US1378590A - Coin-operated mechanism for gasolene-vending- machines and the like - Google Patents

Description

DROP (20m HEIRIE q qnq:

A. J. LUDWlG.

COIN OPERATED MECHANISM FOR GASOLENE VENDING MACHINES AND THE LIKE.

APPLICATION FILED MAR. 24. I920.

Patented May 17, 1921.

4 '5 SHEETS SHEETI lN \[EIN (2.; 5) 0mm H. J. LUDWtG. V COIN OPERATED MECHANISM FOR GASOLENE VENDING MACHINES AND THE LIKE.

APPLICATION FILED 11.24. 192p.

4 SHEETSSHEET 3.

1,378,590. Patented May 17,1921.

NV ENTQR 4 7 a qof xau t I v A. 1. LUBWIG. COiN OPERATED MECHANISM FOR GASOLENE VENDING MACHINES AND THE LIKE.

APPUCATION FILED MAR. 24. I920.

Patented May 17,1921.

4 SHEETS--SHEET R j w v1. 1. v T .3. zg w/ H u a m u U a 0 ,H0 m H H a 9. n j m a 7 a W .1 a x J n 1 Z a n ARTHUR LUDWIG, F BAXTER, IOWA.

COIN-OPERATED MECHANISM FOR GASOLENE-VENDING MACHINES AND THE LIKE.

Specification of Letters Patent.

Patented May 17, 1921.

Application filed March 24, 1920. Serial No. 368,445.

v T 0 all whom it may concern Be it known that I, ARTHUR J. LUDWIG,

V a citizen of theUnited States, and resident of Baxter, in the county of Jasperand State of Iowa have invented a'certain new and useful Coin-Operated Mechanism for Gasolene-Vending Machines and the like, of which the following is a specification.

The object of my invention is to, provide a coin operated mechanism for gasolene vending machines and the. like, of simple,

durable and inexpensive,construction.

. More particularly it is the object of my invention to provide such a coin operated mechanism, including means for preventing any but the desired operatlon of the mechanism at any time before orv after the deposit of the coin.

Still a further object is to provide such a mechanism adapted to be operated upon the deposit of coinsof different denomina tions.

Still a further object is to provide means in such a mechanism, for the return to the purchaser of any smaller coin which he may have deposited in the slot deslgned for larger coins.

Still. a further objectis to provide such a mechanism adapted to be selectively used and illustrated in the accompanying drawin which: Y

Figure 1 shows a front elevation of a machine embodying my invention;

Fig. 2 shows a vertical, transverse, sectional view through the'same.

.Fig; 3 shows a horizontal sectional View,

taken. 'on the line 3-3 of Fig. "2. I i

Fig. 4 shows adetail sectional view of i part ofthe locking mechanismgj Fig. 5 showsa side elevation of'o'ne of the locking pawls and'part of the mechanism for-operating same. j Fig. 6 shows a vertical sectional view through the pawl illustrated in Fig, 5,

Fig. 7 shows a detail sectional view of one of the slide bars.

Fig. 8 shows a vertical sectional view illustrating one of the coin slots and the mechanism adjacent thereto.

Fig. 9 shows a detail view of part of the mechanism for operating the slide bars.

Fig. 10 shows a detail sectional view of the slide bars illustrated in their relation to the locking bar.

Fig. 11 shows a detail sectional view ofa portion of one of the coin slots.

Fig. 12 shows a sectional view of the block in which the slide bars are mounted, with the slide bars and the locking bar installed therein. i

F 13 shows a detail sectional View, taken on the line 1313 of Fig. 12, illustrating one of the slide bars in certain positions of the slide barand the locking bar; and

Fig. 14: is a similar view showing the slide bar and the locking bar in other positions of their movement.

I In the accompanying drawings I have shown a casing, indicated by the reference character 10, supported on a suitable foundation 11. It is understood that the casing 10 may contain agasolene pump or the like, designed 'to be operated by means of a toothed bar 12 hereinafter more fully described, from a crank handle 13 on the outside of the casing 10.

Supported above the casing 10 is a casing 14, which contains the coin operated mechanism.

In the front of the casing 14 are a series of coin receivingslots'15, 16, 17 and 18. Leading from the'slots just described are suitable coin chutes 19, which extend inwardly and downwardly in the casing 14. The coin slots and chutes are ,of proper sizes to'receive coins of different denomina.

tions, as, for example, dimes, quarters, half dollars and dollars.

is open as at 21, to permit a smaller coin.

than the roper One, to be discharged from said chute.

