US2905763A - Paystation coin apparatus - Google Patents

Description

Sept. 22,-1959 H. SENGEBUSCH 2,905,763

PAYSTATION com APPARATUS Filed Sept. 28, 1955 s sheets-sheet 1 l FIG. 1

' W INVENTOR- HANS SENGEBUSCH BY A A ATTY Sept. 22, 1959 H. SENGEBUSCH 2,905,763

PAYSTATION com APPARATUS Filed Sept. 28, 1955 3 Sheets-Sheet 2 i FIG.4

INVENTOR HANS SENGEBUSCH ATTY.

United States Patent i PAYSTATION COIN APPARATUS Hans Sengebusch, Ingleside, Ill., assignor to General Telephone Laboratories, Incorporated, a corporation of Delaware fApplication September 28, "1955, Serial No. 537,231

20 Claims. (Cl. 179-'6.3)

This invention relates in general to a coin control arrangement and more particularly to a coin control arrangement including several magnets and certain associated equipment of the type generally used in a prepay telephone paystation for controlling the collection and refunding of a coin or coins deposited thereat. In the usual prepay telephone arrangement, both magnets of a two magnet coin control apparatus are energized for either refunding or collecting a deposited coin, depend ing on the direction of energization, and must be energized as long as the particular function is to be performed. In the present invention one magnet is effective to collect a deposited coin, and after it is deenergized the coin apparatus remains in the collect position so that any coin deposited thereafter is collected without further apparatus or equipment operation or in other words the paystation is then utilized as a postpay paystation. The other magnet, when energized, operates the equipment to a refund position to refund a deposited coin after which all elements are returned to normal, or if the paystation is already in the postpay position mentioned above, the equipment is thrown into the refund position and then returned to the normal or unoperated position. As disclosed in U.S. Patent 1,043,219, issued Novemher 5, 1912 to Forsberg, and as is well known in the telephone art it is customary at a prepay telephone paystation to deposit a coin or coins in a coin chute before a connection can be extended. A deposited coin actuates a coin trigger so that certain electrical circuits are rendered effective to thereby signal the central office over a trunk thereto; prepare an energizing circuit for the coin magnets so that they can dispose of the deposited coin, and also permit operation of the central ofiice equipment to complete the call. The latter condition, of course, being possible only on the deposit of a predetermined coin value as set by the requirements of the system. The coin after operating the coin trigger, which is held in its operated position by an appropriate mechanism, comes to rest on a pivotally mounted coin trap where it isheld until the coin magnets are energized to operate an armature to trip the trap for either collecting or refunding the deposited coin. The energization of the magnets also allows the coin trigger to return to its unoperated position while the circuit it prepared tothe coin magnets is maintained by the energized magnets. The described operation is usually controlled by a timed high voltage electrical pulse sent on release of the call over the circuit prepared by the coin trigger to energize the magnets, and the magnets are then deenergized on termination of the pulse. Deenergization of the magnets permits the armature to return to its normal position and the point in the magnet energizing circuit prepared by the coin trigger and held by the energized magnets is then opened. The trap of course pivots to release the coin under control of the operated armature and then returns to normal. Both magnets of the coin control apparatus in the described system are energized, whenever a coin is to be disposed of, and the polarity of the may be caused by striking'or' banging the paystation;

Patented Sept. 22, 1959 pulse determines whether a collect or refund operation takes place, as the polarity controls the direction in which the magnets are energized.

In the present invention one magnet hereinafter referred to as a collect relay is associated with the line, and on answer of a call initiated from its associated station it is energized by the reversal of battery on the line, as described in an application Serial No. 537,240 by Lomax filed on September 28, 1955 simultaneously with the present application.

When energized, the collect relay causes an armature and the coin trap, operatively connected thereto to be rotated to a position where a deposited coin is collected. Under circumstances which will be described when no coin is on deposit, the trap remains unoperated, however the rotated armature is always retained in the collect position by an apropriate latching arrangement to be described resulting in the coin trap being arranged so that any coin deposited thereafter falls directly into the coin collect box. The paystation is now arranged in a postpay position. On calls to a local subscriber, placing the paystation in a postpay position is of no value, but on toll calls where the deposit of a substantial load in coins may be required before the call can be completed, it has been found that the magnets at the station may be unable to trip the trap to collect the coins. To avoid this condition, it is of great benefit to place the paystation in a postpay condition so that when coins are deposited preparatory to an operator completing a toll call, they fall directly into the coin hopper and a collect attempt need not be made. A further advantage, due to the fact that heavy coin loads need not be collected in this arrangement, is the elimination of the special high voltage supply and associated equipment at the central ofiice for controlling the collect operation.

