US1136198A - Coin-controlled lock. - Google Patents

Description

A. A. WYCKOFF. COIN CONTROLLED LOCK. APPLICATION FILED AUG.7. 1914.

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A. A. WYCKOFF.

COIN CONTROLLED LOCK. APPLICATION FILED AUG-I, 1914.

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I 5 g J22 nrrn entree 1 current AMOS A. WYCKOIFF, OF SANTA CRUZ, CALIFORNIA, ASSIGNOB, BY DIRECT AND MESNE ASSIGNMENTS, TO COIN TIME LOCK (30., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

COIN-CONTROLLED LOCK.

Specification of Letters Patent.

Patented Apr. 2U, 1191155..

Application filed August 7, 1914. Serial No. 855,550.

To all whom it may concern Be it known that I, Autos A WYcKorr, a citizen of the United States, residing at Santa Cruz, in the county of Santa Cruz and State of California, have invented certain new and useful Improvements in Coin- Controlled Locks, of which the following is a specification.

This invention relates to coin-controlled locks, and more particularly to time locks, of the type displosed in my prior application, Serial No. 783,519, filed August 7, 1913.

Ihe general principle and mode of operation of my present invention is somewhat similar to that disclosed in my prior application, but the details of construction, by means of which the broad principle of my prior invention is carried into effect are considerably different in the present invention, particularly in the means for controlling the position of the coins in the coin chute and the mechanism for controlling said means.

In my prior application the coins were supported in the coin chute by a coin support which was moved continuously downward while the latter remained in locked position, thereby gradually lowering the coin disposed in the chute.

My present invention is designed to hold a coin in a fixed position during a predetermined interval of time, whereupon the coin is permitted to drop one step substantially equal to the diameter of the coin, in which position it is held for another period whereupon it drops another step, and so on during the entire period that the lock is adapted to operate.

One of the primary objects of the invention is the provision of means for accomplishing this step-by-step movement of the coin together with mechanism for controlling the same so that when the lockis unlocked all the. coins in the chute will be released and permitted to drop into a till, whereupon the parts are restored to normal position' to operate with and upon the coin which is next deposited.

Another object of the invention is the provision of novel and, simple mechanism for actuating the coin-controlling means and also the provision of suitable operative connections between the locking bolt and the driving means so that said driving means will be disconnected from the coin-controlling mechanism when the locking bolt is moved to unlocked position, thereby permitting the coin-controlling mechanism to be restored to normal position.

For the purpose of facilitating the explanation of my invention I have disclosed one preferred embodiment on the accompanying drawings, from an inspection of which, when considered in connection with the following description my invention and its principle of operation, should be readily understood.

Referring to the drawings Figure 1 is a rear view of a lock embodying my invention, the lock being shown in unlocked position; Fig. 2 is a similar view, showing the locking bolt in locked position; Figs. 3, 4:, 5 and 6 are longitudinal sectional views on the lines 33, 1-;1, 5.5 and 66 respectively, of Fig. 1; Fig. 7 is a transverse sectional view on the line 77 of Fig. 1; Fig. 8 is a transverse sectional view on the line 8-8 of Fig. 6; Fig. 9 is a sectional view on the line 99 of F ig. 1, and Fig. 10 is a fragmentary view of the bolt-holding latch and connected parts.

On the drawings reference character 11 indicates the lock body or frame, provided at its edges with rearwardly projecting flanges 12 and 13 having slots formed therein to support and guide the locking bolt 14. This bolt is provided, as shown in Fig. 7, on its front face with a coin groove 15 which, when the bolt is in unlocked position,is disposed in alinement with the lower end of a coin slot 16 formed by a two-part slide, the parts of which are indicated in Figs. 1, 2 and 5 by reference characters 17 and 18, slidably secured to the frame 11 by guideways 19 and 21 mounted on the body 11.

