US925685A - Adding-machine attachment for type-writers. - Google Patents

Description

L; M. DA NIBL. ADDING MACHINE ATTACHMENT FOR TYPE WRITERS. APPLICATION FILED APR.27, 1908.

5 SHEETS-SHEET 1.

Patented June 22, 1909.

L. M. DANIEL. ADDING MACHINE ATTACHMENT FOR TYPE WRITERS APPLICATION FILED APB.'27, 1908.

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APPLIGATION FILED APR.27, 1908. 925,685.

Patented June 22, 1909.

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L. M. DANIEL. ADDING MACHINE ATTAGHMEN T FOR TYPE WRITERS. APPLICATION FILED APR.2 7,1908.

925,685. Patented June 22,1909.

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APPLICATION FILED APR.27,190B. 925,685, Patented June 22, 1909 5 SHEETS-SHEET 5.

Suvzntoz UNI'lED sTAtrns PATENT OFFICE.

LAW ERl-JXMQ l. DANIEL, OF THORNTON, WASHINGTON, ASSIGNOR OF ONE-HALF TO ROBERT M. DA IEL, OF LACROSSE, WASHINGTON.

ADDING-MACHINE ATTACHMENT FOR TYPE-WRITERS.

- Specification of Letters Patent.

Patented June 22, 1909.

Application filed April 27, 1908. Serial No.. 429,534.

To all whom it may concern:

Be it known that I, LAWERENOE M. DANIEL, citizen of the United States, residing at Thornton, in the county of WVhitman and State of Washington, have invented certain new and useful Improvements in Addingi\IachineAttachments for Type- Writers, of which the following is a specification.

The present invention relates in general to adding machines and more particularly to an improved device of this character adapted to be applied to a typewriter so as to indicate the sum total of a series of numbers tabulated thereby.

The object of the invention is the provision of an adding machine attachment which is accurate and reliable in its operation and does not in any manner interfere with the free use of the typewriter for ordinary purposes;

For a full understanding of the invention and the merits thereof and also to acquirea knowledge of the details of constructionand the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1. is a perspective view showing the adding machine attachment applied to a typewriter. Fig. 2 is an end view'of a typewriter provided with the attachm'entl Fig. 3 is an enlarged transverse sectional view through the casing applied to the carriage of the typewriter and the upper portion of the frame secured to the back of the typewriter.

Fig. 4 is an enlarged perspective view of a portion of the indicating mechanism mounted within the casing. Fig. 5 isa plan view of. the same. Fig. 6 is a detail view of one of the carrying levers. Fig. 7 is a similar view of the resetting bar, portions being removed. Fig. 8 is a diagrammatic view showing the manner of mounting the operating bars of the adding machine attachment and the manner in which they are connected to the key levers of the typewriter. Fig. 9 is an enlarged detail view of the mechanism for guiding the reciprocating racki Fig. 10 is a iongitudinal sectional view through one of the guide bars showing the position of the blocks which are slidably mounted upon the same when the rack is moved forwardly into operative position. Fig. 11 is a similar view showing the position of the blocks when the rack is moved rearwardly into 55 inoperative position. Fig. 12 is an enlarged perspective view of the upper portion of the rack. Fig. 13 is a longitudinal sectional view through the same.

Correspondingand like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The embodiment of the invention shown on the accompanying drawings is particularly designed to be employed in connection with a Remington typewriter provided with a tabulator.

The numeral 1 designates the typewriter which is of the conventional construction and is equipped with a tabulator, the said tabulator being actuatedby the keys 2 and comprising a series of vertical levers 3 located at the rear of the typewriter, the lower ends of the levers being swung rearwardly when the keys 2 are ressed inward.

Secured to t e back of the typewriter 1 and projecting rearwardly therefrom is a frame 4, (see Figs. 1 and 2) the upper portion of the frame comprising a longitudinal bar 4* and the transverse end bars 4*.