A circuit for the other magnet or refund relay is prepared, when a deposited coin operates the coin trigger on initiation of a call, or by the operated collect relay on answer of a call, and on release of the call, either before it is answered or after the collect relay has operated, a circuit is completed to energize the refund relay for a predetermined time as described in the aforementioned Lomax application. The energized refund relay operates the aforementioned armature to a refund position. When the refund relay is deenergized, the armature is restored to normal so that the paystation once again serves as a prepay type paystation, and the point was released before being answered the operation of the armature to the refund position operates the coin.

trap to refund a deposited coin, after which the trap restores itself. On a toll call the refund relay is initially operated, as described in the aforementioned Lomax application, as soon as the paystation is connected to the CLR trunk, to refund the initially deposited coinf The operator on answering causes the reversal of battery to operate the collect relay which throws the paystation into a postpay condition and also prepares an energizing circuit for the refund relay to enable its operation on release of the toll call. The refund relay when again operated then restores all the operated equipment. As already indicated circuits for accomplishing all the aforedescribed and other operations of both the refund and collect relays are described inthe aforementioned Lomax application filed simultaneously herewith.

In addition to the above, an arrangement is provided to prevent cheating or any improper operation of the various mechanisms and associated equipment which Figure 1 is a top plan view of the invention with arm 9 and the contact arrangement omitted;

Figure 2 is a side elevation showing the manner of mounting arm 9 and the contact arrangement operated thereby;

Figure 3 is a side elevation with a portion of the bracket B removed to more clearly show the relationship between armature F, latch G, spring Y, and the retainer 1 attached to armature H; and a Figure 4 discloses certain additional structure which is incorporated with the invention for the purpose of preventing any disturbance such as banging on the pay sta tion from afiecting the operation of the invention. Figure 5 is a circuit diagram of a paystation such as described in the aforementioned Lomax application, which together with the switching equipment 500- and the CLR trunk 501 is intended to be used with the present invention.

Figure 6a and 6b illustrate diagrammatically the manner in which the coin trap 3a is operatively connected to the armature H.

-A coin deposited in and falling through the coin chute 7 (Figure l) of a prepay type paystation, such as disclosed in the aforementioned patent, strikes the coin trig ger projection V protruding into the coin channel, and the coin 7a then falls onto the coin trap 3a as shown in Figures 6a and 6b. The coin trigger is rotated about pivot 8 to allow arm 9 (shown in Figure 2) normally resting on the raised potrion 10 of the coin trigger to rotate in a counterclockwise direction about pivot 11 so that its arm 12 causes the projection 12b thereon to bring spring 13 into contact with spring .14 to prepare a circuit to the refund relay R and open contacts and 16 to remove the shunt around the dial springs 14a. The circuit eifects of the various spring operations may be readily understood by reference to Figure 5. The coin trigger is prevented from returning to its normal position by arm 9 which now rests against the back surface of raised portion 10. Springs 13 and 14 and contacts 15 and 16 also remain in their respective operated positions. A loop circuit is completed to the central ofiice over the +L and L conductors, rectifier 16a and dial springs 14a, and although relay C is connected thereto it does not operate due to the shunt provided therefor by rectifier 16a.

After a connection is extended over the switching equipment 500 and answered by a local called subscriber such as S9, battery is reversed on the trunk so that rectifier 16a is no longer effective to shunt current from magnet C, and it energizes to attract armature F. As shown in Figure 3, spring I normally tends to rotate armature H in a'clockwise direction about pivot O which is mounted on brackets B and B. Armature H, however, is prevented from rotating by latch G, which is normally retained under I by spring Y. When armature F is attracted due to the energization of magnet C, latch G is moved to a position under the aperture 17 despite the counteracting tension of spring Y. Armature H on being rotated under the action of spring I causes the rotation of M as it rotates plate D upon which point E of section M rests. Arm 12a formed with plate D and controlled by armature H is moved in a clockwise direction to hold springs- 13 and 14in contact and contacts 15 and 16 open. Armature F simultaneously closes contacts 18 and 19 to shunt current from relay C as may be seen by reference to Figure. 5. transmission over the loop circuit to. the calledv party.

