US2359809A - Calculating attachment for type - Google Patents

Description

Oct. 10, 1944. F. J. TILLMAN CALCULATING ATTACHMENT FOR TYPEWRITERS AND THE LIKE Original Filed Aug. 27 1935 4 Sheets-Sheet l oct. 10, l1944.

F. J. TILLMAN GALCULATING 'ATTACHMENT FOR TYPEWRITERS AND THE LIKE original 'Filed Aug. 27, 1935 4 Sheets-Sheet 2 Rmx im. .www Mk.

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OC. 10, 1944. F J. TlLLMAN 2,359,809

CALCULATING ATTACHMENT FOR TYPEWRITERS AND THE LIKE Original Filed Aug. 27, 1935 4 Sheets-Sheet 3 4 Och 10Q 1944- F. Jf'rlLLMAN l 2,359,809

CALCULATING ATTACHMENT FOR TYPEWRITERS AND THE LIKE Original Filed 'Aug 27, 1935(V 4 Sheets-Sheet 4 Mns. Gea. L DOE, 50 VINE LAND, VINE LAND, lD\

` Roz AND COMPANY D f 6' .if I cA| c\.-.-,' Ar.. E' jr J ooammcz am neme nsscmP'rwN DEBIT ,ClED'T nii'cs 18.60 6-9 34 i DRESS 10.40

12 i Hm- 2.90 i7 1 PAIR Suoes 4.50 36.40

36.40 641 12 BY REU-'0.4i HRT 2.90

BY CASH 8.60 i4' 90 NT-WWW Raffa/a" Kika/mii.

Patented Oct. 10, 1944 CALCULATING ATTACHMENT FOR TYPE- WRITERS AND- THE LIKE Ferdinand J. Tillman, St. Louis, Mo.

Substituted for abandoned application Serial No.

38,030, August 27, 1935. This application December 4, 1941, Serial No. 421,640

Claims.

This application is a substitute for that led by me August 27, 1935, Serial No. 38,030 for the invention relating to certain new and useful improvements in calculating attachments for typewriters wherein the attachments comprise a combination of relatable and cooperable elements which are mounted and retained in a base structure on which a standard typewriter may be mounted or disposed, and there being upwardly extending attaching elements adapted for cooperation with the numeral keys and/or type bars of the typewriter whereby the calculating results of the calculating attachment may be imprinted or transcribed 'by the type bars of the typewriter.

An object of the invention lis in utilizing the typewriter carriage moving tape for causing certain operating parts of the calculating attachments, to be moved into cooperating positions with other parts of the attachments.

Another object of the invention is in providing the calculating attachment with calculating keys that are independent of the numeral keys of the typewriter, and the provision of means whereby to protect and guard against .the operation of the typewriter numeral keys during calculation being carried on by the attachment and/or the calculating keys of the attachment.

Still another object of the invention is in providing the calculating `attachment with a pair of independently ,and separably operable accumulators whereby one of the 4accumulators may be utilized for adding while the other accumulator may be utilized Vfor subtracting.

A still further object of the invention is in providing the calculating attachment with a plurality of master wheels and respective relatable accumulators with means whereby one of the accumulators can be held from operating engagement with a respective master wheel.

Another still further object is in providing the master wheel carriage with a part that is traveled therewith to serve as a cooperating element with parts in the accumulators, to prevent overriding travel by friction from an operating accounting gear, to adjacent inoperative accounting gears.

It is also an object of the invention to provide a calculating attachment of an improved assembly of cooperating devices which are motor driven after release of tripping mechanisms is provided by actuation of respective accounting keys.

Still another object of the invention is in providing an improved locking mechanism which is made cooperable with the key tripping mechanisms for preventing effective actuation of a cal- (Cl. 23S-130) culating key, when the electric switch for current control of the motor is operated to break the motor current circuit.

A further object of 4the invention is in providing an improved arrangement of a pair of accumulators which can be disposed in such cooperable relation with the transmitting calculating mechanisms for acquiring totals of both debits and credits in respect to a days billing, wherein one accumulator will totalize debits and the other, the credits.

A still further object is in providing an improved combination of mechanisms which are made cooperable with the typewriter whereby full and complete auditing and billing of accounts showing a correct summation of both debits and credits, can be accomplished and entered on individual billing sheets on a single introduction or insertion of respective sheets, in the typewriter carriage.

Other objects and advantages Will appear as this description progresses and by reference to the accompanying drawings, in which:

Figure 1 is a vertical longitudinal sectional view taken through this improved calculating attachment, approximately on the line I-I of Fig. 2, and the view showing in dotted lines, a surmounted typewriter thereon in attached operating relation with the calculating attachment.

Figure 2 is a horizontal view partly in section, taken approximately on the line II-II of Fig. 1.

Figure 3 is a vertical transverse sectional view taken approximately on the line III- Ill of Fig. 1.

Figure 4 is a side elevation partly in section, of certain of the mechanisms shown in Fig. 1, showing them in shifted positions and pertaining to the reciprocable rack bars for operating the counting gears of the transmission accounting shaft.

Figure 5 is a fragmentary plan view partly in section, of a portion of the typewriter carriage moving tape showing certain positions of operating studs which are carried by the tape, and relatable mechanisms with which the ,studs are cooperable for actuating certain mechanisms of this improved calculating attachment.

Figure 6 is a Vertical section taken approximately on the line VI-Vl of Fig. 5. y

Figure 7 is a view similar -to Fig. 6, illustrating the operating parts in different positions than that in which they are shown in 6.

Figure 8 is an enlarged vertical transverse section taken approximately on the line VIII-VII-I of Fie. 6.

Figure 9 is a fragmentary plan view partly in section, showing the shifted positions of the operating mechanisms for holding one of the accumulators in a position for cooperation with a master wheel gear of the master wheel carriage.

Figure l is an enlarged transverse section taken through one of the accmnulators, showing its relation with a master wheel gear of the master wheel carriage, illustrating a locking means provided by the carriage and the accumulator for preventing over-riding motion being carried to inoperative accounting gears.

Figure 1l is an enlarged fragmentary plan view of Fig. 10.

Figure 12 is a vertical longitudinal sectional view taken approximately on the line XII-XII of Fig. 10.

Figure 13 is an enlarged fragmentary section showing the application and securing of an operating stud to the carriage tape.

Figure 14 is a vertical fragmentary section taken approximately on the line XIV-XIV of Fig. 4.

Figure 15 is a vertical longitudinal section taken through a modified form of seating plate for the typewriter carriage moving tape.

Figure 16 is a vertical transverse section taken approximately on the line XVI-XVI of Fig. 15.

Figure 17 illustrates a billing sheet having an intermediate part broken away, showing examples of the character of work which may be accomplished by the combining of this improved attachment with a typewriter.

Referring to the drawings by numerals signifying different parts of the structure disclosed, I6 designates a base plate which may be provided with cushion supports I1, and mounted on said base plate I6 on its front and side marginal edges, is a vertically walled housing I8.

Fixedly secured on the base plate I6 is a transversely disposed frame I9, and supported in end bearings 29, one of which is extended from respectvie end walls 2l of the frame I6, is a horizontally and transversely disposed transmission shaft 22, and securely fixed to said shaft in spaced relation, is a plurality of pinion gears 23.

The plurality of gears above referred to, comprises ten pinion gears, and for cooperation with each gear is a respective rack bar 24, said rack bars being disposed on a horizontal plane beneath f the transmission shaft 22 and adjacent respective gears 23, said rack bars at one end being slidably supported in the side wall 25 of the frame I9 and being supported at their other ends in the side wall 26 o-f said frame.

Pivotally secured at 21 to respective rack bars 24 is one end of a toothed rack 28, the teeth of said racks differing in number and the racks being disposed in alinement within the frame I9, and the pivots 21 thereof being located adjacent the wall 26 of the frame I9, when the toothed racks are in the positions shown in Figs. l and 2.