Leading from the opening 21 oil each chute 19 is a chute 22 which discharges into a cup 22 from which the purchaser may remove the coin. V

In the upper portion of the casing 1% is mounted for rotation a transverse shaft 29. 0n the shaft 29 outside the casingid is a crank handle 30. I

Fixed t0 the shaft 29 is a downwardly ext-ending arm 31. Pivoted to the lower end '01"- the arm 31 is a linlr The link 32 is pivoted to a transverse har Pivoted to the bar 33 are "forwardly extending plunger rods 3%, which correspond in number to the number of coin receiving openings. The rods 34: are mounted in suitable bearings 35. On each rod Set is a collar 36. Mounted on each rod 3 1, between the col- 1ar36 and the bearing 35,1":or instance, is a coil spring 37 arranged to normally hold the rod 3% at its forward limit of movement for thereby holding' the shaift 29 and the crank arm 30 in starting position. Stop pins 38 limit the forward movement of the plunger rods 34.

Communicating with and extending rearwardly from the er portion oi? each coin Jchute 19 isa cylinder 89, into which troin the rear end projects a rod e0. 911 the forward endof each rod L0 is a dish 1-1, adapted pass freely downwardly into a coin re-' ceptacle 23 l1aving a sight glass 2%: in the front of the casing 1st, and having a hinged bottom 25 fixed to a 'pintle26, which is rotatably mounted. Fixed to the pintle 26 an arm 27. Pivoted to the arm 27 is 28. The rod 28 is fixed to the shaft 29, that the rotary movement of the shaft 29 imparts swinging movement to the rod 28 and tilting movement to the hinged l'iottoin 25. The rod 28 and arm 27 are connectei'l together with sutlicient play to'perinit the proper operation. oil? the parts tortilting the bottom 25 downwardly when the crank arm 30 isoperated toroperatingg the plunger rods 34:.

Suitably supportedwithin the easin is a block 4-4, in which are mounted the slide bars 45, 46, 4L7 and 48, which are con nected with the respective rods 40. On the under. surface of the slide bars are alined notches L9 and 50. Each notch has one inclined wall on the sid adjacent tothe movement in the casing 14:.

a rod ward movement of said bar.

Pivoted to each of the slide bars is a downwardly projecting pin 52. A stop 53 limits th swinging movement of the pin 52 in one direction. Connected with each pin is a spring 5a for normally holding the pin in engagement with its corresponding stop.

lrlounted for limited vertical sliding movement in the block td in a suitable slot 55 therein, is a bar 56 having downwardly projecting pins 57 extending into coil. springs 58, on which the bar 56 rests. The bar 56 is arranged tansversely with relation to the slide bars.

Slidably mounted above the bar 56 is av bar 50, which for convenience I have called the locking bar. In the upper surface of the locking bar 59 are notches 60, which, when the parts are in normal p0sition, stand below the respective slide bars and receivesaid slide bars.

Suitably mounted for sliding reciprocating movement, forwardly of the block hi shaft .(l-Ll' suitably mounted in the frame members and 66 in the casing 1%.

Mounted preferably on the upper surface off the raclr bar 61 are tnecam blocks 67, 68, 69 and 70, which normally stand adjacent to the lower ends of the respective pivoted pins 52.. The cam blocks are so arranged that when the slide bars are slid rearwardly in the machine, the pins 52 will engage said cam blocks "for forcing the rack bar (Blister-ally for imparting limited rotation to the pinion63 and'the shaft 64:.

It may he mentioned in this connection that on the return movement of the respective slide bars the pins may wing ontheir pivot points against the tension of the springs 54 for allowing the pins to clear the cam blocks.

Suitably mounted parallel with the shaft 6 1 is a shaft 71 on which is a gear 72 which meshes with a gear 7 3 on the shaft 64.

