US899983A

US899983A - Adding-machine.

Info

Publication number: US899983A
Application number: US17477903A
Authority: US
Inventors: William Smith Horry
Original assignee: Burroughs Adding Machine Co
Current assignee: Unisys Corp
Priority date: 1903-09-26
Filing date: 1903-09-26
Publication date: 1908-09-29
Anticipated expiration: 1925-09-29

Description

W. s. HURRY. ADDING MACHINE. APPLIOATION FILED SEPT. 26, 1903.

Patented Sept. 29, 1908..

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WILLIAM SMITHHQRRY, OF NIAGARA FALLS, NEW roan, risers-Non, BY MESNE ASSIGN- MEN'rs, 'ro-n'unnouens ADDING MACHINE COMPANY, or DETROIT, MlGI-IIGAN, A

OORPOBATIQN or MICHIGAN.

" Be'fit known that I, Wrttmn SMITH IIQnItY, a subject of King Edward of Great Britain, residing at- Niagara Falls,'in' the county of Niagara and State of New York,

have invented certain new and useful Improvements 1n Add1ngl\Iach1nes, of which the following is a specification.

My invention relates to electric operating devices for adding machines and the like, and

has forits object the production of novel and vmore efficient means for this purpose than have been heretofore devised, all as hereinafter morc fully explained and particularly pointed out in my claims.

In the accompanying drawings--Figure 1 v is a perspective view of one form of .my attachment applied to an adding machine; Fig. 1, is a view of the mechanism for returning the actuating shaft of the machine to its normal position after it has been operated by the motor. Fig. 2 is an enlarged detail view of a form of contact device which may be employed with the device illustrated in Fig. 1; Fig. 3 is a diagrammatic representation of a modified form of circuit; Fig.- 4 shows a modified construction of circuit breaker; and Fig. 5 shows a twisting magnet which may be-substituted for the motor as a means for actuating the shaft of the adding machine.

The same reference numerals are employed to indicate corresponding parts in the several views.

In Fig; 1 of the accompanying drawing I have illustrated :my invention as a plied to a familiar type of adding machine nown as the Burroughs machine, such machine com prising an adding mechanism and a printing mechanism controlled and operated by a,

amount of the item to be added and printed and then pulling forward the operating'lever to its limit of movement and releasing it, suitable resetting springs within the nachine,

as illustrated in Fig. 1* serving to restore it and the parts moved by it to normal position.

The main operating shaft of the machine, i

through which power is transmitted to the is a rock adding aml printing mechanisms,

to be shaft 2*, and where the machine is ADDING-MACHINE.

Patented Sept. 29, 1908.

g manually 0 erated by means of the handlever 2 sum lever is secured to this shaft. W here the machine is to be operated by my novel electric operating devices, however, the hand lever will preferably be omitted, although I l ave shown it present in Fig. 1 for the purposes of the foregoing explanation. Under my invention the power for operating' the machine is supplied by an electric motor 4 suitably geared or otherwise connected with the operating shaft 2 of the machine, in the present instance by means of a gear 5 fast upon said shaft and meshing with a pinion 6 fast upon the'end of the motor shaft. ,The motor 4 (of rotary or constant torque type), is located in an electric circuit A B adapted to 'be supplied with current from any suitable source. This motor circuit is provided with two breaks or points of opening, one controlled by amanually operated circuit closer or switch at 3, and the other controlled by a circuit-breaker or switch 8 arranged to be automatically oper ated by the motor. In the present instance the switch 8 is normally closed and the switch 3 normally open. Upon closing the switch 3 by hand current will fiow through the motor circuit and actuate the motor, and when the motor shaft has made approximately one revolution in the direction of the arrow in Fig. 1 an arm 7 fast upon and insulated from it, adjacent the switch 8, will contact with the latter and swing it forward, and thereby open the circuit and stop the" flow of current. i The relativesizes of the gear 5 and pinion 6 are such that the revolution of the motor shaft just described will serve to turn the operating shaft 2 of the machine forward to its limit of movement, and when the circuit is automatically opened at the switch 8, at the end of such revolution of the motor shaft, the resetting springs 14 within the machine, as illustrated in Fig. 1 which have been put under tension by the forward movement given the operating shaft, will return all the parts, including the mot-or shaft, to normal position. As the motor shaft approaches such osition (moving in a direction opposite that indicated by the arrow in Fig. 1), its arm 7 will contact with the forward side oi" the switch 8 and swing the latter. backward to normal position, thereby again closing the motor circuit at this point. If the circuit l has been held closed at the switch 3, and con tinues to be afterthe motor shaft has returned to normal position and again closed the circuit at the switch 8, the motor will be instantly renergized and the operation repeated; while if the circuit has been opened at the switch 3 during the return movement of the parts the closingof the switch 8 will have no effect u on the motor and it will remain at rest unt' the switch 3 is again closed.

