US1270752A - Combined type-writing and computing machine. - Google Patents

Description

@.n. DEGENER.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JUNE 25.1913.

Patented June 25, 1918.

2 SHEETS-SHEET I.

III.

'6. o. DEGENER.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED IUNE 25.1913 P l Patented June 20, 1918.

2 SHEETS-SIIEET Z.

N u h eUs'rAvn o. indenne, or Naw YORK, n. MACHINE COMPANY, or NEW YORK,

Y., ASSIGNOR T0 UNDERWOOD COMPUTING- N. Y., A CORPQRATION OF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Application filed .lune 25, 1913.

To all whom it may concern:

Be it known that l, GUs'rAvE O. DEGENER, a citizen of theUnited States, residing in New York City, in the county of New York and State of New York, have invented certain new and useful Improvements in Com bined Type-lllriting and Computing Machines, of which the following is a specification.

My invention relates to computing machines, and is disclosed as applied to acomputing machine of the Underwood-fright type.

ln my application No. 753,254, tiled March 10, 1913, is disclosed a poweridriven mechanism controlled by the numeral keys of the typewriter and operating a master wheel, which turns se'rz'atz'm the computing Wheels of a totalizer. The computing mechanism comprises a wheel whereon are index pins sett'able concomitantly with the operation of the numeral keys of the typewriter.

Each key selects an index pin and releases a trip shaft, which shaft locks the-typewriter carriage against movement. At the same time an electric circuit is closed, starting the motor. The trip shaft causes said motor to set that index pin which has just been selected by the key operated; and the motor then goes on to turn the master wheel to a corresponding extent, whereby the number is registered in the totalizer.

totalizer carriage is also shown in said application, which is manually connectible to the typewriter carriage, so that the two more together; and means are also shown in said application for locking the computing carriage against travel while the computing mechanism is in motion, and thereby locking the typewriting machine carriage against motion.

Each computing wheel is shown in said application as normally held alined by a spring detent, as is usual in totalizers of the `ilndei-wood-lllright type.

According' to one feature of the present invention, the detent of the active computing wheel may be moved to ineffective position before the master wheel turns7 thus re- Specication of Letters Patenti Patented J" une 25, li. Serial No. 775,621.

ducing the noise and wear incident to turning a toothed wheel against the opposition of the detent.

Said detent may include an arm which forms part of a lock for 'directly holding the computing machine carriage against stirring while the master wheel is turning. This lock is preferably so built that it is strong enough to overcome any tendency of the typewriter carriage to incorrectly position the computing machine carriage, and therefore it positively alines the computing machine carriage.

Another feature of the present invention is to render the mechanism so compact that the totalizer may be at the front of the typewriter and near to the printing point in a visible writing machine, while at the same time the totalizer may be so formed that-it only slightly overhangs the typewriter keyboard, and so doe's not handicap the oper-v ator in using the machine. For this purpose the totalizer carriage may be supported on the usual front bar of the Underwood typewriting machine and the totalizer itself may be so mounted on said carriage that the numeral wheels lie at the foremost upper corner of said totalizer, thus bringing them to a convenient point for the operator to read, while at the same time the master wheel is adjacent said front bar, where it is less likely to be accidentally struck. The carryover.mechanism may be beneath the master wheel and formed of small wheels, thus allowing the front of the totalizer to be cut away sharply from the sight opening, through which the dial wheels are read. The totalizers are more conveniently attached to the carriage than heretofore.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a front view of an Underwoodlllright combined typewrit-ing and computing machine, showing so much thereof as is necessary to the understanding of my invention.

Fig. 2 is a similar part sectional side View of the same.

Fig. 3 is a perspective view showing details of the computing machine carriage and some adjacentparts. y

Fig. 4 is anend`view`ofiFig. 8(

Fig. 5 is a vperspective view, largely broken away, of many of the parts seen in Fig. 61s an 'endview partly cut away of part of Fig. 5.

