US1225590A - Adding-machine. - Google Patents

Description

J. L. DALTON. ADDING MACHINE.

APPLICATION FILED FEB. 27, I904- RENEWED NOV- 27, 1916. 1,225,590. Patented May 8,1917.

2 SHEETS-SHEET 1.

J. L. DALTON.

ADDING MACHINE.

APPLICATION FILED FEB. 21, 1904. RENEWED NOV. 27. 1916.

1,225,590. Patented May 8, 1917.

2 SHEETSSHEET 2.

'' QV/LW: AW

' provide a total or adding mechanism for' UNITE STATES PATENT OFFICE. I

' .IAMES I4. DAIITON OF POPLAR BLUFF, MISSOURI, ASSIGNOR, BY MESNE ASSIGNMENTS,

. TO THE DALTON ADDING MACHINE COMPANY, OF CINCINNATI, OHIO, A COBPOBA- TION OF OHIC.

ADDING-MACHINE.

Patented May 8, 191 '7.

Application filed February 27, 1904, Serial No. 195,551. Renewed November 27, 1816. Serial No. 138,818.

To all whom it may concern.

Be it known that I, JAMES L. DmToN, a

citizen of the United States, resident of hereinafter shown, described and claimed.

The general object of this invention is to use in adding machines and the like, comprising two or more sets of independent totalizers, controlled by suitable means whereby either may be moved to position to be operated by devices movable to register or to record predetermined numbers, so that in such a machine both debit and credit accounts or other independent accounts, estimates or items may be carried simultaneously therein, and the various items recorded in their respective columns or colors,

or registered, and added separately in their respective totalizers.

Specifically the-invention is designed for use in connection with that class of machines shown and described in the application of Hubert Hopkins foran adding and" writing machine, whichsaid application was filed January 24, 1903, and numbered serially 140,390, patented September 24, 1912, No. 1,039,130, and the drawings herewith show the invention applied to a machine of that construction for convenience, but it will be readily understood that it may, with me-- chanical modifications, be used in any machine in which gear sectors, racks or attachments are movable coordinately with the register or recorder, and hence by stating the specific object I do not waive or restrict the general scope of the invention, nor the right to use the same in any novel combination This invention relates solely to the adding or totalizer wheels arranged in separate sets or groups and the method of moving either set of'wheels making up the separate totalizers, to operative position, and has nothing to do with the general operation of the machine for registering or recording v purposes, and-in this connection the aim is to enable the operator to carry separate accounts, estimates or items by the use of one register or recorder with a separate and distlnct total for each. As the recording or registerin devices form no part of my invention I wi 1 not describe those elements except such as cooperate with the totalizer.

I Figure 1 is a sectional'view of an adding I machine of the type illustrated in the aforesaid application Serial Number 140,390 (pattented September 24, 1912, No. 1,039,130), showing one form of my invention in comblnation therewith and the totalizer raised into mesh with the operating racks, the lock rod of the lower totalizer being omitted from this view to avoid confusion. Fig. 2 is a side view of the complete invention, all other parts of the machine which are shown in the above mentioned application and patent being omitted. Fig. 3 is a front view of the device.

As may readily be understood by reference to the application and patent mentioned, the type-carriers 1 are movable, and by the cooperation of suitable devices produce records on the platen A,-and the racks 2, after a certain limited advance movement of the typecarriers, move coordinately therewith, and upon backward movement operate the total Wheels to register the-different items therein, producing a total. The movement of the type-carriers 1 and racks 2, toward recording position is limited by suitable devices under the control of the operator, and their forward and backward movement which occurs in operation, is also controlled by the operator. After the carriers 1 have been positioned relative to the platen A the type in the carriers, and the platen are brought into contact, thereby recording the required number. Then the type-carriers 1, and the racks 2, are moved back and operate the totalizer. My invention consists in the arrangement of a plurality of independently operable totalizers or sets of adding wheels, with devices for moving them at different times into connection with the racks, so that when one class of items are recorded they may be added or totalized in one set of wheels and another set of items may be added or totalized in another set, and so on. The various totals may then be recorded independently and in any suitable relation to each paper.