Armature F is retained in, its operated position, however,.

as. spring I rotates armature H in a clockwise direction to bring latch G into engagement with aperture 17 and maintains armature H in its operated position. Spring Y. now also forces latch G against the side of aperture17 to aidin retaining the entire mechanism. including re tainer I and armature H in an operated position. Simultaneously withtherotationof. armature H. in a clockwise.

direction plate'D op'eratively controlled thereby as may This is done to prevent relay C from afiecting be seen in Figure 2 is likewise rotated. The arm D1 in Figure 6a, formed integral with plate D, is also rotated to move pin D2 in a corresponding arc. Plate D3 which supports the coin trap 3a is now caused to rotate about D4 to the position 2a shown in Figure 6b. The coin trap is rotated about 3b due to the weight of the coin overbalancing counter-weight 3c and the depositedcoin guided by the position of D3 falls into the collect box and is thereby collected. The trap 3a returns to its unoperated' position due to the action of weight 3c, but any coin now deposited overbalances the weight and rotates trap- 321' so that the coin falls directly into the collect box. The circuit prepared torefund relay R through'springs 13" and 14 is completed through rectifier17a to ground on release of the call by a timed high voltage positive pulse, applied over the line conductors.

Energization of relay R attracts armature H in a counterclockwise direction against the tension of spring I and of spring Y asserted through latch G and retainer I for preventing rotation in the latter direction. When aperture 17 is disengaged from latch G, spring Y returns latch G and armature F to their normal unoperated positions. Contacts 18 and 19 open to remove the shunt from relay C. Armature H operates plate D, arm D1, pin D2 and plate D3 as before described with the exception that they are now operated in the opposite direction. As no coins are on deposit at this time the coin trap does not rotate about 3b nor is a refund made. In the refund position cylindrical portion 12a, which is operatively controlled by armature H through plate D, is forced against 12 and rotates arm 9 in a clockwise direction to disengage 9 from raised portion 19 of the coin trigger. Springs 13 and 14' are maintained in'contact while 12a is passing through its neutral position as arm 9 holds 12b against spring 13 until 12a strikes 12 to pivot 9 in a clockwise direction. The coin trigger now returns to its normal unoperated position as arm 9 is out of engagement with 10, while springs 13 and 14 are kept closed and contacts 15 and 16' placed under 9. At the end of the time pulse, winding R.

kept open by 12a which was rotated in a counterclockwise direction. Wire M in its final position limits the travel of the coin trigger to ensure that portion 10 is properly is deenergized and armature H is rotated in a clockwise direction under the influence of spring J, however, it is prevented from rotating beyond its equilibrium position. when retainer 1 strikes latch G. Simultaneously 12a. is. moved away from spring 13 to allow springs 13 and 14 to open and contacts 15 and 16 to close and as portion 10 is. in its normal position lever 9 comes to rest thereon as. shown in Figure 2 without closing springs .13 and 14. As.

springs 13 and 14 open, the circuit to Winding R is completely disconnected, and with contacts 15 and 16 closed the shunt around the dial springs is reestablished to prevent extension of a call from the paystation without the deposit of a coin.

It will be appreciated that on release of an unanswered call a timed pulse is sent to operate relay R as described. As relay C was not operated to trip the trap for a collect operation, the deposited coin causes trap 3c to rotate. about 317 when the support of plate D3 is removed. However as D3 is operated in a direction opposite to that on a collect operation, it is now in position 1a to guide the coin in a refund direction instead of in a collect direction.

On restoration of refund relay R, armature H, springs 13' and 14, contacts 15 and 16, plate D, arm D1, pin D2 and plate D3 are returned to normal, while the coin trap 3a is already returned to normal by the action of weight 30.

A toll call by a subscriber at a paystation of the typedescribed is initiated with the deposit of a coin to operate R first throws armature H and the trap into the refund position, and the deposited coin is refunded. Contacts 15 and 16 are closed on restoration of winding R at the end of the timed pulse, and the coin trap, armature H and springs 13 and 14 are returned to their normal position in a manner already described.

