US1178438A

US1178438A - Combined type-writing and computing machine.

Info

Publication number: US1178438A
Application number: US63640511A
Authority: US
Inventors: J Frank Allard
Original assignee: UNDERWOOD COMPUTING MACHINE CO
Current assignee: UNDERWOOD COMPUTING MACHINE CO
Priority date: 1911-07-01
Filing date: 1911-07-01
Publication date: 1916-04-04
Anticipated expiration: 1933-04-04

Description

J F. ALLARD. I

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY I, 1911.

Patented Apr. 4, 1916.

4 SHEETS-SHEET 1. 100

THE COLUMBIA PLANOGRAPH c0., WASHINGTON, n. c.

fliia nef J F.. ALLARD.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY 1, m1.

Patented Apr. 4, 1916.

4 SHEETS-SHEET 2 THE COLUMBIA PLANOGRAPH c0., WASHINGTON, D. c.

J F. ALLARD.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

'APPLICATION FILED JULY 1. 1911.

4 SHEETSSHEET a.

Patented Apr. 4

[Merl/Z07.-

rm! CDLUMIIA PLANOORAPH ,c0., WASHINGTON, n. c.

Patented Apr. 4, 1916.

4 SHEETS-SHEET 4 [man/Z07: $1M W J J F.-ALLARD. COMBINED TYPE WRITING AND COMPUTING MACHINE.

w m w M H M m A 8 0O 8 7 1 1 THE COLUMBIA PMNDGRAPH co., WASHINGTON, D. C.

UNITED STATES PATENT OFFICE.

J FRANK ALLARD, OF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

- UNDERWOOD COMPUTING MACHINE COMPANY, ,OFfNEW YORK, N. Y., A CORPORA- TION OF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE 'Spe cificationof Letters Patent.

Patented Apr. 4, 1916.

Application filed July 1, 1911. Serial No. 636,405.

To all whom it may concern. I

Be it known that I, J FRANK A LARD, a citizen of the United States, residing in Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Combined Type-lVriting and Computing Machines, of whichthe following is a specification. f This invention relates generally to that class of combined typewriting and adding machines in which computing devices are set up by the numeral keys of the typewriter, and subsequently rotation is effected of the computing wheels, each to an extent determinedby the setting of the computing devices by the numeral keys. The carriage of the typewriter is connected to the computing mechanism in a manner to determine the denomination of the computing device which is set by any key. A machine of this general description is illustrated in application No. 466,836, filed December 10,1908.

One of the principal objects of the present invention is to provide simple and efficient means for causing the general computing operator to be actuated automatically. To this end, I provide an electric motor or prime mover, which. is included in a normally open circuit, and hence is normally silent; but upon a certain movement of the carriage of the typewriter the circuit is closed, and the motor rotatesor moves, and the general operator is reciprocated. This circuit-closing movement of the carriage preferably occurs at the time that a digit is written in the units place in the column on the work sheet; but it will be understood that so far as certain features of my invention are concerned, the circuit may be closed by other movements of said carriage. It will also be understood that the circuit may be closed by other means in connection with the depression of a numeral key to compute at the units place in a computation. The general operator is of a re ciprocating type,and a rotatable member is connected. thereto by a cranl", s0 that one rotation of the member will effect a com-' plete reciprocation of the general operator.

Upon the carriage of the typewriter, there is mounted a wiper, cam or tappet, which, at each step of the carriage, whenever computation is begun, operates one of a set of jacks, whereby is determined thedenomination of the computing device to be set by the next depression of a typewriter key.

This cam or tappet is caused also, according to the present improvements, tofoperate a supernumerary ack, which in turn closes said motor circuit, so that when the carriage advances (upon the release of the type key employed to write a digit in the units place) said supernumerary jack effects the closing the result of all the numbers that are written during the run of the carriage may be shown upon the computing wheels.