Each toothed rack 28 at its opposite end is provided with a laterally extending pin 29 for both over and under engagement with a horizontal ange 36 of respective trip levers 3l during reciprocation of the rack bars 24 and respective toothed racks 28 carried thereby as the teeth of respective racks mesh with respective gears 23 of the shaft 22 for intermittently rotating said shaft different distances as the rack bars 24 are moved in one direction, during the computing and calculating operations.

The trip levers 3l of which there are ten (one relating to each toothed rack 28) are swingably mounted on a horizontally disposed rod 32 which extends lengthwise of the frame I9 and is supported in end bearings 33, each lever being actuated in one direction by a spring 34, said springs being secured at one end to an arm 35 extending from each lever and at their other ends to the side wall 25 of the frame I9. Each rack bar 24 is provided with an upstanding stop tooth 36 for cooperation with respective pinion gears 23, when respective rack bars 24 are operated in one direction.

Each of the rack bars 24 extend beyond the side wall 25 of the frame I9, and secured to each extending end of said rack bars by a respective pin 31, is one end of a connecting rod 38, the opposite ends of each rod being connected at 39 to respective drive Wheels 46. Each drive wheel 49 is turnably mounted on a respective fixed short shaft or screw 4l, each screw being extended from a support 42, said support being secured to and extended from a frame 43 which is secured to and is disposed transversely across the base plate I6.

For cooperation with the periphery 44 of each drive Wheel 49, is a roller 45, said rollers being securely fixed to a transversely disposed shaft 46 and are made of a friction material, o-r the periphery of the rollers may be of friction material for dependable gripping engagement with respective peripheries 44 of the drive wheels 40. The ends of the roller shaft 46 are turnably supported in respective end bearings 41 which are each extended from a supporting end frame 48, said end frames 48 being secured to and extended upwardly from the base plate I6.

While individual rollers are shown for cooperation with the peripheries of respective drive Wheels 49, if desired, a single roller may be mounted on the shaft 46, for cooperation with said drive wheels 40.

Securely fixed to the shaft 46, is a grooved pulley 49, and engaged in the groove of said pulley is an endless driving belt 59 which is engaged over a grooved drive pulley 5I of a motor shaft 52 of an electric motor 53, said motor being xed to the base plate I6.

Disposed on a plane above the shaft 46 and xedly secured in end bearings 54 which are extended from the end walls 48, is a shaft 55, and swingably mounted on said shaft in spaced relation, are a plurality of trip levers 56 having oppositely extending arms 51 and 58.

The operating end 59 of each trip lever is pivotally connected at 66 to one end of respective pull rods 6I, said pull rods extending longitudinally of the base plate I6 and being pivotally secured at their opposite ends at 62 to respective calculating key levers 63, said key levers 63 being pivotally mounted on a transversely disposed shaft 64 which is fixed at its ends in respective bearings 65, said bearing 65 being extended from a respective end wall 66, said end walls being secured to and extended upwardly from the base plate I6 near the front end of said base plate.

A transverse bar 61 which is secured at its ends to the end frames 48, is disposed rearwardly of the operating ends of the trip levers 56, and connected to each operating end 59 of respective trip levers, is a coil spring 68, said springs at their opposite ends being secured to the bar 61. The coil springs 68 serve to return the trip levers 56, the pull rods 6I and the calculating key levers 63, to their neutral positions, after said parts have been operated by actuation of the key levers of which there are ten, and being numbered from D to 9, and each trip lever 56 being cooperably related with a respective drive wheel 40 for ,permitting and preventing actuation of respective wheels 46 with respective friction rollers 45 of the roller shaft 46.

With further regard to the trip levers 56, the arm 51 of each is provided with a pair of right angular projections 69 and 16, as shown in Figs. 1, `2 and 4, said projections of each lever being spaced from each other and the projection 69 being on a, plane lower than the projection 10, the purpose of said projections being for cooperation with a laterally projecting stop pin 1| on respective drive wheels 46, the projection 69 of respective levers 56 being normally in the path of travel of and in abutment with, a pin 1| of respective drive wheels 4D for retaining and holding the drive wheels against operating movement.

The projection of each trip lever is normally held away from the path of travel of the pins 1| of respective drive wheels 46, by reason of said projections 16 being on a plane above respective projections 69. However, when respective calculating key levers 63 are operated and a relatable trip lever 56 is rocked or swung on the shaft 55, the projection 69 of the relatable trip lever 56 will be lowered to a plane beneath the pin 1|, and simultaneously the projection 16 will be'lowered to the position in the circular path in which the pin 1| will travel, when the relatable drive wheel is rotated (Fig. 4), and Will be engaged thereby, thus preventing the drive wheel 46 being further rotated in the event the relatable actuated trip lever 56 has not been returned to its neutral position by release of the relatable calculating key 63 by the operator. However, upon return of the actuated trip lever 56 to its neutral position, the projection 16 thereof will be swung upwardly from the pin 1| and the projection 69 will be simultaneously moved upward to receive and hold said pin 1|.

With further regard to the actuation of the trip levers 56 by operation of the calculating key levers 63 and their relatable pull rods 6|, dis-engagement of a projection 69 from the retaining pin 1| of a relatable drive wheel 40, will permit the cam surface 12 of one of ten spring actuated cam levers 13, to become active on the projecting pin 14, which is disposed diametrically from the pin 1|, but is on the opposite side of the drive wheel and on respective drive wheels.

The cam levers 13 are disposed in proximity to respective drive wheels 40, said cam levers being swingably mounted in spaced relation on a transversely disposed shaft 15, and are adapted to be actuated by respective coil springs 16 for causing the cam surface 12 of each lever to thrustingly bear against respective projecting pins 14 of respective drive wheels 46. A transverse bar 11 is disposed so as to cooperate with the spring attached ends 18 of the cam levers 13 for limiting the spring actuated movement of each cam lever.

Each drive wheel 46 on its periphery 44 is provided with a cut-away part or dished recess 19, the recesses of said drive wheels being normally disposed in alinement with each other, and the rollers 45 on the shaft 46, this alined position of the recesses 19 with respect to the rollers 45, providing for said rollers to operate free of respective peripheries 44 of the drive wheels 46.

When, however, the stop pin 1| of a respective drive wheel 46 is released by the projection 69 of a respective operated trip lever 56, the spring tensioned activity of the cam surface 12 of a cooperating cam lever 13, on the projecting pin 14,

will cause the related drive wheel 46 to be turned suiciently wherein a corner or end v86 of a peripheral recess 19, will be forced into engagement with a relatable rotating friction roller 45, and the friction roller upon engaging the periphery 44 of the released drive wheel 46, will cause the said drive wheel to be turned one revolution and to a position wherein the stop pin 1| will, upon completion of its cycle of travel, engage against the projection 69 of the trip lever -56 which has been returned to its neutral position by 'release of the actuated calculating key 63 and the tension activity of the relatable coil spring 68.

Obviously, upon actuating the trip levers 56 by operation of respective Vcalculating key levers 63, relatable drive wheels 46 will be permitted rotation, and consequently relatable connecting rods 38 will be reciprocated thereby, by reason of their connection at 39 to respective drive wheels. Actuation of the connecting rods 38 will reciprocate respective bell crank levers 6|, of which there are ten, and which are connected by their bifurcated ends 82 to respective pins 31 of the rack bars 24, and to which said connecting rods 38 are connected.

The bell crank levers are swingably mounted in spaced relation on a transversely disposed shalt 83 which is secured at its ends in bearings 64, extended from respective end frames 46, and pivotally connected at 85 to the upper arm 85 of respective bell crank levers 8|, is an upwardly extending leg 81 having a hook 38 at its upper end.

The legs 81 serve to connect the bell crank levers 8| to respective typewriter numeral keys and/or levers 89 of a typewriter A, which is mounted and supported on the housing I8 oy the cushion supports 96 thereof, being engaged in respective sockets 9| of the housing I8.

Connection of the legs 81 of the vbell crank levers 8| is made by each hook 88 of said levers over-engaging a pin 92 which is laterally'extended from an extension 93 of respective yclamping brackets 94, one of which is secured to the vertical extension 95 of respective key levers 89.