One of the openings in the body, through which the coins are deposited, is indicated by reference character 22 in Fig. 3. The slide and its method of cooperating with the bolt to prevent locking movement of the bolt, except upon the deposit of a coin, is

substantially similar to that shown and described in my priorapplication, and since no claim is made in the present instance to this specific construction a detailed description thereof will be omitted. The bolt 14:

into a coin chute 32 beneath the bolt. A sec-- ond bell crank lever 33 pivoted on a pin 34 has its lower arm projecting into the coin chute opposite the upper arm of lever 29, and its upper arm is adapted to be engaged by an undercut inclined surface 35 of the bolt 14 so that initial unlocking movement of the bolt will swing the lever 33 on its pivot against the force of a coiled contraction spring 36 to thereby rock the lever 29 in a counterclockwise direction through the intermediary of a coin positioned in the chute between the opposed arms of said levers, thereby withdrawing the latch 26from the notch '20 to permit the bolt to be moved to unlocked position. In the absence of a coin of the proper size between the opposed ends of said bell crank levers the latch 26 will obviously not be withdrawn upon initial unlocking movement of the bolt, and the bolt will thereby be held against unlocking movement until a coin of the proper size has been deposited in the lock. The construction thus far described is substantially similar in its operation to that disclosed in my prior application. I

The coin chute 32 in the present instance is of sufiicient length to accommodate a number of 'coins, and manifestly its length may be varied to accommodate the lock to time periods of different lengths. Instead of employing a coin support movable downwardly in the chute at a constant speed I have provided mechanism in the present instance which will positively maintain a coin in a predetermined position during a predetermined period'of time, so that any possibility of a coin being part way between one position and the next with the result that a coin will not be properly located between the bell crank levers when it may be desirable to unlock the lock, as might happen with a continuously moving coin support, is obviated. The coin supporting mechanism in the present instance comprises a series of pins, 36, 37 38, 39 and 41 respectively. Pins 36, 37, 38 and 39, are similar in construction, and, as shown in Fig. 8, are mounted in the outer wall 42 of the coin chute and are guided by a channel-shaped member 43 secured upon the outer face of said wall. Each of these pins is substantially of U-shape, comprising a long leg 44 adapted to extend into and across the chute 32 so as to form a coin supporting stop upon which a coin will rest and a short leg 45 adapted to bear against a longitudinally movable rack bar 46. Leaf springs 47 pressing against the crowns of the pins are adapted to normally urge the pins into operative position in the chute.

The rack bar 46, adapted to travel longitudinally in the channel member 43, is provided on one face with rack teeth 48 (Fig. 2) and when in the position shown in Fig. 5, that is, the position which it assumes when the locking bolt is unlocked, is adapted to hold pins 36, 37, 38 and 39 in inoperative position, as shown in Fig. 8. The outer face of the rack bar is provided with a depression 49 having inclined end- walls 51 and 52, and as the rack bar travels downwardly the depression is brought successively into registration with the short legs of the pins, there by permitting the pins to be projected into the coin chute by their respective springs. As the rack bar continues its downward movement the inclined end wall 52 of the depression acting upon the short legs of the pins, withdrawsthe pins in succession from the chute, thereby permitting a coin, supported by any particular pin, to drop one step to the next pin by which it will be supported until this pin in turn is withdrawn, whereupon the coin will drop to the next pin, and so on. The mechanism which operates the rack bar is so timed that a pin is withdrawn at the end of each time period for which the lock is designed. For instance, if the lock is designed to give twelve hours service for one nickel, during the first twelvehour period the nickel, through the intermediary of which the locking bolt was moved to locked position, is held by the uppermost pin in operative position between the opposed arms of the bell crank levers. At the end of the twelve-hour'period the upper pin is withdrawn and the nickel drops a distance practically equal its diameter to the next pin. During this second period it will be necessary, in order to unlock the lock, to deposit another nickel which will be supported by the first nickel in operative position between the bell crank lever arms. At the end of the second period the second pin is withdrawn, permitting the coin to drop to the third pin, so that it will be necessary to deposit two coins before the lock can be unlocked. The pins are withdrawn in succession at the end of each period so that the coin in the chute travels downwardly step-bystep, thereby necessitating the deposit of coins proportional in number to the time the lock has remained in locked position before the lock can be unlocked.