In the accompanying drawings, Figure l is a perspective rear view of the principal members of the improved mechanism for controlling the general operator, the parts being shown'in normal positions, both circuits being open. Fig. 2 is a part sectional side elevation of a combined typewriting and computing machine of the Underwood- I-Ianson type, embodying the present improvei'nents. Fig. 3 is a diagram of the electrical circuits. Fig. 4 is a sectional side elevation of the motor-gearing and its con nections. Fig. 5 is a plan of the principal devices seen at Fig. 4. In this figure, the general operator-is atthe final end of its stroke. Fig. 6 is a sectional side elevation of a detail of the means whereby any special finger-key may close the motor circuit, to cause the actuation of the general operator. Fig. 7 is asfectional front elevation of the invention. Fig. 8 shows a shiftable fulcrum for a special'jack; Fig. 9 is a front to throw type bars 5 upwardly and rearwardly to strike upon the front side of a platen 6, which is mounted to travel upon a letter-feeding carriage 7. The said carriage is driven in the usual manner by a spring 8, and is controlled by letter-feeding devices, these devices comprising a universal bar 9, actuated by heels on the type-bars and forming part of a frame 11, said frame having vibrating supports 12 and actuating the usual letter-feeding dogs 12 which control escapement wheel 12*. Upon said carriage is a tappet 13, which is usually adjustable along the rack bar 14, and has a cam edge to lift in succession jacks 15 arranged in a row mounted upon a fulcrum 16. The rear ends of the jacks press down links 18 to vibrate levers 19, which are connected to linkages 20 to lift the rear ends of a series of bars 21, whose forward ends carry racks 22 to mesh with pinions 23 provided upon dial wheels 24, whereby the latter may be rotated. The numeral keys 1 have stems 25 to operate arms 26 upon linkages 27 to depress any of a set of pins 28 upon the elevated rack bar. As the carriage 7 feeds step-by-step, the rack bars 21 are elevated in succession, and clownwardly from each one is projected a pin 28. The rack bars fall to normal positions, thus bringing the depressed pins into the path of a cross bar 29 forming part of a general operator. The general operator, which also comprises pairof arms 30 and a pair of racks 31 on opposite sides of the machine, is connected by pinions 32 and segments 33 to a shaft 34. The general operator is slid forwardly, by 'IllBflIlS presently to be described, the bar 29 engaging all of the depressed pins and driving forward the racks 22 corresponding distances, to turn the dial wheels 24 accordingly.

Upon striking a key 1 to print a. digit in the units place in the column, and then releasingsaid key, the carriage 7 advances one, step, and the tappet 13 engages the nose 162 of a special jack 36 placed at the end of the row of jacks and having a link 37 to engage arm 38 forming part of a bell crank, the other, arm 39 of which carries a rod or link 40 (supported by an idle link 41), and at its, forward end has a pin 42 to engage and press forwardlyan car 43 provided upon a switch bar 44, the latter pivoted at 45 upon a fixed plate 46 of insulating material, and being adapted to close a circuit through an electrical motor 47, which is connected to the following means for recip-. rocating the racks 31 and arms 30 to operate the dial wheels 24. The shaft '48 of said motor has a worm 49, Fig. 4, meshing with a. worm wheel 50 upon a shaft 51, and is intended to give said shaft a single complete revolution more or less, at each cycle of operations, Upon said shaft5lis. car

ried, Fig. 2, a crank 52, having at its end a swiveled block 53 sliding in a guide groove 54 on a head 55, the latter being fixed upon a rod 56, which slides forwardly and backwardly in

guides

57, 58. The upperend of the head 55 is fitted in a yoke 59, secured upon one of the racks 31 of the general operator; and a single revolution of said shaft 51 causes a complete reciprocation of the head 55, the. yoke 59 and the general operator (comprising the

members

31, 30, 29, etc.) When, therefore, a digit has been printed in the units place in a column of writing, and the carriage has consequently been fed past said units place, and the special jack 36 has hence been operated, the circuit is closed through said motor 47, and the general operator is reciprocated. Said switch 44 has an arm 60, carrying a binding post 61 for one conductor 62 of the motor circuit, Fig. 3. The other wire 63 of said circuit is attached to a post 64 carried by a plate 64, fixed upon the insulating plate 46 in the path of the switch 44 to be engagcd thereby, to close the motor circuit;

.astop 65 beingprovidcd for the switch 44.