, Mounted for vertical sliding movement in the machine is a toothed bar 12, arranged hetween the shafts (3st and 71, as illustrated in Figs. 2 and The bar 12 has teeth '74 and 75 onits opposite sides, adjacent to the respective shafts 71 and On the shaft 64: is fixed disk 76. jacent to the disk 76 a dish 77 is rotatably mounted on the shaft 6%. The disk 7 6 and 7 7 are connected by a coil'spring 78. 7 02. the disk 77 is a pawl 7 9, designed in one position of the disk77 tocoaet with the teeth 75 of the bar 12 for preventing'down- The normal position or" the pawl 79 is extending upwardly and away from the bar 12, as illustrated by dotted lines in Fig. 2.- V

I the disk 76 is a curved slot 80, which receivesa pin: 81 extending from the dish 77, for permittinglimited rotation ofthe disks 7 6 and 77 with relation to each other. The spring 78 is so arranged as to tend to hold the disk 77 in such position of its rotation withrelation to the disk 76, as to hold thefpawl 7 9 as near to the bar 12 as possible.

. On the shaft 71 is a similarly constructed pawl device designed to coact with the teeth 74- on the other side of the bar 12. On the shaft 71 is fixed a disk 82. Adjacent to the disk 82 there is loosely mounted on the shaftv 71 a disk 83, on which is the pawl 84 extending downwardly. The disks. 82 and 83 are connected by a spring 85,-, similar to the spring 78., 1 f

In the disk'82 isa curved slot 86, 'which receives the pin 87 on the disk; 83 for thereby limiting the rotary movement of the disk tions of their vertical-adjustment by means 90 onthe shaft 71.

83 with relation to the disk;82. The spring 85' is so arranged as totend to hold the pawl '84} at the limit of its movement toward the bar 12 with relation tothel disk 82. The

a f locking bar 59 has near its end a pin 88 upwardly a short'distance from its normal lower pOSlillOIl,'il11Cl that 1ts upward movement is limited by the shoulder 94. Adjustably mounted on the bar 91 and projecting in different directions from said -.40

bar are stop arms 95, 96, 97 and 98, which may be secured in any of the different posiof set screws 99. On the upper end of-the bar 12 is a suitable head 100, normally standing below the level of the lowermost stop bar 95. The bar91 is mounted for rotation as well as for vertical sliding movement. I Y

. Fixed on the bar z91isa wide 101, which meshes with a-segmental gear 102- mounted on the vertical stub shaft 103. The.

segmentalgear 102 has an arm 104 projecting therefrom "into the paths'of movement of the rear'ends of the slide bars 45,46, and 47 ,as illustrated in Fig.

Pivotally mounted on a bracket 105 is arm 106, one end of which stands above the gear 101. Pivoted tothe-other endof the arm- 106 is adownwardlyhanging arm 107. On-the shaft 71 is an arm 108, which projeots to position below the arm 10.7,; asshown injFigs. 3 and 'A spring- 109 tends to i draw the arm 104 toward the slide bars 45,,

46 and 47, as shown in. Fig. 3.

@ll will 'now descri e the-practicaloperation of'my improved coin operated mecha- 'nism for gasolene vending machines and other such devices.

Of course it will be understood that the bar 12 is connected with the crank handle 13 in a suitable manner, and also with a suitable pump which discharges through the flexible tube 110, or otherwise,'as may be desired. 2 The stop arms 95, 96, 97 and 98 are adjusted at the proper heights on the graduated bar 91. Normally the springs 31 hold the plunger rods 34 in their forward, positions of movement, the'springs 42 hold the slide bars in their forward positions, the

spring. 109 holds the segmental gear v102, the gear 101 andthe bar .91 in such positions that the upper stop bar 98 stands directly above the head 100 on the toothedbar 12. The shafts 64 and 71 stand in the positions shown in Fig. 4, with the pawl 84 en gaging the teeth 74, and the pawl 7 9 free from the teeth 75.

Assuming that a coin, such, for instance, as a half dollar, is dropped into the'slot 17, it will then slide downwardly through the proper chute 19 until stopped byjthe contracted portion '20. This contracted portion will stop the coin exactly in line with the proper cylinder 39. In the forward wall of each chute 19 is a suitable hole 111 to admit the corresponding plunger rod 34. After the coin has been dropped into the machine, the crank may then be operated for swinging the arm. 31 foractuating the bar 33 and the plunger rods 34. The disks 41 and cylinders 40. have openings 112 to permit the inoperative entrance of the plunger rods 34 where no coin has been deposited. V V