The manual circuit-closer or switch at 3 may be of any suitable construction, but in the resent instance I have selfockin magnetic switch, of such construction t at when the switch is closed and the current thereby permitted to flow throu h the circuit, the switch will be-magnetica ly held in closed position until the aircuit is opened at the swltch 8, whereupon the cessation'of'fiow of current will release the magnetic switch and permit it to open. The details of the particular form of magnetic switch which I have provided in the present instance are illustrated in Fig. 2, where the contact terminals of the circuit, indicated at- 12 and 13, are adapted to be closed together by depression of the movable member or spring arm 9 of the switch, which is provided with a push-button 9 for the purpose. Located beneath the movable member 9 of the switch is an electro-magnet 10, whose coils are included in the motor circuit. When the spring arm 9 is depressed to close said circuit at the contacts 12 13, and the current thereby permitted to flow through the-circuit and coils of the magnet 10, the pole-piece 11 of the core of the magnet will attract the spring arm 9 and hold it in depressed position, with the circuit closed at the

contacts

12, 13, so long as current continues to flow. When the circuit is opened at the switch 8, in the manner heretofore described, the cessation of v fiow of current will denergize the magnet shaft has completed and opened the switch at the other break in 10 and release the arm 9, which will then s ring upward to normal position and open the circuit at the

contacts

12, 13.

As will be understood from the foregoing, with the provision of my self-locking ma netic switch 3, it is simply necessary to touch the push-button 9 and close -the switch,

whereupon the motorwill be set in operation and the switch be held closed until the motor its positive movement the circuit, thereby rendering it unnecessary to either manually hold the switch 3 closed 'durin the operation of the machine, or to rovi e mec anical means, in the form of atches and the like, for so doing.

In adding machines of the character described, it is frequently desirable to add and list or print the same amount several times in succession, to which end machines of this character are provided with what is termed a repeating key, indicated at'C in Fig. 1; When the numbered keys representing any provided a novel given amount are depressed and this repeating key then depressed, and held or latched in its lower position, the numbered keys will not be released and restored to normal position at the end of each 0 eration of the machine, so that by pul 'ng the operatin handle forward and releasing it a number 0 times in succession the amount re resented by the depressed he smay be a ded and rinted ,a correspon ing number of times. lily novel electric operating device lends itself to'this repeating'operation to great advantage, since after setting the proper numbered keys and the repeating key it is sim ly necessary to depress the push-button of t e switch 3 and hold it depressed until the machine has been 'ven the desired number of o erations by the motor, it being understood that under such circumstances the motor shaft will make cne revolution and its arm 7 open the switch -8, whereupon it will be returned tonormal position by the resetting springs within the machine, and upon reachin such position its arm 7 will automatica y closethe-switch 8 again, whereupon, the circuit bein maintained closed at the manually-operated switch 3, the motor, will be immediately renergized and the operation re eated so long as the switch 3 is 'held close It is not essential that the self-locking magnetic switch shall formpart of or be immediately associated withthe manual circuitcioser, as in the construction illustrated in Figs. 1 and 2. On the contrary, it may be located at any point in the circuit and the push-button be employed simply as a circuitcloser to initially close the circuit, where upon the magnetic switch will be energized to close the circuit at another point and maintain it closed until the circuit is automatically o ened by the motor at the switch 8 or such ot er switch as may be substituted for the latter. Thus in Fig. 3 I have illustrated a modified form of the device in which a button 9 is mounted upon the adding machine in convenient proximity to its keys, all other portions of the mechanism being placed at any convenient distance therefrom. In this case the movable core 11 of thesolenoid 10 acts upon the momentaryclosing of the circuit through the button or key 9 to movethe lever between the

mercury cup contacts

12, 13, and through the field 4 of the motor 4 and the circuit breaker 8. The operation then takes place as above described with reference toFigs. 1 and 2.