Mriages.. y Fig. 11- isaplanview of another form of totalizerwviththe top cover removed.

Numeralkeys 1 andfalphabet keys 2 of the Underwood typewriting machine are mounted in the frame 43 in any usual or desired manner, and as described in my application 7 53,254,.filed MarchlO, 1913, each numeral key: when operated releases the trip shaft 4,

so as to cause the computing mechanism to rotate the master wheel drive shaft 5 to an extent determined by the key depressed,

`thereby causing the master wheel 6 (see Fig. 8) to rotate the computing wheel 7 with which it is at the moment engaged.

The computing wheels 7 form a gang which are constantly in mesh with. dial wheels 8. Said dial wheels bear on their outer peripheryr digits 9, and are rotatable to cause their digits to appear before the sight hole 10 of a totalizer 11. As herein disclosed said totalizer forms part of a comv puting machinecarriage, which moves con-v comitantly lwith .the typewriter carriage, so as to bring its computing wheels 7 serial/im into engagement with the master wheel 6, said master wheel (as best seen in Fig. 8) having external teeth 12 which mesh with internal teeth 13 on the computing wheels,

there being as iusual ten teeth 13 where the computing mechanism is used to register numbers in the decimal system.

The typewriter carriage 14 (see Figs. 2 and 7 is supported on rolls 15 which travel in a track 16 on the front bar of the type-V writing machine. Said carriage is fed along in any desired lor usual manner by means of a universal bar (not shown) which is operated at every depression of a type key. Said carriage includes the usual platen, not shown, whereon numbers and letters are written, and said carriage carries along the computing machine carriage with it by means of an arm 17 pivoted to an extension 18 of the typewriter carriage frame, on

which arm is fast a double dog or stop 19,

which stop when thrown down forwardly en- Lemma ters between the teeth of a rack bar 2G fast on the computing machine carriage; thus when the typewriter carriage travels along,

Vit carries with it the computing machine carriage and the totalizers 11 mounted on said carriage.

The computing machine carriage includes an E-shaped frame bar 21, and in a depression in said frame bar is mounted a rack bar 22 having openings therein at letter-space intervals, said rack barbeing adapted to hold in position the totalizers 11 by means of locking dogs 23, each dog having an oblong enlarged end which enters into an elongated opening 22". When the dog has been inserted and turned across the openin 22b by means ofa handle 24, the enlarge 'end may be drawn up tight against the lower face of the rack bar, against the tension of a spring 22a, thus locking the totalizer.'

Each dog 23 is mounted on an extension 25 of itsA totalizer 11, which extension overlies the upper flat surface 26 of the frame bar 21 on each side of the rack bar 22. fil-.e extension 25 includes a tongue 25a .which enters between the surfaces 26 andk alines the bar a track bar 28 having in the front there of an inverted horizontal track 29, and a vertical track 30, while at the .rear are two inclined tracks 31 and 32 set'at right angles to each other, but inclined so that one of them lies nearly parallel. to the top of the ordinary front bar of the typewriter.

The computing carriage 21 includes on. its internal surface tracks opposing these tracks, and between the corresponding sets ofl tracks are interposed rollers 86 joinedi together by frames' in pairs so that two adjacent rollers have their axes at rightangles to each other, and the pairs are joinedtogether by a rod. 34 thus making a frame which serves as a space guide .for the` rollers. yThis roller bearing insures that the computing carriage shall travel easily and that the thrusts on the computing machine carriage shall be received on adequate surfaces.