A gear wheel 53 fixed to a shaft 54 which is journaled at 55in a plate 56 secured to ers, 63 and 64 respectively. A. washer is disposed between the gear wheels 53 and 57 to hold them apart and prevent the shaft 54 from disengagement with the plate 56. The outer end of the hub 58 is provided with clutch teeth 66 adapted to be engaged by corresponding teethformed on a clutch member 67 secured by a pin and slot connection 68 upon the outer end of the shaft 54. The clutch member 67 is provided with a ring 69 equipped with laterally projecting studs 71 to which the forked lower end of a clutchoperating lever 72 is attached, said lever being pivoted at 73 to the outer end of bolt 62. It will be manifest that when the lever 72 is rocked on its pivot the clutch member 67 will be thrown into engagement with the clutch teeth 66 to lock the gear wheels '57 and 53 together so that they will revolve in unison.

For the purpose of operating the clutchcontrolling lever 72 synchronously with the movements of the locking bolt 14 1 have provided aswinging arm 74 pivoted to a suitable bracket 75 by means of a pin 76, and

have made this arm of forked construction to receive the upper end of lever 72, which is provided with an inclined slot 77, through which a pin 78 carried by the arm 74 extends. It will be evident that when the arm 74 isv in the lowered position shown in Fig. 3 the lever 72 will hold the clutch member 67 out of engagement with the clutch teeth 66 and that when the arm 74 is swung upwardly about its pivotthe lever 72 will be rocked to close the clutch, thereby connecting gear wheels 53 and 57 A link 79 is pivotally connected at its upper end by a pin 81 with the bolt-operating arm 23 and its lower end projects between the forks of the arm 3 from the position shown in Fig. 2 to that shown in Fig. 1. For the purpose of moving the arm 74 in the opposite direction tn close the clutch'I have provided a yielding construction comprising. a coiled expansion spring 83, embracing the lower end of the link 79 and abutting at one end against the enlarged head 84 of the link and at its other end against a movable washer 85 hearing against the underside of the arm 74. It will be manifest that when the link 79 is mo ed upwardly by movement of the arm 23 from the position shown in Fig. 1 to that shown in Fig. 2 the lever 72 will be swung on itspivot to close the clutch if the opposing teeth are in proper registration. If, however, the high points of the teeth should be opposed the spring 83 will permit the movement of the link 79 and will thereafter operate the arm 74 to close the clutch as soonas the teeth are properly positioned.

Motion is imparted to the worm gear wheel 57 by a worm 86 fixed on a drive shaft 87 mounted in suitable bearings on the flange 13. The shaft 87 is equipped at its upper end with a beveled gear 88, meshing with and driven by a beveled pinion 89 fixed on the main shaft 91. Motion is transmitted from the upper to the lower part of shaft 87 through a clutch comprising the upper member 92 haying a slot 93 slidably engaged with a pin 94 fixed to the shaft, and a lower member 95 fixed on a portion 96=0f the shaft which has a longitudinally slidable connection with a socket 97, fixed with respect to the worm 86, said socket having a slot 98 in which a pin 99 projecting through the portion 96 of the shaft engages.

The lower member 95 of the clutch is provided with a groove in which a ring 101 engages, said ring having a laterally projecting ear 102 (Fig. 10) threaded to receive the lower end of a rod 103 attached at its upper end by a pin 104 to the outer end of the bell crank lever 29. -VVhen the locking bolt is in unlocked position, as shown in Figs. 1 and 10, the horizontal arm of the bell crank'lever is depressed by the latch 26 so that through the rod 103 of the ring 101 the lower member 95 of the clutch is moved downwardly into the inoperative position shown in Fig. 1. When the locking bolt is moved to the locked position shown in Fig. 2 the clutch member 95 is moved upwardly into engagement with the clutch member 92 by the expansion spring.

