US910690A - Driving mechanism for registering-machines. - Google Patents

Description

O. F. KETTERING. DRIVING MECHANISM FOR REGISTERING MAGHINES.

APPLICATION FILED JUNE 9,1905

Patented Jan. 1909.

3 SHEETS-SHEET L wwptoz W1 inc-sacs G. F. KETTERING. I DRIVING MECHANISM FOR REGISTERING MACHINES. APPLICATION FILED JUNE 9,1905.

91 0,690. Patented Jan. 26, 1909.

3 SHEETS-SHEET 2.

LA LA G. P. KETTERING.

DRIVING MEGHANISM FOR REGISTERING MACHINES.

APPLICATION FILED JUNE 9,1905.

910 690. v Patented Jan.26,1909.

a; 3 SHEETS-SHEET 3 l I Q wine ocs v q r a, ecwtoiz my v v WQI M NITED STATES? PATENT OFFICE.

CHARLES F. KETTERING, OF DAYTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE NATIONAL CASH REGISTER (INCORPORATED IN 1906.)

COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO,

DRIVING MECHANISM FOR RE GISTERING-MACHIN ES. 7

Specification of Letters Patent.

Patented Jan. 26, 1909.

Application filed June 9, 1905. Serial N 0. 264,412.

. scription'.

This invention relates to improvements in driving mechanism for cash registers, adding I machines and analogous machines, and has among its objects to provide upon the an electric form of driving mechanism which shall beeconomical and eflicient in construction and capable of great durability and shall be free from undesirable and excessive sparking making and breaking of the electric currents.

In the specific form which the present invention has assumed there is an electric mos tor which is adapted to drive the main driving shaft of a cash register, the connection between the motor and the driving shaft being effected by means of a magnetic clutch, and upon the depression of one of a series of special keys ofthe cash register, an auxiliar circuit is made through this clutch and likewise through a magnetic switch which is in series with the clutch, which switch thereupon makes the main circuit through the motor to start the latter and thereby operate the machine, the magnetic clutch having been previously excited, and at the end of a complete operation of the machine, the circuit through the magnetic clutch and magnetically operated switch is first broken so that upon the return of the switch to normal position the current through the electric motor is broken but in the meantime the magnetic clutch has become dead so that upon the breaking of the motor circuit there is practically no load upon the motor and the sparking at the switch electrodes is thereby minimized to a marked degree.

' The invention also comprises certain improvements in the method of establishing the circuit through said clutch upon the depression of one of the special keys, and also includes certain improvements connected with the circuit establishing devices controlled by said special keys.

Wlt-h these and incidental objects in view, the invention consists in certain novel feaing the machine.

tures of construction and combination of parts, the essential elements of which are set forth in appended claims and a preferred form of embodiment of which is hereinafter specifically described with reference to the drawings which accompany and form part of this specification.

Of said drawings:

Figure 1 represents an 'end elevation of the cash register to which this electric driving mechanism is appl ed showing the electric motor in dotted outlme and certain of the driving gears. Flg. 1 represents a detail view of a restoring pawl. Fig. 2 represents a of the drivin gearing, the motor and certam other parts being omitted for the sake of clearness. Figs. 3 and 3 "represent detail views of certain of the machine unlocking and circuit establishing devices.

Fig. 4 represents a fragmentary detail view of the bank of special keys for unlocking the machine and establishing the circuit for operat- Fig. 5 represents a d1a grammatic view of the electrical connections. The articular type of cash register to which this invention is shown as applied in the present case, is now well known vmthe art and appears in a large number of prior patents such for example as patent to Cleal and Reinhard, No. 580,378, dated April 13, 1897: and hence it will not be necessary to go into a detailed description of the construction and operation of the cash register proper, for the present invention is concerned primarily with the electric drlving mechanism, which driving mechanism may well be applied to any form of cash register or analogous registerin machine, only one of the various banks 0 keys being utilized in the present improvements, for the purpose of establishing the motor circuit to cause the motor to operate the cash register in place of a crank handle such as hitherto has been customarily used to drive the machine. I

The electric driving motor 10 is shown in dotted outline in Fig. 1. The mam shaft 11 of this motor drives the Worm gear 12 (see also fig. 2), which gear is fast to ahollowed disk 13. containing the coils of a magnetlc clutch. This worm gear 12; and clutch disk 13 revolve loosely upon a shaft 14, and side by side with said clutch disk 13 is a soft iron disk 15 fast to a collar 16 surrounding said rear elevation of a portion register.

