engageable therewith and disengageable therefrom, means for effecting the engagement and disengagement of said wheels and actuators, a second set of wheels deriving motion from the actuators and the first set of wheels, and a key for controlling the order of engagement and disengagement of wheels and actuators and the transfer of accumulations between the two sets of wheels, said key rendering the second set of wheels 0 erative to receive the total of the first set 0 wheels afterthe latter has been turned to zero.

13. In a machine of the character described, the combination of a set of actuators, two sets of accumulator wheels, motion being transmitted between the actuators and the wheels of one set throu h the medium of the wheels of the other set in either direction, means common to the two sets of wheels for imparting transfer or carryin movements thereto, and separate sets 0? transfer tripping devices, one set for each set of wheels.

14. In a machine of the character described, the combination of a set of actuators, two sets of accumulator wheels, motion being transmitted between the actuators and the wheels of one set through the medium of the wheels of the other set in either direction and the actuators being capable of extra movement for transfer purposes, and pawls normally preventing such extra movement, each set of wheels having tripping devices to displace said pawls.

15. In a machine of the character described, the combination of reciprocatin carriers, racks thereon capable of limiter independent movement, springs for effecting such movement, pawl preventlng such movement, a set of accumulator wheels movable into and out of en agement with said racks and adapted to e turned thereby, said wheels equipped to dis lace said awls, and a second set of accumu ator whee s arranged to receive motion from the racks and the first set of wheels, and means whereby said second set of wheels may displace the pawls independently of the first set.

16. In a machine of the character described, the combination of reciprocating racks, a set of accumulator pinions movable into and out of en agement therewith, a second set of acoumu ator pinions movable into and out of engagement with the first set, and means for vary ng the order of enga ement and disengagement between the rac s and the first set of pinions and the latter and the second set of pinions whereby successive items or amounts can be accumulated by the first set of pinions and the accumulation transferred to the second set of pinions and the latter subse uently turned to zero by the racks throug the medium of the first set of inions.

17. n a machine of the character described, the combination of reciprocating racks, a set of accumulator pinions movable into and out of engagement therewith, a second set of accumulator pinions movable into and out of engagement with the first set, and means for varying the order of engagement and disenga ement between the racks and the first set 0 pinions and the latter and the second set of pinions whereby successive items or amounts can be accumulated by the first set of pinions, the latter turned to and left at zero by the racks or turned to zero and the accumulation immediately restored and duplicated in the second set of )inions, and the second set of pinions turne to zero by the racks through the medium of the first set.

18. In a machine of the character described, the combination of reciprocating racks, a set of accumulator pinions movable into and out of engagement therewith, a second set of accumulator pinions movable into and out of engagement with the first set, means for varying the order of engagement and disengagement between the racks and the first set of inions and the latter and the second set of pinions whereby successive items or amounts can be accumulated by the first set of pinions and the accumulation transferred to the second set of pinions, and means for locking both sets of pinions against turning when disengaged from the racks.

19. In a machine of the character described, the combination of reciprocating racks, a set of accumulator pinions movable into and out of engagement therewith, a sec ond set of accumulator pinions movable into and out of engagement with the first set, means for varying the order of engagement and disenga ement between the racks and the first set 0 pinons and the latter and the second set of pinions whereby successive items or amounts can be accumulated bythe first set of pinions and the accumulation transferred to the second set of pinions, and means for locking the second set of pinions against turnin when disengaged from the first set of inions, said means serving also to lock the latter against turning when disengaged from the racks.

20. In a machine of the character described, the combination of reciprocating racks, a rock frame, a set of pinions in the 1 scribed, the ;combination of reciprocating latter adapted to be engaged with and disengaged from said-racks by the rocking of said me, a second rock frame concentric with '1 the latter, a set of pinions in said second rock frame adapted to be engaged ,with and disengaged from the first set of pinions by the rocking of said second frame, and means for rocking both frames with provisions for variously t' the movements thereof whereby the rac may be caused to successivel accumulate amounts on the first set of pinions without affecting the second set of pinions, or return said first set of pinions to zero leaving them so positioned or again advancing them to restore the accumulation simultaneously duplicating such accumulation in the second set of 'PIDiOIlS.

21. In a machine of the character described, the combination of reciprocating racks, a rock frame, a set of pinions in the latter adapted to be engaged with and disengraged from said racks by the rocking of said ame, a second rock frame concentric with the latter, a set of pinions in said second I rock frame adapted to be engaged with and disengaged from the first set of pinions by the rocking of said second frame, means for rocking the first mentioned frame with provisions for timing the movements so the racks may operate to successively accumulate amounts on the pinions in said frame or may return said them so positione or again advance them to restore the accumulation, and means for rocking the second frame to bring its pinions into mesh with those of the first frame for receiving the same accumulation as restored on the latters pinions or for causing its own pinions to be turned tozero by the racks.

22. In a machine of the character described, the combination of reciprocating racks, a rock frame, a set of pinions in the latter adapted to be enga ed with and disengaged from said racks the rocking of said frame, a second rock ame concentric with the latter, a set of inions in said second rock frameadapted to be engaged-with and disengaged from the first set of pinions by the rocking of said second frame, means for rocking both frames with provisions for variously timing the movements thereof whereby the racks may be caused to suecessively accumulate amounts on the first set of pinions without affecting the second set of pinions, or return said first set of inions to zero'leaving. them so positione or again advancing them to restoreethe accu;

mulation simultaneously duplicating such accumulation in the second set of pinions, and means for locking the latter set of pinions against turning when disengaged from the first set.

imons to zero and leave racks, a rockframe, a set of pinions in the latter adapted to be engaged with and disengaged from said racks b the rocking of said frame, a second rock frame concentric with the latter, a set of inions in said second rock frame adapted to e engaged with and disengaged from the first set of pinions by the rocking of said second frame, means for rocking both frames with provisions for variously timing the movements thereof whereby the racks may be caused to successivel accumulate amounts on the first set of pinions without affecting the second set of pinions, or return said first set of pinions to zero leaving them so positioned or again advancing them to restore the accumulation simultaneously duplicating such accumulation in the second set of pinions, and means for locking the latter set ofpinions against turning when disengaged from the first set, the latter being locked when disengaged from the racks by reason of engagement with the other set of pinions.

