US976577A - Driving device for registering-machines. - Google Patents

Description

G. P. KBTTERING. DRIV/ING DEVICE FOR REGISTERING MAoHNBS.

- V APPLIOATION PILEI) NOV. 6*, 1605. 976,577. Patented Nov. 1910.

c. P. KETTERING. DRIVING DEVICE POR RBGISTBRING MACHINES.

` APPLICATION FILED NOV. 8, 1905. 976,577. Patented Nw. 22, 1910.

3 SHEETS-SHEET 2.

C. F, KBTTERING. DMV'ING DEVICE FOR REGISTERING MACHINES. APPLIGATION FILED NOV. 6, 1905.

976,577. Patented Nov. 2221910.

3 SHEETS-SHEET 3.

A zak vnected therewith and the special operating UNITED STATES PATENT OFFICE.

CHARLES F. KEfIPIlERIhTGy OF DAYTON, OHIO, ASSIGNQR, BY MESNE ASSGNMENTS, TO

THE NATIONAL CASH REGISTER COMPA OHIO, (INCQRPORATED IN 1906.)

NY, DAYTON, OHIO, A. CORPQRATION OF DRIVING DEVICE FOR REGISTEB'TNGJKACHINES;

.Application filed November G, '1905.

Specification of Letters Patent.

To all whom it mog; concern;

Ee it known that l, @Hannes F. Karren- ING, a citizenot the United. States, residing at' Dayton, in the county ol Montgomery and State of Ohio, have invented. certain new and useful Improvements in Driving Devices for RegisteringMachines, ot' which I declare the Jfollowing to be a full, clear, and exact description.

This invention relates to improvements in driving mechanisms for cash registers or similar machines and has among its objects to provide an improved t'orm et'` electrically operated driving' mechanism wherein a special key controls the establishing ot a circuit through a normally inactive motor, which motor is Iconnected with the driving shaft mechanism oi the machine by means of suit-, able clutch inechanism,`and at the end of the normal cycle of movement ot the machine, thecurrent is automatically broken and the machine brought to rest in its normal condition; andto cli'ectthe proper cooperation of the various parts of such mechanism, suitable ii'iterlocking devices are also provided.

lVith these and incidental objects in view, the .invention consists in certain novel feas. turcs ot construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferred 'l'orm loit' embodiment ot which is hereinafter specitically described with. reference to the drawings which accompany and torni part of this speriication.

Ot said drawings.: Figure 1 represents a side elevation ot the machine to which the electrical driving mo'toris attached. .Fig 1a represents a sectional view ot the spring contact making device. Fig. 1b represents a detail View partly sectionalized of av portion ot Fig. l, Fig. 2 represents diagrammatic viewy ot the electrical connections. F ig. 3 represents a side elevation of the. machine with the electric motor detached therefrom but showing the gearing conkey. 'Fig 4 represents a detail view partly sectionalized of the key-board of the machineshowing certain of the interlocking devices. Fig. 5 represents a detail View of one of the key detents. Fig. 6 represents a detail view of one of the operating cams and its connecting parts for releasing the special operating key. Fig. 7 represents a seetional detail View through the magnetic clutch. Fig. 8 represents a section 'taken on the line 88 ot Fig. 7 looking in the direction of the arrow crossing the said line.

For the purpose of a better understanding of the general operation of the machine it may be stated in brief that the electric driving motor is normally inactive, and that the special operating key which controls the making of a circuit through said motor for the purpose of operating the machine, is normally locked. from operation but is unllocked by the operation of any one of a bank of special lkeys; and when. the special operating key is thus operated, a spring ,actuated contact making device is released 'and assumes such position as to make the electric circuit through the electric motor and also through the magnetic clutch connected to the main operating shaft of the machine so that the movement of the motor will thereby be transmitted to the operating parts ot' the machine; andas soon as the vmain` operating shaft. of vthe machine has completed its normal cycle ot movement- ,it is 4stepped and locked from further movement by means of alocking device which in itself serves to again release the spring actuated contact device to permit the same to return to normal position and thereby breaks the circuit through the motor and magnetic clutch.