shaft 14 and turning loosely thereon, to 'the other end of which collar is made fast a car wheel 17 which meshes with the gear w eel 18 fast upon the side of a largergear Wheel 19 both fast to a shaft 20 which is the main driving shaft of the machine; and. the gear wheel. 19 meshes with an upper gear wheel 21 which is fast upon the end of a second transverse shaft 22 of the machine. Thus when the circuit is established through the motor and the magnetic clutch, the drivin of the worm ear 12-and clutch disk 13 wi carry therewith the soft iron disk 15 and thus drive the gears 17, 18, 19 and 21 and thus operate the driving shaft 20 and 22 of the cash register to perform the various functions w ch are customarily performed in machines of this character by the operation of the machine subse uent to the o eration of the transaction 3 The main driving mechanism of the machine however is ordinarily locked and is unlocked by the operation of any one of a bank of s ecial keys, which may be clerks keys or epartment keys or. any other classification which may be desired, and these specia keys also, as an accompaniment to the -unlocking of the machine, causes'the making of certain circuits to cause the motor to operate and excite the clutch to connect the motor to the main drivin shaft of the cash This normal 100 'ng of the driving mechanism of the cash register is effected by means of a locking disk which is fast upon .one of. the special keys the aforesaid shaft 22 and slightly spaced apart from the aforesaid gear w ee 21 so as to-per'mit room for the intervening latching pawl 31, which is pivoted loosely'on the shaft 22 and is provided with a latching nose 32 and is s'prmgpressed by means of a spring 33 to rotate t e pawl to carry the projection on the opposite side thereto against the stop pin 34. Thelocking disk 30 is formed with a locking shoulder 35 which is engaged by an upwardly projecting nose 36 of a lockin lever 37 shown in detail in.

Fig. 3', which ever has a forwardly extending foot 38 which cooperates with certain release key mechanism as will later be de scribed. A spring 39 normally holds the lever 37 so as to carry the nose 36 into engagement with the locking shoulder 35 so that the advance rotatin movement of the gear wheel 21 (as shown by the direction of the arrow) is prevented and the machine is thereby normally locked. The mechanism for releasing this look by the operation of now scribed. The bank of special keys 40 (see Fig. 4) cooperate with a key detent 41 so that upon the depression of any key the detent will be moved upward slightly in a well known manner, the detent being subsequently locked to retain the key in depressed position, by mechanism not shown herein etermining e ements.-.

rints the locking lever comp be de' but described inthe aforesaid patent.

detent carries a lug 42 which acts u on the beveled edge of a curved arm 43 w en the detent is ralsed b the depression of the key e shaft 44. This shaft 44 whereby to rock t to theother side of the extends through machine and, as shown in Fig. 1 has fast u on its right hand end'a tripping lever. 45,-

s own also in detail in Fi 3. On the rearward end of this tripping Tever is a laterally projecting pin 46 which normally stands ust above a dog 47 which is pivoted upon the side of the aforesaid locking lever37, as shown in Fig. 3*, and a spring 48 normally holds the upper end of the dog 47 forward in the position shown in Figs. 1 and 3 The tripping lever is also formed with an upwardly extending beveled nose 50 which 006 erates with a beveled wall 51 of a recess 52 ormed in a disk 53 fast upon the upper shaft 22 (see also Fig. 3).

When one of the s ecial keys is depressed and the shaft 44 roc red: in the manner just described, the rearward end of the tripping lever 45 is rocked downward, and the pin 46 l strikes the upper end of the dog 47 and thereby forces downward the rearward end of the locking lever 37 so as to withdraw its locking nose 36 from contact with the locking shoulder 35 and thereby unlock the machine; and the nose 36 is carried downward far enough to permit the latching pawl 31 to spring forward and over the anti-friction roller 32 projectin laterally from such locking nose 36 so as t ereby to hold the locking lever 37 in depressed and unlocking position. The driving gears of the cash register are now unlocked and free to be rotated by the electric motor, in the direction shown by the arrows, and rior to the complete rotation of the shaft 22 the clerks keys 40 are released in a well known manner and the shaft 44 returns to normal position thereby permitting the tripping lever 45 to return to normal upper position under the tension of its spring 45" attached to the forward end thereof; and this also per- 37 to return to normal locking position under the tension of its sprin etes its revolution, the nose 37 forces itsel up into its correspondin recess in said disk and again locks the shou der 35, and at the same time-the roller 32 carries the latching pawl 31 back to normal position against the tension of its s ring 33 so that the machine is now locke plete revolution. ln order to revent the machine from remaining unloc ed by retaining the special key 40 in depressed position, which might occur either through intentional manipulation or carelessness by holding down on the s ecial key, the aforesaid disk 33 is provided.