, During the forward or inner stroke of the head 55 which actuates said general op erator of the computing mechanism, there is a swinging movement of a lever 66, whichis pivoted at 67 upon said insulating plate 46, and has an arm 68 which presses against an arm. 69 projecting from the head 55, and hence follows said arm for a certain distance when the head 55 moves; this movementof the lever 66 being effected by a draw-spring 70, which is connected to an arm 71 of a bell crank pivoted at 72 upon said plate 46, and having an arm 73 to engage an end of the lever 66 to turn the same. By means of this spring, the parts 66, 71 are (at the initial stroke of head 55) swung to the position at Fig. 5. It will be noticed that the arm 71 consists of two members pivoted together at 74', the spring being connected to the member 7 5; a stop 76 limiting the ielative movement of the arms, and a stop 77 arresting the bell crank 71, 73. The described movement of the parts 66 and 71, from the normal position at Fig. 1 to the abnormal position at Fig. 7, is idle; but during the latter part of the return stroke of the general operator and of the reciprocating head 55, the arm 69 of the latter engages the arm 68 of lever 66, and by means of said lever swings the bell crank 73, 71 against the tension of spring 70; a tip 78 of insulating material, secured upon the end of the jointed arm 75, engaging an inclined or diagonal edge or cam 79 on said switch 44, and thereby forcing said switch to swing away from the contact plate 64, to break the motor circuit, so that the motor may come to rest when the function of thegeneral operator. has been performed. The

good contact, the bar 141 being of slightly yielding construction, and being held frictionally upon said contact portion 6 1".

It will be understood that during the movement of the jointed switch-opener 71, 75, before described, effected by spring 70, the tip 78 at first abuts against the end or shoulder of cam 79, but that the joint 7 1 permits the spring 70 to complete the return movement of the bell crank 71, 73, and that said tip 78 finally trips off from the shoulder, resuming its proper relation to the arm 71, as at Fig. 5. This breaking of the motor circuit occurs when the head 55, which reciprocates the general operator, has nearly completed its cycle of movements; the completion of said cycle being effected by the motor -17, which may run by momentum. In order. to prevent over-running of the motor, a brake 80 is provided, in the form of a lever fulcrumed at 81 upon a fixed bracket 82, and having a shoe 83 of leather or fibrous material to run upon a facing 81 of like material, provided upon a wheel 85 fixed upon the shaft 18 of the motor.v This brake is operated automatically by means of a solenoid 86. The circuit of the solenoid 86 is normally open,but is closed by that movement of the switch bar 44 which is effected through the

parts

69, 66, 71, etc. One conductor or side 87 of the solenoid circuit is attached at 88 to an ear 89 on said switch bar 4A; and the other side of said solenoid circuit (which may include a resistance coil 90),terminates at a contact 91 fixed upon the plate or base 416, and of inclined or beveled shape, so that the flexible bar 4-1 may be forced up the bevel (91 and be held frictionally thereby. Thus, at the time that the motor circuit is open, the solenoid circuit is closed, so that the brake is instantly applied, and the motor comes almost instantly to rest, so that there is little or no over-throw of the shaft 51 driven by said motor and serving to reciprocate the head 55 connected to the general operator.

The solenoid circuit is automatically opened by means of a cam 92 secured upon the core 93 of the solenoid, said cam, at the final portion of an inward stroke of said core 93, engaging said ear or finger 43 on the switch bar 141, and moving the same forwardly to disconnect it from the contact 91,

although not sufliciently far to connect it to the contact 641 A detent 9 1 having a pointed tooth or cam-shaped portion 96 is pressed by a spring 95 to engage said portion 96 in a depression or perforation 97 in the switch bar 4.4, to complete the stroke of the latter to normal position, and hold it having a member 108, which, by. means or yield while substantial pressure is effected of the brake against the brake wheel Sl; this yielding movement being utilized for the purpose of enabling the cam 92 to move the ear 13 sufiiciently to disconnect the switch 41 from the contact 91, or at least to put said switch 14: under the control of cam 96, which will complete the return of the switch to normal position.