As will be understood from the foregoing description'of Fig. 3, the solenoid 10 and its core 11, together with the lever 9 o erated by said core and cooperating with t e'contact's '12, 13, constitute a magnetic switch which operates to close a branch line across the motor circuit A B in'shunt of or multi- 9 into position to close the circuit 4 'ple with the push button 9 so that when the circuit is closed through such branch the positionrof the switch 9 becomes immatei opened at the switch 8, however, the-solenoid art.

magnet is denergized and the weight of its core swlngs the opposite end of the lever 9 upward and opens the motor circuit at the

contacts

12, 13,

The circuit breaker 8 as above illustrated may comprise merely a double pole switch or various other forms oi construction may be used, as will be obvious to those skilled inthe For instance, I have shown in Fig. 4 a form of circuit breaker in which contact is made between an insulated arm 7 secured to the armature shaft and a conductive strip 8 while the former is moving through an arc 'correspondingto the required twist of the shaft of the adding machine, say 63.

The initial position of the arm 7? is indicated in full lines at P and its final position in dotted lines at P. It will be noticed that the arma turehas broken its own circuit at the breaker in'moving from I to P, so that. it moves no more. Also, the circuit being broken, the

core 11 is released and the circuit is thus broken at the contacts 12, 13.- as well,-a double .breakj In returning, which it instantly does on the breaking of the circuit,

impelled by the springs of the adding machine acting through vthe shaft, the contact is again made at the circuit breaker 8., but remains broken at the butt-on,contacts'li 13.

If then the. button is pressed for an instantone reciprocatory motion of the. shaft is made. It will be obvious that in this case the armature shaft may be directly connected to the printing and spacing shaft of the adding machine.

A suitable motor powerful enough to op erate the machine canbe procured for any kind of current used -for electric lighting, so that the precisemotor to do the work is immaterial to the practice of my invention. It is not even necessaryto employ a motor but I may use instead a twisting magnet as' indicated in Fig. 5. This twisting magnet comprises a field I and an amature A andis rei erable in some respects to the motor, heing adapted lior use with either direct or alternating currents. Upon establishing the current through the field of the magnet the armature A, which may be attached or geared tothe shaft of the adding machine, is turned 'through an angle of about 90, thereby operating said shaft, The circuit being broken at-the proper pointthrough a circuit breaker operated or controlled by the magnet, the several parts return instantly to their original positions. Inasmuch as the motor or magnet acquires considerable momentum in its travel,

and as this momentum increases with the speedof the operation, itis desirable that some means he provided for preventing the motor from inflicting a blow upon the adding .machine at the-end of its forward stroke. This may be accomplished in many ways, as, for instance, by such construction that the circuit is broken earlier than would otherwise be n'ecessary, so that the momentum is absorbed by the time the travel is com leted. One such construction is illustrated in ig. l,

in which the circuit breaker 8 is adapted to.

be opened slightly in advance of the completion of one revolution of the armature shaft. A somewhat earlier opening of the circuit may be provided for by a suitable lug upon the arm 7, or by a proper extension of the contacting portion 0 the circuit breaker, as indicated in dotted lines on Fig. 1. Similarly in the modification shown in Fig. '4 it is sometimes desirable to make the conductive strip 8 of such length that the arm 7 is in contact therewith during somewhat less than its total travel, as will be readily understood. I may )rovide a spring connection between the she-it of the adding machineand the motor or magnet'so that the jolting effect may be completely obviated. With these presatisfactory. While the details 0' the construction of the adding machine illustrated in the drawin s form no part of my invention, reference may be hadior an understanding of them to Letters Patent of the United States No. 504,963 and No. 505,078, to William S. Burroughs, and No. 595,864, to William H. Pike, Jr.

I claim:

1. In. electric operating means for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closing the circuit to energize the motor, and means for automatically opening the circuit at the .end of the operating movement of the machine, and closing it to render it responsive to said manually operated means at the-end ofthe return movement of ,the machine; substantially as described.