39 so that when the locking disk 30 at the end of such com- I the arrow, the beveled wall 51 strikes the nose 50 and carries the tripping lever still further, downward, and the location of the pin 46 with reference to the dog 47 upon which it impinges, is-such that this further or secondary movement of the tripping lever 45 and pin 46-causes the pin to wipe past the forward edge of the dog 47 so as now to, assume a position in front ofsaiddog'a'nd thus afford noblocking obstruction to the return of th'elocking lever 37 to normal locking posi- '37 has been disabled, and the machine cannot again be operated untilthis special key is released to allow the pin 46 to return to normal upper position, in which case it again wipes by the dog 47 and the dog springs forward under the pin and thereby the parts are in normal positlon.

For the purpose of positively restoring the locking lever 37 tov locking position near the completion of the operation of the machine, the aforesaid soft iron disk 15 is provided with a laterally projecting anti-friction roller 60 which strikes a dog 61 pivoted upon a laterally projecting pin 62 extending from the side of the rearward end of the lever 37.

' The dog 61 is formed with an'enlarged aperposition, and then the pin 60 ture 63 which surrounds a pin 64 projecting laterally from the lever 37 so as to permit a slight degree of movement of the dog. Near the end of the rotation of the disk 15 thepin 60 strikes the lowerend -of the dog 61 and carries the same against the pin 64, swinging about the pivotal pin 62 and thereby lifts the locking lever 37 positively into looking wipes by the dog 61 and the dog drops back under its own wel ht to normal position as shown in Fig. 1.

T e ordinary form of key release is provided com rising a'hand lever mounted upon a. rocr shaft 71 and having a slot and' pin connection with the lowerend of a lever 72 which is pivoted at its middle point and at its upper end carries a pin 73 which cooperates with the aforesaid foot 83 of the lever 37 v This key release lever 70 when depressed rocks the shaft 71 to release all of the key detents of the machine so as to restore to normal osition any of the previously depressed eys and thus permit the correction of errors, which mechanism is well known in the art, and the addition of the lever 72 is for the purpose of preventing the unlocking of the machine by the special keys while the key release is being operated, this taking placeby reason of the fact that the pin 73 is thereby carried over the foot 38 and prevents the rocking of the locking lever 37'to unlock the machine; and reversely, when the locking lever 37 is once depressed to unlock the machine the foot 38 stands in the rear of the pin 73 and revents the key release from being operated A spring 74 normally holds the lever 72 in the position shown in Fig. 1.

