US1851267A - Combined electrical and manual driving means - Google Patents

Description

March 29, 1932.` A. s. WHEELBARGER COMBINED ELECTRICAL AND MANUAL DRIVING MEANS Filed Maren 1 8.; 1.927 5 sheets-sheet 1 Wwf/vrai?. AL 55H75 :fw/fa 549602 L4 Tra/MEX March 29, 1932. A. s. WHEELBARGER COMBINED ELECTRICAL AND MANUAL DRIVING MEANS Filed March 18,

1927 5 Sheets-Sheet 2 .4 TTOP/VEY March 29, 1932. A, s. WHEELBARGER 1,851,267

COMBINED ELECTRICAL AND MANUAL DRIVING MEANS Filed March 18. 1927 5 Sheets-Sheet 4 /4 TTRNE Y March 29,1932. A1 s WHEELBARGER' 1,851,267

COMBINED ELECTRICAL AND MANUAL DRIVING MEANS Filed March 18. 1927 5 Sheets-Sheet 5 Patented Mar. 29, 1932 UNITED STATES PATENT ori-ICE t ALBERT S. WHEELBARGER, OF DAYTON, OHIO, ASSIGNOR TO OHMEB FARE REGISTER COMPANY, F DAYTON, OHIO COMBINED ELECTRICAL AND MANUAL DRIVING MEANS Application led March 18, 1927. Serial No. 176,516.

The object of this invention is to provide an improved electrical or manual operating means for registers such as cash registers, ticket issuing machines, or for any other kind of machine. By way of illustration I have shown it as applied to that type o ticket issuing machine shown in the application of Albert S. Wheelbarger and Grover C. Coil, Serial No. 65,532, tiled October 29, 1925.

More specifically, my invention relates to a driving means which 'may be either electrically or manually operated, or may be partly operated by electrical means and the operation completed by manual means or vice versa.

One of the objects of the invention is to provide an improved electrical means which will drive the machine only once when the.

switch is closed so that if the switch operating member should be held in depressed. position which would normally close the switch, the switch would be opened after one complete operation of the machine. This is im- "I portant so that two registrations on a cash register or two tickets from a ticket issuing machine would not be registered or issued accidentally, as, vfor instance, when the operatorkpressed the switch controlling member too long.

Another object of the invention is to cut'oii" all electrical connections after the machine has been operated. A

Another object of the invention is to provide means whereby the operating means is always stopped in the same position; that is, the position in whichl the parts should be after one complete operation so that by inertia they will not. be carried beyond the position in which they should be. This is very import-ant in a ticket issuing machine for otherwise a part of a second ticket might be unintentionally issued.

Another object of the invention is to provide interlocking means between the electrical driving means and the manual driving means so'that irrespective of which of the said driving means may be partially operated, the other driving means may complete the operation. If, for instance, the operator closes the switch so'tliat the electrical driving means is driving the machine and if the in which it should be at the end of an operation. v

Another object of the invention is to provide means to prevent damage to the operati-ng means in case the driven machine is inoperative In the embodiment herein shown, certain setting gears are operated by levers or keys.

These gears should be in correct position before the machine is operated for otherwise an improper record would be printed by the machine. I have therefore provided means to prevent the machine being operated unless each and every one of the gears is in correct position.

Other objects and advantages of the invention will appear in the detailed specification which follows'.

I have shown the preferred embodiment of my invention by way of illustration only in the accompanying drawings, in which Fig. l is a side elevational view of my invention as applied to the type of machine shown in the said application of Albert S. Wheelbarger and Grover O. Coil, Serial No. 65,532.

Fig. 2 is a side view of the machine shown in said application provided with a part of my improved mechanism.

Fig. 3 is anv endelevational view with certain' parts omitted for the sake of clearness.

Fig. 4 is a top plan view on the line 4 4 of Fig. 3 looking in the direction of the arrows.

Fig. 5 is a cross-sectional view on the lines 5 5 of Figs. 7 and 8.

Fig. 6 is an elevational view partly in cross section on the lines 6--6 of Figs. 7 and 8.

Fig. 7 is an elevational view partly in 10o ing mechanism showing the parts in the pof sition in which they would be immediately after the switch has been closed.,

Fig. 12 is a. similar view showing the p0-y sition of the parts when an operation has been completed.