The shaft 3 extends crosswise adjacent to the racks 2 and is upheld by the two supports 4 constituting a pivotally mounted actuating frame, and having cam slots 5 in their upper rear sides, arranged so that,

when the frame is oscillated on its pivots, the shaft 3 will be raised or lowered, depending upon the direction of movement of the frame. Suitable connections are provided for in the invention of Hubert Hopkins and shown and described in the patented application above referred to for oscillating the actuating frame automatically when the racks 2 move backward, but as they form no part of my invention they are not herein shown nor described? The operative position is shown in Fig. 1 wherein the shaft 3 is in the highest, or nearest position to the racks 2. As an incident to the forward movement of the type-carriers and the racks as required to aline the type for printing, the actuating frame 4 is actuated rearwardly to move the adding wheels transversely of their axis'out of engagement with the racks, so that said wheels are not operated during forward movement of the racks, and this disengagement is effected rior to any forward movement of the rac s. been recorded the type-carriers and racks are moved rearwardly to their starting'points, and prior to any rearward movement of the racks'the actuating frame 4 is operated to move the selected group of adding wheels transversely of their axis into engagement with the racks so that said selected group of wheels will be operated in adding and also in transferring or carrying operations by the racks in order to add the numbers recorded by successive operations of the racks. The links 6 which are connected to the shaft 3 hold said shaft from forward and backward movement and permit it to be raised and lowered by operation of the actuating frame in order to engage and disengage the selected group of wheels respectively with the racks.

The foregoing describes briefly the operation of the machine of the Hopkins Patent, No. 1,039,130, whereby the adding wheels are moved into and out engagement with the actuating racks by operation of the actuating frame 4, and from this description it will be understood that the adding wheels are disengaged from the racks as an incident to forward movement of the racks and prior to any such movement and are engaged with the racks automatically prior to rearward 'movement of the racks.

pawl levers 12 just the same as in the machine shown in the above application. During forward movement of the racks the shaft Afterthe number has- 3 is in the lower ends of the slots 5 and the said shaft is held against rotation by a pinion 13 on one end thereof meshing with a rack 14. Said rack 14 is movable backward and forward on rollers 15, supported by posts 16 and 17. The post 17 has a hook 18 on its upper end.

I may mount the various groups of wheels on a single shaft, and by some suitable meansthe'wheels 9 as shown in Figs. 2 and 3 thereby maintaining perfect alinement, and lock- 1 ing them against accidental rotation. The lower or idle set is always locked until thrown around to operative position. One

arm of each pair of arms 19 carries a projection 22 and the one for the upper set of wheels when the shaft 3 is raised vertically by oscillating the frame 4, engages the hook 18 during the movement of the shaft 3 upward, and said hook 18 being stationary holds the said arm 19 which draws the. rod 20 out of engagement with the teeth of the wheels 9 before the latter engage the racks 2. This occurs just before said racks start backward so that the wheels can be operated thereby. The upward actuating'tendency of the springs 21 will prevent the backward travel of the racks 2 from turning the shaft 3 and unmeshing the wheels 9, when all the racks 2 are operated; when only part .of the racks are operated, the idle or stationary ones hold the parts in position.