The computing machine carriage, as shown in Fig. 1, maybe of sutlicient length to accommodate several totalizers 11, and the rack bar 22 is properly alined therein by means of the threaded ends of brazed eXtencarriage is ecrrespondin to one side, thus allowing the operator to re an unobstructed view ot' the pointer 38 on the typewriter carriage and the scale bar 89, by which said pointer indicates the printing position of the typewriter carriage.

ln a totalizer of the usual Underwood- "iiilright type, whenever a dial wheel turns tc bring its zero to the sight opening l0, it turns the computing wheel meshing therewith, so thatl a broad tooth 4:6 on said computing wheel gives a gear al forming part oia a carry-over wheel a slight turn, `thus bringing a group of interrupted teeth 42 on said carry-over wheel to where tney will he struck hy a power-driven roll or gear a3.

aid power-driven roll will complete the turning ot said carry-over wheel an aliquot portion of a revolution. ln so 'turning the carry-over wheel, the adjacent computing wheel of the higher denomination is turned by gear 43 forming another integral part ot said carry-over wheel, said gear constantly meshing with the external teeth all on said adjacent computing wheel, said teeth /l-/l loeing the teeth with which said computing wheel meshes with its dial wheel 6. Thus every time a dial wheel turns to bring its Zero wheel to a sight opening, it turns the adjacent dial wheel one unit space, making a carry-over. To prevent the carry-over wheel from being overthrown by the powerdriven wheel 43, a detent roll 45 is ournaled on an arm 46, so that a spring l? normally presses the detent roll Ll5 into a roundedout space between two groups of the teeth of the gear 4l. Since each carry-over wheel is constantly in mesh with the computing wheel next higher in denomination and said computing wheel is constantly in mesh with its own dial wheel, these detent rolls hold the dial wheels aways alined. y

Means are provided whereby, whenever a numeral key is depressed, the dctent roll l5, holding the computing wheel at the moment engaged by the master wheel, is carried clear or' its carry-over wheel, so that said computing wheel may be freely turned by the master wheel without the noise and wear incident to turning va wheel held by a detent. This release is brought about by the trip shat't l which is allowed to rotate every time a numeral key is operated, thus permitting a strong' spring 64 to carry upwardly a control har 50. Said control bar has pivoted at its upper end a link 51, which link whenever the control bar rises, by means of a rock arm 52, swings a rock shaft 53 so that a rock arm 54 fast on said shaft will project a plunger 55 against an extension 56 of the detent roll arm 46 to move said ,arm outward. This plunger 55 is pointed and made of hardened steel, and is practically alined with a master wheel 6, so that it swings and makes ineffective the detent roll l5 which y holds the computing wheel which the master wheel is about to turn, and in so doing, carries the extension 56 of the detent arm i6 into a lug 57 on the typewriter Jframe. Said lug is recessed at 58, the sides of said recess forming a sharp V which cooperates with the correspondingly t-shaped sides 59 of the extension 56 and fits them closely. Then the plunger 55 has thus moved a detent bar extension 58 into the lug 57, said extension positively holds the totalizer ll against movement. After this has been done the master wheel is connected to the power by the trip shaft Ll, and then may be rotated. To make this holding positive, said extension 6 is arranged to engage the lug 57 over a considerable portion ot its length, so that the lll-shaped sides will get a irm hold on each other. Furthermore, lost. motion is prevented by having the upper ends of the de tent bars 46, as seen in Fig. S, closely fitting against each other, and the end hars bear against collars 59 tast on a shaft 60, fast in the sides 6l ol the totalizer.

The plunger 5 5 slides in guides 62 fast on the frame ot' the typewriting machine, and the rock arm moves the plunger back and forth in said guides by means ot a pin 68 fast on the plunger, which pin is engaged by said rock arm. The spring 6l is ot such strength that it will positively aline the proper computing wheel with the mas ter wheel, being strong enough to overcome the ordinary spring (not shown) which drives the typewriter carriage. lvloreover, the V sides center the computing carriage it it is not exactly alined i i its proper position of rest. The pin 63 is so mounted on the plung r 55 that a slight overthrow oi the plunger will bring said pin against the forward guide 62, and thus prevent the spring 6l from materially overtlnowing the control bar 50, ii the extension 56 should break oft.

ln order to give further rigidity to the rock shaft 53, said shaft is carried in journals 65 near the rock arm 5l thereon, and is also journaled in the side plate 66 or the computing machine near the rock arm 52 thereon.