The electric connections for starting the motor will now be described with the aid of the diagrammatic Fig. 5. Fastened at one end upon the insulation block (see Fig. 1) is a spring electrode strip of metal 81 which extends rearward and rests upon an insulated cam roller 82 carried upon the aforesaid pin 62 which projects laterally from the side of the aforesaid locking lever 37. -Upon the opposite end of the block 80 is a raised electrode or terminal 83. A lead-wire 84 connects the spring 81 with the main battery 85 (see Fig. 5), and a lead-wire 86 connects the terminal 83 with the coils of the magnetic clutch 87. These ,coils 87 of the magnetic clutch are contained withiri the aforesaid clutch disk 13, and are in series with a magnetic switch which will now be described. This switch comprises a casing 90 (see Figs. 1 and 2) containing the magnetic solenoid coil 91 (see Fig. 5); this coil being in series with the magnetic clutch coils 87 and the battery 85. The energizing of the'solenoid coil 91 magnetizes its core 92 and draws downward the pivoted armature 93 carrying the contact making roller 94, which roller whencarried downward strikes against two spring contact terminals 95 and 96. The lead-wire connects the'electrode 95 with the motor'lO (see Fig. 5), and the lead-wire 101 connectsthe electrode 96 with the main battery 85, and the solenoid coil 91 is also connected at the point 102 with said electrode and said lead-wire 101. 103 (see Fig. 5) constitutes the original shunt field for the motor 10. The operation of these circuit making devices will now be described. When the locking lever'37 is rocked downwardin the manner heretofore described to unlock the machine, the insulated roller 82 is of course also carried downward, and the spring electrode 8l resting-thereon is now free to descend under its own spring tension and make the contact with the terni-inal 83. From Fig. 5 it will be seen that this completes the circuit through the battery 85 the magnetic coils 87 the magnetic switch solcnoid 91 and the lead-wire 101, and thereby the core 92 of the magnetic switch is 1nagnetized and draws downward the armature 93 against the tension of its spring 97, and this causes the roller 94 to bridge across the contact between the spring contact electrodes 95 and 96 which of course are mounted upon a suitable insulated block98. This making of the connection between the elec trodes 95 and 96 now establishes the main circuit through the motor 10, this motor circuit being now a divided circuit between the points 102 and 104 (see the other branch of the dividedcircuit being the magnetic clutch and the magnetic switch solenoid coil. The circuit now being made through the motdr the motor revolves its shaft 11 arid'through the caring/above described operates the machine to turn the main driving shafts thereof one complete revolution, and as above set. forth, near the end of such revolution the locking lever 37 is forced backward to normal locking osition, and theinsulated cam roller 82 is t e'n carried upward a aim to force the spring contact strip 81 OK of its terminal 83 and thus break the circuit through the magnetic clutch and the magnetic switch solenoid, so that the sprin armature 92 is immediately released and t us the current thrdugh the motor is then broken, and the machine thereby is automatically locked and the motor circuit this circuitthrough the clutch;and likewise the clutch circuit is broken, near the end of the operation of the machine before the motor circuit is broken, so that when the motor circuit is broken the magnetic clutch is practically dead and there is no load upon the -motor. Although of course these intervals of time between the making of the clutch circuit and the main motor circuit are practicall inappreciable, yet there is nevertheless sue a'sequence in themaking of these two circuits that the making of the motor circuit subsequently'to the clutch circuit minimizes the sparking at the spring electrode strip 81 and terminal 83, and the breakin of the the strip makes its contact by reason of its motor circuit subsequently-t0 the making of the clutch circuit when there is no load on the machine also minimizes the sparking both at the terminal 83 and at the motor circuit terminals and 96. A further advantage to be pointed out in the use of the spring contact strip 81 is that own s ring tension, and the pressure of'the specia key forreleasing the machine does not have to be utilized to exert addltional force to carry the circuit making contacts together; and more especially does its spring strip construction'present an advantage in that it permits the contact surfaces to be free from excessive wear due to excessive pressure thereon byany positively actuated,

be given a further movement to disable the efl'ect of the tripping lever u on'the locking lever in the manner describe if this further.

or secondary movement gave also a still further movement to any contact making devices it would cause undue pressure between the same-and also a slidi of the contact points over each other which would cause rapid wear'of such contact points and make thesame unsatisfactory from a commercial stand oint of durability; and thus it is obvioust at the making of the contact by the s ring strip due to its own tension has these ecided advantages over a positively operated contact making devices.

It is to be observed from Fig. 1 that the aforesaid insulated cam roller 82 is eccentrically pivoted upon this in 62, and the purose of this is so that tiie rollermay be adusted about its ivotal point and held in adjusted position by a suitable nut and thus norrrally hold the contact making strip 81 nearer or further away from its terminal 83 so as thereby to regulate the,time of making and breaking the circuit. through the magnetic clutch relatively to the unlockin and locking movement pfthe lever'37, an this also avoids thenecessity of constantly bending the s ring strip 81 to secure the proper timing a ustment.

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

Havmg' thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In an electric driving device, the combination with a driving motor, of a driven member; a ma netic clutch connecting said motorand sai driven member, said clutch including clutch coils; a magnet operated switch containing magnetic coils; a circuit including said clutch coils and said magnet coils in series; and a circuit including said 'motor, which circuit is made and broken by said magnetically operated switch.