The adding machine mechanism proper is carried by a casing 5 mounted upon the carriage 6 of the typewriter and'arranged in the rear thereof, the ends of the'casing 5 being extended forwardly and secured to the carriage at 7 while the lower ortion of the casing is rovided withv a tracr or bar 8 (see Fig. 3) iiaving the lower face thereof grooved to receive rollers 9 adapted to travel upon a track 10 connecting the end bars 4 of the frame 4. It .will thus be apparent that the casing 5 is so mounted as to move-with the carriage 6 of the typewriter. Connecting op osite ends of the casing 5 are the longitudinally disposed and parallel shafts 11 and i 12, the forward shaft 11 having a series of indicating disks 13 loose thereon, one of these disks being rovided for each space of the t 'pewriter and the said disks hav ng numera s on the peripheries thereof which are adapted to be displayed through a view opening 14 in the casing 5. This view 0 ening is preferably located at the front 0 the casing so as to be clearly visible to the operator of the typewriter. I

Rigidly secured to one side of each of the indicating disks 13 is a gear wheel 15 (see Figs. 4 and 5) meshing with a corres ending ear wheel 16 loose u ontlie rear 5 aft 12;

iieans is also provide for transmitting mo- 110 'tion from each of the gear wheels 16 to' the gear wheel of the next higher denonnna- .tion, as from units to tens and for this pur pose-car levers '17 are utilized, the said carrying evers being adapted'to engage pins projecting i'rom the sides of the gear wheels 16and being connected to pawls 19 which engage the teeth of the gear wheels 15 upon the indicating disks 13 of the next higher denomination. These carrying levers 17 normally assume an ap roximately vertical position and are pivota y mounted at an intermediate point u on arms rojecting rearwardly from a s aft 21 para el to the shafts 11 and 12 and arranged between and somewhat shove the same. This shaft 21 preterm-31y h s an angular formation to revent rotation of the arms 20 thereon an as shown on the drawing the shaft is triangular in cross section and the arms 20 are held in an adjusted position thereon by means of the set screws 22. Sprmgs 23 secured to the arms 20 against the carrying levers 17- to swing the same upwardly into operative position, (see Fig. 6) and stops 24' upon the carrying levers engage the arms to limit'the movement thereof. However, as soon as one of the indicating disks 13 displays the numeral 9 through the view opening 14 one of the pins 18 upon the corresponding gear wheel 16 is brought into engagement with the lower end.- of the carrying lever 17 so that upon a continued movement of the gear wheel 16 the carrying lever will be swung about its pivot and the pawl 19 drawn rearwardly to turn the indicating disk 13 of the next higher denomination. through a space corresponding to one unit. At the same time the indicating disk previously showing the 9 through the View opening is turned to show either a zero or t e proper number of units in excess of ten as required by the number added. As soon as the pin 18 slips from under the carrying I ative lever 17 the spring 23 moves the same again into operative position and the pawl 19 slips forwardly over the teeth of the gear wheel 15. A resetting bar 25 (see Figs..5 and 7). extends underthe variouspawls 19 so as to lift the same. out of engagement with the re spective gear wheels 15 and into an inoperposition when the bar is moved upwardly.

Plungers 26 which are slidably mounted upon the arms 20 engage the teeth of the gear wheels 16 for turning the same when it is desiredto reset the machine and to cause all of the indicating disks 1.3 to display a zero through the view opening. The resetting plungers 26 extend upwardly through the casing 5 where they terminate in fingerpieces 26*; and the said plungers are normally held upwardly in an inoperative position by means of coil springs 27 surrounding the same and interposed between the arms 20 rack normally ceases and pins 28f assing transversely through the plungers. t will thus be apparent that 1n order to reset the machine it is merely necessary to swing the resetting bar 25 upwardly, thereby lifting the pawls 19 into an inoperative position, and to then operate the plun gers 26 until the indicating disks13 have allbeen turned to display a zero through the view opening.

It may be found desirable to employ some form of retarding means to prevent accidental movement of the indicating disks 13 and also to prevent a movement thereof except through the full distance of one tooth so as to bring the next successive number opposite the view opening. For this purpose small rollers 29 are provide which engage the teeth of the gear wheels 5, the said rollers being carried by springs 30 which hold them in a yielding engagement with the gear wheels and are secured to a bar 31 extending longitudinally through the casing 5.

As the carriage G'inoves back and forth the gear wheels 16 are adapted to be brought successively into cooperative relation with a vertically reciprocating rack 32 (see Fig. 3) carried by the frame 4 and actuated by the key levers 33 of the typewriter. The sides of the rack 32 are loosely received within yoke members 3 1 (see Figs. 9 and 10) pivotally mounted upon the blocks 35 so as to swing about a horizontal axis. These blocks 35 are slidably mounted upon guide bars 36 secured to the longitudinal bar 4? of the frame 4 at an intermediate point and projecting inwardly toward the typewriter. In

the preferred embodiment of the. invention these guide bars 36 have a channeled formation, the open sides of the guide bars facing inwardly toward each other and receiving the blocks 35. When these blocks are moved rearwardly into contact with stops 37 the rack 32 will.not engage the gear wheels 16 when moved upwardly, while when'the blocks 35 are moved forwardly the rack 32 is so positioned as to engage the gear wheels and turn the same when a reciprocating movement is imparted thereto. In this connection it may be noted that the teeth 38 of the groject forwardly therefrom at approximate y right angles but are so mounted as to readily swing upwardly should they meet with any resistance u on the downward movement of the rack. 13.) It will thus be obvious that when the blocks 35 are locked in a forwardposition by means of the detent's 39 and the rack 32 is See Fig.