Each clamping bracket 94 is channel-shaped in transverse section and is provided with a clamping screw 96 having a mutilated head for providing detachable connection to respective key levers. The upwardly extending end 91 of each key lever 89, is connected in the usual manner to one end of respective type carrying bars 68 of the typewriter A for cooperation therewith, to cause respective type bars to be actuated in cooperation with the ribbon 99 of the platen roller |66 of the typewriter carriage |0 Fixedly secured to the transmission shaft 22 adjacent each end, is a transmission gear |62, each being in mesh with a respective intermediate gear |03, each gear |63 being extended and supported from a respective end wall 66, and in mesh with each gear |63 is a pinion |64, each pinion |64 also being extended and supported from respective end walls 66.

From the above description in respect to the gears |62, |63 and |64 and from the disclosure of Figs. 2 and 3 of the drawings, it is to be noted that a set of said gears is consequently located adjacent each side of the structure so that the operating calculating actuations from the transmission shaft 22, will be simultaneously transferred and carried through each set of gears |62, |63 and |64. This is for the purpose of imparting rotary motion to a take-off gear |65 from one of, the train of gears, and for imparting rotary motion to a take-off gear |06 from the other gear train on the opposite side, the take-olf gear |05 having a grooved collar |01 securely fixed thereto, and the gear being slidably mounted on a flat-sided shaft |08 which is turnably mounted at one end in a bearing |09 which is extended from one of the end Walls 66, and the other end of said shaft |08 being turnably supported in a bearing which is extended upwardly and supported from the base plate I6, intermediate of its width.

The take-off gear |06 is mounted on a flatsided shaft which is turnably supported at one end in the intermediate bearing ||0 and at its other end in a bearing I2, which is supported and extended from the other end wall 66 in opposite disposition to the bearing |09 in which one end of the flat-sided shaft is engaged. The take-01T gear |06 is provided with a xed or integral grooved collar H3, and engaged in the groove of said collar is a vertically extending rlger |4 of a bell crank shifting lever I l5, which is horizontally disposed and pivotally secured at ||6 on the base plate I6. Connected to the bell crank lever is one end of a shift rod ||1 which extends rearwardly of the structure above the base plate I6 and is operatively connected at its opposite end to a shifting lever ||8 which is actuated by means hereinafter described in connection with the carriage traveling tape H9, for shifting the gear |06 into mesh with either of its relatable gears |63 and |04.

For shifting the gear into mesh with either of its relatable gears |03 and |04 and to an inoperative position, a hand-operated lever is provided, said lever being securely fixed at one end to a longitudinally disposed horizontal shaft |2| which is mounted in bearings |22 which are supported from the underside of the base plate I6, and extending upwardly from said shaft through a slot in the base plate, is an arm |23 having an extending finger |24 at its upper end which is engaged within the groove on the underside of the collar |01 of the gear |05.

Slidably mounted onv the alining nat-sided shafts |08 and are respective master wheels or gears |25 and |26, each having a grooved hub, and for securing said master wheels in fixed spaced relation, end members |21 of a carriage |28, are provided, the end members being engaged in the grooves of the hubs of said master gears. Extending forwardly from each end member |21, is a pointer |29 for pointing indication with the counting wheels |30 of respective accumulators |3| and |32.

The carriage |28 hereafter called the master gear carriage, in addition to being supported on the hubs of the master gears |25 and |26, is slidably supported on a transverse rod |33 which is supported at its ends at |34 in respective end walls 66, said rods being passed through the standard of the intermediate bearing ||0 which supports the adjacent alined ends of the flat-sided shafts |08 and and is also passed through the end members |21 of the master gear carriage |28.

The master gear carriage |28 is provided with a row of depending teeth |35 which are disposed longitudinally of the carriage, said teeth being in mesh with a segmental gear |36 which is keyed or fixed to one end of a shaft |31 which is disposed longitudinally beneath the base plate I6, and is supported in end bearings |38.

Extending forwardly from each end member |21 of the master gear carriage |28, is an arm |39, said arms having fixed thereto and supporting a relatively long locking bar |40 which is horizontally disposed and parallels the fiat-sided shafts |08 and and extends beneath and at all times is engaged by a plurality of locking levers |4| of respective accumulators |3| and |32 (Figs. 1, 2, 3, l0, l1 and 12).

With respect to the locking levers 4| of the accumulators |32 and |32 and the locking bar |40 of the master gear carriage |28, each accumulator is provided with a plurality of gears |42 which are loosely mounted on a shaft |43, said gears |42 projecting into the path of travel of the teeth of respective master gears |25 and |26, when the master gear carriage is moved in travel by operation of the segmental gear |36 with the teeth |35 thereof. Each gear |42 is constantly in mesh with the gear |44 of respective counting wheels |30 which bear characters 0 to 9 on their peripheries, and in addition, each counting wheel |30 is provided with a cam |45 having a recess |46 in its periphery, and offset from the recess is a tooth |41.

Each counting wheel |30 excepting the highest order counting gear has axially xed thereto a respective gear |44, cam |45 and tooth |41, the gear |44 being on one side and the cam |45 being on the other side of the counting wheel |30 with the tooth 41 adjacent and offset from the recess |46` of the cam, as shown more clearly in Figs. l1 and 12. All of the counting wheels |30 are loosely mounted on a shaft |48 paralleling the shaft |43 on which the gears |42 are mounted, with their respective cams |45 in turning clearance with a gear |44 of a higher order counting wheel |30.

Supported in the end walls |49 of each accumulator is a shaft |50, and swingably mounted on said shaft in spaced relation are the locking levers |4|, there being a locking lever as relating to each set of meshing gears |42 and |44, and turnably supported on a journal |5| which is projected from each locking lever, is a gear |52, each being under-disposed and constantlyin mesh with a respective counting wheel gear |44, each gear |52 in a sense being a double gear by reason of an aiiixed smaller toothed gear |53 being disposed on one of the sides thereof and concentric therewith and with its teeth in staggered relation, each gear 53 having relation with the single tooth |41 of respective counting wheels |30.

As shown more clearly in Figs. 11 and 12, the gears |52 have a wider face than the gears |44 with which they are in mesh, so as to overspan the width of respective teeth |44 and the periphery of the adjacent cam |45 of a relatable counting wheel |30 of a lower order. With this limited construction and due to the locking levers |4| being tensioned by respective coil spring |54, the gear |52 of respective locking levers will be held in mesh with its relatable gear |44, and simultaneously with this meshing engagement of the teeth, an adjacent pair of the teeth of the gear |52 will be forced to dwell against the periphery of a relatable cam |45 (Fig. 10), and the gear |52 will thus be held in a locked position against turning by the relatable cam |45, and consequently all of the gears |52 in this locked position, will prevent accumulating rotation of the meshing sets of gears |42-|44.

As the locking bar |40 of the master gear carriage |28 is of a length to constantly underengage the extending ends of the plurality of locking levers |4|` of both accumulators |3| and |32, said locking bar |40 will prevent inadvertent retrograde movement of the locking levers |4I, such as may be caused by friction from the turning of an operating counting wheel |301 by actuation of a master gear in cooperation with a gear |42 of a relatable counting wheel, |30. The locking bar |40 therefore is. for the purpose of preventing any actuating movement; being carried to the counting wheels |30 of the accumulators, excepting a selected counting wheel oi each accumulator.

For permitting actuation of the selected counting wheel of each accumulator, a recess |55 with respect to the accumulator |3| and master gear |25 thereof, is formed on the top of the locking bar |40, as shown in Figs. 2 and 3, tothe left and adjacent the master gear |25., as seen in Fig. 3, and a similarly located recess |56V is shown in proximity to the master gear |26. The locking bar |40 therefore, which formsV a part of the carriage |28, when shifted so that the master gears |25|26 are moved to selected operating positions in respective accumulatore, will provide for locating each recess |55-| 56l to positions beneath respective locking levers |4| of the selected counting gears |30 with which they are related. and assaid respective counting wheelsare rotated by relatable master gears in. mesh with relatable gears |42 and said gears being in mesh with relatable gearsY |44 of the selected counting wheels |36, the locking pair of adjacent teeth of relatable gears |52y will be released from locking engagement with relatable cams |45, by turning actuation of the teeth of relatable gears |44, by reason of the fact that the relatable locking levers |41 on which the gears |52 are mounted, will be permitted retrograde action by the extending ends of said levers being forced into respective recesses |55-|56.