The master wheel 6 is nearly in th'e plane of the printing point and is carried on a long steel shaft 67 which is ournaled at one end only on the side plate 66 in a long hearing 68 tast on said plate, thus the spring ot said shaft gives some play so as to allow the master wheel to enter a totalizer if there should be any sag in the machine. To insure the master wheels thus entering. the wheel includes a hub 69 which is nearly of the size of the internal teeth 13 of the computing wheels, and said hub is beveled ot at 70 at each end, so that in eilect the ends wheel, as is usual in the Underwood-Wright machine, is driven by a bevel gear 72 meshing with two loose bevel gears 73, 74, running loose on the master wheel drive shaft but adapted to be clutched thereto in the usual manner by a clutch 75. By shifting said clutch, said master wheel may be caused to either add or subtract, since when the clutch engages with one gear, it turns the master wheel in one direction, and when engaged with the other gear, it turns the master wheel in the opposite direction.

The power-driven carry-over assisting wheel 43 is driven from the same source of power as the master wheel shaft 67 by means of a drive shaft 76 having a clutch 77 which is adapted to be shifted simultaneously with the clutch 75, by means not shown, thus reversing said assisting wheel whenever the master wheel is reversed.

Bevel gears 78 driven by the shaft 76 mesh with a bevel gear-79 which, through gears 80 and 81, drives a shaft 82 to which said carry-over assisting wheel is fast. Said shaft. 82 turns in a fixed journal 83 in the plate 66, but is journaled in the usual resilient journals 84C adjacent the master Wheel, so that, if said assisting wheel fails to mesh properly with any carry-over wheel d8, its long shaft will permit it to spring clear of said wheel momentarily, and later in its turning it may mesh properly with said wheel.

The master wheel 6, as has been stated, is preferably located just about in the plane of the typewriter printing point, and the lug 57 against. whichvthe computing carriage is locked is located almost in a line wit-h said master wheel, being slightly offset therefrom, as seen in Fig. 8, to allow for the fact that the carry-over wheel of each computing wheel is oiiset somewhat therefrom. lit will also be seen in said Fig. 8 that the detent rolls are carried in central slots 85 in the detent bars e6.

The roller bearings 27 on which the computing machine is carried include rolls 86 which, as has been stated, are set at right angles to each other, cach roll having a pivot at each end, which' pivot passes through an ear 87 at each side, andis headed over said ear. Said ears are .made by bendintensa ing tongues projecting from a dat strip of metal at right angles to said metal, sovthat two tongues form a channel 88, as seen in Fig. 1, within -which the rolls 86 turn while the other pair of tongues are bent in the opposite direction forming a channel at right angles to the first channel 88. One pair of ears or tongues 87 is extended at 89 to form members which lie on each side of the bar 34, and said'extensions are riveted to said bar. A similar roller bearing, as has been stated above, is riveted to the other end of said bar.

The arm 17 by which the typewriter carriage carries along the computing machine carriage, is shown in plan View at Fig. 10, where it will be seen that the hinge 18 which carries it is adj ustably mounted on the typewriter carriage by screws 90, which pass through slot-s 91 of the plate 92 which forms the hinge, and the arm 17 is normally thrown forward against the rack 2O by means of a spring 93 coiled around the axle ot the hinge, and lying between the arms 94 which form part of the arms 17.