moved upwardly the teeth 38 thereof will" the typewriter which has been pressed, the" key bearing the numeral 9 moving the rack 1 (see Fig.- 10) operate to hold the nine times as far as the key bearing the nu.- meral 1 and so on. Upon the downward movement of the rack however, the teeth 38 thereof swing upwardly so as to clear the gear wheel and the latter member is not turned back to its original position. -The detents 39 for locking the blocks 35 at the forward limit of their movement are shown as secured to the bottom of the guide bars 36 and as provided with arms which project upwardly into the channeled ortion of the guide bars so as to engage the hlocks. These detents are secured to the arms 40 of a spring strip 40 (see Fig. 9) which is held in position by the transver e bars 41 connecting the rearportion of the guide bars 36.

The normal position of the blocks 35 is at the rearward limit of their movement in engagement with the. stops 37, and for'the purpose of automatically moving the blocks for- I ward to throw the rack 32 into an operative position when one of the tabulator keys 2 is pressed inward, Wires or cables 42 are utilized, the said wires being connected to the blocks a 35, extending forwardly around the guide members 43 upon-the frame of the tabulator,

and downwardly. around similar guide memhers 44 at the lower portion of the tabulator frame, the extremities of the wires being conneoted to a U-shaied lever 45 the arms of which are pivotally connected to the said tabulator frame while the cross bar thereof extends across the lower ends ofthe vertical levers 3 of the tabulator. It will thus be apparent that as soon as a tabulator key 2 is op- 'erated the lower end of one of the tabulator levers 3 is swung rearwardly and the lever 45 thereby moved so as to pull upon the wires 42 and draw the blocks 35 forward until they are engaged by the detents 39.

blocks 35 normally against the stops 37 and these springs 46 are shown as surrounding the wires 42 and interposed between the blocks and the ends of the guide bars 36.

A trip bar 47 (see Fig. '3) is carried by the casing 5 and adjustably mounted u on this bar are the trips 48 which have a dou le-cam formation and are adapted to engage a member 49 upon the spring strip 40 so as to force the same downwardly and release the detents 39 when the carriage of the typewriter has moved through a predetermined distance in either direction. By suitably adjusting the trips 48 upon the trip bar 47 the adding machine attachment may be caused to operate within any desired limits of the movement of the carriage, but as soon-as this limit is exceeded one of the trips 48 Wlll engage the member 49 and move the spring 40 downwardly so as to swing'the detents 39, out of engagement with the blocks-35 and permit the said blocks to be forced against the stops 3? by means of the springs 46.

The lower end of the rack 32 is loosely con- Springs 46 nected to the cross bar of. a swinging U-shapcd frame 50, {see Figs. 1 and 2) the two arms of the frame being diverged forwardly and having their extremities pivotally connected to cars 51 projecting rearwardly from the base of the typewriter. The rear ends of the lovers 52 of the adding machine attachment project under the cross bar or the U frame 50 see Fig. 8 while the forward extremities of the said levers are loosely connected to the 'arms 53 projecting 'up wardly from intermediate points of the key levers 33 of the typewriter and serying in the usual'manner as a means for connecting the key levers to the type bars of the machine. The various levers 52 of the adding machine attachment are pivoted at intermediate points in their length upon the fulcrum memers 54, the osition of the fulcrum members being varie for the different levers so as to subdivide the levers into arms of different lengths. The relative lengths of the two arms of the various levers 53 are so proporend of the lever corresponds in magnitude to the numeral upon the typewriter key which has been depressed, the key bearing the numeral 2 causing the rear end of the corre sponding lever 52 to swing upwardly twice as far as the key bearing the numeral 1, and so on throughout the various numerals up to the numeral 9, no lever being provided for the character zero. y