Figs. 13, 14 and 15 are detailed views of the full stroke and locking mechanism showing the position of the parts in various .sta es of the operation, and

`ig. 16 is a diagrammatical view of the electrical connections of the machine.

In Figs. 1 and 2 I have indicated one type of machine on which I contemplated using my improvements. The machine is provided with levers 1 connected to gears 2 which drive and set up type wheels not shown, but which are fully shown and described in the said application of Wheelbarger and Coil, 65,532. The gears 2 engage a rod 3 o eratively connected to a shaft 4 which sha t has secured thereto a lever 5 having a rearward projection 6 tensioned by a spring 7. The lever 5 carries a pin 8 which projects through a slot 9 in the bar 10. A key 11.is inserted within the sidewall of the machine and a cam wall thereon, not shown, engages the bifurcated end 12 of a lever 13 pivoted at 14 to the sidewall of the machine depressing the upper end of the lever 13 or -moving it in a clockwise direction as viewed in Fig. 2, s as to disengage the upper end tlereof from the lug 15 carried by the reciprocating bar 10. The lever 13 is provided with a cam surface 16 so that when the key is removed the spring 17 will move the lever 13 in an anti-clockwise direction so that the cam 16 will engage the lug 15 and depress the reciprocating bar 10. The bar 10 is provided with a slot 18 which receives a pin 19 carried by the sidewall of the machine. The bar 10 is provided with a pin 20 which extends through a slot 21 in the bar 22 the upper end of which is secured on the pin 8. The pin 8 and the pin 2()y are connected by means of a spring 23. The shaft 24 is provided with a disk 25 which has a `cut away portion 26 of a size and shape adapted to receive the lower end of the reciprocating The shaft 24, hereinafter referred to as the main operating shaft, rotates the disk 25 which carries a Wrist pin 27 which operates the pitman 28 which oscillates the printing carrier 29. It is obvious that the main operating shaft 24 cannot be o erated unless the key 11 is in the machine or the spring 23 would depress the reciprocating rod l0 into the cutaway portion 26, locking the machine against operation. Furthermore,if the gears 2 are not'correctly set; that is, if the rod 3 does not lie between two of the teeth of the gears 2 the upper vend of the lever 5 will be at the lower end of the slot 9 pressing the rod 10 downwardly into the cutaway portion 26 and thereby locking the machine.

I take advantage of this structure by mounting a movable contact 30 on the lever 5 and mounting a resiliently stationary contact 31 on one of the sidewalls of the machine.

It is obvious, therefore, that'if any one ofy the gears 2 is not properly set, the machine will be locked a ainst operation and furthermore, the mova le contact 30 will be disengaged lfrom the stationary contact 31. As soon, however, as the incorrectly set gear 2 is moved by the lever 1 to its correct position the rod 3 will be between two`of the teeth on the gear 2 and the spring 7 will then move the lever 5 so as to carry the movable contact 30 intoy engagement with the stationary contact 31. Incidentally, whileJ doing this the stationary Contact 31 is raised very slightly sothat there is a sliding engagement .between the contacts carried by the members 30 and 31, which maintains these contacts in a clean and bright condition at all times.

The main drive shaft 24 is provided with a pinion 32 which engages a pinion 33 mounted on a shaft 34 which is driven by a collar 35 by means hereinafter described. The shaft 24 also carries a mutilated gear 36 which drives intermeshing gears 37 and 38 mounted on shafts 39 and 40 respectively. The gear 37 is a Geneva gear having one short tooth to override the disk like part of the gear 36. Behind the short tooth is a long tooth which is in theplane of the gear 38 so that the teeth of the gear 37 are always in mesh with the teeth of the gear 38. The shaft 39 carries an impression roller, not shown, and the shaft 40 is provided with an electroplate, not shown, which is inked by means of an inking pad 41. The operating crank handle 42 is provided with'a collar 43 having ears 44 which engage cutaway portions 45 in a collar 46 rotatably mounted on a shaft 47, which collar 46 carries a ratchet 48. The operating crank 42 is held in place by means of a screw 49 which p rojects into the outer end of the shaft 47. A spacing collar 50 is provided between the ratchet 48 and the front wall 51 of the housing.

The shaft 47 is rotatably mounted in the collar 46 journaled in the front wall 51 and is alsol rotatably mounted in the collar 35 rotatably mounted in a spacing collar 52 carried by the rear wall 53of the casing. The

front wall 51 and the rear wall 53 are secured together by means of cross bars 54.