Immediately upon discontinuance of turning actuation on the selected counting wheels |30, the locking lever |-i| of each accumulator which was actuated, will be returned to its` neutral position by its attached spring |54 and an adjacent pair of teeth of the gea-r |52 of each locking lever, will be brought into locking engagement; with the periphery of the relatable cam |45. During the revolving oi the selected counting wheels |30, all of the remaining counting wheels of both accumulators` were prevented from being inadvertently turned by reason of their relatable locking levers |4| being prevented trom` retrograde movement on account of. the extending ends of said levers being engaged on the top of the locking bars |46, and consequently, overriding motion was prevented from being imparted to unselected counting wheels |35, excepting those which were selected to be operated on.

Provision, however, is made for actuating the counting wheel |30 which is next in higher order in totalizing, to the selected counting wheel being actuated, while the locking levers 4| are held in locked relation.

The actuating of an adjacent locked counting wheel |30 is accomplished by cooperation of the tooth |41 ofthe selected. counting wheel with the gear |53 aiiixed to the gear |52 of the lever |4| of the said adjacent locked counting wheel. In this connection, the tooth |41 upon being brought into meshing relation with the gear |53 by operation of the selected counting wheel |30, will cause the locked adjacent counting wheel to be turned a pre-determined distance of one-tenth of a revolution, to position the next designating number or digit on the periphery of the locked counting wheel, at the sight opening |51 in the housing |8,

and simultaneously, a tooth of a relatable gear |52 will engage the recess |46 of the cam |45 oi the locked counting wheel |30, thus momentarily breaking the locked relation of said gear |52 with its cam |45.

The accumulator |32 is stationarily fixed to the base plate I6 with its plurality of gears |42 disposed in traveling alinement with the master gear |26 of thecarriage |28. The accumulator |3| which is disposed to the left of the accumulator |32, is mounted in trackways |58 which are iixed to the base plate I6, said accumulator |3| being normally held by a coil spring |59 in a position against a stop 233 wherein the alined gears |42 thereof are held from the alining travel of the teeth of the master wheel |26 of the carriage Means are provided however, for automatically moving the accumulator |3| in its trackways |58 to a position wherein the gears |42 thereof will be in alinement with the travel of the teeth of the master gear |26, said means comprising a pull rod |60 which is connected to the cross bar |6| to which one end of theV coil spring |59 is connected (Figs. 1, 2 andV 12), the other end of said rod extending longitudinally above the base plate |6 and being secured at |62 to the arm |63 of a bell crank lever |64 which is horizontally swingable on the pin which is extended from 'a plate |66 secured on the base plate |6.

A trip lever |61 is pivotally secured at |68 to the bell crank lever |64, saidV trip lever |61 having an end |69 extending beneath the carriage moving tape I9 and is adapted to be engaged by a stud |10 which is secured to and depended from the tape H9, when, the tape is traveled, said lever |61 being spring actuated and held against a stop |1| which is extended from the bell crank lever |64 so that the lever |61 will be `caused to swing the bell crank lever |64 on the pin |65 by actuation of the stud |10 against the lever |61, thus swinging the arm |63 to a position wherein the end |12 will clear a projection |13 of a lever |14 which is horizontally swingable at |15 to the plate |66.

When the bell crank lever |64 is actuated by engagement of the stud |10 of the carriage moving tape H9, engaging the projecting end |69 of the trip lever |61, the swinging of the arm |63 of the lever |64 will pull the rod |66 and the accumulator |3| with which the rod is connected, to a position wherein the plurality of gears |42 of said accumulator will be in traveling alinement with the master gear |26 of the carriage |28, and the accumulator |3| will be held in this position by the end |12 of the arm 63, over-engaging the projection |13 of the lever |14, said lever |14 being actuated by the spring |16'to move the projection |13 thereof, into under-engagement with the end |12 of the lever |64 (Fig. 9).

The lever |14 is provided with a pivoted spring actuated trip lever |11 which has an end |18 projecting beneath the carriage moving tape IIS, said projecting end of the lever |11 being in traveling alin-ement with the stud |10 of said I 60, the accumulator thereby being released from its operating position with the master wheel |26 of the carriage I 28.

The shaft |31 which extends longitudinally beneath the base plate |6 and having the segmental gear |36 Xed thereto at one end, is provided at its opposite end with a Xed member I 80 for the support of a toe lever IBI which is pivoted at |82 to said member, said toe member being normally held against a seat |83 formed on the member |80 by a retractile spring |84 which is secured to the member |80 and the toe lever I8I. A retractile spring |85 is secured at one end to an ear |86 formed on the member |80 and at its opposite end to the screw eye |81 depended from the base plate I6.

The member |80 and the toe lever |8| is projected through a slot |88 formed in the base plate I6, and the toe lever 8| is disposed in traveling alinement with a series of spaced alined studs |90, of which there are four, and are depended from and secured to the carriage moving tape ||9, each stud |90 in turn, when traveled in one direction by the carriage tape ||9, engaging with the toe lever IBI, thereby rocking the member |80 and the shaft |31 and the segmental gear |36 thereof, in engagement With the teeth |35 of the master gear carriage |28, will move the master gears |25 and |26 thereof, into operating positions with respective accumulatore |3| and |32 (Figs. l, 2, 3 and 6).

The carriage moving tape I|9 is connected at one end to the typewriter carriage |00 by the screw |9| and washer |92 (Figs. l and 3), said carriage tape passing over an upper disposed guide roller |93 and a lower disposed guide roller |94 which are supported from a standard |95 by respective bolts |96, and disposed in horizontal alinement from the roller |94 adjacent the opposite side of the base plate I6, is a guide roller |91 which is supported on a bolt |98 which is extended from a bracket |99.

The carriage tape I|9 extends horizontally beneath the rollers |94 and |91 and above the base plate, as shown in Figs. l, 3, 6, '1 and 8, and is secured at its other end to a sheave drum 208 which is operated in a tape winding direction by an encased clock spring 20| .which is secured at one end at 202 to the inner periphery of the casing 203 of said clock spring, and at its inner end at 204 to the bolt 205 on which the drum 200 is turnably mounted, said bolt 205 being extended from the supporting bracket 206 which is secured to the base plate I6.

The carriage moving tape ||9 is also provided with a pair of studs 201 which are disposed in alining travel on the tape inwardly of the series of studs |90, the studs 201 having the same spaced relation as the rst two of the studs of the series of four studs afore mentioned and designated |90, but each stud 201 being disposed a corresponding distance in advance on the tape to each respective stud |90 of the first two studs of the series of studs |90.

The reason for this peculiar disposition of the studs 201 with respect to the rst two studs of the series |90, is so that a stud 201 of each corresponding stud |90 will respectively engage one side of the pointed end 208 of the shifting lever ||8 .which is pivoted at 209 to the base plate I6 while a relatable stud |90 will simultaneously be brought into engagement with the toe ylever |8| of the member |80, which is securely xed to one end of the shaft |31 (Figs. 2 and 3).

The engagement of the stud 201 with one side of the pointed end 208 of the shifting lever ||8 will swing the outer extending end of said lever to the position shown in dotted lines in Fig. 2, and in this position the rod |I1 will hold the takeoff gear |06 in mesh with its relatable intermediate gear |03 by cooperation with the bell crank shifting lever ||5. The meshing engagement of the takeoif gear |06 with its relatable intermediate gear |03 will provide for the transferring of adding calculation to the accumulator |32 by cooperation of the master gear |26 there- With, when the master gear carriage |28 is shifted to an operating position by actuation of the shaft |31.

Disposed in rearward position on the carriage tape ||9 are a pair of studs 2|0, said studs 2|0 being in traveling alinement with one another on the tape, but are out of traveling alinement with the pair of studs 201.