2. In electric operating means for adding machines and the like, a motor circuit, a

motor in said circuit ,for operating the mamachines and the like, a motor circuit, a

motor in'said 'cir'cuitfor operating the mai end of the return movement of the machine; 10.

' motor in said circuit for operating the ma chine, manually operated mears for closing i of the operating movement ofthe machine,

' chnie, manually operated means fol-closing the motor for opening the circuit at another machines and the like,

, chine, and

0* no, manually operated means for closing t 2 circuit to energize the motor,i'means op I .ated by the motor for openingthe' circuit at the end of the operating movementfofthe. machine, and spring operated means for automatically rendering said circuit respon I sive to said manually operated means at the substantially as described.

- 4. In electric operating means for adding: machines and the like, a motor circu1t,.a-

the circuit to energize the motor, and means operated by the armatureof the motor for automatically opening the circuit at the'end and closing it torender it responsive to said manually operated means at theend of the return movement of the machine,':substantially as described.

5. In electric operating means for adding I a motor circuit,'a motor in said circuit for operating the machine, manually operated means for closing the circuit at one point, and means for auto: matically opening and closing the circuit at another point, said opening and closing means 0 crating to open the circuit atthe end of't e operating movement of the mato close the circuit, to render it responsive to said manually operated means, at the end of the return movement of the machine; substantially as described. p

6, In electric operating means for-adding machines and the like, a motor circuit, ia motor in said circuit for operatin g the mathe circuit at one point, means operated by the motor for opening the circuit at another oint, and means independent of said motor or automatically closing the circuit again at the latter point substantially as described. 7. In electric operating means for adding machines and the like, motor in said circuit for chine, manually operated the circuit at one point,

operating the mameans for closin means operated by point, and spring-o erated'means for automatically closing t e circuit again at the latter point; substantially as describ'edi 8. In electric operating means for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closin the circuit at one point, and means operated by the armature of the 'notor for automatically opening and'closi ng, the circuit at an-- other point at interyalsdetermined by the operation of said machinejsubstantially as described.

' 9. In electric operating-means for adding machines and the like, amotor circuit, a

chine,

in said point, and means forautomatically opemng and closing the circuit stantially as described.

machines. and the like,

,- motor in saidcircuit for said circuit for closing pointjand means operated by the motor for openin the circuit at -.$tantia ly as described.

machines and the tor having a constant tor ue located in said i icuit'and connected to t of the machine, manually 'for closing the circuit means for automatically at another point before completed a.

a motor circuit, a c

ceases circuit forfclosing the circuit at one at another point; sub- 10. In electric operating means for adding a motor circuit, a operating the maine, amagnetic switch having its magnet the circuit at one another 'point suba magnetic switch having its magnet 11. In electric operating means for adding machines and the like, a motor circuit, a

motor in said circuit for operating the machine, a magnetic-switch having its magnet in said circuit for point, means operated by the motor for openmg. the circuit at another point, and means for automatically closing the circuit again at the latter closing the circuit at one point; substantially as described.

' 12. In e ctric o crating means for adding machines and the ike, a motor circuit, a motor in said circuit for a magnetic switch having circuit for closing the circuit at one point, means operated by the motor for opening the circuit at another point, and spring-operated means for automatically again at-the latter point; substantially as described.

operating the machine, its magnet in said closing the ,circuit 13. In electric operating means foradding machines and the like, a motor circuit, a motor in said circuit a magnetic switch circuit for closing and means operated motor for automatically opening and closing the circuit at another point; substantially as described.

for operating the machine, having its magnet in said the circuit at one point, by the armature of the "14, In electric operating means for adding like, a motor circuit, a mo- 1e operating shaft at one point, and opening the circuit the machine has cycle of operation, leaving the circuit open at such point during the completion o the circuit at thesame point upon completion of the cycle of operation; substantially s'described.

such cycle of operation and closing 15, In electric operating means for adding machines and the like, a motor circuit, a motor circuit and connected to t of the machine, manually operated means for closing the circuit at one operated by the motor-for at another point before completed a cycle of operation and leavin motor in said circuit for operating the Inath avlng a constant tor ue located in said e operating shaft point, and means opening the circuit the machine has 9 circuitopen at such point during the operated means stantially as described.

16. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant tor ue located in said circuit and connected to t e operating shaft of the machine, manually operated-means for closing the circuit at one point, means operated by the motor for opening the circuit at another point before the machine has completed a cycle of operation and leaving the circuit open at such point during the completion of such cycle of operation, and.

means for automatically closing the circuit again at the latter point u on com letion of the cycle of operation; su stantia ly as described.

17. In electric operating means for adding machines and the like, a motor circuit, a mo: tor having a constanttor tie-located in-said circuit and connectedto t 1e operating shaft of the machine, manually operated means for closing the circuit at one point, means operated by the motor for opening the circuit at another point, andjjpringpperated means for automatical y closing the circuit at the latter point; substantially as described,

18, In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, manually operated means for closing the circuit at one point, and means 0" crated by the motor shaft for both opening t ie circuit at another point before the machine has completed a cycle of operation,

leaving the circuit open at such point durin tl-iecompletion of such cycle of operation and closing the circuit atkthe same point upon completion of the cycle of operation substantially as described.

19, In electric operating means for adding machines and the llI'EG, a motorcircuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, a magnetic switch having its magnet in said circuit for closing the circuit and maintaining it closed so long as current flows through the coils of the magnet, and means for automatically opening the circuit and closing it again; substantially as described.

20, In electricoperat-ing means for adding machines and the line, a motor circuit, a motor having a constant torque located in said circuit'and connected to the operating shaft of the machine, a magnetic switch having its magnet in said circuit for closing the circuit and maintainin it closed so long as current flows through tie ails of the magnet, and means operated b'y re motonfoi opening the circuit substantiallyas described.

21. In electric'op'eiating means for adding machines and the like, a motor circuit, a motor having a constant torque'located in said circuit and connected to the operating shaft of the machine, a magneticswitrh having its magnet in said circuit for closing the circuit and maintaining it closed so long as current flows through the coils of the magnet, means operated by the motor for opening the circuit, and means for automatically closing the circuit again; substantially as described.

22. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant tor ue located in said circuit and connected to t 1e operating shaft of the machine, a magnetic switch, having its magnet in said circuit for closing the circuit and maintaining it closed so long as current flows through the coils of the magnet, means operated by the motor for opening the circuit, and spring-operated nieansfor automatically closing the circuit; substantially as described.

23. In electric operating means for adding machines and the like, a motor circuit, a mo tor having a constant tor ue located in said circuit and connected to t e operating shaft of the machine, a magnetic switch having its magnet in said circuit for closing the circuit and maintaining it closed so long as current flows through the coils of the magnet, and means operated by the motor shaft for automatically opening and closing the circuit; substantially as described;

24. In electric operating means for adding machines and the like,-a motor circuit, a motor having a constant tor ue located in said circuit and connected to t 1e operating shaft of the machine inanually operated means for closing the circuit and a magnetic switch for maintaining it closed at a given point, and means for automatically opening and closing it at another point; substantially as described.

25. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, manually operated means for closing the circuit and a magnetic switch for maintaining it closed at a given point, and means operated by the motor for automatically opening it at another point; substantially as described. I

26'. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant tor' ue located in said circuit and connected to t e operating shaft of the machine, manually operated means for closing the circuit and a magnetic switch 7 described.

32. In electric operating means for adding circuit and connected to the operating shaft of the machine, manually operated means for closing the circuit and a magnetic switch 'for maintaining it closed at a given point,

means operated by the motor for opening it at another point, and spring-operated means for automatically closing it at the latter point; substantially as described.

28. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant tor ue located in said circuit and connected to t e operating shaft of the machine, manually operated means for closing the circuit and a magnetic switch for maintaining it closed at a given point,

and means operated by the motor shaft for.

both opening and closing the circuit at another oint; substantially as described.