As is best seen in Figs. 7 and 11 the numeral wheels 8 occupy the very front of the totalizer, and behind these wheels lie the computing wheels, which are placed near the rearwall of the totalizer. lThis allows the totalizer to be kept from overhangng the keyboard of the typewriter enough to interfere with the convenient operation of the typewriter. This brings the; carry-over wheels at the rear or" the totalizer, and the detent arms 46 may be pivoted beneath and behind the dial wheels, whence they extend rearwardly and down to the lug 57. |The front wall 96 of the totalizer, as best seen in Fig. 7, slants backward rapidly from the dial wheels, thus, as will be seen from Fig. 2, still further reducing the tendency of the totalizer, to obscure the typewriter keyboard. By having the computing wheels at the very rear of the totalizer, the master wheel shatt is brought close to the front bar of the typewriter, in which place it is largely protected from injury by said bar,-and at the same time this enables the mechanism on the end plate 66 to be made very compact. The advantage of having the front of the totalizer slope downwardly and rearwardly is especially apparent when it is remembered that the operator always sits at some distance in front of the machine, and so sees the keyboard from quite an'angle. Since the flat bottom of the totalizer extends only a little farther forward than the numeral key' 1', it will be evident that the totalizer wil in no way intertere lwith a clear view of the numeral keys, which as usual occupy the top bank of the keyboard..

ln Fig. 11, it will be noted that the numerals read downwardly and that the dial Wheels have the gears by which they are driven at the right-hand sides, While the computing wheels have their gears at their right-hand sides `mesh with the corresponding dial Wheels. In the form of totalizer Lshown in Fig. 11,'comma` and decimal spaces are left, formed byva plurality ofv double washers 95, which embrace a rod or tube 96 on which the dial v wheels 8'are journaled and which also extend between the computing wheels 7 As has been stated, in said totalizer each computing wheel is constantly in mesh with a carry-over wheel and also constantly in mesh with a dial wheel. Each carry-Over wheel which carries over across the washers 95 is formed with a long barrel as usual in the i the carry-over wheels and the dial Wheels:

Underwood-Wright computing machines. The washers 95 are kept in. pla-ce by the rod 96 which passes through the Washers between the dial and computing wheels.

The computing wheels are supported by with which they mesh; said carry-over wheels being journaled on a fixed shaft 101..

Each computing .wheel is held in place to engage its dial and carry-over Wheel by a plateY 97,.which is -carried by rods 98, 98 at the top of the. totalizer, each a semicircle cut in it which forms a journal bearing for the shoulder 99 of its computing wheel; The dial wheels and computing Wheels are spaced from the Walls of the totalizer casing by suitable Washers 100.

It will be observed from Fig. 1, that the roller bearings of the totalizer carriage are Y. 1 so placed that the rolls support said carriage on each-side of the master wheel. 4

Variations may be resorted to Within the scope of the invention, and portions of the improvements may be used without others.

yHav' claimt 1 1. In a combined typewriting and comput- V ing machine,

g thus described my invention, I

the combination with a typewriter carriage, of.a computing machine car- ;riage traveling concomitantly therewith, a

totalizer on said computing carriage, a lug comprising V-shaped sides fast on the ofthe machine, a separately operable locking bar onsaid totalizer for each denomination in -which computing may be done in said Y V.,hine carriage,

riage in totalizer, said bars each having sides adapt-- edl lto t said lug closely, and means for moving said bars one at a time against said lug to firmly hold the computing machine carplace before the4 computing operation begins.

2, In a combined typewriting and coin- Y puting machine, thecombination withl a typewriter carriage and a computing maof a V-shaped locking`bar at every space on said computin machine carriage in which computing1 is li ely to be done, a lug comprising V-s plate 97 having' framey control of the numeral aped sides on frame on which said carriage travels, computing wheels, a master. wheel arranged to as.

engage said computing wheels serz'ctz'm determined by said traveling carriage, a detent for each computingl wheel, a bar forming an extension of eachdetent, a coperatiiig locking member common to said detents, and means for swinging the detent adjacent the master Wheel to carry it clear of its computing wheel and carry its bar into locking engagement with said locking member to lock the carriage.

keys and computing wheels, of a computing machine carriage in which said. computing Wheels are mounted, a detent. for each comnormally holding it, an extenf puting wheel sion of each detent forming a locking member, a coperating locking member common to said detents and fast on the frame of the combined machine, a master wheel for i.'ota t l iiig said computingwheels serz'atz'm to an extent determined -by the numeral keysde-y underthe control of said f .numeral keys for operating said detents/ to pressed, and means carry them' clear of their computing wheels and carry them to locking position before said master wheel turns the computing wheel with which it engages.