- With this description of the general mode of operation ot' the parts, the speciiic'devices will now be described more in detaih Referring to Fig. 1 it will be seen that the electric motor 10 (shown in dotted lines therein) is arranged when rotated to turn the shaft 11 upon the rearward end of which is a Worm 12 which meshes with a gear wheel 13 fast upon the clutch shaft 14. Shown in Fig. 7 is the gear wheel 13 which is formed with a huh portion 15 to which is made fast a soft iron disk 16 Within which are coiled strands of Wire 17 tor the purpose of magnetizing` the disk 16. Between the gear 13 and the disk 16 is alcol- 4 lar 18 of insulating material having a. partition 19Which separates tWo strips of conof the machine.

. pin 42 ducting material 20, one extremity of the wire 17 being connected to one of these electrodes or Contact pieces and the other end of the wire 17 being connected to the other electrode. Bearing upon each of these electrodes is a brush 21 for the purpose of transmitting the current to the electrodes and thence to the wire 17 to magnetize the disk 16. Adjacent to and face to face with the disk 16 is another soft iron disk 22 journaled upon the shaft 14 and havin fast to its side a gear wheel 23 which as s own in Fig. 3 meshes with a gear wheel 24 fast upon the lower operating shaft 25; and also fast upon this same shaft 25 is a larger gear wheel 26 which meshes with a companion gear wheel 27 fast upon the upper o rating shaft 28 This sha t 28 has also fast to it another gear wheel '.29 which meshes with a similar gear wheel 30 fast to an auxiliary operating shaft 31 which latter constitutes one of the operating shafts of the machine to which this invention is applied, although the said shaft 31 takes no part in the operation of the invention herein described. The directionof rotation of the various shafts is shown by arrows in the various tigures.

The special operating key for controlling the making of the electric circuit will now be described. This key as shown in Fig. 3 is pivnted to the main frame at 41. At its forward ortion it has formed upon it a l bellow which swings a lookin dog 43 :tast to the rock shaft 44 and forme with a foot 45 swinging between sto pins 46. it will` be seen that normally t e pin 42 rests upon the'dog 43 and the key' 40 is therefore normally lockedA from operation. .lt-is arranged to be released by the operation of any one of the bank of spetg'al or clerks keys 47 in the following manner see Fig. 4). Each of the keys 1s "protide with a laterally rojecting pin 48 which plays in a slot 49 ormed in a vertically sliding plate 50 on the lower and forward end of which is formed a notch v51 engaging a pin. 52 formed in a disk 53 fast to the aforesaid rock shaft 44. The slots 49 are diii'erentially inclined for purposes not connected with the present invention and not necessary to be here describeibut upon the depressing of any key the plate 50 will. be vertically raised by means of the pin 48 ofthe key depressed,

and thereby the notch 51 will act upon the pin 52 to rotate the disk 53 and shaft 44 and A)hereby rock the dog 43 backward out of the path of the pin 42 and thereby release the special operating key. The extent of rocking of the shaft 44 for this purpose I need be only small. and when the lowermost key 4'? is depressed the plate S0-is elevated to such an extent that the notch 51 is carried -i'arther lthan is necessary, but in such case the straight, forward side of the plate 50 simply rides by the pin 52 after having rocked the shaft l to the necessary extent, and upon the return of the plate 50 .to normal position the pin 52 again registers with the notch.