The shaft 47 has pinned thereto a collar 55 provided with a cutaway'portion 56 ending in an abrupt wall 57 as 1s clearl shownin Fig. 15. The ratchet 48 1s provl ed with a pin 58 which carries a pawl 59 whlch en gages the abrupt wall of the cutaway portlon 56. The pawl 59 is drawn toward the shaft 47 by means of a spring 60 which engages the projecting end of the pawl 59. T he other end of the spring 60 is secured to a pin 61 carried by the ratchet 48.` It is obvious that as the crank handle 42 is rotated the collar 43 rotates the collar 46 and Yratchet 48 carrying the pawl 59 which en ages the abrupt wall 57 of the collar 55, w ich is secured to the shaft 47 thereby rotating the same.y The above described means is the manually operated means whereby the machine may e operated.

A motor 62 is mounted on the rear wall 53 by means'of screws 63. The motor shaft 64 is provided with a screw 65 which meshes with and drives a gearv 66 rotatably mounted on the shaft 47, which gear 66 carries a collar 67 and a ratchet 68. A disk 69 is secured to a disk 70 rigidly secured to a collar 71. A disk 72 is also carried by the collar 71. The disk 72, collar 71, and disks 70 and 69 are'all rigidly secured to the shaft 47 by means of a. pin 73. The disk 69 carries a pin 74 on which is pivoted a combined catch and lever 75. The

. disk 69`carries a pin 76 projecting through a f slot 77 in the member 75. The disk 69 also carries a pin 78 on which is pivoted a pawl 79 tensioned by means of a spring 80 so as to tend to cause the end of the pawl 79 to engage the ratchet 68.

The collar 35 is provided withan arm` 82 (best seen in Fig. 10). The arm 82 carries a pin 83 on which is pivoted an arm 84 carrying a lug 85 adapted to be seated in a recess 81 in the collar 72. The arm 82 is provided with an extension 86 and a spring 87 connects the projection 86 and the arm 84 so as to pull the arm 84 toward the shaft 49.

It is obvious that if the crank handle 42 be rotated the shaft 47 will be driven through the sleeve 43, recesses 45 and ears 44, collar 46, ratchet 48, pawl 59 and collar 55 which is rigidly secured to the shaft 47. Furthermore, if the motor be operated the gear 66 will drive the shaft 47 through the collar 67, ratchet 68, pawl 79, disks 69 and 70 and driven when the collar 35 is held against rotation the slo ing sidewalls of the recess 81 will cam the geveled sidewalls of the lug 85 out of the recess 81, raising 4the arm 84. The

,collar 72 and shaft 47 can now be rotated without rotating the collar 35 and the machine. This is a very valuable safety device n the pin 92, whlch lever is rovided with anr arm 94 extending on one si e of the push rod 88, and an arm 95 extending from the other side thereof, which arm 95 is secured' to a spring 96 mounted on the pin 97 carried by the lower end of the push rod 88. The spring 96 tends' to hold the lever 93 in the position shown in Fig. 8 so that the lug 98 carried by the upper end ofthe lever 93 is in position to engage one end of a bell crank lever 99 pivoted on a pin 100 carried by the wall 53. The lever 99 is tensioned by means of a spring 101 and is provided with a recess 102 and a lug 103.

A switch has already been described whereby the circuit is opened if the machine is incorrectly set. A second switch is provided whereby the circuit is closed whenever the push rod 88 is depressed and is again opened as soon as the machine has completed its operation. This second switch, however, is independent of the lirst mentioned switch and the machine will not operate when either of the switches is open. The second switch is best illustrated in Fig. 3 and consists of astationary contact 104 connected to a wire terminal 105. A spring contact 106 is connected to a Wire terminal 107. The spring contact 106 is controlled by a lever arm 108 having a lug 109 at its outer end and extending at a right angle to the plane of the lever arm 108 and engaging the spring contact 106. The lever arm 108 is pivoted on a shaft 110, which shaft extends between the two walls 51 and 53 of the casing. The lever arm 108 extends beyond the shaft 110 and terminates in an upstanding lug 111. The lever arm 108 is also provided above the shaft 110 with a shoulder 112 adapted to engage a pin 113 on a locking and releasing arm 114. The arm 114 is rigidly secured to a collar 115 rotatably mounted on the shaft 110. A spring 116 connects the pin 113 on the arm 114 to a pin 117 on the lever arm 108, and a spring 118 eX- tends from the pin 117 to a pin 119 carried by the rear wall 53. The disk 70 is provided with a cam 120. The locking and releasing arm 114 is provided with an outstanding lu '121 which engages'the end of the lever 75.