Eachof the studs 2|0 is disposed correspondingly forward to respective studs of the last two studs designated |90, said studs 2|0 each being adapted to cooperate 'with the other side of the pointed end 208 of the shifting lever ||6 for swinging it, to move the rod |I1 to shift the takeoff gear |06 into disengaging position with its intermediate gear |03 and into meshing engagement with the relatable reversing gear |04 for transferring subtracting calculation from the master wheel |26 of the carriage |28 to the accumulator 32, when said carriage is shifted to actuating position by cooperation of the shaft |31 by engagement of either of the last two studs of the series of studs |80 with the toe lever |8| of said shaft.

In Figs. 5 and 6, the respective studs |90 and 2 l0 are shown in corresponding positions, the p0- sition of the stud |90 shown in dotted lines, indicating its location with that of the corresponding stud 2|0 when said stud |90 engages the toe lever lili simultaneously with the lug 2|10 engaging the pointed end 208 of the shifting lever ||8. The advanced positions of the respective lugs |90 and 2| 0 shown in said Figs. 5 and 6, indi- .'i cate that the member |80 has been rocked by the stud 90 engaging and pushing the toe lever ISI of said member and that the stud 2|0 has cleared the shifting lever I I8 after engaging the pointed end 208 of said lever and actuating said lever.

As the operation of the studs |10, |90, 201 and 2|0 with the respective parts to be actuated, may tend to buckle the horizontal run of the carriage tape H9, a relatively long seating or bearing plate 2 I I is provided, said plate being in the form of a bracket which is secured to the base plate I6, and has portions 2|2 and 2|3 for guiding engagement with the side edges of the carriage tape IIS.

The shifting lever ||8 Which is shown more clearly in Figs, 5, 6, 7 and 8, when specifically defined, comprises a longitudinal member 2|4 having a hooked end 2|5 Which is underengaged in an aperture in the supporting bar 2I6.

The member 2|4 has the pointed end 208 which is raised, and there adjacent is a pair of legs 232 depending from the member 2|4 in stradclling relation with the bar 2|6, and interposed between said bar and the member 2|4 is a seated coil spring 2 I1, said spring serving to hold the pointed end of the member 2|4 in elevated position for engagement ywith respective studs 201-2|0.

The traveling direction of the carriage tape I9 for moving the typewriter carriage |00 to different writing positions as occasioned by actuation of the studs |98 on the toe lever |8| of the carriage operating shaft |31, is in the4 directionof the arrow 2|8 shown on the horizontal run of1 the carriage tape, in Fig. 2, and when the carriage tape is moved in an opposite direction, in returning the carriage and restoring the power tension of the clock spring 28| of the Winding drum 208, the several specified operating studs of the carriage tape, willy engage andpass` the mechanisms with which they cooperate, Without effecting any operating actuation on saidmechanisms for the following reasons:

The member 2|4 of the shifting lever |'|8 on account of being anchored by the hookedr end 2|5 or" the bar 2|5, will bepermitted to be swung downwardly against theY tension of the` spring 2|`|, as the studs 2N2- 281 are engaged thereover, and the activity of the spring 2,|"| will return the member 2|4V toits normal position after each stud has passed thereover (Fig. 7).

Also, as shown` in Fig. 7, ther studs |80 upon being returned, will each engage and` rearwardly force the toe lever |81 in a retarded position, and the spring |84 thereof will subsequently return the toe lever againstl its seat |83.

With respect to the trip levers |.61-|'11 of? respective levers |'84-|I|4, said trip levers will be moved ineiectively by returning travel ofk the stud of the carriage tape H9.

The key levers 89.' of. the typewriter and thekey levers E3 of the calculating attachment, are equal in number and are correspondingly designated with characters from 8 to 9," said key lever groups being separably manually operated, the calculating attachment group of key levers being operated only when calculating is desired, and theV typewriter key lever group being operatedin transcribing ordinary correspondence in.

which calculating is not desired'. To avoid confusion by the operator so. that' the typewriter key group cannot be operated when calculating is desired, a guard 2|'9 hinged at its endsy at 220 to respective legs 221| which extend from respective end frames 48, is located adjacent the typewriter key lever group, and operably connected to an arm 222 at one end of the guard 219 is a shift rod 223` which extends downwardly and is connected' at its other end to a bell crank lever 224, pivoted at 225' to an extension 225 ofthe frame I9.

Connected to the opposite end of the bell crank lever 224, is a rod 221 which extends to and is connected to one end of a bell crank lever 228. The bell crank lever 228 is pivoted to a standard 229 which is secured to and extends upwardly from the base plate I6 (Figs. l, 2 andI 3), said bell crank lever having a depending end 238 which is adaptedv to be engaged and operated by one of the end members |21 of the master gear carriage |28, when the carriage is returned to a neutral position, this position of the carriage through the parts 2|9 to 230 inclusive,

operating to hold the guard 2|9 in an uncovering position in respect to the typewriter key lever group so that they are exposed for operation.

When however, calculating is to be carried on, each stud |98 of the four stud group of the typewriter carriage tape H9 will in turn engage the toe lever I8| of the shaft |31, thereby intermittently rocking said shaft and causing the master wheel carriage |28 to be traveled to calculating positions by operation of the segmental gear |36. of said shaft |31 on the teeth |35 of the carriage |28. As the end frame |21 of the carriage |28 7 intermittently disengages the contacting end 230 of the bell crankl lever 223. a retractile coil spring 23| which is connected at one end to the bell crank lever 222, and at its. opposite end to the extension 226 of the frame I9, will swing said lever and upwardly push. the rod 223, andl the guard 218 will be swung thereby into covering position over the typewriter lever numeraly key group, in a manner as shown in dotted lines in Fig. 1.v

Located in proximity to the extending ends of the armsy 53 of respective trip levers 55, rearwardly thereof, and supported in bearings 234 of the end frames 48, is a transverse shaft 235. The shaft 235v is provided at one end with an operating button 235 and an electric switch 231 there adjacent, said shaft intermediate its ends having. a crank throw part 238 which overengages a catching portion 239 formed on each arm 53 of respective trip levers 56, when the switch 231 is in open position in respect to thesw'tch terminals 24U- 24| (Fig. 1).

Each switch terminal 248-24|', has a branching end 242 of one of the circuit wires of an electric extension plug cord 243 connected therewith, the extension cord 243 being adapted to connect with an electric supply source for operating the motor 53. The switch 231 is provided with a. contacting plate 244 which is adapted to bridge the switch terminals 24U-24| for closing the current circuit of the motor.

When this improved calculating attachment is tobe operated in connection with a typewriter for posting or making out bills, statements and the lke, a posting sheet such as shown in Fig. 17A and` designated at B, is inserted in the typewritery carriage lill of the typewriter A in engagement with the platen roller |00 and the typewriter carriage is moved into writing position by the ordinary intermittently operated escapement means (not shown) of any standard' typewriter wherein the typewriter carriage is propelled from right to left on the typewriter. The motor 53 is then put into operation by turning the shaft 235 to close the electric switch 231, to cause the motor through the pulley 5| thereof and the belt 53, tooperate the pulley 49 to rotate the shaft 45 on which the rollers 45 are mounted.

Turning of the shaft 235 will move the crank throw part 238 thereof, away from over-engagement with the catching portion 239 of respective trip levers 53. The calculating attachment is then ready for operation.

Upon actuation of any of the key levers 63 by the operator, relatable pull rods 6| will actuate respective trip levers 53, thereby releasing the projection 69 of the actuated trip lever 56 from engagement with the stop pin 1| of the relatable drive wheel 48, thereby permitting the cam level '.13 to bear against and push a relatable projecting pin 14 so that the drive wheel 4i? will be moved toa position wherein the corner 88 on the periphery 44 of the drive wheel, will be engaged by a relatable revolving roller 45. The drive wheel 49 will be turned one revolution by rotating engagement of the roller 45 with the periphery 44 of the drive wheel 48, the drive wheel being stopped from further rotation by reason of the stop pin 1| thereof, abutting against the projection 59 of the lever 55 upon completion of the revolution.