24. In a machine of the character described, the combination of reciprocating racks, a rock frame, a set of pinions in the latter adapted to be engaged with and disengaged from said racks by the rocking of said frame, a set of pinions in said second rock frame concentric with the latter, a set of inions in said second rock frame adapted to be engaged with and disengaged from the first set of pinions b the rocking of said second frame, means or rocking both frames with provisions for variously timing the movements thereof whereby the racks may be caused to successively accumulate amounts on the first set of pinions without affecting the second set of pinions, or return said first set of pinions to "zero leaving them so positioned or again advancin them to restore the accumulation simu taneously duplicating such accumulation in the second set of inions, a third rock frame having a set of ocks to engage the latter set of pinions, and means for rocking said third frame to carry it and the second frame toward the first frame as the latter carries its pinions away from the racks.

25. In a machine of the character described, the combination of reciprocating .fi figged from the first set of pinions by the roe mg of said second frame, means for rocking bot-h frames with provisions for variously timing the movements thereof whereby the raclm may be caused to successively accumulate amounts on the first set of pinions without affecting the second setof pinions,

or return said first set of pinions to zero leav- 7, ing them so positioned or again advancing 5 them to restore the accumulation simultanef scribed, the combination of reciprocating racks, a set of accumulator pinions movable ously duplicating such accumulationin the second set of pinions, a third rock frame having a set of locks to engage the latter s'et of unions, and means for causing said third frame to advance a distance with the second frame when the latter is carrying its pinions into engagement with those of the first frame.

.26. In a machine of the character described, the combination of reciprocating racks, a rock frame, a set of pinions in the.

latter adapted to be engaged with and disengaged from said racks by the rocking of said frame, a second rock frame concentric with the latter, a set of pinions in said second rock frame adapted to be engaged with and disengaged from the first set of pinions by the rocking of said second frame, means for rocking both frames with provisions for variously timing the movements thereof whereby the racks may be caused to successively accumulate amounts on the first set of pinions wit hout affecting the secondset of pinions, or return said first set of pinions to zero leaving them so positioned or again advancing them to restore the accumulation simultaneously duplicating such accumulation in the second set of )inions, a third rock frame having a set of l ions, catches on the second frame engaging said third frame to carry the latter a distance with said second frame when the unions of the latter are to be moved into mesli'with the pinions of the first frame, and means for disabling said catches as the second set of pinions come to mesh with the first set.

.27. In a machine of thev character de scribed, the combination of reciprocating racks, a rock frame, a set of pinions in the latter adapted to be en aged with and disengaged from said racks )y the rocking of said frame, a second rock frame concentric with the latter, a set of pinions in said second rock frame adapted to be engaged with and disengaged from the first set of pinions by the rocking of said second frame, means for rocking both frames with provisions for variously timing the movements thereof whereby the racks may be caused to successively accumulate amounts on the first set of pinions without affecting the second set of pinions, or return said first set of pinions to zero leaving them so positioned or again advancing them to restore the accumulation simultaneously duplicating such accumulation in the second set of pinions, a third spring-held rock frame having locks to engage the latter set of pinions, catches on the second frame springdrawn into engagement with the third frame to carry the same a distance with the second frame when the )inions of the latter are to be moved into mesf frame, and abutmcnts for displacing said ocks to engage the latter set of pin- 1 with the pinions of the first catches as the second set of pinions comes to mesh with the first set.

28. In a machine of the character deinto and outof engagement therewith, a second set of accumulator pinions movable into and out of engagement with the first set, means for moving the first set of pinions normally timed to keep them disengaged from the racks durin the latters advance and engaged therewiti during return of racks to normal, and a key for disabling said means whereby the said pinions remain in mesh with the racks during both advance and return thereof, said kev operating to engage the second set of pinions with the first during the return of the racks.

29. In a machine of the character described, the combination of reciprocating racks, a set of accumulator pinions movable into and out of engagement therewith, a second set of accumulator pinions movable into and out of engagement with the first set, means for moving the first set of pinions normally timed to keep them disengaged from the racks during the latters advance and engaged therewith during return of racks to normal, said means being adjustable to effect the reverse order of operation, and a key for so adjusting said means manipulative to wholly disable the same causing the pinions to remain in mesh with the racks during both advance and return thereof, said key when so manipulated operating to engage the second set of pinions with the firs during the return of the racks.

30. In a machine of the character described, the combination of reciprocating racks, a rock frame, a set of pinions in ,the latter adapted to be engaged with and disengaged from said racks bv the rocking of said frame, a second rock ame concentric with the latter, a setof inions in said second rock frame adapted to e engaged with and disengaged from the first set of pinions by the rocking of said second frame, means for rocking the first mentioned frame normally timed to keep the pinions thereof disengaged from the racks during the latters advance and engaged therewith during their return to normal, a depressible spring-held key for disabling said means and thereby causing said pinions to remain engaged with the racks during advance of the latter, the release and restoration of said key at an inter-'

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