A key 100 at the keyboard is provided with a stem 101, pivoted 102 to the for ward end of a lever 103, which bears down The solenoid upon a finger 104 provided upon an arm 105 (Fig. 6) pivoted at 106 to a fixture 107 and the key 100, is forced to swing down. and vibrate the switch bar 41 1-, to bring the op posite end thereof into engagement with the contact 6 1*; a spring 109 returning the

members

105, 103 and 100 to normal positions; so that at any time, by merely touching the key 100, the operative can cause a movement of the general operator of the computing mechanism.

As will be seen at Fig. 9, the nose 162 of the ack 36 is made very thin, and the tappet 13 is of such form that the jack 36' will be operated (Fig. 10) and released (Fig. 9) by the time the paper carriage 7 completes its first letter-feeding movement after the writing of a digit in the units place. The projecting pin 4'2 is accordingly withdrawn from the arm 43 of the switch lever prior to the completion of the operation of the general operator, so that a second operation of the latter does not occur.

By turning a button 163, the special jack 36 can be moved to a position to silence or disable the denomination selecting mechanism. This button is mounted upon the outer end of a stub shaft 164: which is eccentric to the shaft 16 that carries the jacks normally is concentric with the shaft 16, i V

and which, by rotatiou'of the button 163 through half a revolution, is lifted above the shaft 16, so that the nose 162 of the special jack 36 is raised too high to be engaged by the tappet 13. To hold the stub shaft 164C where adjusted, a spring 167 presses a ball 168 into a seat 169, Fig. 8, formed in the stub shaft, said spring being held down by a screw. The stub shaft may have depressions on its opposite sides, and these depressions may be connected by a shallow peripheral groove 171. R

In the application of Frederick A. Hart, No. 607,925, filed February 11, 1911. is disclosed a vconstantly-rotating electrical motor and means dependent upon the movement of the carriage at the units place for connecting said motor to the general operator; but I do not claim herein any feature of invention disclosed in said application.

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

Having thus described my invention, 1 claim:

1. In a combined typewriting and computing machine, comprising a carriage, numeral keys, indexing devices set thereby, a letter-feeding mechanism for said carriage, said feeding mechanism controlled by said keys, dial wheels or members, and a general operator for advancing said wheels to points determined by the set indexing devices, the combination of a normally stationary electrical prime mover for actuating said general operator, said prime mover included in a circuit, means positively controlled by saic general operator for opening said circuit, means dependent upon the letter feeding movement of the typewriter carriage for closing said circuit, and means independent of said carriage for holding the circuit closed.

2. In a combined typewriting and computing machine, comprising a carriage,

numeral keys, indexing devices set thereby,

a letter-feeding mechanism for said carriage, sald feeding mechanism controlled by said keys, dial wheels or members, and a general operator for advancing said wheels to points determined by the set indexing devices, the combination of a normally stationary electrical prime mover for actuating said general operator. said prime mover included in a circuit, a switch in said circuit, means dependent upon the letter feeding movement of the typewriter carriage for closing said switch, and a switchopener operable by said general operator.

In a combined typewriting and computing machine, comprising a carriage, numeral keys, indexing devices set thereby, a letter-feeding mechanism for said carriage, said feeding mechanism controlled by said keys, dial wheels or members, and a general operator for advancing said wheels to points determined by the set indexing devices, the combination of a normally stationary electrical prime mover for actuating said general operator, said prime mover included in a circuit, a switch in said circuit, means dependent upon the movement of the typewriter carriage for closing said switch, a switch-opener operable by said general operator, and a yielding construction to permit return movement of said switch opener independently of said switch.

I. In a combined typewritingand computing machine, comprising a carriage, numel'al keys, indexing devices set thereby, a

letter-feeding mechanism for said carriage,

vsaid feeding mechanism controlled by said vices, the combination of a normally stationary electrical prime mover for actuating said general operator, said prime mover included in a circuit, a switch in said circuit, means dependent upon the movement of the typewriter carriage for closing said switch, a switch-opener operable by said general operator, and a spring for returning said switch-opener at the next initial stroke of the general operator; said switch-opener having a yieldable construction to permit such return movement independently of said switch.