During the one revolution turn of the actuated drive wheel 43, the relatable connecting rod 38 which is connected thereto at 39, will reciprocate said connecting rod for one cycle of reciprocation, and the rack bar 24 which is connected to the connecting rod 38 by the pin 31, will be similarly reciprocated, thereby actuating the relatable bell crank lever 8|.

The leg 81 of the bell crank lever 8| which is connected by the hook 88 over the pin 92 of the clamping bracket 94, to the vertical extension 95 of a relatable key lever 89, will draw down upon and actuate the relatable numeral key lever of the typewriter A, to cause the type bar 98 of said lever 89 to be actuated against the platen roller and cooperating ribbon 99 of the typewriter carriage |0|.

On the first half-cycle of travel of the operating connecting rod 38 and its relatable rack bar 24, the tooth rack 28 of said bar 24 under-engaged and meshed with the teeth of the relatable pinion gear 23 on the transmission shaft 22, thereby imparting rotary motion to said gear and shaft to the extent of the number of teeth on the rack 28 corresponding to the value or denomination of the actuated calculating key lever G3, and the stop 33 of the rack bar 24 will be engaged between a pair of teeth of the gear 23 for preventing overriding momentum of said gear.

Upon completion of the actuating cycle of travel of the tooth rack 28, said tooth rack will be swung downwardly on its pivot 21 by the spring 245 which is secured at one end to an ear 26.16 which is depended from the toothed rack 28, said spring at its opposite end being connected to a transverse rod 231 which is supported at its ends in respective extensions 226 of the frame |9. The swinging of the toothed rack 29 will dispose the pin 29 thereof, on a horizontal plane beneath the flange 30 of a relatable trip lever 3|, with the teeth thereof out of mesh with the gear 23, and the rack will be held in this disengaged position while being traveled on its return cycle (Figs. 4 and 14).

Upon the rack bar 24 and the toothed rack 28 carried thereby, being returned to its neutral position, the spring 2&5 will immediately become active to return the toothed rack 28 to its formed position, so that the teeth thereof, will be again in alinement for cooperation with its relatable gear 23, ready to repeat stepping calculation on the gear 23 when the relatable calculating key E3 is again actuated.

The reason the spring 245 is capable of swinging its relatable toothed rack 28 into and out of engagement with its relatable gear 23, is because of the spring being connected at its lower end to the ear 246 of the toothed rack 28, in a position rearwardly of the pivot 21 of the toothed rack, when said toothed rack is in neutral position, as shown in Fig. l, and said spring when the toothed rack is moved on its actuating cycle, being positioned forwardly of the pivot 21 of the toothed rack, as shown in Fig. 4. This manner of actuation of the spring 245 on the toothed rack 28, is occasioned by the location of the rod 241 to which the spring 245 is secured at its upper end.

Each toothed rack 28 is provided with a similar ear 245 to which a respective spring 245 is secured at one end, said springs at their opposite ends being connected to the rod 241, and in addition, each rack is provided with a laterally projecting lug 248 for under-engagement with respective rack bars 24, against the tension of respective springs 2451.

When the toothed rack 28 is swung downwardly to engage the pin 29 thereof, on a plane beneath the flange 30 of the relatable trip lever 3|, said relatable trip lever will be simultaneously swung upwardly by its spring 34, immediately upon the pin 29 reaching the end of the flange 30 upon the rst operating cycle of the toothed rack 28, thus cooperating to over-engage the pin 29 of the rack 28.

While a respective trip lever 3| is shown, for cooperation with the pin 29 of respective tooth racks 23, if desired, the trip levers may be made in a unitary structure wherein the extending ends of said levers may be tied to one another, and the structure having end bearing only, with the rod or shaft 32.

The value relating to the denomination of the actuated calculating key 63 was imparted to the transmission shaft 22, and the transmission gear i9? on each end of said shaft transferred the calculated value to respective intermediate gears |03 and reverse gears |04 and respective relatable take-oif gears IUS-|05, to respective relatable iiat-sided shafts |08| and their respective relatable master gears |25-|26, from where the calculated value of the operated key lever 63 is transferred to relatable accumulators |3|-|32, as the master gear carriage |28 is moved to position the master gears into transferring positions with relatable accumulator gears |42, so as to carry the calculated value to relatable counting wheels |30 of the respective accumulators ISI-|32.

As the posting sheet B, shown in Fig. 11, is provided with a series of four posting columns C, D, E and F, which correspond in number to the alined studs on the typewriter carriage moving tape H9, it is obvious that the first stud |90 in the traveling direction of the typewriter carriage moving tape H9, will be the first stud to engage and operate the toe lever |8| to rock the shaft |31 for intermittently moving the master gear carriage |28 (by the cooperable typewriter carriage escapement means not shown, which is released by actuation of any of the typewriter key levers 89) to a postion wherein the master gears |25|26 thereof, can operatingly transfer into their relatable accumulators |3|| 32, the calculated values into the accumulators simultaneously with the same calculated values being imprinted or typed in thefirst column C of the posting sheet B to indicate old balance.

On the initial movement of the master gear carriage |28 by actuation of the segmental gear |33 with the teeth |35 of said carriage, the guard 2|9 was operated to a closing position over the designating buttons of the typewriter key levers 89 by the retracting of the spring 23| on the shift rod 223 upon release of the depending end 230 of the lever 228, by the master gear carriage |28.

With further regard to the typewriter carriage moving tape ||9 and the studs |90 thereof, from an inspection of Figs, 2 and 3, it is to be noted that the first stud |90 in the order of operating travel, is spaced a considerable distance away from the second stud |90, comparable with the spaced distance of the second and third and the third and fourth studs |90.

The larger spaced relation of the first and second studs |90, is adapted to correspond with the spaced relation between the columns C and D of the posting sheet B, so that the operator can by operation of the typewriter keys, imprint a monthly date in the column G, a department number in the column H and a description of the goods sold, in the column I on the posting sheet B in the intermediate space between the posting column C and'D on the posting sheet, as during the operation on the typewriter keys, the master gear carriage |28 will be held in an inactive position, and during which time the guard 2|9 will be held in an uncovering position with respect to the designating buttons of the typewriter keys 89.

After typewriting has been done in the col umns G, H and I, the second stud |90 in the order of the typewriter carriage tape travel, will engage the toe lever |8| of the rock shaft |31, and through the segmental gear |36 and the teeth of the master gear carriage |28, will move said carriage whereby calculated values may be simultaneously transferred through the master wheels of the carriage to relatable accumulators |3||32, simultaneously with the typing of said values on the posting sheet in column D, denoting debit, and of course the designating buttons of the typewriter key 89 will have been again covered by the guard 2| 9 so that the operator will not be confused, as may be likely in the event that lthe typewriter key buttons, were exposed.

Each time the toe lever |8| of the rock shaft |31 is released by respective studs |90, the retractile coil spring |85 which is connected at one end to the member `|80 to which the toe lever |8| is pivotally mounted, will return said parts and the master gear carriage |28 with which they are related, to their neutral positions.

The third stud |90 of the series of four studs, when engaged by operating travel of the typewriter carriage tape ||9, against the toe lever |8| of the rock shaft |31, will also cause the master carriage |20 to be moved to calculated value transferring positions so that the master gears of the carriage can cooperate with their respective accumulators |3|-|32, for entering or totalizing the amounts to be indicated in the column E signifying credit When the fourth and last stud |90 of the series of four studs, is traveled to a position of engagement with the toe lever |8|, the master gear carriage |28 will be moved to positions wherein the master gears thereof, will transfer the calculated value which is being entered by the typewriter keys in the column F, denoting new balance, on the posting sheet B, to the accumulators |3||32.

From the afore description with respect to the studs |90 on the typewriter carriage moving tape H9, it is clear that said studs are solely for the purpose of intermittenly moving the master gear carriage and the master gears thereof, into calculating positions with the accumulators |3|-|32.

The alining pair of studs 201, the alining pair of studs 2|0 and the stud |10, which are also carried by the typewriter carriage moving tape ||9, however, have their functions which are adapted to be performed in one of the many forms of bill posting and/or bookkeeping which are possible by the structure of the calculating attachment here described and shown in co-nnection with the typewriter.