29. 11 electric operating means for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closin the cir; cuit at one point, a magnetic switc having its magnet in said circuit for closing the circuit and maintaining it closed independentlyof said manuallypperatcd means, and means for automatically opening the circuit andclos-' 'machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closin the circuitat one point, a magnetic switch having its magnet in said circuit, for closing the circuit and maintaining it closed independently of said manually operated means, means operated by the motorforautomatically opening the circuit, and' meansfor auto' matically closing it again; substantially as machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means forclosing the circuit at one point, a magnetic switch having its magnet in said circuit, for closing the circuit and maintaining it closed. independ ently of said manually operated .means, means operated by the motor for automatically opening the circuit, and spring-operated means for closing the circuit; substantially as described. (I

33. In electric operating means for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closino'the circuit at one point, a magnetic switch having its magnet in said circuit for closing the circuit and maintaining it closed independently of said manually operated means, and means operated by the motor shaft for automatically opening the circuit and closing it again; substantially as described.

34. In electric operating means for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closin the circuit at one point, a magnetic switc 1 having its magnet in said circuit for closing a branch of the motor circuit in shunt of the manually operated means, and means for automatically opening the circuit and closing it again;

substantially as described.

35. In electric operating means for adding 1 machines and the like, a motor circuit, a mo tor in said circuit for operating the machine, manually operated means for closing the circuit atone point, a magnetic switch having its magnet in said circuit for closing a branch of the motor circuit in shunt of the manually operated means, and means operated by the motor for automatically opening the circuit; substantially as described.

36. In electric operating means for adding machines and the like, a motor circuit, a motor n said circuit for operating the machine,

.manually operated means for clpsing the circult at one point, a magnetic switch having its magnet in said circuit, for closing a branch of the motor circuit in shunt .of the manually operated mpans, means operated by the motor for automatically opening the circuit, andspring-operated means for closing it again;

substantially as described.

37. Inelectric operating means for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, manually operated means for closing the circuit atone point, a magnet c switch having its magnet in said circuit,'for closing .a branch 'of the motor circuit in shunt of the nianuallyoperatedineans, means operated by the motor for automatically opening the circuit, and spring-operated means for closing it; substantially as described.

' 38. In electric operating means for adding machines and'the like, a motor circuit, a motor in said circuit for operating the machine, manually' operated means for closing the circuit at one point, a magnetic switch having its magnet in said circuit, for closing a branch of the motor circuit in shunt of the manually operated means, and means operated by the motor shaft for automatically opening and closing the circuit; substantially as described.

39. In'electric operating means .for adding machines and the like, a motor circuit, a

iotor in said circuit for operating the ma- 5 ally opcning said last mentioned switch, and

chine, a pair of contacts in saidcircuit adapt ed to be closed by a push-button or the like,

- amagnet-ic switch for closing the circuit in shunt of the push button and, its contacts, the magnet of said magnetic switch being included in said circuit, a switch for opening and closing said circuit at another point, and means for automatically opening and closing said last mentioned switch ,1 substantially described. v v,

40. In electric operating means l'or adding machines and the like, a. motor circuit, a

motor in said circuit for operating the machine, a pair of contacts in said circuit adapted tobe closed by push button or the like,

motor in said circuit for operating the machine, a pair of contacts in said circuit adapted to be closed by a push-button or the like,

a magnetic switch for closing the circuit in shunt of the push button and its contacts, the magnet of said magnetic switch being included in said circuit a .witch for opening and closing said circuit, at another point, means operated by the motor for automaticineans for automatically closing it; suhstan tiallyas described." p

42. In electric operatingmeans for adding machines and the like, a motor circuit, a motor in said circuit for operating the machine, a pair of contacts in said circuit, adapted to be closed bya puslbbutton or the like,

a magnetic 'swi 'ch for closing the circuit in shunt otthc push-button and its contacts, the magnet of said magnetic switch being in cluded in. said circuit, a switch for opening and. closing saidcircuit at another point,

' means-operated by the motor for auto,m:;ttic-.

ally opening said last-mentioned switch, and spring-operated means for closing it; substantially as described.

43. In electric operating means for adding machines and the like, a motor circuit, a

motor in said circuit for operating the machine,a pair of contactsin said circuit adapted to be closed by a push-button or the like,

armagnetic switch for closing the circuit in shunt ofthe push-button and its contacts, the magnet ot saidmagnetic switch being included in said cir-cuit, a switch for opening and closing said circuit at. another point, and means.operated by the motor shaft for automatically opening and closing said last-men tioncd switch;- substantially as described;

I 44. In electric operatmg means for adding .circuit at a third machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, manually operated means for closing the circuit at one point, a magnetic switch having its magnet in said circuit, for closingthe circuit and inaintain'ingit closed at another point, and means for automatically opening and closing the circuit at a third point; substantially as described.