When the crank handle 30 is operated after the half. dollar has been deposited, the proper plunger rodf34 will engage the coin, forcing it into thecylinders39 and. forcing the disk 41 and the rod and the corresponding slide bar 47 against the tension of the spring 42 rearwardly in the machine; The slide bar 47 in its rearward movement, of course, carriescwith it the catch pin 52 which engages the cam block 69 for'forcing the bar 61 laterally toward the left. The same movement ofthe slide bar 47 causes the arm 104 and the segmental gear .102 to swing on the shaft 103 for ill 113211131112 such rotation to the gear 101 and the bar 91 as to bring the 817011 0211 97, which is the half dollar stop bar, to position projecting above the head 100. The leftward sliding movement of the bar 61 imparts limited rotation to the gear 63 and the shaft 64. Such rotation is imparted to the disk 76, and through the pin 81 to the disk 77. for bringing the pawl 79 into engage ment with the teeth '75 on the bar 12. The rotation of the-shaft 64. imparts rotation to the gears 73 and 72, and from thence to the shaft 71 and the disk 82 mounted thereon. The first part of such rotation moves the disk 82 from position with the pin 87 as shown in Fig. i, to position where the pin is in the other end of the slot 86, and during the latter part of the rotation of the shaft 71 and disk 82 the disk 83 is moved for withdrawing the pawl 84 from engagement with the teeth 741. i

It will be noted that on account of the peculiar connection of the disks 82 and 83, the pawl 84 is not moved out of engagement with the teeth of the bar 12 until the latter part of the operation of the machine, whereupon the bar 12 may be moved upwardly by the movement of the crank 13, or otherwise, for delivering gasolene from the machine.

In the meanwhile, the machine has been locked against the return of the parts to their normal position, in the following manner:

Before starting the operation, the bar 47 stood in the position shown in 14, with relation to the locking bar 59, with the rearward end of'the slot 50 above the corre-' sponding slot 60 in the bar 59. The rearward sliding movement of the bar 4:7 carries it in the direction indicated by the arrow-in Fig. 14, to position where the slot 19 is above the locking bar 59, as illustrated in Fig. 13. During the rearward sliding movement of the bar 4C7 the rotation of the shaft 71 and-the consequent movement of the arm 90 impart lateral sliding movement to the right: to the locking bar 59, for moving the slots out of register with the respective slide bars. The movement of the slide bar 17 depresses thelocking bar 59 until the notch 49 in the slide bar 47 comes to position directly above the locking bar, whereupon the springs 58 force the locking bar 59 upwardly into the notch d9 of said slide bar 4:7, whereupon the slide bar 47 is held against the tension of the spring 12 from returning to its original starting position. The operation' of the crank 13 serves, by mechanism whichis not here shown, but which is of ordinary construction in common use, to raise the toothed bar 12. The crank 13 may be operated for so raising the toothed bar 12 until the head 100 on said bar engages the stop bar 9?. Thereafterthere maybe $11111 cient further operation of themechanism to raise the bar 91 until the shoulder 94 011 gages the bearing for the portion 93, where- .by-the upward movement of the bar 91 and bar 12 are finally'limited.

The-short upward sliding movement of the bar 91 carries upwardly thegear 101, which, in such upward movement, raises the end of the arm 106 adjacent to said gear and correspondingly lowers the opposite end of said arm. The arm 108 by the first part of the operation of-the machine is raised upwardly until it stands adjacent to the arm 107. The upward movement of the gear 101 lowers the arm 107, thereby forcing clownwardly the arm 108 and imparting rotation to the shaft 71 in a direction opposite that of its first rotation, returning the shaft 71 to its original position and moving the pawl 8-1 into engagement with the teeth 74. The retation of the shaft 71 moves'the arm 90 for returning the locking bar 59 to'its original position where the notches 60 register with the locking bars, whereupon the spring 109 returns the segment 102 and the bar '91 to their original positions, and forces the slide bar 47 forwardly in the machine for returning said parts to their original startin position. The rotation of the shaft 71, through the gears 72 and73, returns the shaft ea to its original position, thereby throwing the pawl 7 9 out of engagement with the teeth 75.

In this connection it will be noted that the frictional engagement of the pawl 79 with the teeth 7 5 will prevent the disengagement of the pawl 7 9 and teeth 75 until the disk 76 has moved a sufiicient distance to permit the pin 81 to travel from one end to the other of the slot 80 so that the pawl is not disengaged until the latter part'of the operationof the machine during the returning of the parts to starting position. The operation of the shaft 6 1, now being described, returns the bar 61 to its original position. 3

On account of the swinging mounting of the pin 52 on the bar 47, said pin may swing upwardly against'the tension of the spring 54 for permitting it to clear the cam block 69, but as soon as such clearing is completed the spring 54: returns the pin 52 to its downwardly hanging position. The spring 42 assists in returnlng the slide'bar 47 to its original position after the locking bar 59 has slid to position for permitting the return of the slide bar. During the return of the slide bar the coin drops through the chute 4:8 upon the swinging hinged bottom 25, and there. remains in plain sight until the next operation of the machine.