5. In a combined typewritingand computl 105 ing machine, the combination with numeral keys and computing wheels, of a computing machine carriage puting wheel normally holding it, an entension of each detent forming a locking member, a coperating locking member fast on the frame of the' combined machine, a masa5 4. In a combined typewriting and comput-l ing machine, the combinationwith numeral` in which said computing wheels are mounted, a detent for each comlll) ter wheel for rotating said. computing Wheels serzatz'm to an the numeral keys depressed, a plunger on the frame of the machine adjacent said coperand meansunder the keys for causing saidv .y

ating locking member,

plunger to move a detent into locking position before the master wheel turns the computinIg wheel with which it engages.l

extent determined f a combined typewriting and comput-v ing machine, the combination with numeral keys and computing wheels, of a computing machine carriage in which. said computing wheels are mounted, a detent-'for each computing wheel normally holding it, an extension of each detent forming a locking member, a c ooperating locking member fast onr theframe o the combined machine, amaster .wheel-.for rotating said computing Wheelsseriatim toan extent determinedy bythe lI lnmeral keys depressed, a control bar, meansoperated bysaid 'control bar for causing a'A detentextem sion to lock the computing; machineicanriage, and a trip' shaft ander thecontrolof said control bar for later causingthe-coi'nputing mechanism to carryinto the .computing wheels the` umher represented ibylthe keys struck. M Il., l

7. In a combinedxftypewriting and com-y puting machine, the combination ,With-nuf meral keys .and 4computlng Wheels, ofma computing machine carriage, in which :saidl computing Wheels are mounted, aA datent-for each computing Wheelvl normally, holding it; l an extension of each detentforminga locking member, acooperatijng locking niemioer- 1' fast on the frame oft-he combined .inach1ne,. f

a master Wheel for rotatingfsaid.;computing- Wheels sem'atz'm to lan (extent,determinedby;l the numeral keys ,dep-resse@ `a controlbar, 1 means under the controlof,,saidnbarior carrying a detent extensiongntolocking en.; 'gagement with said ,coperating locking l; member, a spring normally .tendingto torce..i said locking member Yinto, placesaidf spring strong enough `to. overcome, any other driv-z ing means for the lcomputing gmachine`= can'A riage,means for operating[said-control bar by the numeral keys, and meanswhereby.the-i.l control bar later causes the ,turning-.cfr the master wheel. l 4 8. In a combined.typevvriting1` andrcomf; puting machine, the''combination`vvithgnu7 i meral keys, ofa trayelin'g,carriageg-)means for driving said traveling, carriage, afspring: f operated locking member,more` ,powerful than said drivingv means fior, lockingnsaid carriage against travelingand means made" eiiective by the operationofrleach.numeral f key for moving said. locking. ymember vto effective positionbefore the computing mawA chine is operated by the lnumeral keyw v., -1

9. In a combined .typewritingandwcomputing machine, 'the combination '.With' aj traveling carriage and means fordrivingit,'y of numeral keysror lc leteri'nining .hows` the Wheels forming part voit' said computing ma.-I

, chine shall turn, a combinedlocking and alining member yfor bringing,thelcarriagelto# proper position andlocking it before'anyy 1 computing Wheelis so turned, and` power operated means for operating said ilockmore f' powerful than the means ordriv-ng-Sajd carriage.