5. In a combined typewriting and co1nputing machine, comprising numeral keys and indexing devices set thereby, dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letterfeeding carriage, the combination with an electrical motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, a brake for said motor, and means dependent upon the movement of said general operator for opening said circuit and throwing said brake into action.

I 6; In a combined typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letterfeeding carriage, the combination with an electrical motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, a brake for said motor, a solenoid or magnet to operate said brake and included in a normally open circuit, and means dependent upon the movement of said general operator for opening said motor circuit and closing said solenoid circuit.

7. In a combined typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dial wheels, ageneral operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letterfeeding carriage, the combination with an electrical motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, a brake for said motor, a solenoid or magnet to operate said brake and included in a normally open circuit, means dependent upon the movement of said general operator for opening said motor circuit and closing said solenoid circuit, and means for automatically opening said solenoid circuit. 7

8. In a combined typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letterfeeding carriage, the combination with an electrical motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, a brake for said motor, a solenoid or magnet to operate said brake and included in a normally open circuit, means dependent upon the movement of said general operator for opening said motor circuit and closing said solenoid circuit, and means for automatically opening said solenoid circuit, the last mentioned means including a cam operated by the core of the solenoid.

9. In a combined typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letterfeeding carriage, thecombination with an electrical motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, a brake for said motor, a solenoid or magnet to operate said brake and included in a normally open circuit,

means dependent upon the movement of said general operator for opening said mo tor circuit and closing said solenoid circuit, and means for automatically opening said solenoid circuit, the last mentioned means including a cam operated by the core of the solenoid and operating to open a switch in the solenoid circuit, a yielding construction being provided between the brake and the I solenoid core, to permit movement of the core after the brake is set.

10. In a combined typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letter-feeding carriage,the combination with an electrical motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, a brake for. said motor, a solenoid or magnet to operate saidbrake and in 'cluded in a normally open circuit, means dopendent upon the movement of said general operator for opening said motor circuit and closing said solenoid circuit, means for automatically opening said solenoid circuit, the last mentioned means including a cam operated by the core of the solenoid, and a yielding device, as 9-1, to complete the opening of the solenoid circuit.

11. In a combined typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a letter-feeding carriage, the combination with an electrical motor or prime mover connected to said general operator and included in an open cirmeans for automatically opening said solea noid circuit, the last mentioned means including a cam operated by the core of the solenoid, and operating'to open said switch and a yielding detent or device to complete the opening of the solenoid circuit.

12. In a computing machine, the combination with a system of settable devices on which a number may be set up, of a series of registering devices into which numbers so set up may be carried, a general operator for operating all the registering devices concomitantly to so carry the numbers, a normally silent electrical prime mover for actuating said general operator, automatic means dependent upon the setting of the settable devices for computing the last digit in a number, for inciting said prime mover to action, and means for independently maintaining said prime mover inaction and for bringing it to rest.

13. In a computing machine, the combination with a system of settable devices on which a number may be set up, a series of registering devices into which numbers so set up may be carried, a general operator for operating all the registering devices concomitantly to so carry the numbers, and a letter-feeding denomination-controlling carriage, of a normally silent prime mover for actuating said general operator, means called into action by the carriage movement in letter-feeding direction past a predetermined point, for inciting said prime mover to action, and for releasing the prime mover from the control of the carriage, means for maintaining the prime mover in action after the control of the carriage ceases, and

means for depriving the prime mover of motive power.

143. In a computing machine, the combination, with a system of settable devices on which a number may be set up, a series of registering devices into which numbers so set up may be carried, a general operator for operating all the registering devices concomitantly, to so carry the numbers, a normally silent prime mover positively connected to operate said general operator while active, and means for inciting said prime mover to action; of an automatic brake for bringing said prime mover to rest when said general operator has completed a cycle of movements.

15. In a computing machine, the combination with a system of settable devices on which a number may be set up, a series or registering devices into. which numbers so set up may be carried, a general operator for operating all the registering devices can comitantly to so carry the numbers, and a normally silent prime mover for actuating said general operator, of automatic means for incitin said prime mover to action when the last digit of a number has been set up on said settable devices, for maintaining the prime mover in action independently, and

for bringing it to rest, and means for rendera ing said automatic inciting means incapable of action.