'Upon the next operation of the machine the partial rotation of the shaft 29 through the means of the crank 30, actuatesthe arm 28 and the arm 27 for tilting the bottom 25 and dropping the coin thereon downwardly.

The operation of the machine after the deposit of other coins is similar to that already described. e

here the largest coin' is deposited, there 7 is no operation of the segmental gear 102,

for the reason that the slide bar 18 clears thecndof the arm 104. Hence there is no For smaller coins the operation is similar to that described, with the exception that will simply drop through and be delivered into the cupmember 22 and returned to the owner. On account of the arrangement of the locking bar, there can beno operation ofthemachine but such as to deliver the complete amount or" gasolene or the like paid for, until another coin has been deposited. Only the complete operation of the machine for delivering the proper "amount of the 'vended commodlty Wlll serve to unlock the machine for another operation. The peculiar arrangement-oi the pawls is such as to keep the bar 12 locked except for onecomplete operation for each coin. It will be readily seen that by very simple modification the machine may be changed for use with any vdesired coins.

The amount of the commodity to bedelivered for any particular coin may be readily regulated by the adjustment or the stop arms 95, 96, 97 and 98, which can readily be adjusted on the bar9l by means of the set screw 99/ v I have shown the rear portion of the casing 14 provided with a hinged door 14; for permitting readyacccess to the mechanism within the casing. v

Changes may be made in the construction and arrangement of the various parts of my improved coin operated mechanism, without departing from the real spirit and purpose of my invention, and it is 'my'intention to cover by my claims anymodified' forms ofijstructure or use of mechanical equivalents which may be reasonably includedwithin their scope Iclaim as my invention:

1. In a'machine of the class described, a casing, a coin chute therein having a portion adapted to receive and hold a coin, a

cylinder extender from said portion, a rod in said cylinder, a slide bar connected with saidrod, a plunger adapted to engage coin in said portion for forcing the coin into said cylinder and actuating said slide bar, a locking bar, said slide bar and locking bar having portions adapted to engage. when the said bars are in certain positions of their movement, for holding the slide bar against movement in one direction, means tending to yieldingly move the slide bar in another direction, an actuating bar, devices 7 for locking said actuating bar against sliding movement in either direction, means for actuating one of said devices from said slide'bar, a member slidably and rotatably mounted, adjustable means thereon for limiting the movement of said actuating bar, means for limiting the sliding movement of said member, and means adapted to be actuated by the movement of said member for moving the locking bar to inoperative position. v

'2. In a machine of the class described, a casing, a coin chute therein having a portion adapted to receive and hold a coin, a cylinder extending from said portion, a rod in said cylinder, a slide barconnected with said rod, a plunger adapted to engage a comin said portion for forcing the coin into said cylinder and actuating said slide bar, a locking bar, said slide bar and locking bar having portions adapted to engage when the said bars are in certain positions of their movement, for holding the slide bar against movement in one direction, means tending to yieldingly move the slide bar in another direction, an actuating bar, devices for looking said actuating bar against sliding movement in either direction, means for actuating one of'said devices from said slide bar, a member slidably and rotatably mounted, adjustable means thereon for limiting the movement of said actuating bar, means for limiting the sliding movement of said memher, and means adapted to be actuated by the movement of said member for moving the locking bar to inoperative position and r'or moving the other of said devices to locking position. a

3. In a device of the class described, a slide bar, means for actuating said'slide bar through the medium of a coin, an actuating bar, means for locking said actuating bar against movement in one direction, means operable from said slide bar for releasing said locking means, and a'locking bar arranged to' be moved to operative position when said slide bar is operated, a member having a stop device thereon, said member being capable of limited sliding movement, and a device capable of being operated-upon the sliding movement of said member, for moving said locking bar to unlocking position. I

4. In a device of the class described, a casing, a series of slide bars mounted therein, means for actuating said slide bars through the medium of coins, a locking bar,

' means for moving said locking bar to operasaid member for bringing one of said stop devices to a definite position with reation to said actuating bar, and means arranged to be actuated by the movement of said member, for returning said second means to its-starting position.