In 8l parts are'shown in the position inwhich they would be before the machine is operated. If they push rod 88 is depressed thel lug 98 of the lever 93 will engage engagement with the lug 103`by ythe action of `spring118 vwhich lug 103 stops its down?vv wardmotion. A s the spring 118 partially rotates the lever`f10'8 a counter-clockwise direction .the` spring contact '1 06 snaps into engagement with the stationary contact 104 and the'vshoulder 112 of the lever 108 engages-V the pin 113 of thev locking and releasing army 114, rotating it counter-clockwise so as to move the lug 121 out of engagement with the leverand catch member 75. The'spring 80 thereupon partially rotates the pawl 79 in a counter-clockwise direction so that the arm 123 of the pawl 79 cams the lever o75 upwardly, the pin 76 sliding in the slot 77. The pawl 79 now engages the ratchet 68. All of these operations take only a fractional portion of a second. Assumin that the gears 2 are in correct position ang that the switch members 30 and 31 are `closed the circuit is now complete and the motor rotates the gear 66, ratchet 68, pawl 79, disk 69 and the shaft 47. Immediately before the disk has completed one revolution the cam 120 will engage the lug 111 rotating the lever 108 clockwise so that the lug 109 will engage the spring -contact 106, moving it upwardly and opening the switch. The lever 99 is simultaneously rotated counter-clockwise .by means of the spring 101 so as to bring the recess 102 into engagement with the lug 109. As the cam 120 passes beyond'th'e lug 111 the lever 108 is retained in its raised position by the recess 102. After the disk 69 completesits revolution, it rotating with the disk 70, the lug 121 on the arm 114 engages the end of the lever 7 5 moving the lever 75 downwardly engaging the arm 123 and 'moving the pawl 79 out of engagement with the ratchet 68. The disk 69 is lprovided with a recs 124. The lug 121 engages this recess whenthe disk 69 has made its revolution, it being pulled into said recess'by means of the spring 116. The lug 121 by engaging the recess124positivelylocks the shaft against further operation. In practice, however,` it is foundl that it is not necessary to lock the shaft 47 by means of the lug 121 engaging the recess 124. Any meansv which will overcome the momentum of the machine afterthecompletion of the rotation ofthe shaftanay. be employed and in Fig. 2 I have shown .such a means. In this ligurev aV lever 200 is pivoted on a pin 201, which lever carries 4a roller. 202 which engages a recess 203 ofthe disk 25. The roller 202 is urged toward the` disk 25 by means of a spring 204. Two recesses203 are shownn Fig. 2

but one recess is suicient. This construction has been found to be the full equivalent, so

far as a stopping means, ofthe lug 121 by its engagement with the recess- 124. This being- .1 ofJ whether or `not the operator continues to press downl on the push rod 88. Normally,

however, the operator' would press on the push rod 88 and thenrelease it, whereupon the spring 91 would return it tothe position shown inFig. 8. v

The ratchet 48 is provided with a recess 125 and has lugs 126 and 127 onl opposite sides of the recess 125. A pawl 128 is rigidly secured to a collar 129 rotatably mounted on the shaft 110. y The collar 129 is provided with a tongue 130 within a groove 131 in the collar 115. Thetongue 130 is not as wide as the groove 131 so'that there is a certain amount of lost play between the collars 129A and 115 and, therefore, between lever 114 and pawl 128 respectively. rllhe pawl 128 is'provided with a rearwardly extending lever arm 132 connected to an arm 133 by means of a pin 134. The arm 133 is normally held in the position shown in Fig. 7 by means of the spring 135. The arm 133 is provided with a rectangular recess 136, alug 137, an extension 138 extending substantially at right angles to the plane of the arm-133, and an extension 139 extending in a plane at right angles to the plane of the extension 138. The extension 139 lies in a plane parallel to the plane of the arm 133, the arm 133 being in front of the ratchet 48 and the extension 139 lying behind the ratchet 48 and in the path of movement of the cam 140 carried by the collar 55 secured to the shaft 47.