The rack 14 is pivoted at its front end to a link 23 to which is connected a link 24 connected at its front end to an operating lever 25 arranged conveniently in the key board. These parts are actuated forward by a spring '26 preferably connected to the link 23 and to some stationary part of the machine as shown. When the totalizers are lowered by oscillation of the frame 4, the pinion 13 meshes with the rack 14 as aforesaid, as clearly shown in Fig. 2. Then, if it is so desired the shaft 3 can be revolved, the wheels 9 being unmeshed from the racks 2, and such revolving of the shaft will reverse the positions of the two sets of total wheels: That is the upper set will be in the position formerly occupied by the lower set-below the shaft 3, and the lower set assumes the position formerly occupied by the upper set. This is accomplished by pushing the lever 25 backward in opposition to the spring 26*, and thereby the rack 14 which as stated meshes with the pinion 13. This movement revolves the shaft v3, and owing to the depressed position of the shaft and the arms 19, the shoulders 22 on the latter will freely pass without engagement with the hook 18 as may be seen by reference to Fi 2. A pawl 26 is pivoted on the end of t 1e shaft 3 and a projection 27 on the rack 4 raises said pawl slightly during backward movement of the rack. After the projection 27 passes beyond the pawl 26 and the lever 25 is released the spring 26 draws theparts to the position shown in Fig. 2 in which the projection 27 is held against the end of the pawl, thus preventing further manipulation of the lever 25 and the train of connections therefrom including the rack 14, until the actuating frame 4 is operated in the usual manner to raise the selected group of adding Wheels into mesh with the racks which oc- 'curs automatically and prior to rearward movement of the-racks after a number has been recorded. By use of my improved totalizing mechanism credit and debit totals, or other totals may be carried simultaneously in the machine and printed (as described for printing totals in the heretofore mentioned Hopkins Patent No. 1,039,130) in any'desired position or relation to each other upon the same or different sheets of paper. The carrying, recording and'platen devices, form no part of my invention, and are omitted from illustration, and description, being fully shown and described in the'appllcation filed by said Hopkins, and patented Sept. 24, 1912, No. 1,039,130.

I claim: 1. In an adding machine, the combination'with movable racks, of a shaft, a group of adding wheels on said shaft, automatic means for moving the shaft and thereby the wheels toward the racks when necessary to add, two arms pivotedto said shaft, a

. lock-rod supported by said arms between moving said positioning frame to carry any I selected group of adding wheels to and from position to beengaged with the recording mechanism by operation of the actuating frame, and an actuating frame supporting said positioning frame for moving the same as required to engage the selected group of adding wheels with the recording mechanism.

3. The combination with the recording mechanism in an adding machine, of a positioning frame, a plurality of separate groups of adding wheels carried by said positioning frame, a locking mechanism for each grou of wheels, manual means for moving said positioning frame to carry any selected group of total wheels to and from position to be engaged with the recording mechanism by operation of the actuating frame, an actuating frame supporting said positioning frame for moving the same as required to engage the selected group of adding wheels with the recording mechanism, and automatic means for releasing the locking mechanism from any group of adding wheels that is moved into engagement with the recording mechanism, as aforesaid.

4. In an adding machine the combination with the sectors 2, of the wheels 9 operable thereby to add, means for movingthe wheels into and out of engagement with the said sectors, the arms 19, the rod 20 carried by said arms 19, means for holding said rod 20 between the teeth on the wheels 9 when the said wheels are out of engagement with the sectors 2, and means for holding the said rod away from the said wheels when the latter are in engagement with the sectors 2, substantially as specified.

5. In an adding machine, a series of actuators, a plurality of sets of adding wheels arranged to contain separate numbers simultaneously, a separate lock for looking all of the wheels in each set, manually controlled means for positioning any selected set of wheels in alinement with said actuators for operation thereby, automatic means for moving any selected set of wheels into engagement with the actuators after the selected set has been placed in alinement with said actuators as aforesaid, and a device for positively disengaging all of said looks from the selected sets of wheels respectively as an incident to the movement of said selected sets of wheels intoengagement with said actuators.

6. In an adding machine, a plurality of groups of adding wheels arranged to contain separate numbers simultaneously, actuators for said wheels, a positioning frame supporting said wheels, manually controlled means for moving said positioning frame to place any selected set of wheels in position to be engaged with said actuators, a lock for each group of wheels preventing relative movement of said wheels when out of engagement with said actuators, a device con trolling the movement of said frame to engage the selected groups of wheels with said actuators, and a device for disengaging the look from the selected group of wheels as an incident to the movement of that group into engagement with the actuators.

7. In an adding machine, a series of actuators arranged in numerical orders, a plurality of separate groups of adding wheels,

a positioning frame supporting said groups of adding wheels so that all of the wheels of each group are permanently in the same numerical orders with said actuators and with the wheels of the other group, a device for operating said positioning frame to place any selected group in position to be moved into engagement with said actuators, a releasable locking device for each group of wheels to prevent relative movement thereof when out of engagement with said actuators, a frame operating automatically to move the selected group of wheels into engagement with said actuators, and a device for disengaging the lock from the selected group of Wheels automatically and as an incident to the movement thereof into engagement with said actuators.