In order to lock the special operating key in depressed position there is provided a pawl 60 pivoted upon the rock shaft 61 and formed at its upper end with a nose 62 arranged to engage a square lug 63 formed u on the end of the afore mentioned pin 42 w ich projects from the key 40 as previously described. A spring 64 normally draws the locking awl 60 forward so that as soon as the specialkey is depressed the pawl will lock over the lug 63 and lock the key in deressed position. In order to release the ey, the pawl 60 is rocked rearward in the following manner. Fast upon the rock shaft 61 is an arm 65 arranged to engage a pin '66 to which the spring 64 is attached, this pin being upon the pawl 60. Also fast to the shaft 61 1s another arm 67, (see Fig. 6), to which is pivoted a link 68 which eX- tends rearward to straddle the lower operating shaft 25, and the link has formed upon it a pin 69 which projects into a cam groove 70 formed in the disk 71 fast to the shaft 25, the shape of the groove being such that immediately after the machine has been started in operation the link 68 will be ulled rearward and thereby the shaft 61 w1 l be rocked and the arm 65 will strike the pin iand force the pawl 60 rearward to v.ijelease'the s ecial operating key, which may if desired, e drawn to nor mal position by a suitable spring, but the positive return of which key is in this case secured by means vof i cam 72 (see Fig. 3) fast upon the shaft 25,' Which cam strikes an arm 73 having a slot andpin connection at 74 with therar en ofthe-ke 40 and being' suitably guided in its vertice movement by a guide piece fornied in the main frame of the machine, so that at the be 'nning of the revolution of the shaft 25 the ey 40 will be positively returned to normal position.

The lmachine is'provided with a series of amount keys 8O (see Fig. l) which have ordinary lateral pins projecting therefrom similar to the pins 48 shown on the clerks keys 47, shownin Fig. 4, and these pins play in slots 81 (see Fig. 5) formed 1n detent plates 82, there being one detent plate for each bank of amount keys, and there also being a similar plate for the special keys 47, and the shape of the slot 81 is such that the plate 82 will be moved by any key and then the lower angular portion of the slot will engage the key pin and hold the key in depressed position. Extending downward from each detent plate is an arm 83 formed on which is a pin 84 engaged by an arm 85 fast to the rock shaft 86. Fast to the rock shaft 86 is an upward extending arm 87 (see Fig. 4) to which is attached a link 88, which at its rearward end straddles the lower operating shaft 25 and has formed upon it an anti-friction roller 89 arranged to be engaged by a single tooth 90 carried by a disk fastto the shaft 25. Near the end of the operation of the machine the tooth 90 strikes the roller and by retracting,Y the link S8 rocks the shaft 36 to rock all of the arms 85 and thereby by moving the detent plates 32 releases all of thc previously op? erated keys; also fast to the shaft 36 is a downwardly extending arm 01. to which isv piyoted a link 02 resting at its forward end upon a stationary cross bar 03 of the machine. The link 02 is formed with a locking shoulder 04 which. cooperates with the previously described lug 63 formed upon the special operating key 40. Thus it will be noticed that upon the operation of any amount or special key, while the key is in the process of being depressed and before it has reached complete depressed position its detent plate will be displaced from normal lower position and therefore the shaft 80 will be rocked so as 'to carry the link 02 forward and brinlgr the shoulder 941 below the lug 63 and thus prevent the operation of the special operating key while the amount key 1s being depressed. Likewise it will be apparent that after the special operating` key 40 has been started downward the lue 63 will pass in front of the shoulder 04 and prevent the subsequent operation of any key, whereby fraudulent or improper userof the machiney is prevented. The link 88 is also provided with a lug 95, so that when any amount key is being depressed the lug 95 moves rearward and engages the locking shoulder 96 of a disk 97 fast upon the shaft 25 to prevent the turning of this shaft, and also after the shaft 25 has been partially operated the lug would abut'against the periphery of the disk 07 and prevent the operation of any key, even though the special operating; key had returned to normal position. l