If it be desirable to operate the machine manually, the crank handle 42 will be rotated slightly in a counter-clockwise direction.

The object of this mechanism is to prevent the machine being accidentally operated. Its operation is as follows:

. The parts are in the position shown in Fig. 7 prior to the operation of the machine,

in which position the pawl 128 is locking the ratchet 48 against rotation in a clockwise l direction. If the crank handle be now rotated slightly in an anti-clockwise direction the pin 126`will engage the lug 137 pushing the arm 133 against the tension of the spring 135 and rotating the lever arm 132 and pawl 128 in a counter-clockwise direction. The spring 135 slightly urges the arm 133 in a clockwise direction on its pivot 134 so that the recess 136 engages the lug 141 carried by the front wall 51 of the casing. The crank handle 42 is now locked against further rotation in an anti-clockwise direction. This anti-clockwise caused the arm 133 to move the pawl 128 out of the recess 125, and has also rotated the collar 129 and tongue .130 so as to engage one side of the groove 131 and rotate the collar 115 so as to disengage the lug 121 from the recess 124. It will, therefore, be noted that.

the lug 1 21 is removed from the recess 124 by the anti-clockwise rotation of the crank handle 42 or by depressing the push rod 88 as hereinbeforedescribed.

After the crank handle 42 has been slightly rotated in an anti-clockwise direction so as to unlock the mechanism theparts will be in the position shown in Fig. 13. As soon as the crank is rotated in a clockwise direction the pin 127 will engage the lug 137 moving the lever arm 133 outwardly and disengaging the recess 136 from the lug 141. The spring 135 moves the arm 133 upwardly so that the lug 141 will not again engage the recess 136 and the pawl 128 now rides on the periphery of the ratchet 48. The nose of the pawl 128 'thereafter prevents any anti-clockwise move- 'ment of the crank handle. Immediately prior Vto the completion of the rotation of the shaft 4'? the cam 140 engages the extension 139 raising the arm 133. The necessity of havlng a cam 140 and extension 139 is as follows:

' Fig. 11 and 'the disk 69 would not be stopped if there were no cam 140, and if the crank handle 42 were rotated anti-clockwise so as to disengage the lug 121-from the recess 124 and if the push rod 88 were then"depressed, there would be no means to release the arm 133 from the lug 141 so that the lug 121 would continue to be held in the position shown in when it had completed its revolution. The cam 140 under such conditions operates as the means to release the arm 133 from the lug 141 so as to permit the spring 116 to pull the arm 114 carrying the lug 121 into position to engage the recess 124. l

1t is, therefore, obvious that after the mechanism has been unlocked by the anti-clockwise rotation of the crank handle 42 the lug 121 and pawl 128 will again lock the disk 69 and ratchet 48 as soon as the machine haslbeen operated irrespective of whether it is operated by manual or electrical means.

1f the crank handle were rotated anticlockwise so as to unlock the mechanism and if the crank handle were then rotated clockwise so as to partially operate the machine, the operator could, if he so desired, depress the rod 88 and the operation would be completed by the electrically operating means. In this case the crank handle could readily be returned to its normal position, the pawl 59 riding on the periphery of the collar 55 until it engaged the cutaway portion or recess 56. In like manner, the machine might be partially operated by the electrical means and thereafter operated by the manual means. It would not be necessary, as a general rule,

to so operate the machine but it might be advantageousin case the current should go off after the mechanism had been partially operated.

y The electrical connections are shown diagrammatically in Fig. 16. A terminal holder 142 is attached to the front wall-51, which terminal holder is adapted to receive a ter minal holder 143 carrying wires connected to any suitable source of electricity. A lead 144 extends from the terminal holder 142 to the terminal 105 connected to the stationary contact 104. When the switch is closed the contact 104 engages the contact 106 which is con` nected to theterminal 107 from which extends the .lead 145 connected to the terminal 146 in an insulated holder 147 secured to the rear wall53 of the casing. A similar insulated holder 148 isv carried by the machine, which holder carries a terminal 149 connected toa lead 150, which leads to thespring con- 'tact 31. When the switch is closed the contact 31 engages the contact 30 connected to the lead 151 which is connected to the terminal 152 in the insulated holder 148. lThe terminal 152 is connected to a terminal 153 communicating with a lead 154 which extends to the motor 62. e A lead 155 extends from the motor 62 to a terminal 156 which extends through a block 157 carried by the frame of the mechanism and a lead 158 extends from the other end of the terminal 156 to the terminal holder 142. The only object in having the terminal 156 is to facilitate the removal of the motor in case the removal is found to be necessary. It will, of course, be understood that the terminals 146 and 149 as well as the terminals 152 and 153 are connectedwitheach other in the conventional manner. v

1t is obvious that many changes may be made in the specific construction shown by way of example herein, but l desire to claim my invention broadly regardless of the form or embodiment thereof which may fairly fall within the scope of the appended claims.