105 which actuates the latch 26. It will thus be evident that when the lock is unlocked the clutch on the shaft 87 will be disconnected and that upon movement of the locking bolt to locked position the clutch will be closed to operate the coin-controlling mechanism.

The upper clutch member 92 is normally held in the position shown in Figs. 1 and 2 by an expansion spring 106, but this member is lifted to disconnect the clutch after the bolt has remained in locked position a predetermined period of time, by mechanism which will now be described. A link 107 is connected at its upper end .with an ear 108 projecting laterally from the clutch member 92 and is connected at its lower end by a pin 109 with a lever 111 pivoted at 112. A shoulder 113 formed on the link 107 is disposed-in the path of travel of a pin or stud 114 (Fig. 3) which, when the gear .wheel 53 is rotated in a clockwise direction a predetermined distance will engage the shoulder 113 to lift the link 107 and thereby elevate the clutch member 92 out of engagement with its companion member 95.

As has been previously stated, the coin chute may be of any desired length and equipped with coin-supporting stop pins proportional in number to the length of the chute. When the lock has remained in ram locked position and the rack bar has with drawn the pinsin succession until the coin in the slot rests upon the lowermost pin, it is desirable to stop farther travel of the rack bar so that the coin will remain in the chute upon the lower pin. This stoppage of the rack bar is accomplished by lifting the clutch member 92, as previously explained,

. and the various parts are so proportioned that the pin 114 will lift the link 107 and open the clutch when the rack bar has reached the limit of its downward travel.

Should the lock be left in locked position beyond the period of time provided for by the coin chute the person whose goods are stored in the locker should obviously pay for the time in excess of that provided for by the lock itself, and I have therefore provided an auxiliary latch 115 (Figs. 1, 2 and 9) slidably mounted in suitable guideways 116 and 117 on the flange 12. The latch has an overhanging portion 118 adapted to engage in a notch 119 of the locking bolt and is pulled downwardly into engagement with said notch by means of a rod 121 connected at 122 with the lever 111 and projecting through an opening in the laterally bent end 123 of the latch. It will be manifest that this latch is moved into engagement with the bolt simultaneously with the lifting of the clutch member 92 by means of the pin 114. The locking bolt is thereby held againstunlocking movement until it is released by the attendant, who has a key adapted to operate the lock 124, the key cylinder of which is provided with an arm 125 adapted to engage a projection 126 on the latch to lift the same out of engagement with the locking bolt. In order to permit the latch to be lifted a yielding connection, including a spring 127, is provided between the rod 121 and the latch, thereby permitting the latch to be lifted before the clutch member 92 is returned to normal position.

It will be obvious that the clutch member 92 will be held in raised position by the link 107 so long as the pin 114 is engaged therewith. When, however, the locking bolt is moved to unlocked position the clutch member 67 will be disengaged, as previously explained, thereby disconnecting the gear wheel 53 from the worm gear 57 so that said gear wheel may be rotated in a counterclockwise .direction to return the rack bar 46 to normal position and withdraw the pin 114 from engagement with the shoulder 113. Return movement of the rack bar is limited by an abutment 128 mounted on the main portion of the lock in the path of the rack bar. When the rack bar moves upwardly to the position shown in Fig. 5 the coin supporting pins are withdrawn from the coin chute, thereby permitting all of the coins in the chute to bexdischarged therefrom into a suitable receptacle.