16. In a computing machine, the combination with a system of indexing devices on which numbers may be set up,- a series of registering devices into which numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, of a normally stationary electric motor for actuating said general operator, a normallyopen circuit wherein said motor is included, automatic means for closing said circuit immediately upon the last digit of a number being set up on said indexing devices, and means for thereafter holding said circuit closed.

17. In a computing machine, the combination with a system of indexing devices on which numbers may be set up, a series of registering devices into which numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, of a normally-stationary electric motor for actuating said general operator, a normallyopen circuit wherein said motor is included, automatic means for closing said circuit immediately upon the last digit of a number being set up on said indexing devices, means for thereafter holding said circuit closed, and automatic means for opening said circuit when said general operator has completed a cycle of operations.

18, In a computing machine, the combination with a system of settable devices onwhich a number may be set up, a series ofv registering devices into which numbers so setup may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, of a prnne mover for actuating sa d general operator, an'automatic brake for stopping said prime mover, and means for relieving said wheels concomitantly to points determined 7 by the set indexing .devices, and a letter-.teeding carriage, the combination with an electria cal motor or prime mover connected to said general operator and included in an open circuit, of means dependent upon a letterfeedmg movement of the typewriter carriage for closing said circuit; means being prov1ded for releasing said ClICHltflOlTl the control of said carriage prior to the completion of sald movement, to prevent repeated o'perat1on of said general opera tor.

In a combined type/writing and con puting mach ne, comprising type-operating numeral keys and indexing devices set thereby, .a typewriter carriage, letter-feeding mechanism for said carriage, said mechanism controlled by said keys, dial wheels, and a general operator for advancing said wheels to points determined by the set in dexing devices, the combination with it normally open electrical circuit, a normally stationary electrical prime mover included in said circuit for actuating said general op,-

erator and a circuit-closing switch, of means dependent up on the letter-feeding movement of the typewriter carriage beyond the units place in a computation, for operating said switch to close said circuit, and means independent of said carriage for thereafter holding the. switch in operated position.

21. In a combined typewriting and com-, puting machine, comprising numeral keys and indexing devices set thereby,dial wheels, a general operator for turning said wheels concomitantly to points determined by the set indexing devices, and a lettenfeeding carriage, the combination with an electrical motor or prime mover connected to, said general operator and included in an open circuit, of means dependent upon the movement of the typewriter carriage for closing said circuit, means independent of said carrlage for hold ng the circuit closed, and

-means for automatically breaking said cir-.

a general operator for turning said wheels concomitantly to points determined by the.

' circuit at the conclusion of the cycle of the general operator.

28. In a combined. typewriting and computing machine, comprising numeral keys and indexing devices set thereby, dials, a

general operator for turning said dials concomitantly to points determined by the set indexing devices, and a letter-feeding carriage, the combination with an electrical 'motor connected to said general operator, of a motor starter normally in ineffective position, a dog or tappet on said carriage to operate said starter, means for retaining said starter in operated position to maintain the motor in operation, and means'for releasing said starter from said retaining means upon the completion of the cycle of operations ofthe general operator to cause the motor to become inactive.

24. In a combined typewriting and comindexing devices set thereby, registering devices, a general operator for advancing all the registering devices concomitantly to points determined by the set indexing devices, and a letter-feeding carriage, the

combination with an electric motor connected to said general operator, of a motor starter normally in ineifective position, a dog or tappet on said carriage to-move said a starter into effective position, means independent of said dog or tappet for retaining said starter in effective position, means for releasing said starter from said retaining means upon the completion of a cycle of operations of the general operator, and means independent of said releasingmeans and said dog or tappet forreturning said starter to normal position after having been released. i

25. In a combined typewriting and computing machine, comprising indexing de- Vices on which numbers may be set up, registering devices, and a general operator for advancing said registering devices to points determined by the set indexing devices, the combination of an electric circuit normally open and including a normally-stationary prime mover for actuating said general operator, means dependent upon the letter feeding movement of the carriage for closing said circuit, means independent of the carriage for holding the circuit closed, and .means directly connected to said general operator for subsequently opening said circuit.