Having now described my invention, 1 claim:

1. ln combination, electrical driving means, mechanically operated driving means, a driven means and separate means whereby bothof said driving means will be rendered inoperative after one complete actuation.

2. In combination, electrical driving means, mechanical driving means, a driven means, means whereby either of said driving means may be employed to operate said driven means, and a safety device interposed between said driving means and said driven means.

3. In combination, electrical means, mechanical driving means, a driven means, means whereby either of said driving means may be employed to operate said driven means, anda resiliently held safety 1 driving tween said driving means vand said driven means, said safety device comprising a notched collar rotated by said driving means, and aresiliently held lever carried by said driven means, said lever being provided with a lug adapted to engage the notch in said collar.

5. In'l combination, an electrical driving means, mechanical driving means, a driven means, and means whereby either ofsaid driving means Vmaybe employed to partially drive said driven means, the other of saiddriving means may be employed to complete the operation and separate means whereby both of said driving means will be rendered in operative after one complete actuation.

6. In combination, electrical means, mechanically operated driving means, a driven means, means whereby either or both of said driving means may be employed to operate said driven means, separate means whereby both of said driving means will be rendered inoperative after one complete actuation -and means whereby said driven means is locked against further actuation after itv has completed one drivingoperation.

7. In combination, electrical driving means, mechanically operated driving means, a driven means, means whereby either or both of said driving means may be employed to operate said driven means, separate means whereby both of said driving means will be rendered inoperative after one complete actuation and means whereby said driven means is always stopped in the same position after it has been operated.

8. In combination, a shaft, a driven means operated by said shaft, electrical driving means, mechanical driving means, means whereby said shaft may be driven from either of said driving means, and a safety device interposed between'said shaft and said driven means.

9. In combination, a shaft, an electrical driving means, manual driving means, means whereby said shaft may be driven from either of said driving means, and separate means whereby both of said driving means will be rendered inoperative after one complete actuation.

10. In combination, a shaft, an electrical driving means, manual driving means, means whereby said shaft may be driven from either of said driving means, separate means whereby both of saidl driving means will be rendered inoperative after one complete actuation and means whereby said shaft is aldriving Leanser ways stopped in correct position yafter it has *been operated.

11. In a mechanism of the class described, an operating crank, means rotated thereby, a-pawl carried by said means, a shaft, a collar rigidly secured to said shaft and provided with a recess, aspring connected to said pawltending to move said pawl toward said collar so as to engage said recessa driven means, and a safety device 'connectingsaid shaft and driven means.

12. In a mechanism of the class described, l

an operating crank, means rotated thereby, a pawl carried by saidmeans, a shaft, a collar rigidly secured to said shaft and provided with a recess, means to rsiliently urge said pawl toward said collar so as to engage said recess, a driven means, and a resilient safety device connecting said shaft and drivenL means.

13. In a mechanism-of the class described, an operating crank, means rotated thereby, a pawl carried by said means, a shaft, a collar rigidly secured tosaid shaft and provided with a recess, a spring connected to said pawl and tending to move said pawl toward said collar so as to engage said recess, a driven means, and means lnterposed between said shaft and driven means whereby said shaft may rotate without rotating said driven means when said driven means is held against rotation.

14. In combination, a disk provided with anotch, a pawl adapted to engage said notch and lock said disk against rotation, and means whereby said pawl is disengaged from said notch uponvslightly rotating said disk in one direction so as to permit said disk to be operated in the other direction.

.15. In combination, a disk provided with a notch, a pawl adapted to engage said notch and lock said disk against rotation, means wh-ereby said pawl is disengaged from said notch upon slightly rotating said disk in one direction so as to permit said disk to be operated in the other direction, and means to prevent said pawl from reengaging said notch until after said disk has completed its rotation in said other direction.