In the operation of the device the blocks 35 as has been previously described are automatically moved forwardly through the medium ofthe wires 42 and the rack 32 thereby thrown into an o erative position as soon as one of the tabufhtor keys 2 is pressed inwardly. As the various keys of the type-' writer are depressed the corresponding levers 52 of the adding machine attachment are operated to move the rack 32 upwardly and turn the gear wheels 16 through distances corresponding to the numbers upon the typewriter keys. Should the first numeral to be tioned that the upward movement of the rear tabulated be 500 the typewriter key 5 would tive relation with the rack. However, since no lever 52 is provided for the character zero the rack will not be moved when the two Zero keys of the ty ewriter are depressed and the indicating dis rs will display the number 500 through view opening. Should the next numeral to be added be 250, the carriage of the typewriter will be stopped at exactly the same point as in the previous instance so that when the key 2 is de ressed the rack 32 will engage the gear whee 16 and move the indicating disk 13 of the hundreds column through a space corresponding to two units so'that the numeral displayed thereby will be changed from 5 to 7. The carriage will then be moved so that the gear wheel 16. of the disk 13 indicating tens is brought into 006 erative relation with the rack and when t e key 5 is depressed the said indicating disk will be turned to display the numeral 5 through the view opening, the rack remain ing stationary as 'in the-previous instance when the zero key is depressed. The device will then display the numeral 750 through the view opening which is the sum of the two numbers added. Should it be further desired to add the numeral 300 the carriage of the machine is again stopped at the same point as in the previous instance and the required keys de ressed. The rack 52 is then moved upwar ly' and the indicating disk 13 of the hundreds column moved through a s ace corresponding to three units. In so oing however the carrying lever -17 is actuated and the pawl 19 of the said carrying lever caused to move the indicating wheel of the thousands column through a distance corresponding to one unit so as to display the numeral 1 throughthe view opening.

The operation of the zero key of the typewriter does not as previously described actuate the rack, and the numeral 1050 which is the sum of the three numbers added is displayed by the machine. This process can be continued indefinitely and at any desired point upon the carriage since one of the indicating disks is rovided for each space of the typewriter. en it is desired to reset the machine the resetting bar 25 is swung upwardly to move the pawls 19 intoan inoperative position and the plungers 26 are ma nipulated as required to turn the indicating disks until they all display a zero through the view opening. The machine is then again ready for use as soon as the resetting bar 25' has been lowered. It may also be again mentioned that by suitably setting the trips 48 upon the trip bar 47 the limits within which the adding machine attachment will operate can be regulated, the detents 29 being automatically released and the rack 32 moved into an inoperative position as soon as the carriage exceeds the said limits.

Having thus described the invention, what .is claimed as new is: 1

1. In anadding machine, the combination of a support, a carriage movably mounted upon the support, indicating disks .upon he carriage, gear wheels upon the carr age for turning the indicating disks,-'carr '-y'ing levers mounted to be actuated by the gear wheels, pawls connected to the carryingflevers for turning the indicating disk of the next higher denomination, a reciprocating rack inounted upon the support to be brought successively into cooperation with the various gear wheels I as the carriage is moved, and means for operating the reciprocating rack.

2. In an adding machine, the combination of a support, a carriage movably mounted upon the support, indicating disks upon the carriage, gear wheels for turning the mdicating disks, carrying levers mounted to be actuated by the gear wheels, pawls connected to the carrying levers for turning the indicating disk of the next higher denomination, a resetting bar for moving all of the pawls simultaneously into an inoperative position, a reciprocating rack mounted upon the support and adapted to be brought successively into cooperative relation with the various gear wheels as the carriage is moved, and means for actuating the reciprocating rack.

3. In an adding machine, the combination of acasing, a pair of shafts extending across the casing, indicating disks mounted upon one of the shafts, gear wheels mounted upon the opposite shaft for turning the indicating disks, a third sh'aft, arms projecting from the third shaft, carrying levers pivotally mounted upon the arms and adapted to be actuated by the gear wheels, pawls operated by the car rying levers for moving the indicating disk of the next higher denomination, and means for turning the gear wheels.

4. In an adding machine, the combination of a support, a carriage movably mounted upon the support, indicating disks upon the carriage, gear wheels ior'turning the indieating disks, a reciprocating rack mounted upon the support and adapted to be brought successively into cooperative relation with the various gear wheels as the carriage is moved, the teeth of the rack being movable so that thegear wheels are only turned in one direction, and means for moving the rack laterally to throw it either into or out of cooperative relation with the gear wheels.