In actual practice the drive shaft 91 may be driven from any suitable source of power and in some instances it may be desirable to extend this shaft across a bank of lockers so that the drive shaft 87 of each lock will be driven from the common main shaft. In the present instance I have chosen to illustrate an individual time-controlled driving mechanism adapted to drive a single lock, but manifestly a number of locks might be driven from the same mechanism if found expedient. The drive mechanism shown comprises a ratchet wheel 129 fixed on the shaft 91 which is adapted to be intermittently actuated by a pawl 131 mounted on an arm 132 and held by suitable spring into engagement with the wheel. The arm 132 has a substantially horizontally disposed portion 133 (Fig. 1) pivoted on the shaft 91 adjacent to the ratchet wheel, and this arm is connected by means of a link 134 with a reciprocatory rod 135 mounted in a suitable bracket 136 on the flange 13 and carrying at its lower endan armature 137. A coiled expansion spring 138 normally holds the pawl in the elevated position shown in Fig. 2. An electromagnet 139 is adapted to draw the armature downwardly against the force of spring 138 at each energization, thereby imparting a partial rotation to the shaft 191, reverse 1 rotation of the shaft being prevented by a spring pawl 141 engaged with the ratchet wheel. tently energizing the electromagnet may be employed, but in the present instance I have shown an electric circuit 130 including a battery 140 and a time-controlled circuit closer in the form of a clock 150 equipped with means (not shown) for intermittently closing the circuit. It will be evident that each energization of the magnet will, through the mechanism previously described, impart a slight downward movement to the rack bar 46 through which the coin-supporting pins are controlled.

It will be manifest that all of the coinsupporting pins, including the upper pin 41, should be withdrawn from the coin chute when the lock is moved to unlocked position to permit the discharge of all the coins from the chute, but that the upper pin 41 should again be moved into operative position as soon as the locking bolt is thrown to locked position in order to support a coin in operative position with respect to the opposed bell crank levers during the first time period. In'order to secure this operation of the pin 41 I have provided, in addition to the rack bar, an auxiliary controlling device for this .pin. Vith this endin view pin 41 is provided at its outer end with a lateral extension 142 which is connected with a lever 143 pivoted to the side of the coin chute on a pin 144. The upper end of the lever has a laterally disposed portion 145 which overlies a Any suitable means for intermitwithdraw the pin 146 engaging the rear face of the locking bolt 14 and normally ur ed against said face by the spring 47 whic tends to urge the pin 41 into the coin chute. The rear face of the locking bolt is provided, in alinement with the pin 146, with a depression 147 into which pin 146 enters when the bolt is moved to locked position. From Fig. 5 it will be observed that when the rack bar is in its normal upper position the depression 49' therein is disposed opposite to the pin 41 so that this pin is permitted to enter the coin chute as soon as pin 146 enters the depression 147 upon locking movement of the bolt. Pin 41 is therefore positioned in the chute as soon as the lock is locked and supports the coin which was employed to throw the bolt to locked position, during the initial time period, or until the depression 49 in the rack bar has traveled downwardly a sufficient distance to permit pin 39 to assume its operative position a'hd to withdraw pin 41. When the locking bolt is moved to unlocked position the depression 147 therein will be withdrawn from beneath pin 146 thereby moving the upper end of lever 143 outwardly to pin 41.

When the locking bolt is moved to unlocked position, thereby withdrawing the pin 41 and opening the clutch 67, the rack bar will be returned to its normal uppermost position by mechanism which will now be described. Beneath the gear wheel 53 l have provided a rotatable shaft 148 which has a ratchet wheel 149 fixed thereon and a gear wheel 151 rotatably mounted thereon and meshing with the gear wheel 53. A coiled spring 154 has one end fixed to the lock casing, preferably around the bolt 61 and its other end fixed to the shaft. A dog 155 is mounted on the outer face of the gear wheel 151 and is urged into engagement with the ratchet wheel 149 by a spring 156. The outer end of shaft 148 is squared as indicated by 157 to receive a keyby means of which the shaft may be rotated relatively to the gear wheel 151 to place the spring 154 under the desired initial tension. When the gear wheel 53 is rotating to move the rack bar 46 the gear wheel 151 is rotated thereby and through the dog and ratchet wheel the shaft 148 is also rotated to increase the tension on the spring 154. When the locln'ng bolt is moved to unlocked position the clutch 67 is released, as has been previously explained, so that the connection between the gear wheels 53 and 57 is broken. Gear wheel 53 is thereupon rotated in a counter-clockwise direction by the spring 154 through the gear wheel 151 to restore the rack bar to its normal uppermost position.