26. In a computing machine, the combination with a series of settable devices on which numbers may be set up, a series of registering devices into which the numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, of a normally-inactive electric motor for actuating said general operator, a circuit wherein said motor is included, a cir cuit-closing switch, automatic means for operating said switch immediately upon the last digit of a numberbeing set up on said settable devices, and retaining means engageable by said switch for positively holding the same in circuit-closing position.

27. In a computing machine, the combina tion with a series of settable devices on which numbers may be set up, a series of registering devices into which numbers so set up may be carried, and a general operator for operating all the registering de vices concomitantly to so carry the numbers, of a normally-inactive electric motor for actuating said general operator, a circuit wherein said motor is included, a circuit- I said switch into position to close said circuit immediately upon the last digit of a number being set up on said settable devices, retaining means for positively holding'said switch in circuit-closing position, and automatic means for releasing said switch from said retaining means when said general operator has completed a cycle of operations. 28. In a computing machine, the combination with a series of settable devices on which numbers may be set up, a series of registering devices into which the numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, of a normally-inactive electric motor for actuating said general. operator, a circuit wherein said motor is included, a resilient switch, auton'iatic means for moving said switch into position to close said circuit upon'the lastdigit of a number being set up on said settable devices, and means frictionally engaged by said switch when so moved, whereby said circuit is held closed. 29. In a computing machine, the combination with a series of settable devices on which numbers may be set up, a series of registering devicesinto which numbers so set up may be carried, and a general. operator for operating all the registering devices concomitantly to so carry the numbers, of a normally-inactive electric motor for actuating said general operator, a circuit wherein said motor is included, a resilient switch, automatic means for moving said switch into position to close said circuit upon the last digit of a number being set up on said settable devices, means frictionally engaged by said switch when so moved, whereby said circuit is held closed, and automatic means for releasing said switch from such engagement when the general operator has completed a cycle of operations.

30. In a computing machine, comprising indexing devices on which numbers may be set up, registering devices into which numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, the combination with a normally-silent electric motor for actuating said general operator, and a normally-open circuit wherein said motor is included, of automatic means dependent upon the setting up of the last digit of a number for closing said circuit, a brake for said motor, and means dependent upon the movement of said general operator for opening said circuit and actuating said brake.

31. In a computing machine, comprising indexing devices on which numbers may be set up, registering devices into which the numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, the combination with an electric motor for actuating said general operator. a circuit wherein said motor is included, and a switch in said circuit, of automatic means dependent upon the setting up of the last digit of a number for moving said switch actuating said general operator, :1 circuit wherein said motor is included, and a switch in said circuit, of automatic means dependent upon the setting up of the last digit of a number for moving said switch into position to close said circuit, a lever for moving said switch into position to open said circuit, and a lever engageable by said general operator when the latter has approximately completed a cycle of operations, for actuating the first-named lever.

33. In a computing machine, comprising indexing devices on which numbers may be set up, registering devices into which the numbers so set up may be carried, and a general operator for operating all the registering devices concomitantly to so carry the numbers, the combination with a normallysilent electric motor for actuating said general operator, a circuit wherein said motor is included, and a controlling switch in said circuit, of a rocker having an arm adapted to engage and operate said switch to close said circuit, a key for operating said rocker, and means under the control of the general operator to automatically engage and operate said switch to open said circuit.

34. In a computing machine, comprising indexing devices on which numbers may be set up, registering devices into which the numbers so set up maybe carried, and a I general operator for operating all the-registering devices concomitantly to so carry the numbers, the combination with a normallysilent electric motor for actuating said gen eral operator, a circuit wherein said motor is included, and a controlling switch in said circuit, of a rocker having apair of arms one of which is adapted to engage sai switch and move the same into position to close said circuit when said rocker is operated, a manually-operated, depressible mem ber extending across the other arm to operate said rocker when depressed, and means under the control of the general operator to automatically engage and operate said switch to open said circuit.

J. FRANK ALLARD. IVitnesses:

K. FRANKFORT, C. RIPLEY.

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