45. In electric operating means for adding machines and the like, a motor circuit, a mo-, tor having a constant torque located in said circuit and connected to the operating shaft of the machine, manually operated means for closing the circuit at one point, a magnetic switch'ha vingits magnet in. said circuit, for closing the circuit and maintaining it closed at another point, and means operated by the motor for automatically opening the point; substantially as described. i

46. In electric operating means for adding machines and the like, a motor circuit, a mo tor having a constant torque located in said,

circuit and connected to the operating shaft of the machine, manually operated means for closing the circuit atone point, a magnetic switch having its magnet in said circuit, for closing the circuit and maintaining it closed at' another point, means operated by the motor for automatically opening the circuit at a third point, and means for automatically staritially asdescribed.

47. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit a-nd connected to the operating shaft of the machine, manually operated means for closing the circuit at one point, amagnetic closing the circuit at the latter point; subswitch having its magnet in said circuit, for

closing the circuit and maintaining it closed at another point, means operated bythe motor for automaticallyopening the circuit at a third point, and spring-operated means for automatically closing the circuit at the latter point; substantially as described.

48. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant tor uc located in said circuit and connected to t- 1e operating shaft of the machine, manually operated means for closing the circuit at one point, a magnetic switch having its magnet in said circuit,

1 for closing the circuit and maintaining it closed at another point, and means operated by the mo tor shaft for automatically opening and closing the circuit at atlrird point; substantially as described.

49 In electric operating means for adding machines and the like, a motor circuit, a motor having a constant tor ue located in said circuit and connected to t 1e operating shaft of the machine, retracting springs opposing the movement of the motor shaft, manually operated means for closing the circuit to cause the motor to turn its shaft in one direction, and means inde endent of said manually operated means or automatically openmg the circuit and closing it again; substan- "tially as described.

. 50. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said i circuit and connected to the operating shaft of the machine, retracting springs opposing the movement of the motor shaft, manually o erated means for closing the circuit to cause t e motor to turn its shaft in one direction, means operated by the motor, and independentof said manually operated means, for

opening the circuit topermit the springs to turn the motor shaft in the o posite direc- .tion, and means forautomatlcall closing the circuit again; substantially as escribed.

51. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft 52. In electric operating means for adding machines and the like, a motor circuit, a

motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting springs o posing the movement of the motor sha t, manually operated means for closing the circuit at one oint to cause the motor to turn its shaft 111 one direction, and means for automatically opening and closing the circuit at another point; substantially as described.

53. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting springs ooposing the movement of the motor shat, manually operated means for closing the circuit at one oint to cause the motor to turn its shaft in one direction," and means operated by the motor for opening the circuit at another point to permit the springs to turn the motor shaft 1n the o posit-e di rection; substantially as described 54; In electric operating means. for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting springs o posing the movement of' the motor shat, manually operated means for closing the circuit at one oint to cause the motor to turn its shaft 1n one direction, means operated by the motor for opening the circuit at another point to permit the springs to turn the motor shaft in the opposite direc: tion, and means for automatically closing the circuit again at the latter point; substantially as described.

55. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting springs o posing the movement of the motor sha t, inanuallyoperated means for closing the circuit at one point to cause the motor to turn its shaft in one direction, means 0})- erated by the motor for opening the circuit at another point to permit the springs to turn the motor shaft in the opposite direc-v tion, and spring 'operated means for automaticallyclosing the circuit again at the latter point; substantially as described.

" 56. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting springs opposing the movement of the motor shat, manually operated means for closing the circuit atone oint to cause the motor to turn its shaft in one direction, means operated by the motor for opening the circuit at another point to permit the s rings to turn the motor shaft in the opposite direction, and means operated by the motor shaft for automatically closin the circuit at the latter oint; substantial y as described.