10. In a combined typewriting and Icomputing machine, the combination With numeral` keys, a master Wheel and a traveling carriage, of computing Wheels forming part of said traveling carriage, a detent for each computing Wheel. a locking eXtenSion on 'puting machine,

yeach detent, a copera't'ing lock-on the lframe movingthe of' the machine,.and inean's for detent of `the computing wheel which thee 1; ;-ast er' wheel engages, so that xtheilocking extension engages `with thexcooperating lock. 11. In-facoinbine'd typewrltlng and com'- trave ter f Wheel to' turn fixed journal at a distance from-sind resilient -journals,

said master lWheel, a. i -v r .80 i andfa resilient'shaft for said carry,

overrollfjournaled in said ixed journaland f said resilientj'ournals.

tion-vvith "computing` Wheels, numeral keys 12. A'In a computing m'achine,` the 1 ,4

85. "and-a'traveling carriage,'of'l an escapement'. f L

device orffeeding'said c"arriagealong,.comfL putingfvvheels in saidlcarriagaa detent for.. 1';

each the-ram'eof the nia `3hine,l means associated Witheachdetent coperating'with saidlockl computing Wheel, locking member Ion 1. i

ing member toi lock said carriage, and. a

plunger "adapted to freeifthe l. ,computingv Wheel 'from its'jdete'nt'an'd to lock-saidarr 9,5' 1 'i l i I riage by 'said 'locking lmember Whenever .a

numeral `key Ais operated'. 'A

n 1s. In sfcmbinea t gpewraiiig; and' etniputing machine, the combination vwith a.let ter-feeding typewriter carriage and a computing machine carriage, of vcomputing Wheelsforming 'part of said'comj'outing ma-I Ichine carriage, 'a'mister IWheel adapted to,

detentfor eachcomp'uting 1vgfheel, comprising turnQsaid'complltngWheels ,sjcrz'tim as, de .1. termmed 'by saidlettenfeeding carriage-a a swinging'bar, "a locking-mlmber,on'thein frame ofi-he machine, lanezfitension'or': eaclrf y detent bar adapted toicopey'rate. with said` locking member, and means ,forming pa'rt `of 1 saldlocking member positively moving '14; Ir'a computing machine, the Combination Withdial Wheels andcarryflover :Wheels-vai of detentsleife'ctiife Oli SaidV diaLWheels Ybut operating through "the';carry- Qver wheels, an

l-'exterision' of each dete\nta computing .-.cara

1101` the computing machine carriage4 bythe enlgaging detentbar to ralinezfits computing. Wheell with the mastery ,vvheel. if ,the letter-v n. 1 feeding carriage has incorrectlyy arrested it.

travel, and a lug coperatin with said extensions to make said lock e ective. 16. vInv a computing machine, the lComriage and a transverse front bar some disl brace said front bar, a

tance in front of theprinting point, of a computing carriage slidable along said front bar, a main bar form-ing part of saidy com puting carriage and channeled to partly embrace said front bar, a totalizer adapted to be attached to said main bar, and a coperating tongue and groove for alining said.

totalizer on said main bar.

18. The combination with a front-strike typewriting machine having a traveling carriage and a transverse front bar some distance in front of the printing point, of a computing carriage slidable along said front bar, a main bar forming part of said computing carriage and channeled to partly em- :brace said front bar, a totalizer adapted to be att-ached to said main bar, a groove in said main bar, a tongue fast on said totalizer and adapted to coperate with said groove lto aline said totalizer, and means effective in said groove for attaching said totalizer fn place in said groove.

19. The combination with a front-strike typewriting machine having a traveling carriage and a transverse front bar some distance in front of the printing point, of a computing carriage slidable along said front bar, a main bar forming part of said comput-ing carriage and channeled to partly emtotalizer adapted to be attached to said main bar, roller bearings forming the sole support of the computing carriage interposed between said main bar and said front bar, a master wheel for operating said totalizer, and means independent of said bars for steadying said totalizer while it is being operated.