8. In an adding machine, a series of actuators arranged in numerical orders, a positioning frame, separate groups of adding wheels mounted in said positioning frame, optionally operable means for moving said positioning frame to place any selected group of adding wheels in position to be engaged with said actuators, locking devices engaging said wheels to prevent relative movement thereof when disengaged from said wheels, an additional frame arranged to operate automatically to move the selected group of wheels into engagement with said actuators for adding operations, and a device for disengaging the locking device from the selected group of adding wheels as an incident to the movement of said Wheels toward said actuators after said'wheels have been positioned by said positioning frame.

9. In an, adding machine, a series of racks arranged in numerical orders, separate series of adding wheels adapted to be moved into and out of engagement with said racks,

.a positioning frame supporting said series of adding wheels, optionally operable means for moving said positioning frame to place any selected series of adding wheels in position to be moved into engagement with said racks, an actuating frame for moving the selected series of adding wheels into enga ement with the racks, a releasable locking evice engaging each series of adding wheels, springs for holding said locks in engagement with the adding wheels, and a device for disengaging said looks from said wheels as an incident to the movement of said wheels by said actuating frame into engagement with said racks.

10. In an adding machine, a series of total wheels, a pivoted support in which said wheels are mounted, a rod carried by said pivoted support and extending across said wheels, a spring for holding said rod in engagement with the Wheels when the wheels are'out of operative position, means for moving said wheels to operative position, and a device mounted independently of said pivoted support for disengaging said rod from said wheels as an incident wheels, means for moving said Wheels toplace any selected group thereof in position to be engaged with said actuators, an independently releasable lock device engagmg each group of adding wheels, means for supporting'and holding said lock device in engagement with said wheels during the movement of said wheels to and from position to be engaged with said actuators, an automatic device controlling theengagement of the selected group of wheels with the actuators, and a member for disengaging the lock from the selected group of wheels as an incident to the movement of that group from the position in which it had been placed for engagement with said actuators, as aforesaid, into engagement therewith.

12. In an adding machine, the combination of a series of movable actuating racks, a plurality of independent groups of adding wheels adapted to be operated by said racks, a positioning frame supporting said adding wheel's, manually operative means for moving said positioning frame to place any selected group of adding wheels in alinement with said racks in position to be moved into engagement with said racks, automatic means for controlling the movement of the selected group of adding wheels into engagement with said racks when the latter operate, an element carried by said positioning frame for engaging each group of adding wheelsto prevent them from relative movement when out of engagement with said racks, and a device for holding said element out of engagement with each group of wheels as an incident to the movement of the corresponding group of wheels into engagement with said racks by said automatic means after operation of said I positionmg frame.

13. In an adding machine, the combination of'a shaft, two arms attached to said shaft, two adding wheel shafts carried by said arms, a group of adding Wheels on each of said wheel shafts, a pinion on said first-mentioned shaft, a rack adapted to mesh with said pinion, means for actuating said rack to rotate the shaft on which said pinion is mounted, a latch device for each of said groups of adding wheels, means for moving said groups of adding wheels selectively to operative position, and automoving said groups of adding wheels to place any selected group thereof in position to be moved into mesh with said racks when the shaft 3 is moved by the swinging support, an independently releasable device for locking each group of adding wheels when said wheels are out of mesh with said racks, and a member in position to release said device from said groups of wheels respectively as an incident to the movement of said wheels by said swinging frame to mesh said wheels with said racks.

15. The combination with the recording mechanism in an adding machine, of a plurality of separate groups of adding wheels, a positioning frame in which said wheels are mounted, means for moving said positioning frame to place said groups selectively for operation, locking mechanism carried by said positioning frame and arranged to engage said wheels when not in cooperative relation with the recording mechanism and to disengage from any group when that group is moved to co- 1 operate with the recording mechanism, and

an actuating frame operating as an incident to the operation of said recording mechanism first to unlock the selected group of adding wheels and then to engage said group of adding wheels operatively with the recording mechanism.