57. n electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting springs 0 posing the movement of the motor sha t, manually operated means for closing the circuit, and-a" magnetic switch for maintaining it closed at agiven point, to cause the motor to turn its shaft in one direction, and means for automatically opening and closing the circuit at another point; substantially as described.

58. In electric operating means for adding machines and the like, a motor circuit, a motor having a constant torque located in said circuit and connected to the operating shaft of the machine, retracting sprmgs o posing the movement of the motor sha t, manuallyopcrated means for closing the circuit and a magnetic switch for maintaining it closed at a given point, to cause the motor to turn its shaft in one direction, and means operated by the motor shaft for cause the motor to turn its shaft in one direc- .sea'eea v opening the circuit at another point to per-,

' mit the sprin s to turn the motor shaft in the opposite scribed.

irection; substantially as de- 59. In electric operating means for adding machines-and the hke, a motor circuit, a motor having a constant torque located in said-- circuit and connected to the operating shaft of the machine, retracting springs opposing the movement-of the motor shaft, manually operated means for closing the circuit. and a magnetic switch for maintaining it closed at a given point, to cause the motor to turn its shaft in one direction, means operated by the motor shaft for o ening the circuit at another point to permit t e springs to turn the motor shaft in the opposite direction, and means operated by 'the motor shaftfor automatically closing the'circuit again at the latter point; substantially as described.

60. In electric operating means for adding machines and the like, a motor circuit, a motor having'a constant tor ue located in said circuit and connected to t e operating shaft tion, andmeans for automatically opening and closing the circuit at a third point; substaiitially as described.

61. In electric operating means for adding machines and the like, a motor'circuit, a motor having a constant tor ue located in said circuit and connected to t e operating shaft of the machine, retracting springs opposing the movement ofthe motor shaft, manually 1 operated means for closin the circuit at one point, a magnetic switch aving its magnet in said circuit, for closing the circuit and 1 maintaining it closed at another point, to

cause the motor to turn its shaft in one direction, and means operated by the motor for auton'iatically'opening tllBClI'Cllli; at a third point; substantially as described.

62. In electric operating means for adding machines and the like, a motor circuit, a motoriliaving a constant tor ue located in said circuit and connected to t e operating shaft of the machine, retracting springs opposing the movement of the motor shaft, manually operated means for closing the circuit at one point, a magnetic switch having its magnet m,said circuit, for closing the circuit and maintaining it closed at another point, to

cause the motor toturn its shaft in one direction, and means operated'by the motor for automatically opening and closing the circuit at a third oint; substantially. as described. 63. An e ectrical attachment to an adding machine to twist its shaft against a spring resistance by pressing a button, which embodies ameans for completing the circuit by hand, thereby causing a magnet or motor to twist the shaft sufiiciently to operate the adding machine, a spring for returning the shaft to its normal position means for keeping the circuit closed while the motor is operating, and means for breakin and makingthe circuit by the motion, so t at the break permits the spring toreturn the whole apparatus to the startirrg position for the purpose d escribed.

64b. An electrical attachment to an adding machine to twist its shaft against a spring resistance by pressing a button, which embodies ameans for completing the circuit by hand, thereby causing a motor or ma et to twist the shaft sufliciently to o crate t e forward stroke of the adding mac e, aspring for returning the shaft to its normal osition means for keeping the circuit closedw 'le the motor is operating, and means for breaking and making the circuit by the motion so that the break permits the spring to return the Whole ap aratus to the starting position and so that t e reciprocatorymotion shall (:ontinue until the hand isreleased.

65. In combination, an adding machine having a shaft adapted to beturned, means for returnin the shaft to its original'position,

an electrica device for turning 'the shaft,

means operated by hand for closing the cir-.

:cuit through said device at one point, and

means operated by said electrical device for breaking the circuit at another point, substantially as described.

' "66. In combination, an adding machine having a shaft adapted to be turned a ainst a spring resistance and to he returns to its original position by said s ring, an electrical device for turning the shat, means operated 10.5 by hand for closing the circuit through said device at one point, and means operated b said electrical device for breaking the circuit at another point, substantially as described.

In testimony whereof I affix my signature 11c in presence of two witnesses.

7 WILLIAM SMITH HORRY.

Witnesses:

G. C. .MosHnR, GEO. H. DANFORTH.