The mechanism for starting the motor hy the special operating` key will now be described. Pivoted tothe rear end of the special key 40 (see Fig'. an upwardly extending link 100 which at its upper end is slotted at 101, into which slot projects a pin 102 formed upon. a bifurcated pawl 103, formed with upper and lower locking` fingers 10ft and 105 respectively.l The upper finger 10-.1- normally engages the locking` shoulder' 10G, and the lower linger 105 normally stands just below the recess 107 formed in theldisk 108 which is fast to a spring actuated contact making disk 109 shown in cross section in Fig. 1. This disk comprises a collar of insulating material 110, on the upper and left-hand portion of which is a strip of metal. or conducting material 111. This insulzling" collar surrounds a` sleeve 112 to which is attached a spring 113 which is coiled within the disk and at its other end is attached to a collar 11e `(see also Fig. 1b) which surrounds the operating shaft 28, said collar 114 normally rotating with the shaft 28 by reason of a pin 115 which projects from the shaft 28 into a slot formed in the collar 114. The spring 113 normally tends to rotate the contact disk 1109 in the direction shown by the arrow in Fig. 1, that is, when the di'sk is released and the shaft 28 remains stationary. This release of the disk is ei'ected by the pressing of the special operating key 10 which raises the link '100 and theicl/y through the pin 102 raises the pawl 103 torarry the tinnjer 10-1: forward out of contact with the locking' shoulder 100, (the recess 107 ijiermitting` the upward movement of the pawl 105), and thereupon the disk 108 carrying with it the contact disk 109 rotates until the lockingr .shoulder 100 now strikes the lower linger 105. so that the contact disk remains in this position so long as the special key 40 remains depressed and the finger 105 remains raised in contact with the shoulder 100, the contact disk having` during this movement been rotated half of one complete turn. This release and half turn of the contact disk 100 as just described brings the nietallic strip 111 into such position as to complete the circuit through the electric motor which then becomes operative to rotate the shaft 14 in a manner to be later described, and for mechanism to break the circuit at the end of one complete revolution of the operating shaft, or the normal cycle ot movement, of the machine, the following device is provided.

Fast upon the upper operating1 shaft 23 is a locking disk 120 (see Fig. 3) formed witlia notch 121 into which projects a nose 122 of a locking` pawl 123, pivoted upon the same stub shaft 121 upon which the previously described bifurcated pawl 103 is mounted, and the locking pawl is formed with a slot 125 at its pivotal connection in order to permit rearward movement of the pawl. Formed in the middle portion of the pawl 123 is a slot 126 into which projects a pin 12T projecting laterally from the bifurcated pawl 103. A spring); 123 normali Y draws the pawl 123 rearward and its nose 122 downward. AUpon the' operation of the special key 40 and the raising of the bifurcated pawl 103 in the manner previously described the pin 12T acts through the slot 126 to raise the locking pawl 123 so as to carry its nose 122 out of the recess 121 of thelocking disk 120 and thereby unlock the revelution shaft 23, so that since the contact making' disk 109 is revolved as hitherto described and the circuit is made through the motbr the shaft 28 will be free to turn under isc the iniuence of the motor. The locking pawl 123 is immediately pulled'rearward as soon as it is raised in this manner so rthat its nose 122 rests upon the periphery of the disk 120 just in the rear of the notch 121 so that the disk 120 remains unlocked, and in such position the pawl 123 acts through the slot 126 and pin 127 to hold the bifurcated pawl 103 in raised position independently of the link 100, so that said link may drop and the special key 40 be restored to upper position as previously described, but as soon as the disk has made one complete turn with the shaft 28 the notch 121 is again brought around to register with the locking nose 122 and the nose snaps into place in the notch and the pawl is pulled forward into its normalposition as shown in Fig. 3 and of course the engagement of the nose 122 with the notch 121 eiectually locks the shaft 28 from further revolution. Of course since the shaft 23 is now locked from further movement it is essential that the current shall have simultaneously been broken, and this effect is produced upon the final forward and droppingr movement of the pawl 123, this forward and dropping movement of the pawl acting through the slot 126 and pin 127 to force the bifurcated pawl 123 again downward, thereby releasing the lower finger 105 from contact with the shoulder 106 of the disk 108 and bringing the upper finger into the path of the shoulder 106, so that as soon as the disk has made another half turn, thereby completing itsv entire revolution, the contact making disk 109 is now brought back to normal position and the circuit through the motor is broken as will be later described.