It will be manifest from the foregoing that l have provided mechanism which positively controls the position of coins in the coin chute and insures the proper position of a coin with respect to the opposed bell crank levers irrespective of the length of time that the lock has remained in locked position. It will also be obvious that I have provided novel and efficient mechanism for actuating and controlling the coin-supporting pins and that it is impossible to unlock the lock except upon deposit of coins proportional in number to the time the lock has remained in locked position and that after the time period for which the lock is designed has elapsed the locking bolt is held by an auxiliarylatch so that the services of an attendant, who will collect for the overtime, is necessary before the lock can be unlocked.

It is believed that my invention and its mode of o eration will be understood from the foregolng without further description, and it will be obvious that the details of construction shown and described can be varied within considerable limits without departing from the spirit of the invention or sacrificing any. of its material advantages.

it claim:

1. In a coin-controlled lock, the combination of a coin guide, andmeans comprising a plurality of individually movable elements movable into and out of operative position for supporting a coin in successive predetermined positions in said guide.

2. In a coin-controlled lock, he combination of a coin chute, a plurality of coin supporting devices positioned in spaced relation longitudinally of said chute, means for normally urging said devices into operative position in said chute, and means for successively withdrawing said devices from operative position to thereby support a coin in a succession of predetermined positions.

3. In a coin-controlled lock, the combination of a coin chute, a plurality of coin supports projecting into said chute and timecontrolled means for moving said supports successively and individually into inoperative position to permit a periodic movement of a coin in said chute.

4. In a coin-controlled lock, the combination of a coin chute, a plurality of coinsupporting devices disposed in spaced relation adjacent to said chute, means for normally urging all of said supports into the chute, and time-controlled mechanism for withdrawing said supports individually and in succession from the chute to permit a predetermined periodic movement of a coin in the chute.

6. In a coin-controlled lock, the combine. I tion of a coin chute, a plurality of pins disposed transversely of said chute to support a coin therein in various positions, springs for normally urging all of said pins into operative position in the chute, a rack bar movable longitudinally of the chute and shaped to successively withdraw the pins from operative position, and means for actuating said rack bar.

7. In a coin-controlled lock, the combination of a locking bolt, a coin chute, a pin disposed transversely of said chute to support a coin therein, means operated from said bolt to withdraw said pin from the chute when the bolt is in unlocked position and time-controlled means for withdrawing said pin when said bolt has remained in locked position a predetermined period of time.

8. In a coin-controlled lock, the combination of a locking bolt, a coin chute, a pivotally mounted lever, a pin carried by said lever and projecting transversely of said chute, means for operating said lever to withdraw the pin when the locking bolt is in unlocked position, and means for Withdrawing said pin when the bolt is in locked position.

9. In a coin-controlled lock, the combination of a locking bolt, a coin chute, a series of pins disposed transversely of said chute, means for controlling said pins so that a coin is supported for a predetermined period in successive positions in the chute when the bolt is in locked position, means for withdrawing all of said pins from the chute to permit the discharge of a coin therefrom and means whereby said last mentioned means is rendered operative when the bolt is moved to unlocked position.

10. In a coin-controlled lock, the combination of a locking bolt, a coin chute, a plurality of pins disposed transversely of said chute, a rack bar adapted to engage with said pins, said rack bar being shaped to cause said pins to be moved successively into operative and inoperative positions upon movement of the bar, time-controlled means for moving said bar in one direction, means operated from the locking bolt for disconnecting said time-controlled means from said rack bar when the bolt is moved to unlocked position, and means for return ing said rack bar to. normal position when disconnected.

11. In a coin-controlled lock, the combination of a coin chute, a locking bolt, a lever for operating said bolt, means including coin-supporting pins and a rack bar adapted to successively withdraw said pins from thechute for controlling the position of coins in said chute, mechanism including a clutch for operating said rack bar, and means operated by said lever for releasing said clutch when the locking bolt is moved to unlocked position.