5. In a device of the class described, a casing, a series of slide bars mounted therein, means for actuating said slide bars through the medium of coins, a locking bar, means for 'moving said locking bar to operative position when any one of the slide bars is actuated, an actuating bar, locking means arranged to be operated by a movement of the slide bar for movement to inoperative position with relation to said actu ating bar, a member rotatably and slidably mounted, having stop devices thereon, means whereby the movement of the slide bar actuates said member for bringing one of said stop devices to a definite position with relation to said actuating bar, and means arranged to be actuated by the movement of said member, for returning said second means to its starting position, said second means including a locking member designed to coact with said locking bar and to be moved to operative position when said first locking device is moved to inoperative position.

6. In a device of the class described, a series of slide bars, means for actuating said slide bars through the medium of coins, an actuating bar, locking devices for holding said actuating bar against movement in opposite directions, means arranged to be actuated by movement of any one of said slide bars for moving one of said locking devices out of operative position and for moving the other of said locking devices into operative position, an adjustable memher for limiting the movement ofsaid actu ating device, and means actuated by the movement of said adjustable member, for returning said last means to normal position.

7. In a device of the class described, a series of slide bars, means for actuating said slide bars through the medium of coins, a movable actuating bar, locking devices for respectively holding said actuating bar against movement in opposite directions, means selectively operable from either of said slide bars for moving one of said look ing devices out of engagement and the other into engagement with said actuating bar, a bar mounted for rotation and for limited sliding movement, having stop devices thereon for coacting with said actuating bar, and means arranged to be actuated from said last bar, for reversing the movement of said locking devices.

8. In a device of the class described, a

V series of slide bars, means for actuating said slide bars through the medium of coins, a movable actuating bar, locking devices for respectively holding said actuating bar against movement in opposite directions, means selectively operable from either of said slide bars for moving one of said looking devices out of engagement and the other into engagement with said actuating bar, a bar mounted for rotation and'for limited sliding movement, having stop devices thereon for coacting with said actuating bar, and means arranged to be actuated from said last bar, for reversing the movement of said locking devices, said stop devices being adjustable.

9. In a device of the class described, a series of slide bars, means for actuating said slide bars through the medium of coins, a movable actuating bar, locking devices for respectively holding said actuating bar against movement in opposite directions, means selectively operable from either of said slide bars for moving one of said loclr- 7 ing devices out of engagement and the other into engagement with said actuating bar, a bar mounted for rotation and for limited sliding movement, having stop devices thereon for coacting with said actuating bar, means arranged to be actuated from said last bar, for reversing the movement of said locking devices, and means adapted to be selectively operated by said 95 slide bars for moving said last bar to bring the stops thereon selectively to position for cooperating with said actuating bar.

10. In a device of the class described, a series of slide bars, means for actuating said 100 slide bars through the medium of coins, a movable actuating bar, a measuring bar mounted for rotation, stop devices thereon projecting in different directions therefrom, and means adapted to be operated by the 5 respective slide bars for rotating said measuring bar for selectively bringing the different stops thereoninto the path of movement of said actuating bar.

11. Ina device of the class described, a 130 series of slide bars, means for actuating said slide bars through the medium of coins, a movable actuating bar, locking devices for respectively holding said actuating bar against movement in opposite directions, 5 means selectively operable from either of said slide bars for moving one of said looking devices out of en agement and the other into engagement with said actuating bar, a bar mounted for rotation and for limited 120 sliding movement, having stop devices thereon for coacting with said actuating bar, means arranged to be actuated from said last bar, for reversing the movement of said locking devices, and means adapted to be 12-5 selectively operated by said slide bars for moving said last bar to bring the stops thereon selectively to position for cocperating with said actuating bar, said stop devices being adjustable.

12. In a device of the class described, a movable actuating bar, an adjustable measuring bar, stops thereon, and a series of devices arranged to be selectively actuated through the media of coins, for selectively bringing difierent stop devices into the path of movement of said actuating bar, said actuating devices including slide bars, means for automatically locking the actuated slide bar against return movement When it is op- 10 erated, means tending to return the slide bars to their normal positions, and means arranged to be actuated by the movement of said measuring bar for releasing said locking means.

Des Moines, Iowa, August 30, 1919.

ARTHUR J. LUDWIG.

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