It will be observed vthat thel preliminary unwinding of the spring 113 gives the contact disk 109 its first half turn, and the second half to return to normal position is cf? fected as follows: The making of the circuit through the motor gives the shaft 28 a complete turn while the contact disk remains stationary. and since the shaft 2S rotates in the same direction as the disk 109, this complete revolution of the shaft 28 has the effect of winding up the sp/ving 113 to practically one-half a turn in excess of its normal condition; but as soon as the shaft 2S has stopped and the circuit is broken by the return of the contact disk to normal position, such return ot' the contact disk to normal position takes up this additional halt' turn ot' its spring given to it by the shaft 2tand leaves the parts in normal condition, this operation being one of a partial release o't the spring, then a re-winding of the spring in excess of its necessary tension, followed by a further unwindingof the spring to restore the same to normal condition as soon as the contact disk has completed its entire revolution.

The slot 101 formed in the upper end of the link 100 permits the restoring of the key 40 to normal position in the manner previously described independently of the retention of the bifurcated pawl 103 in upper position.

The connections coperating with the contact making disk .109 for controlling the electric circuits are as follows. Referring to Fig. 1, it will be seen that there are three electrodes 130, 131 and 132 which impinge upon the contact disk 109. The various connections can be followed up more clearlyby the aid of the diagrammatic View shown in Fig. 2. Attached to the main frame of the machine vjust above the motor is a binding post block 133, in which are seated binding posts 134 to 140 inclusive. Below this binding post block is a plug 141 of insulated material formed with two binding posts 142 and 143 to which the Wires leading from. the battery 144 are arranged to be attache-il in a suitable manner. The connections are such as to'establish two operating circuits, one the motor circuit, and the other the magnetic clutch circuit. A resistance 145 is provided for varying the current in the magnetic clutch circuit and another resistance 146 is provided for varying the current in the motor circuit. 130 is a wire 150 which goes to the binding post 135 and thence by a wire 151 to the motor 10 and then by a wire 152 to the resistance 146 and thence by a wire 153 to the binding post 137. All tour binding posts 136, 137 138 and 139 are connected by a conducting strip 154, so that thereby the aforesaid wire 153 is connected with the binding post 139 and thence through the wire 155 with the binding post 143 which is connected with `the battery 144.

The electrode 132 is connected by a wire 156 with the binding post 140 and thence by a wire 157 to the binding post 1112.v The previously mentioned wire 151 is also connected with the field 158 of the motor, this field being connected through a wire 159 with the binding post 138 and thence connected to the battery by means of the aforesaid wire 155.

The electrode 131 is connected by means oi a wire 160 with the binding post 134 and thence by means of ay wire 161 with one of the previously described brushes 21 which makes contact with the wire convolutions of the magnetic clutch, and the return Wire 162 from this magnetic clutch leads to the resistance 145 and thence by a wire 163 to the binding post 136 and thus through the strip 154 is connected with the battery wire 155. The electrode 132 with its connecting wire thus forms the portion of the circuit common to both the motor and the magnetic clutch circuit, the wire 150 extending from the electrode 130 going to the motor circuit and the Connected with the electrode Wire 160 extending from' the electrode 131 going to the magnetic clutch circuit.

From these connections it results that when the contact making disk 109 is given ils half revolution as heretofore explained, the metallic strip 111 is brought,k into its lower position so that all three ofthe elec trodis 130n 131 and 132 impinge upon said metallic plate. electrodes 130 and 132 establishes the circuit through the electric motor 10 and its field as will readily be seen from following out the connections in Fig 2, and the connecting of the electrodes 131 and 132 results in the establishing of the circuit through. the brushes 21 and the magnetic clutch, and therefore as soon as the motor begins to turn l and the soft iron disk 16 begins to turn With the shaft 14 in the manner previously dcscribed the energizing of the soft iron disk 1G will cause the soft iron disk 22 to rotate with the disk 1G, this being a Well known operation of magnetic clutches. The revolution of the disk 22 and the gear 23 eiiect the revolution ol the main operating shafts 25 and 28 by ymeans of the intervening gears as already set forth, and at the end of the comn plete revolution of the shaft 28 the spring actuated 'contact disk 109 is again released as hitherto explained and iiies back to normal upper' position thereby breaking the contact at the electrodes 130, 131 and 132, and thus the current through the motor and themagnetic clutch is broken, and the parts brought to rest practically simultaneously. The roper relationship between the circuits .may se adjusted by varying the resistances 145 and 146. It it becomes necessary to tighten the spring 113 'which actuates the contact inaking disk 109, this may be accomplished when the machine is at rest by shifting the collar 114 see Fig. 1) laterally to such an extent as to Withdraw the collar from engagement with the pin 115, and then giving the collar a turn to Wind` up the spring until the slot in saidv collar is again opposite the pin 115 and the collar is shifted back to engage the pin so that thereafter both the collar and shattwvill turn together.