In order to bring out the function of the studs 201, 2|0 and |10, in coinciding operation with the studs |90 of the typewriter carriage moving tape ||9, attention. is directed to the posting sheet B, shown in Fig. 17, and the calculated values designated thereon in the columns C, D, E and F.

In order to enter the calculatedV values shown on the posting sheet B, column C is located' in typing position by an adjusted tabulator stop on the typewriter A (not shown), and simultaneous therewith, the master gear carriage |28 is moved to calculating positions with respect to the accumulators |3||32 by operation of the first stud on the carriage moving tape H9, Aand the shifting lever ||8 is also simultaneously engaged and moved by the first stud 201, to exert a pull on the rod ||1 for actuating the bell crank lever ||5 to shift the take-olf gear |06 into meshing relation with its relatable intermediate gear |103, so that the shaft on which the master gear |26 is slidably mounted, will be actuated in adding direction `in respect to the counting wheels |30 of the kaccumulator |32.

When the column C of the posting sheet B is thus positioned, and the operator in setting out the value of $18.60, positions Ythe master gear |26 so that said gear will cooperate with and transfer to respective accumulator gears |42 which extend in the path of longitudinal travel of the master gear |26, the value of 18.60 by actuation of the relatable calculating key levers 63, bearing relatable designating characters. The accumulator |32 will thus show the old balance -of 18.60, as shown thereon in Fig. 2, and correspondingly -said amount or value will lbe printed in the old balance column C.

When the last calculating key 63 designating the character 0 is operated, the master wheel |26 .and carriage |28, is in the position indicated in dotted lines in Fig. 2, and from this position the carriage .is returned to its neutral position by the spring |85, and the operator by actuation of the typewriter keys only, will write the requisites in the columns G, H and I, on the same line on which the old balance of $18.60 has been imprinted, and by the time that the typewriter carriage I0| bearing the posting sheet B is located in typing position in the column D, the second stud |90 of the carriage moving tape |9,wil1 operate to move the master gear carriage |28 to transferring positions wherein the master gears |25- |26 will be located to transferring positions with their respective accumulators |3|-|32.

It is to be noted that when the amount of $18.60 was entered in column C and indicated in the accumulator |32, that the master wheel |25 was inactively passed by its relatable accumulator |3| by reason of said accumulator being withheld from engagement therewith by the spring |59. When, however, the second stud |90 engages the toe lever |8| to move the master gear carriage |28 to calculating positions in respect to the accumulators |3|-|3'2, the second stud 201 will also engage the shift lever I8 to either re-eng-age or hold the take-off gear |06 in mesh with its relatable intermediate gear |03, and Ysimultaneously therewith, the stud |10 will cooperate with the projecting end |69 of the trip lever |61 on the bell crank lever |64, to exert a pull on the rod |60 for drawing the accumulator |3| into the position wherein the accumulating gears |42 thereof, will be projected into aline-V ment with the travel of the master gear 25, the accumulator |3| being held in this position by the end |12 of the bell crank lever I64` overengaging the projection .|13 of the cooperating lever |14.

With further regard tothev posting sheet B and the debit column D' thereof which shows the amount of 10.40, indicating the value' of an additional charge for 1 dress, upon actuation of the calculating keys 63' bearing correspending characters, the amount of 10.40 will` the accumulator I3 I whereas in the accumulator |32, this amount will be added to the heretofore indicated 18.60, thus indicating an amount of I 29.00 in |32 accumulator.

The additional charges of the separate items y"1 hat and 1 pair shoes Shown in column I of the posting sheet B, for which the amounts of 2.90 and 4.50 were respectively charged, are entered by shifting the typewriter carriage to thev typewriter writing positions to describe them in the columns G, I-I and I, and of course when the calculating keys 63 bearing characters corresponding to the charge 2.90 are operated to be printed in the column D, the amount 10.40 heretofore indicated in accumulator I3I, will be changed by adding the amount of 2.90 s as to indicate 13.30 in the accumulator I3I, because the stud on the typewriter carriage tape |I9, will have again been operated to shift the accumulator I3I into operating alinement with its relatable master gear |35. Simultaneous with the entry of the charge 2.90 in the accumulator |3I, said amount will be added to the heretofore amount of 29.00 in accumulator |32, thus indicating the amount of 31.90 in accumulator |32.

Similarly, the charge of 4.50 is subsequently added to the amount of 13.30 heretofore indicated in accumulator I3I, thereby making a total reading of 17.80 in said accumulator, as well as said amount being added to the heretofore indicated amount of 31.90 in accumulator |32 so that said accumulator |32 will now show a total of 36.40.

From the above description in respect to the charged values in the debit column D on the posting sheet B, it is clear that said entries were made on the fposting sheet simultaneously with them being totalized in the accumulator I3I, to the amount of 17.80 as indicated in said accumulator, in Fig. 2.

As the entry of the value 4.50 is the last posted entry in the debit ycolumn D of the posting sheet By and as in this instance there are no entries to be posted in the credit column E, the typewriter carriage |0|, is moved to a writing position in the new balance co1- umn F, without making any entries in the credit column E. During this movement of the carriage |0|, by the carriage tape II9, there was simultaneous operation of the third stud I 90 and the first stud of the pair of studs 2I0 of the tape IIS, on the toe lever I8I and the shifting lever IIS, respectively, to move the master gear carriage |28 into calculating transferring positions, and to shift the take-off gear |06 into meshing engagement with its relatable reversing gear |04, even though the operator omitted making entry of a credit value in column E.

When the posting sheet B is positioned by the typewriter carriage I 0| t0y writing position in the new balance column F, the master gear carriage |28 obviously has been correspondingly positioned by engagement of the last stud |90 with the toe lever IBI to actuate relatable mechanisms for locating the carriage in this position, and of course, the second stud of the pair of studs 2| 0 will have operated the shifting lever I I 8, to disengage the take-off gear I 06 from the gear I 03, and to engage said gear |06 with its relatable reversing gear |04, in the event that the shifting lever II8 has been shifted from the position in which it was placed by the rst stop 2I0 which corresponds with the credit column E.

CTI

Cil

rEhe operator upon making entry in the new balance column F, will operate the calculating keys 63 which have the characters corresponding to and designating the Value 36.40 which is shown in the accmumulator |32, this last entry completing the posting of the sheet B of the debtor to which credit has been extended. Simultaneously with the operation of the calculating keys 63 designating 36.40, the corresponding counting wheels |30 will be operated to positions to indicate 00.00 on account of the reversing operation imparted thereto by the take-off gear |06 which has been placed in mesh with the reversing gear |04, thus clearing the accumulator |32, ready for posting the next bill.

In clearing the accumulator |32 by subtraction, if an error is made by the operator in copying the total 36.40 and 35.40 was copied instead, a balance of 1.00 will show in the accumulator, thus indicating the error.

As many establishments, in making out bills and the like, post the debits and credits separately, the amount of 17.80 which was totalized in accumulator ISI from the entries made in the debit column D on the posting sheet B, is permitted to remain in the accumulator so that other debit values when entered in the debit column of successive posting sheets during a period of one days time, may be accumulated and totalized in the accumulator |3I to show the total of debits accumulated during that billing day.

In posting credits, the lposting sheet B is again engaged in the typewriter carriage |0| to enter the items J with which the customer is to be credited on the postingv sheet in the relatable columns thereof. To post the credits and to accumulate the credits during posting, in order t0 acquire a total of the credits entered over a posting period, the stud |10 on the carriage moving tape II9 is removed and secured in the aperture 249 (Fig. 2) formed in the tape I|9, said stud |10 when so located, being positioned to actuate the bell crank lever |64 by engaging the trip lever |61 thereof, to place the accumulator I3| into operating alinement with the master gear |25, when entries are made in the credit column E.