2. In an electric driving device, the combination with a driving motor, of a driven member; a ma etic clutch connecting'said motor and sai con-tainin clutch coils; a magnetically operated switch containing magnetic coils; and a divided circuit arrangement comprising in one branch the driving motor, and in the other; branch the clutch coils and the mag netic coils,- said magnetic switch .servingto driven member, said clutch driving motor, of a driven member of said registering machine; a magnetic clutch connectin said motor and said driven member, said cutch including clutch coils; a magnetically operated switch including magnetic coils; a circuit including said clutch coils and said magnetic coils in series; a circuit including said motor, which circuit is made and broken by said magnetically op erated switch; manipulative means connected with the registering machine for making' .the circuit in the clutch coils and the magnetic coils; and means for automatically breaking the latter circuit at the end of the complete operation of the machine.

-5. In an electric driving device, the combination with a driving motor, of a normally locked mechanism operated thereby, a circuit including said motor, a spring contact device for completing said circuit, manipulative means for controlling the position of said contact device and unlocking said mechanism, and means operated by said mechanism for restoring the spring contact device to normal position and again locking the mechanism.

6. In an electric driving device, the combination with an electric motor, of a normally locked mechanism driven thereby, a circuit including said motor, a spring contact arranged to close said circuit, manipulative means and connections for permitting said contact to close said circuit and also releasing said mechanism, and an anti-friction roller carried by said mechanism and serving to restore said spring contact and again lock the mechanism.

7. In an electric driving device, the combination with a driving motor, of a driven member, a magnetic clutch connecting said motor and said driven member; said clutch containing clutch coils; a magnetically'o erated switch containing magnetic coilg; a circuit including said clutch coils and said ma netic coils in series; a circuit .including sai motor which circuit is made and broken by said magnetically operated switch; a spring contact making device for establishing the circuit in the clutch coils and magnetic coils; and means for controlling the position of said spring contact device.

8. In an electric driving device, the combinationavith a driving motor, of a normally locked driven member; a circuit including said motor; a contact making device for controlling the establishment of the circuit through the motor, said contact device comprising a spring strip and a contact making terminal in proximity thereto; means for normally retaining said strip'from contact making position with said terminal; and manipulative means for disabling said retaining means to permit said strip to rest upon said terminal and serving to unlock the driven member.

9. In an electric driving device for registering machines, the combination with a driving motor, of a driven member of said machine; a circuit including said motor; a locking member for said driven member; a tripping member for operating said locking member; manipulative means for giving said tripping member an initial movement to actuate said locking member and thereby unlock said driven member and effect the making of the motor circuit; and means for giving said tripping member a secondary movement, with provisions for causing this secondary movement to disable the effectiveness of the tripping member upon said looking member.

10. In an electric device for registering machines, the combination with a driving motor, of a driven member of saidregistering machine; a circuit for said motor; a looking lever for engaging said driven member to normally look the same; atripping lever for operating said locking leverito unlock the machine; a dog carried by said locking lever and operated upon by said tripping lever; manipulative means for giving said tripping lever an initial movement to act upon said dog and unlock the machine and effect the making of the motor circuit; and means connected with said driven member for giving said tripping lever a secondary movement whereby to free the 'same from said dog and permit the locking lever to automatically return to locking position. i

11. In an electric device for registering machines, the combination with a driving motor, of a driven member of said registering machine; a circuit for said motor; a locking lever for engaging said driven member to normally lock the same; a tripping lever for operating said locking lever, to unlock the machine; a dog carried bysaid locking lever and operated upon by said, tripping lever; manipulative means for giving sald tripping lever an initial movement to act upon said dog and unlock the machine and effect the making of the motor circuit; a spring contact strip and cooperating terminal in proximity thereto with electrical connections for controlling the making of the motor circuit; and

4 controlle trolling magn .5 the strip to make contact with its terminal when thelever is inunlocked position.-

12. In an electric device for registering machines, the combination with a driving motor, of a driven; member of said register- 10 ing machine; a circuit for said motor; a looking lever for en aging said driven member to normally look t e same; a trippinglever. for operating saidbcking'Te vEr to unlock the machine'f'a dog carried by said lock lever and o erated upon by said tripping lever manipu ative means for giving said tripping lever an initial movement to act upon sald dog and unlock the machine and eiiect the making of the motor circuit; a restoring dog carried by 2 said lockin lever; and-provislons connected w1th said riv'en member for actuating said restoring dog to positively restore the locking lever to normal locking position. j 13. In an electric drivin device, the combination with a driving member, of a driv en member, a circuit for said motor; a locking member forsa'iddriven member -;a spring contact making strip in proximity to a terminal and having electrical-connections for eilectlng the establishmentof the motor circuit; provisions connected with said locking member for normally holding said strip out of contact with its terminal; and means connected with said provisions for varying the normal extent of se aration between said strip and its termina whereby to .vary the timing between theunlocking movement of the locking member and the contact making of said spring stri a 1 Inan electric driving device, the combination with a driving motor, and an operat: in mechanism driven thereby, of amagnetical y controlled clutch for connecting said motor and o crating mechanism, a magnetically 3 switch, a circuit for operating said clutch and switch, and a motorclrcuit includingsai switch. i