20. In a combined typewriting and computing machine, the combination with a typewriter carriage, and a computing machine carriage having a considerable range of movement and comprising computing wheels, of a master wheel internal to said computing wheels, said master wheel and computing wheels having a relative 'lateral movement, and a long resilient shaft carrying said master wheel, said'shaft journaled, during the limit of movement of said computing-carriage, at one end only of the niachine, and having a bevel surface thereon adapted to guide said shaft into engagement with the computing wheels during said lateral movement.

21. In a computing machine, the combination with a traveling carriage, of comput ing wheels, actuating means for engaging said wheels seriatz'm under the control of said carriage, detents for said wheels normallyrestraining their too free operation, means for moving said detents one at a time from engagement with said wheels as the wheels are operated sem'at-f/n, and means enabling said detents,on moving from a position to release said wheels, to lock said carriage.

22. In a combined typewriting and computing machine, typewriter carriage, and a computing machine carriage having a considerable range of movement and comprising dial wheels, of a master wheel having relativev movement with respect to said dial wheels, external teeth on said master wheel, wheels adapted to turn said dial wheels comprising internal teeth, a long resilient shaft on which said master wheel is-fast, and a journal for said master-wheel shaft at one end only, said j ournal. permitting said shaft to swing to fit said internal teeth, and said shatt having a bevel thereon for causing it to swing to fit said internal teeth.

23. In a combined typewriting and computing machine, the combination with a typewriter carriage, and a computing machine carriage having a considerable range of movement and comprising dial wheels, of a master wheel having relative movement dial wheels, external to turn said dial wheels comprising internal teeth, a long resilient shaft on which said master wheel is fast, a journal for said master-wheel shaft at one end only, said journal permitting said shaft to swing to lit said internal teeth, said shaft having a bevel thereon for causing it to swing to fit said internal teeth, and detents holding said dial wheels alined, so that said master-wheel teeth will always mesh with said internal teeth.

24. In a combined typewriting and computing machine, the combination with a traveling carriage, of a keyboard for said typewriting machine, A and a totalizer mounted on said carriage forward of the printing point, said totalizer having a casing provided with a dat top, so as to afford an unobstructed view of the printing point of the typewriter, and an inwardly slanting front wall, so as not to interfere with the gpertors hands in manipulating thelkeyoar 25. In a combined and computing machine, the combination with a traveling carriagefof: a: keyboard forl the4 typewrlting machine, -a 4totalizermounted on f said carriage forwardoffthezprinting point,

dial wheels -on saidltoltalizer arranged fat the upper front portion`thereof,.driv1ng'ar1d carry-over wheelsy behind. said dial Wheels,

and a casing for said `totaliz'er'having'aiiat top' and a rearwardlyfslant'ing 'front face,

whereby said totalizer enables a clear View` of the! printing point of the typewriting machine, and the ready manipulation ofthe keyboard thereof. y

26, In a computing machine, the Combination with a travelingearriaggof atotalizer on said carriage, a rmasterlwheel forsaid totalizer, a long, resilient shaft ,carrying Said master wheel, anda journal for: said shaft at one end only,.to` permitl it to swingfto 'adapt itself to. said totalizenr 27. In a computingmachine, the combinaf copies of this patent `maybe obtained for lpvoypaf computing, wheels,

therefor, a carry-over assisting roll for said fixedbearingl at the end remote from Isaid assisting roll, and a resilient journal for said shaft having asaid roll holding itv adjacent the computing Wheels on which it is effective.

` v28. The combination with a totalizer and vr'a master Wheel traveling relatively thereto, kofa drive shaftfor said master Wheel of a length at least equal to the distance of rela-- I-tive travel between said totalizer and master Wheel, andr means for supporting said shaft at one end only, the master Wheel be,- ing carried by the unsupported end.

`Witnessesz J. E. LUCAS, s `l J. E. DAVIDSON.

ve cents each, by addressing the Commissioner of Patents, Washington, 3.o. f

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