In posting the items J for credit purposes, the required accumulator keys B3 are actuated to print 36.40 in the old balance ycolumn C, and

the like value is transferred in accumulator |32- by the rst stop |90, causing the relatable mechanisms to operate the master gear carriage to transferring position in relation to accumulator |32. The typewriter carriage I 0I is then moved o1' tabulated for posting the requisities in the columns G, H and I, as relating to By retd--l hat and is subsequently positioned so that thel credit column E will be in writing alinement, and when the calculator keys 63 are operated to type the characters 2.90 in said column, the accumulator I 3| will have been moved into receivingcooperation with the master gear |25 so that the 2.90 value of the returned hat will be transferred into said accumulator as said value is entered in the credit column E.

As the take-off gear |06 has been placed in mesh with the reversing gear |04 by the shifting lever I I8 being actuated by the first stud 2 I 0, the master gear |26 will be turned in subtracting direction to deduct the value of 2.90 from the accumulator |32.

After entering the credit 2.90 in the credit column E, the typewriter carriage |0| is returned to the `position in order to enter the bja cash item in column I and after which the typewriter carriage is tabulated to the position to enter the amount -of 18.60 in the credit co1- umn E, this amount being accumulated in the accumulator |3| and 'is simultaneously subtracted from the accumulator |32, said accumulator |32 then showing a balance of 14.90 whereas the accumulator |3| will show a total of 21.50 which signifies the amount the customer has been credited with. The typewriter carriage is then tabulated to writing position in the new balance column F and the ofperator will then copy the balance 14.90 from the accumulator |32, the Aoperation of relatable calculating keys 63 imprinting said balance in the new balance column F, and simultaneously subtracting the value o'f said balance from the accumulator |32, thereby clearing said accumulator in readiness for the next posting sheet to be inserted for credit posting.

'To accomplish 'bill posting, of the character described, including the posting of debits and credits, it is clear that the arrangement of the reversib-ly operable alined disconnected flatsided shafts |08 and l||| of respective master gears Wil- 126, form essential requisites therefor, and the accumulators |3|-|32, respectively.

From an inspection of Figure 13, it is to be noted that each of the studs |90 and 201 shown in said figure, is provided with a threaded shank 250, each stud being projected through a respective aperture which is formed in the typewriter carriage moving tape ||9 and is threadingly engaged in a respective lock nut 25| which is seated in respective counter-sunk recesses 252 formed in the tape H9. However, the studs may be secured in any suitable manner. The tape ||9, if desired, may be of spring steel or it may be made from a closely woven strong fabric.

When no bill posting is required over a period of time and it is desired to use the typewriter only, the seating or bearing plate 2|| which may be made of two relatable parts K and L, as shown in Figs. and 16, can be adjusted relative to one another to retain that portion of the horizontal run of the typewriter carriage moving tape ||9, in a position whereby the studs |90, 201, 2|0 and |10 will be withheld from operating contact with the toe lever I8 the lever |8 and the levers |64 and |14, respectively.

For providing the adjustment of the part K of the seating plate 2|| relative to the part L, the part L is xedly secured to the base plate I6, and the vertically walled portion 253 of the part K is held in slidable contact with the vertically walled portion 254 of the part L, by the vertically alined pairs of headed pins 255 which are extended from the wall 254, into respective guiding slots 256.

The part K is provided with a pair of longitudinally extending lips 251 which under-engage respective edges of the typewriter carriage moving tape I9, and formed in the wall portion 253 is an intermediately disposed elongated opening 258 in which a cam 259 is disposed, said cam being fixedly secured to one end ofV a hand operated shaft 260 which passes through the walled portion 254 of the part K at a right angle thereto, and has bearing connection at 26| therewith.

The shaft 260 may be extended rearwardly of the calculating attachment, and when the shaft is operated to locate the cam 259 thereof in the position shown in Fig. 15, the seating plate 2|| vated position in respect to the part L, and the portion of the carriage moving tape engaged between the lips 251 of the part K, will hold that portion of the carriage moving tape 9 in ele- 5 vated position when the typewriter carriage is moved by the tape, and consequently, the studs carried by the tape will be withheld from actuating contact with the operating parts for the calculating attachment. y

For lowering the part K of the seating plate 2|| to position the typewriter carriage moving tape |19 so that the studs carried thereby, can engage the mechanisms with which they are adapted to cooperate, the shaft 260 upon being l5 returned in a reverse direction, will cause the thrusting periphery of the cam 259 to bear against the lower side of the opening 258, and the part K will be also held in its lowered position by the cam.

For holding the legs 81 in sliding contact with their relatable pins 92 of the clamping brackets 94 so that the pins 92 may be maintained in alining travel with respective hoo-ks 88 of the legs 81, a spring 262 is connected at one end to a respective leg 81 and at its opposite end to the arm 85 of respective bell crank levers 8|, as shown in Fig. 1.

From the aforegoing description comparable with the several i'igures of the drawings, it is so clear that a unique combination of relatable elements is provided for adaptably combining a calculating attachment device with a writing machine and/or typewriter whereby a unique manner of calculating can be accomplished, and at :t: the same time, the calculating results are automatically transferred and imprinted through the medium of the typewriter.

Having thus described the invention so that those skilled in the art will be able to practice o the same, it is obvious that constructional modications of the device are possible without departing from the spirit and scope of the Present invention, and therefore it is to be understood that it is not necessary to limit the invention by 5 the terms used in the foregoing description, ex-

cepting such as the state of the art may require.

What I claim is:

1. A calculating machine having a traveling carriage and a master gear rotatably mounted in said carriage, said carriage having a longitudinally extending bar with a recess on one edge thereof, an accumulator having counting gears and respective meshing auxiliary gears, said auxiliary gears being disposed in traveling alinement with the master gear and to be engaged thereby as the carriage is traveled, each counting gear having a respective cam, swingable levers extended from the accumulator and having their extending ends resting on said bar, a gear support- 0 ed by each lever each having meshing engagement with a respective counting gear, and the teeth of each lever gear being in locking engagement with a respective cam of an adjacent lower order counting gear, the recess of said bar providing for the swinging release of respective levers for releasing the teeth of the gear thereof -from locking engagement with a respective cam of an adjacent lower order counting gear when the master gear is in mesh with a respective auxiliary gear of an adjacent higher order counting gear.

2. A calculating machine having -a traveling carriage and a master gear rotatably mounted in said carriage, said carriage having a longiand/or part K thereof, will be retained in eletudinally extending bar with a recess on one edge thereof, an accumulator having counting gears and respective meshing auxiliary gears, said auxiliary gears being disposed in traveling alinement With the master gear and to be engaged thereby as the carriage is traveled, each counting gear having a respective cam, swingable levers extended from the accumulator and having their extending ends resting on said bar, a gear supported by each lever each having meshing engagement with a respective counting gear and the teeth of each lever gear being in locking engagement with a respective cam of an adjacent lower order counting gear, the recess of said bar providing for the swinging release of respective levers for releasing the teeth of the gear thereof from locking engagement with a respective cam of an adjacent lower order counting gear when the master gear is in mesh with a respective auxiliary gear of an adjacent higher order counting gear.

3. The combination of an accumulator having totalizing gears and respective alining locking cams, an actuator for selective cooperation with said totalizing gears, a plurality of spring actuated members each having a gear in mesh with a respective totalizing gear and in engagement with a respective cam, and means movable with the actuator for simultaneous locking cooperation with al1 but one o-f said members While the actuator is in geared cooperation With the totalizing gear of the respective unlocked member.

4. The combination of a master gear and an accumulator having totalizing gears and respective alim'ng locking cams, a plurality of locking levers borne by the accumulator and each carrying a gear which meshes with a respective totalizing gear and engages a respective cam, and extending means movable with the master gear and paralleling the accumulator for simultaneous locking cooperation with all but one of said levers While the master gear is in cooperation with the respective totalizing gear of the unlocked lever.

5. An accumulator having totalizing gears and respective alining locking cams, an actuator for selective cooperation with said totalizing gears, a plurality of movable elements borne by the accumulator and each having a gear for cooperation with a respective totalizing gear and for engagement with a respective cam, and a longitudinal locking member movable with said actuator for simultaneous locking engagement with all but one of said elements for preventing unlocking movement of the gears of the locked elements from the cams with which they are respectively cooperable, While the actuator is in cooperation With the respective totalizing gear of the unlocked element.

FERDINAND J. TILLMAN.

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