'15. In an electric driving device, the combination with a driving motor and an operating mechanism driven thereby, of a magnetically controlled clutch for connecting said motorand o crating mechanism, a magnetically controlle switch, a circuit for operating said clutch and switch, and having a branch in- 5 5 cluding the switch andthe motor. 1

16. In electric driving device, the combination witha drivin motorand a mechanism driven thereby, o a magneticclutch for connectin the .mechanism to the motor, a

switch an a controllin magnet for same and,

a circuit including s ai clutch and said conet and having a branch includ- 17. In an electric driving device,the com bination with a driving motor, of a mechani'sm driven thereby, a clutch for connecting said mechanism to the motor, a circuit closer for the motor, and a circuit 0 erating said clutch and circuit. closer, there close the motor circuit.

18. In an electric driving device, the comy serving to 1 bination with an electric motor, of an operating mechanism driven thereby, a clutch for connecting said mechanism to the motor, a circuit closer,.-a circuit operating'said clutch andcircuit closer and a branch circuit including said circuit closerand motor.

19. In an electric driving device, the combination with an electric motor, and an operating mechanism arranged to bedriven thereby, of a magnetic clutch for connecting said mechanism to said motor, a circuit closer for said motor, and a circuit including said clutch and serving to operate the circuit closer.

20. In an electric driving device, the combination with a motor and a mechanism arranged to be driven thereby, of a magnetic clutch for connecting said mechanism to said motor, a circuit closer for said motor, and a circuit including said clutch and serving to operate the circuit closer and having a branch including the ,circuit closer and the motor.

21. In an electric driting device, the com-.

bination with an electric motor, of a device vent the return of the circuit closer until the movement of the machine has been completed.-

h 22. In 11 electric driving device, the combination with an electric motor, of an operating mechanism arranged to be driven thereby, a disk having a de ression and movable with the operating mec anism, a main circuit closer for said motor with means for operating it, said means being prevented from operation. except after the disk has made a complete movement. s

23. In an electric driving device, the combination with an electric motor, of a mechananism driven thereby, a circuit closer for said motor, an arm normally holding said closer in circuit breakin position but which when moved permits 0 using of the circuit, and means operated bysaid driven mechanism for positlvely restoring said arm to normal i 24. ;In an electric driving device, the comcircuit closer to circuit breaking position.

bination with an electric motor, of a mech-,

anism driven thereby, a spring circuit closer for said motor normally under tension, means normally holding said closer in circuit break-- ing position, but which when moved permits:

Isuchcircuit closer to follow it to closin' position, and means for positively restoring said holding means to normal position, and thereby positively moving said circuit closer to circuit breaking position.

25. In an electric driving device, the combination with an electric motor, and a mechanism driven thereby, of a closer for the circuit of said motor comprising a spring contact, an arm carrying a roller for engaging said spring contact and having a projection, a second arm and a pawl thereon engaging said projection, and means operated by said driven mechanism for moving said second arm in one direction to restore said circuit closer to breaking position. I

26. In an electric driving device, the combination with an electric motor, and a mechanism driven thereby, of a circuit closer for said motor, a pivoted arm controlling said circuit closer, said arm carrying at oneend a locking device for the driven mechanism and at the other end being pointed, and a manipulative device having a projection positioned ing same, connections between said cam lever and said lockin lever, an electric motor and a circuit there or, a clutch device for connecting said motor to said operating mechanism, a circuit closer controlled from said locking lever, and means actuated by the operat' ing mechanism for restoring the locking lever to locking position and thereby moving said circuit closer to circuitb reakingposition.

In testimony whereof I aflix my signature in the presence of two witnesses.

CHARLES F. KETTERING. Witnesses:

WM. 0. HENDERSON, S. P. DAvIs.

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