' 16. lIn combination, a disk provided with a notch, a pawl adapted to engage said notch and lock said disk against rotation, an arm connected to said pawl, means carried by said disk to move said arm so as to disen and means to prevent said pawl from reengaging said notch after said disk is operated inthe otherdirection.

18. In combination, a disk provided with a notch, a pawl adapted to engage said notch and lock said disk against rotation, an arm connected to said pawl,- means whereby said arm is moved so as to operatesaid pawlvto disengage said pawl from said notch upon slightly rotating said disk in one direction, and means to prevent said pawl from reengaging said notch after said disk is operated vin the other direction, said last mentioned means including a stationary lugadapted to engage a notch in said arnn 19. ln combination, a disk provided with a notch, a pawl adapted to engage said notch and lock said disk against rotation, an arm connected to said pawl, means whereby said arm is moved so as to operate said pawl to' disengage said pawl from said notch upon slightly rotating said disk in one direction, means to prevent said pawl from re-engaging said notch after said disk is operated in the other direction, said last mentioned means including a stationary lug adapted to engage a notch in said arm, and means whereby said arm is disengaged from said lug when said disk is operated in the other direction.

20. In combination, a disk provided with a notch, a pawl adapted to engage said notch and lock said disk against rotation, an arm connected to said pawl, means whereby said arm is moved so as to operate said pawl to disengage said pawl from said notch upon slightly rotating said disk in one direction, means to prevent said pawl from re-engaging said notch after said disk is operated in the other direction, said last mentioned means including a stationary lug adapted to engage a notch in said arm, means whereby said arm is disengagedfrom said lug when said disk is operated in the other direction, electrically operated means, and means whereby said arm is reset when said electrically operated means has been actuated.

21. 1n combination, a disk provided with a notch, a pawl ada ted to engage said notch and lock said dis against rotation, means whereby said pawl is disengaged from said notch upon slightly rotating said disk in one direction so as to permit said disk to be operated in the other direction, an electrical driving means, a locking means therefor, and means whereby said locking means is unlocked when said disk is given said slight rotation in one direction.

22. In combination a push rod, a tripping member carried thereby, a lever adapted to be released by said tripping member when said push rod is actuated, an electrical operating means, locking means therefor, and means operatively connecting said locking means and lever. v

locks said locking `means when said push rod is actuated. p

24. ln combination, a push rod, a tripping member carried thereby, a lever adapted to be released by said tripping member when said push'rod is actuated, an electrical operating means, locking means therefor, means operatively connecting said locking means and lever, means whereby said lever unlocks said locking means when said push rod is actuated, and means whereby said lever is reset after said operating member has been actuated.

25. 1n combination, a push rod, a tripping member carried thereby, a lever adapted to be released by said tripping member when said push rod is actuated, an electrical operating Imeans, locking means therefor, means operatively connecting said locking means and lever, a driven means, and means whereby said locking means locks said driven means after said driven means has been actuated.

26. 1n combination, a push rod, a tripping member carried thereby, a bell crank lever adapted to be actuated by said tripping member and provided with a recess and a lug, a second lever normally resting in said recess, means whereby said second lever is moved from said recess to said lug when said bell crank lever is engaged by said tripping member, an operating means, locking means therefor, and means operatively connecting said locking means and said second lever.

27. ln combination, a push rod, a tripping member carried thereby, a lever adapted to be released by said tripping member when said push rod is actuated, an electrical operating means, locking means therefor, means operatively connecting said locking means and lever, and a switch member adapted to be engaged by said lever and opened when said lever is in one of its positions.

28. 1n a mechanism of the class described, setting means, electrical driving means, a circuit for said electrical driving means, and means whereby said circuit is opened when any of said setting means are in incorrect position.

f 29. In a mechanism of the class described, setting means, electrical operating means including an electric circuit, a plurality of switches in said circuit, one of said switches being opened whenever one of said setting means is in incorrect position and the other of said switches being manually closed so that said setting means must be in correct must be closed before the machine can be operated.

30. In combination, a shaft, an electrical drivin means, manual driving means, means Where y said shaft may be driven from leither of said driving means, separate means 1 whereby both of saidv driving means will be rendered inoperative after one complete actuation and means whereby said shaft is A 10 always stopped in the same position after it. has been operated. In testimony whereof I aiix my signature. ALBERT, S. WHEELBARGER.

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