12. In a coin-controlled lock, the combination of a locking bolt, a lever for operating the same, COIII-p0S1t1OIl-COI1lJ1Oll1llg mechanism, means including a clutch for opcrating said mechanism, a lever provided with. an inclined slot, connected with one member of said clutch, a pivoted lever engaged in said slot, and a link connecting said pivoted lever and said bolt operating lever for operating said clutch upon movement of said locking bolt.

13. In a coin-controlled lock, the combination of a locking bolt, coin-position-controlling mechanism including a plurality of coin supporting elements arranged to sup port a single coin in successive positions and a member controlling the position of said elements, and time-controlled means for operating said mechanism.

14. In a coin-controlled lock, the combination of a locking bolt, and time-controlled means for determining the nu mber of coins to be deposited in said look before the bolt can be moved to inoperative position, including a plurality of successively positioned individually movable coin-support ing stops, and mechanism for operating said stops to control the position of a coin deposited in said lock.

15. In a coin-controlled lock, the combination of a locking bolt, a coin chute, coinposition-controlling mechanism including a rack bar and aplurality of coin-supporting pins withdrawable from said coin chute by said rack bar, a motor, driving mechanism between said motor and said rack bar including a gear wheel and a clutch, and means operated by said gear wheel for releasing said clutch when the rack bar has traveled a predetermined distance.

16. In a coin-controlled lock, the combination of a locking bolt, coin supporting elements, a reciprocatory member controlling said elements, a gear wheel for operating said member, a motor, driving connections between said motor and said gear Wheel including a clutch, means for releasing said clutch when the locking bolt is moved to unlocked position, and means controlled by said gear wheel for releasing said clutch when the locking bolt has remained in locked position a predetermined period of time.

17. In a coin-controlled-lock, the combination of a locking bolt, a motor, a driving shaft, means operated by said motor for actuating said shaft, coin-position-controlling mechanism including a series of coinsupporting pins adapted to be operated by said shaft, means for automatically disconnecting said shaft from said 'mechanism when the locking bolt has remained in locked position a predetermined period of time, and means for automatically returning said mechanism to initial position when the bolt is moved to unlocked position.

18. In a coin-controlled lock, the combination of a locking bolt, coin-controlled means for holding said bolt in locked positi on, coin-controlling means for determining the number of coins to be deposited in the lock before said bolt can be released, an auxiliary latch, means for moving said latch into locking engagement With the bolt When said bolt has remained in locked position a predetermined period of time, and a spring permitting the release of said auxiliary latch before the bolt is moved to unlocked position.

19. In a coin-controlled lock, the combination of a locking bolt, a latch adapted to be engaged With said bolt, means for moving said latch into engagemenet with the bolt after the bolt has remained in locked position a predetermined period of time, said means including a yieldable connection permitting the release of the latch, and a keycontrolled device for releasing said latch.

20. A coin-controlled lock comprising a coin chute, a series of stops disposed therein, and means for Withdrawing said independently movable stops in succession.

21.-A coin-controlled lock comprising a coin chute, a series of stops projecting into said chute, said stops being spaced apart and disposed in substantial alinement longitudinally of the chute, and means movable longitudinally of the chute for Withdrawing said stops from the chute in succession upon movement in one direction and for Withdrawing the stops and retain them in Withdrawn position upon movement in the opposite direction.

22. A coin-controlled lock comprising a coin chute, a series of stops spaced longitudinally of the chute and adapted to project into said chute, means for Withdrawing all of the stops except one from the chute when the lock is in locked position, said means being adapted to Withdraw said one stop from the chute When the lock is moved to unlocked position.

23. A coin-controlled lock, comprising a coin-chute, a plurality of pins extending transversely of said chute, springs normally urging each of said pins into said chute,

G. H. WYCKOFF, T. J WELDoN.

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