One of the features of the arrangement of the circuit herein is that the magnetic clutch circuit is separate from tho motorcircuit so that when the circuit is broken after 'the motor has been running, the counter electro-motive torce ci the motor ,has no elect upon the magnetic clutch cir cuit during the continued revolution ci the noter hy its own momentum, since this mag netic clutch circuit is at this time entirely broken and forms no integral part of the motor circuit; Whereas if the clutch circuit d termed such integral part of the motor circuit, than the continued revolution of 4the Thus the connecting of the' .remain applied to the machine even after it had been brought to locked home position, which would of course produce undue rackL ing and straining of the machine.

While the form of mechanism here shown and described is admirably adapted to fulfil the objects primarily stated, it is to he understood that it is not desired to confine the invention to the one form of elnbodi ment 'of the invention here disclosed for it 'is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

As a further advantage arising fromI the construction of the switch mechanism and the contact making device, it will be noted that the direction et' revolution of the spring contact plate 111 is such that the circuit is made first through the magnetic clutch and then through the motor, and the circuit is also broken first through the clutch before it is broken in thenrotor circuit, so that at the time when the motor circuit is broken, the clutch circuit has already been broken and the magnetic clutch is practically dead. This results in throwing the load oli of thc motor before the motor circuit is broken, and this materially assists in decreasing the sparking at the contact points. Even though a mechanical clutch were used, 'this same sequence might be followed in which the breaking of the motor circuit takes place as an .immediate subsequent accompaniment to the breaking of theclntch connection be-` tween the motor and the driven machine.

The subject matter claimed is as follows: 1. In an electric driving device, the comv bination with an electric motor and a machine driven by said motor, .of a circuit for said motor, a magnet-io clutch for connecting said motor to said driven machine, a

shunt fromsaid motor circuit including said clutch, and a spring operated contact piece for opening and closing said shunt and said motor circuits successively.

2. 1n an electric driving device, the conibination with an electric motor, and circuit therefor, of a machine driven by said motor, a circuit divided from said motor circuit and containing a magnetic clutch, Which clutch connects the motor to 'the machine driven thereby; and a spring operated contact device t'or automatically breaking said motor circuit as an immediate subsequent accompaniment to the breaking of 'the clutch circuit. I

3. Inl an electric driving device, the combination with an electric driving motor, a machine driven by said motor and a magnetic clutch for connecting'the motor to the driven machine, of a main circuit including the source of electric energy; a divided circuit containing in one branch the motor, and in the other branch the magnetic clutch; and a rotating three point contact piece connecting the main circuit, the motor circuit, and the magnetic clutch circuit, constructed to disconnect said clutch circuit and said motor circuit separately and in immediate succession, from said main circuit.

Il. In an electric driving device, the coinbination with `an electric driving motor, a machine driven by said motor and, a magnetic clutch for connecting the motor to the driven machine, of a main circuit including I the source of electric energy; adivided circuit containing in one branch the motor, and inthe other branch the magnetic clutch; a three point switch between the main circuit, the motor circuit, and the magnetic clutch circuit, whereby when said switch is open said motor and said clutch will be disconnected both from the main circuit and from each other; and means for automatically operating said switch to break the motor cir cuit subsequently to the breaking of the clutch circuit.

5. In an electric `lriving device the combination with a driving motor, o' a driven member; a magnetic clutch connecting said motor and said driven member, said clutch containing clutch coils; a circuit including said clutch coils; a circuit including said motor; and means for automatically making and breaking said motor circuit subsequently to the making and breaking of said clutch circuit.