16. In a calculating machine, actuating devices, revoluble totalizers, swinging bails 'for locking the wheels of said totalizers against rotation when out of engagement with their actuating devices, springs holding said bails releasably in engagement with said wheels, and means for operating one of said bails to unlock the wheels of one of said totalizers when they are engaged with 'their actuating devices.

17. In a calculating machine, actuating devices, revoluble totalizers, swinging bails for locking the wheels of said totalizers against rotation when out of engagement with their actuating devices, and means for operating one of said bails to unlock the wheels of one said totalizers when they are engaged with their actuating devices.

18. In a calculating machine, actuating devices, revoluble totalizers, a swingin frame in which totalizers are mounte means for actuating said frame so as to adding operations by the movement of said racks, swinging bails for said groups of adding wheels respectively for locking them against rotation when out of cooperative relation to said racks, means for moving a selected group of adding wheels into cooperative relation tosaid racks, and a device for disengaging the swinging bail from the selected group of wheels when that group is moved into cooperative relation with said racks, as aforesaid.

20. The combination of a series of racks arranged in numerical orders, a series of adding wheels arranged in the same numerical orders with the racks, an additional series of adding wheels arranged in the same numerical orders with the first-mentioned series and with the racks, means for selectively positioning either of said series of adding wheels for operation by the.

racks, automatic means for moving the selected series of adding wheels into engagement with the racks for adding operations and for disengaging and holding said wheels out of engagement with said racks while the racks are stationary, a swinging bail for each series of adding wheels for engaging and holding said wheels from accidental rotation While said wheels are out of engagement with the racks, springs for holding said bails in engagement with said series of adding wheels respectively, and a device for disengaging said bails from the selected series of adding wheels as an incident to the movement of said wheels into engagement with the racks.

21. The combination of a series of racks arranged in numerical orders, a series of adding wheels arranged in the same numerical orders with the racks, mechanism for operating the racks in adding and transferring operations, mechanism for holding the adding wheels in mesh with the racks during operation of the racks in adding and transferring operations, a revoluble rod between the teeth on said wheels when said wheels are out of mesh with said racks,

a device for disengaging said rod from said wheels, and a swinging frame supporting said shaft and said wheels, and operable to move said wheels into and out of engagement with said racks.-

22. The combination of a series of racks arranged in numerical orders, a series of wheels also arranged in numerical orders and movable into and out of engagement with said racks, a pivoted frame supporting said wheels and operable to move said wheels into and out of engagement with said racks, manipulative mechanism for moving said wheels to different adjustments in 'one of which they cannot be engaged with said racks by movement of said frame, and a lock device engaging and accompanying said wheels in their movements by said manipulative mechanism.

28. The combination of a series of racks arran ed in numerical orders, plural series 1 of ad ing wheels movable selectively to operative position with respect to said racks, mechanism for moving said series of adding wheels selectively to and from operative position with respect to said racks, an independently releasable device engaging each series 0 wheels and accompanying said wheels in their movements to and from operative position, and means for releasing said devices -from said Wheels as an incidentto the movement of said wheels into mesh with said racks.

24. The combination of a series of racks arranged in numerical orders, plural series of adding wheels, mechanism for moving said series selectively to and from position from which they may be moved into enga ement with said racks, automatic means or moving the wheels from the position aforesaid into engagement with said racks as an incident to the operation of said racks, a device for holding each series of wheels in properv alinement when disengaged from said racks, means for disengaglng said device from said wheels as an incident to the movement of said wheels from that position in which they may be moved into engagement with said racks to engaging posltion, and means for holding said device in engagement with said wheels when said wheels move out of that position from which they may be moved into engagement with said racks. r

25. In an adding machine, the combination of a series of racks, plural groups of adding wheels arranged to be operated in adding and transferring operations through the movement of said racks, means for moving said roupspf wheels selectively into and out o a position from which they may be moved into engagement with said racks,

\ selected grou means for lockin each group of wheels against rotation w en in that position from which they may be moved into engagement with said racks, and means for moving the of wheels into engagement with said rac (s and disengaging said lock- 1 ment the wheels of each grou ing means from said wheels as an incident to such movement. 1

26. In an adding machine, the combination of a series of racks, plural groups of adding wheels arranged to be operated in adding and transferring operations through the movement of said racks, means for selectively moving said groups alternately to the same position from which they may be moved into engagement with said racks, and a device for preventin operation of said last-mentioned means w en in one position.