5. In an adding machine, the combination of indicating means, a reciprocating rack for actuating. the indicating means, the said rack normally assuming an inoperative position, detents for holding the rack in an operative positionymeans for releasing the detents, and means for operating the rack.

6. In an adding machine, the combination of indicating means, a guidebar, a block slidably mounted upon the guide bar, a reciprocating rack for actuating the indicating means, means carried by the block for guiding the reciprocating rack in its movements, means for moving the block upon the guide bar to hold the reciprocating rack either in an operative or an inoperative position, and

means for operating the reciprocating rack. 7. In an adding machine, the combination of indicating means, a guide bar, a block iounted upon the guide bar, a reciprocating rack for actuating the indicating means,

senses means upon the block for guiding the reciproeating rack-in its movements, means for normally moving the block to hold the rack in an inoperative position, detents engaging the block to hold the rack in an operative'positron, means for automatically releasing the detent, and means for operating the rack.

of a support, a carriage slidably mounted upon the support, indicating means upon the carriage, a guide oar upon thesnpport, a block slirlably mounted upon the guide bar, a reciprocating rack for actuating the indieating means, means carried 1 the block for guiding the reci roosting rack in its movements, the said b ock beingmovable'm throw the reciprocating rack either intojan operatwo or an inoperative position, and means for operatingt e reciprocating rack.

9. The combination of a typewriter em bodying a carriage and operating keys, indicating disks mounted upon the carriage of the typewriter, gear Wheels for turning the indicating disks, carrying levers mounted to be actuated by the gear wheels, pawls connected to the carrying levers for turningthe 8. In an adding machine, the combination indicating disk of the next higher denomination, a resetting bar for moving the pawls into an inoperative position, plungers coopcrating with thegear wheels to reset the indicating disks, and means actuated by the typewriter keys for turning the gear wheels.

10. The combination of a typewriter embodying a carriage and operating keys, a casing applied to the carriage of the typewriter, a pair of shafts extending across the casing, indicating disks mounted upon one of the shafts, gear wheels mounted upon the o posite shaft for turning the indicating dis s, a third shaft, arms upon the third shaft, carrying levers pivotally mounted u on the arms and adapted to be actuated the gear wheels, pawls operated by the carrying levers for moving the indicating disk of the next higher denomination, and means actuated by the keys of the typewriter for turning the gear wheels.

11. The combination of a typewriter embodying a carriage and operating keys, a casing applied to the carriage of the typewriter, a pair of shafts extending across the casing, indicating disks mounted u on one of the shafts, a gear wheel rigid wit each of the indicating disks, gear wheels mounted upon the opposite shaft and meshing with the be:

fore mentioned ear wheels, a in projecting from each of the gear wheels up hn the second shaft, carrying levers adapted to'be actuated by the said pins, pawls connected to the carrying levers and engaging the gear wheels upon the indicating disks of the next higher denomination, means for holding the carrying levers normally in o erative position, and means actuated by the eys of the typewriter gear Wheels,

for turning the gear wheels upon the second shaft.

12. The combination of a t ewrr'ter formed Withoperating keys, indicating disks mounted upon the typewriter, gear Wheels for turning the indicating disks, a rack for engaging the gear Wheels, the teeth of the rack being loosely mounted so as to move away from the gear wheels when the rack is moved in one direction, and means actuated by the keys of the typewriter for operating the rack. 13 The combination of a typewriter embodying a carriage and key levers, indicating disks mounted upon the carriage of the type writer, gear wheels for turning the indicati a reciprocating rack for operating the and levers for transmitting mo tion from the key levers of the t ewriter to the rack, the said levers being in crumed atan intermediate oint in the length thereof and the relative engths of the two arms of each lever being proportioned accordi Cr to the movement to be imparted to the ra dk 14. The combination of a typewriter embodying a carriage and key levers, indicating disks mounted upon the carriage of the typewriter, gear wheels for turning the indicating disks, a reciprocating rack upon the frame of the t ewriter, a swinging frame loosely connecte to the reciprocating rack, and levers having an operative connection with the key levers of the typewriter and engaging the swinging frame.

15. The combination of a typewriter embodying a carriage and operating keys, indicating means mounted upon the carriage of the typewriter, a reciprocating rack mounted upon the typewriter frame for actuating the indicating means, the said rack normally assuming an inoperative position, means for holding the rack in an operative position, means actuated by the carriage for releasing the rack, and means for operating the rack through the medium of the typewriter keys.