6. In an electric Adriving device, the combination with a driving motor, of a driven member; a clutch for connecting said motor to said driven member to drive the latter by the former; a circuitl for said motor; and means for automatically breaking said motor circuit as an immediate subsequent accompaniment to the breaking of the clutch connection between said motor and said' driven member.

7. In an electric driving device, the combination with a driving motor, of a driven n n I member; a clutch for connecting said motor to said driven member to drive the latter by nthe former; acircuit for said motor; and

means .for automatically making and breaking said motor circuit sequentially to the.

corresponding making and breaking of the clutch connections between said motor and said driven member.

8. n an electric driving device, the com- VYbin'ation with a driving niotor,rof ac'ircuit including said motor; a contactndevice for establishing the circuit through the motor; a spring for actuating said contact device;

means for releasing said spring to make the circuit through said motor; means connect ed with the motor for restoring Athe tension in the spring beyond its normal amount; and means for subsequently releasing said spring to again actuate the contact device to .break the circuit through the motor.

9. In an electric driving device. thecombination with a driving motor, of a circuit including said motor; a revoluble contact plate for establishing a circuit through said motor; a revoluble shaft on which said contact plate is mounted; a spring connected to said plate and to said revoluble shaft; means for releasing said spring to permit the contact plate to move to establish the circuit; and means connected with the motor for driving said revcluble shaft and thereby re winding said spring.,

10. In an electric driving device, the combination with a driving motor, of a' circuit including said motor; a revoluble contact plate for establishing a circuit through said motor; a revoluble shaft on which said contact plate is mounted; a spring connected to said plate and to said revoluble shaft; means for releasing said spring to permit the contact plate to move to establish the circuit; means connected with the inoto'i' for driving said revolublc` shaft thereby rewinding said spring beyond its normal tension; and means for subsequently releasing said spring to cause the contact plate to move out of contacit making position.

11. In iin electric driving device, the combination with a driving motor, of a driven meinber; a circuit for said motor; a locking member for said driven member; a spring contact device and electrical connections for controlling the establishment of the motoi circuit; manipulative means for operating said locking member and said s ring contact making device; and adjusta le means for varying the relative timing between the unlocking ot' *said lockingrmember and the contact'making of said spring device.

l2. In an electric driving device, the conibination with a driving motor, cfa driven member; a circuit Enr said motor; a' locking member for said driven member 'a spring Contact device and electrical connections for controlling the establishment'ot the motor circuit; manipulative means for operating said locking member and said spring contact making device; and means hoi"\adjListing the. tension ot said spring contact device whereby to Vary the relative timing of the unlocking of, the driven member and the making of the contact by the spring device.

13. In van electric driving device, the combination with a driving motor, of a circuit including said motor; a spring actuated revolnble contact cylinder `for making and breaking the motor circuit; a pallet for en gaging sid cylinder to etiect an intermit-- tent motion thereof to make and break said circuit; and a motor key for controlling said pallet'.

l ll. In an electric driving device, the combination with a driving motor, of a circuit including said motor; a spring actuated revoluble contact' cylinder for making and breaking the motor circuit: a pallet for cngaging said cylinder to ctl'ect an intermittent motion thereof to make and break said circuit; a locking pawl tor locking the machine driven b v said motor: and means for controlling said pallet by said locking pa'ivl,

15. In an electric driving device. `the combination with a driving motor, of a -circuit including said motor; a spring actuated revoluble contact cylinder for making and breaking the motor circuit; a pallet ,tor engaging said cylinder to etfect an intermittent motion thereof to make and break said circuit; a locking pau'l for locking the machine driven by said motor; a motor key for operatingl said pallet to release the contact cylinder to make the motor circuit; and means connecting said locking paivl and said pallet to operate the latter to again release said cylinder to break the motor circuit.

16. In an electric driving device for regis tering machines, the combination with a driving motor, of a driven member; a circuit for saidmotor; a locking member for locking said driven member; and means operated by said locking member yfor breaking the motor circuit. i

l?. In an electric driving device for regis- -tering machines, the combination with a motor, ot' ay driven member operated by said motor; a circuit lfor said motor; a locking pawl for locking the driven member; a switch for said motor circuit; manipulative means for operatine' said switch to close the motor circuit; andj means connected with said pawl to operate said switch to break the `motor circuit.