27. In an adding machine, actuating devices, separate groups of adding wheels each comprislng a series of wheels arranged in numerical orders, means for moving the groups of adding wheels selectively to position in alinement with but out of engagement with said actuating devices, a device for holding in alinement the wheels of each group during the entire time that they are out of engagement with the actuating devices includlng the time that said wheels are in alinement with said actuatin devices, an element for engaging said device to disengage the same from said wheels as an incident to the movement of said wheels into engagement with said actuating devices, and means for holding said device in position to be'reengag'ed by said wheels automatically when said wheels move out of engagement with said actuating devices.

28. In an adding machine, actuatin devices, separate groups of adding w eels, means for moving the groups of adding, wheels selectively to position in alinement with but out of engagement with said actuating devices, a device for holdin in alineuring the entire time that they are out o engagement with the actuating devices, including the time that said wheels are in alinement with said actuating devices, a swinging frame for engaging the selected groups of adding wheels respectivel with said actuating devices, an element or disengaging said holding device from said wheelsvas an incident to the movement of said wheels into engagement with said actuating devices by' said swinging frame, and means for causing reengagement of said holding device and said wheels automatically when said wheels move out of engagement with said actuating dcvioes.

29. In an adding machine, the combina- '120 tion of a single series of actuating racks, a plurality of groups of adding wheels arran ed to beoperated in adding and transferr-m operations through the movement of sai racks, a device for locking the wheels of said 'wheels transversely of their axis 13( into engagement with said racks for both adding and transferrin operations by said racks, and means for disengaging the looking device from the selected group of wheels as an incident to the operation of said pivotally mounted supports moving said wheels transversely of their axis into engagement With said racks, as aforesaid. v

30. In an adding machine, the combination of a single set of differentially movable denominational actuating racks, means for operating said racks in adding and also in carrying operations,'plural groups of adding wheels for adding numbers through the movement of said racks, a pivoted frame holding one of said groups of wheels normally in engagement with said racks and operable to move said wheels bodily transverselylof their axis out of engagement with said racks as an incident to the movement of said racks in one direction, a device controlled by the position of said pivoted frame for locking the wheel of each group in any position thereof when said Wheels are out of engagement with the racks, means for moving the selected group of wheels transversely of their axis into engagement with the racks, and means for disengaging said device "from said wheels as an incident to the movement of said Wheels transversely of their axis into engagement with said racks, as aforesaid.

314 In an adding machine, the combination of a single series of actuating racks, a plurality of groups of adding wheels arranged to be operated both in adding and transferring operations through the move,- ment of said racks, actuating means operable to move any selected group of said wheels transversely of their axis into engagement with said racks for both adding and transferring operations-by said racks as'an incident to movement of said racks in onedirection, a device for engaging the wheels of each group in any position of said wheels when out of engagement with said racks, means for disengaging said device from the selected group of wheels as an incident to the operation of said actuating means moving said wheels transversely of their axis into engagement with said racks as aforesaid, and means for effecting reengagement of said device and said wheels as an incident to the operation of said actuating means to disengage the selected group of wheels from said racks. V

/ 32. In an adding machine, the combination of a single series of actuating racks, a

plurality of groups of adding wheels arranged to be operated both in adding and transferring operations through the movement of said racks, means operating automatically as an incident to movement of said racks in one direction for disengaging said Wheels and racks, and operating automatically as an incidenttomovement of said racks in the opposite direction to engage a selected group of said wheels with said racks, a

swinging bail supported in position to engage said wheels in any position thereof when out of engagement with said racks, and means for preventing movement of said bail and to disengage the hail from the wheels as an incident to movement of the wheels transversely of their axis toward said racks;

33. In an adding machine, the combina tion of a series of type-carriers, racks, connections between-said racks and said typecarriers, whereby said racks will be moved to position to be operated in adding operag tions and enabling said racks to move independently of said type-carriers in transferring operations, plural groups of adding wheels arranged to be operated in adding and transferring operations by the movement of said racks as aforesaid, an element for locking each group of adding wheels when out of cooperative relation to said racks, devices for supporting and holdingv each of said elements, and means for moving any selected group of adding wheels transversely of their axes out of engagement with said element and into cooperative relation to said racks.