7 '16. The combination-of a typewriter embodying a carriage and operating keys, indieating means mounted upon the carriage of the typewriter, guide bars carried by the frame of the typewriter, blocks slid'ably mounted upon the guide bars, a reciprocating rack, means carried by the blocks for guiding the rack in its movements, means for moving the blocks to throw the rack into and out of o rative position, and meansactuated b t e typewriter keys for o crating the rack.

17. The combination 0' a typewriter eupbo'dying a carriage and operating keys, indicating means mounted upon the carriage of the typewriter, guide bars carried by the frame of the typewriter, blocks shdably mounted upon the guide bars, a reciprocating rack for actuatim the indicating means, means carried by the blocks for guiding the reciprocating rack in its movements, means for normally moving the blocks to hold the rack in an inoperative osition, detents'engaging the blocks to hol the rack in an operative position, means for automatically releasing the detents when the carriage moves beyond apredetermined point, and'means actuated'by the typewriter keys for operating the rack. V

18. The combination of a typewriter embodying a carriage and operating keys, a tabulator upon the typewriter, indicating means mounted upon the carriage of the typewriter, guide bars carried by the frame of the typewriter, blocks slidably mounted upon the guide bars, a reciprocating rack for actuating the indicating means, means carried by the blocks for guiding the rack in its movements, means tending to hold the rack normally in an inoperative posit-ion, means actuated by the tabulator for automatically moving the blocks to throw the rack into an operative position, and means actuated by the typewriter keys for operating the rack.

19. The combination of a typewriter em-- bodying a carriage and operating keys, a tabulator upon "the typewriter, indicating means ;mounted upon the carriage of the typewriter, guide bars carried by the type- Writer frame, blocks slidably mounted upon the guide bars, a reciprocating rack for actuatin the indicating means, means carriedby the blocks for guiding the rack in its movements, means tending to normally move the blocks in such a position as to hold the rack in an inoperative position, means actuated by the tabulator for automatically moving the blocks to throw the rack into an operative position, detents for holding the blocks in such position, means for automatically releasing the detents when the carriage moves beyond a predetermined point, and

means actuated by the typewriter keys for moving the rack.

20. The combination of a typewriter embodying a carriage and operating keys, indicating-means mounted upon the carriage of the typewriter, a reciprocating rack mounted upon the typewriterframe for actuating the indicating means, detents for holding the reciprocating rack in an operative position, trips adjustably mounted upon the carriage for automatically releasing the detents when the carriage moves beyond a predetermined point, and means actuated by the typewriter keys for operating the rack.

21. The combination of a typewriter embodying a carriage and key levers, indicating disks mounted upon the carriage of the typewriter, gear wheels for turning the indicating disks, a carrying mechanism cooperating .with the indicating disks, a, reciprocating rack mounted upon the typewriter frame for ceases turning the gear Wheels, deten'ts for holding the rack in an operative position, means mounted upon the carriage for automatically releasing the detents when the carriage moves beyond -a predetermined point, a swinging frame having an operative connection with the reciprocating rack, and levers.

fulcrumed at an intermediate point, one end of each of the levers extending under the swinging frame While the opposite end has an operative connection with one of the key levers'of the typewriter, the relative lengths of the two arms of each lever varying according tothe key lever to which the lever is connected." 7 V 22. The combination of a typewriter embodying a carriage and operating keys, a-

tabulator upon the typewriter, indicating disks mounted upon the carriage of the typewriter, gear wheels for turning the indicating disks, a carrying mechanism cooperating with the indicating disks, means for throwing the carrying mechanism into an inoperative position, means for resetting the indicating disks, a reciprocating rack mounted upon the frame of the typewriter for turning the gear Wheels, means actuated by the tabulator for automatically throwing the reciprocating rack into an operative position, and means actuated by the typewriter keys for operat ing the rack. V u

23. The combination of 'a' typewriter embodying a carriage and operating keys, a

frame secured to the back of the typewriter,

a track upon the frame, a casing applied.

to the typewriter carriageand adapted towheels, a third shaft extending across the casing, spring arms projecting from theth'ird shaft, means carried by the spring arms for engaging the indicating disks to prevent accidental movement thereof, and means actuated by the keys of the typewriter for turning the gear wheels. In testimony whereof I affix my signature in presence of two witnesses.

LAWERENOE n. DANIEL. [1,. a] Witnesses:

J. E. MUSTARD,- RALPH CoMEeYs.

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