18. In an electric driving device for 1na chines the combination with a series of keys, a driven machine, a motor for driving said machine, a circuit for said motorgand a motor key for controlling said motorfcircuit; of means for lock-ing said motor key while any one of said first keys is being de resscd and for also locking said lirst keys a ter the motor key has been operated.A

19. In an electric driving device, the com bination with a driven machine, an electric motor for driving same, and a. motor circuit including a switch contact, of a rotatable contact making disk, a latch normally holdingsaid disk, a spring for moving said disk when the same is released to cause making of said contact, means for releasing said latch, and means for finally permitting the return of said latch to its ori inal position, thereby causing breaking osaid switch contact.

1 20. In an electric jdriving device, the combination with a driven machine, an electric moti-or for driving same, and a motor circuit including a. switch' contact, of a spring kactuated contact rcontrolling device, means normally holding saidl controlling device against movement. with the spring under tension, devices for moving said holding means to releasing position and thereby permitting said controlling device to cause closing of said switch contact. and means for again tensioning the spring by movementof said motor. i

21. In an electric driving device, the combination with a driven machine, an elect-ric motor :tor driving same, and motor circuit including a 'switch contact, of a rotating switch contact controlling disk, a spring normall latch normally holding said controlling disk against rotation,M a manually Voperated element for releasing said latch to permit said contact controlling device to rotate and thereby to close said switch contact, and means for restoring said latch to position to obstruct said contact controlling disk and thereby permit opening of said switch contact.

Q2. vIn an electric driving device, the com bination with a driven machine, a driving motor therefor, and a circuit for said motor including a switch Contact, of a movable switch. contact controlling device having a spring for operating same normally under tension, a latch normally holding said switch co trolling device, manipulative means for reasing said latch, connections whereby m fement of said motor tensions said spring, and devices whereby said latch is restored to ilatching position. to obstruct said switch controlling device and thereby permit said switch contact to break saidcircuits.

23. In an electric driving device, the combination with a driving motor and a-circnit for same including a switch contact, ot a rotatable switch Contact controlling plate, a spring for rotating said controlling plate normally under tension and means for giving tension 'to said spring by movement of said motor.

Ql. In an electric driving device, the comn bination with a driving motor and a circuit lfor same including a switch contact, of a rotatable switch contact; controlling plate,

a. spring actuating said controlling' plate,

means .tor tensioning said spring by movement oi. the motor, and hand operated de vices for controlling said controlling plate.

In an electric driving device, the com bination with a driving motor, of a circuit including said motor, a member driven by the motor, a spring actuated contact device for establishing the circuit through the motor to drive the driven member, means 'normally leckingf" the driven member,

under tension to rotate said disk, a..v

llo

manipulative devices controlling lthe opera- ,tion of the locking means, and means controlled byY the return of the locking means to locking position for disestablishing-the` circuit through the motor.

26. In an electric driving device, the combination with a driving motor, of a circuit including said motor, a contact device for establishing the circuit through the motor, a spring for actua/ting said device, a member driven by said motor, means connected with the member for tensioning the spring, means normally locking said member, manipulative devices and connections for operating the locking means, and means controlled by the return of the locking means to locking p0- sition for disestablisliing the circuit through the motor. A

27. In an electric driviugdevice, the combination with a driving motor, of a driven member, a normally inoperative clutch between the said motor and 'driven member, a circuit for the motor, means normally locking the driven member, manipulative devices rendering the clutch operative, establishing thecircuit for the motor and unlocking thel driven member, and means controlled by the locking means for breaking the motor circuit'and renderin the clutch inoperative.

28. In an electric driving device, the combination with a driving motor, of a circuit including said motor, a rotatable element driven by said motor, a plate mounted on said element and controlling the establishy ment of the circuit through the motor, a normally tensioned s ring for driving said plate, means normaliJ from movement by the spring, manipulative devices controlling tlie unlatching of said Adevice to enable the latter to be moved kby y latching the device;

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