84. In an adding machine, the combination of a series of racks, type-carriers operable to position said racks for adding operations, connections between said racks and type-carriers enabling said racks to move independently of the type-carriers in transferring operations, plural groups of adding wheels arranged to be operated in adding and transferring operations by the movement of said racks, and element for locking each group of adding wheels when out of cooperative relation to said racks, means for moving a selected group of adding Wheels transversely of its axis into cooperative relation to said racks and as an incident thereto disengaging said selected group of adding wheels from said element, and supporting arms supporting said element when in or out of engagement with said adding wheels.

35. In an adding machine, the combination of a series of racks, plural groups of adding wheels arranged to be operated 'in adding and transferring operations by the movement of said racks, locking means for said groups of adding wheels respectively, J for locking them against rotation when out 120 of cooperative relation to said racks, means tion with a single series of actuating racks, 139

' said racks, a device for locking the wheels of each group against rotation in any position of said wheels when out of engagement with said racks, pivotally mounted supports for said groups of adding wheels, means for actuating said supports to move a selected group of adding wheels transversely of its axis into engagement With said racks for both adding and transferring operations by said racks and as an incident to such transverse movement disengaging said adding wheels from their locking device.

37; The combination in an adding machine, of a series of racks, a member holding said racks in idle position, a rock shaft, connections from said rock shaft for moving said member to permit simultaneous differential operation of the racks, plural groups of adding wheels for selective cooperation with the racks, means cooperating with each group of adding Wheels to lock them positively against rotation when out of engagement with'the racks, a device for selectively determining which of said groups of adding wheels may be operated, automatic means for moving said selected group of adding wheels transversely of their axes into engagcment with said racks and out of engagement'with the locking means, whereby the racks will actuate the adding wheels difler- Office.

[SEAL] Corrections in Letters Patent No; 1,225,590

and transferrin entially in one direction, manipulativemeans for changing the periods of engagement and disengagement of said adding wheels and racks to enable the latter to actuate the former in the opposite direction, thereby restoring said adding wheels to zero, and automatic means operable to print a total represented in said adding wheels as an incident of the restoring'thereof to zero.

38. In an adding machine, the combination of a series of racks, plural groups of adding wheels arranged to be operated in adding operations by the movement of said rac (s, supports for supporting and moving said adding wheels into and out of engagement with said racks, locking means for said groups of adding wheels respectively for locking them against rotation when out of cooperative relation to said racks, means for selectively determining which group of adding wheels may be operated, and mechanism for positively moving said supports to move the selected group of adding wheels transversely of its axis out of engagement with said locking means and, as an incident thereto, engaging said wheels with said racks.

In testimony whereof I hereto aflix my signature in the presence of two witnesses. JAMES L. DALTON. [L.S.] WVitnesses:

J. D. RIPPEY, W. M. ROBERTS.

, Signed and-sealed this 2d day of October, A. D. 1917 F. W. H. CLAY,

Acting Commissioner of Patents.

It is hereby certified that in Letters Patent N 0. 1,225,590 granted May 8 1917 upon the application of James L. Dalton, of Poplar Bluff, Missouri, for an im rove ment in Adding-Machines,errors appear requiring correction as follows in the drawings, Sheet 1, Fig. 1, insert the reference-letter A and a lead line to indicate the platen; page 7, line 104, claim 34, of the printed specificatiomtfor the word 2 d z Ll'l re rd an, and that the said Letters Patent should be read with these correc lOIlS therein that the same-may conform to the record of the case in the Patent

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