I he operator on answering automatically reverses battery on the trunk to energize winding C to attract armature F and allow armature H to rotate as previously described under influence of spring I. Armature H when rotated in a clockwise direction under the influence of spring J, rotates its associated plate D and causes the portion E of the wire M, which is associated with plate D to be raised and rotate wire M in its bracket L which is mounted upon B. Attached to bracket L is portion E which is indented as shown in Figure 2 so that it grasps wire M firmly to prevent M from moving in a horizontal direction and becoming disengaged from the armature plate D. Wire M is shaped so that a portion thereof M extends under the coin trigger as shown in Figure 1 and normally prevents the coin trigger from rotating in a direction out from the plane of the paper so that 9 in its unoperated position is sure to be properly resting thereon. It now rotates in a direction to engage the back of the coin trigger to cause it to rotate about the coin trigger pivot 8 in a manner similar to the rotation caused by a deposited coin. The operated trigger rotates arm 9 about pivot 11 to cause 12 to close springs 13 and 14 and open contacts 15 and 16 in a manner described. Simultaneously 12a in rotating in a clockwise direction engages spring 13 so as to bring it into engagement with 14 and open contacts 15 and 16. Opening of contacts 15 and 16 is now unnecessary as a connection is already established to the operator and she thereafter controls the further extension of the connection. Armature H and plate D3 are retained as before described in the collect position so that the trap will now drop any coin deposited at the request of the operator directly into the coin hopper. The paystation being in the postpay position enables the operator to collect the desired value of coins before completing the connection without the necessity of operating a coin magnet and the consequent danger of being unable to collect or refund the coins if the load is too heavy. On release of the call, a timed pulse is sent to energize the relay R and the arrangement is returned to normal as already described. It will be noted at this time that the coin trigger was deliberately tripped by M to ensure that the refund relay is energized while 12a is passing through its neutral position. Thus if arm 9 were not allowed to fall freely, projection 12b would not keep springs 13 and 14 closed until 12a strikes 12 and 13 to rotate 9 in a direction enabling the coin trigger to return to normal and 13 and 14 closed respectively. Thus if springs 13 and 14 opened while 12a was in its neutral position the refund relay R would be deenergized possibly before G has been positioned under latch I.

Figure 4, as previously mentioned, is an arrangement whereby the mechanism is prevented from being disturbed by any blows, banging or hammering on the coin box or paystation. Armature F is provided with an extension Q formed perpendicularly to the plane of the paper and which is normally arranged to enter the slotted portion of element W on operation of armature F. It cannot then be released by banging as armature F cannot be disengaged from W except when the armature H is operated in a refund direction by relay R to allow the upward movement of armature F which in turn permits extension Q to be disengaged from W. On the other hand Q cannot be brought into engagement with W and retained in that position to permit a latching of armature H unless armature F is operated by winding C. To accomplish these functions, W is pivoted on a wire U so that any shock caused by hanging rotates it from the position where it can engage Q. It rotates at U to a position where one of its fingers is under Q and thus armature F is prevented from moving into a position corresponding to the one ited to such uses, I desire the scope of the invention to be defined by the claims appended hereto.

What is claimed is:

1. For use in a telephone system having a paystation at which a coin must be'deposited before a call may be extended, apparatus thereat automatically controllable for causing said coin to be refunded, coin control means thereat automatically controllable for collecting any deposited coin and thereafter effective for enabling any later deposited coin to be collected by virtue of its deposit alone, and means operated by said apparatus in response to said apparatus being controlled for restoring said coin control means to normal.

2. In a coin collector having a trap for retaining a deposited coin, a pair of magnets, coin control means operated in response to one magnet being energized for controlling said trap to enable the collection of any coin thereafter deposited despite the subsequent deenergization of said one magnet and for enabling the energization of the other magnet, and means operated by said other magnet in response to its energization for returning said coin control means to its unoperated condition.

3. For use in a telephone system having a paystation with means for receiving a deposited coin after which a call-may be automatically extended to an operators position, a winding at said paystation, means at said paystation operated on deposit of a coin thereat for preparing a circuit for said winding, means operated on extension said completed prepared circuit, another winding at said paystation, means for energizing said other winding at said paystation on answer by the operator at said position, an arrangement operated by said other energized winding for maintaining said paystation in a condition whereby any coin thereafter deposited is automatically collected by virtue of its deposit, and means operated by said energized other winding for preparing said circuit to said one winding to thereby enable said paystation to be restored to normal on energization of said one windmg.

4. In a coin collector having a first means for retaining a coin in one position on deposit thereof, one magnet arranged to control said first means to cause the collection of said retained coin on energization and another magnet arranged on energization to control said first means to cause the refund of said retained coin in response to said coin not being collected, other means operated by said one magnet on energization for preventing a coin thereafter deposited from being retained and for causing the collection of said coin thereafter deposited despite the deenergization of said one magnet, contact means oper-' ated by said one magnet on energization for enabling energization of said other magnet, and means operated by said other magnet in response to being energized and deenergized, for restoring said other and said contact means to their respective unoperated condition and for controlling said first means for causing any coin thereafter deposited to be retained in said one position.

5. For use in a telephone system, a paystation having a pair of windings, means for energizing one winding at said paystation on answer of a call from said paystation, means at said paystation for preventing initiation of a call therefrom unless a coin is deposited thereat and means at said paystation for receiving and retaining a coin deposited thereat, coin means controlled by said one winding: on 'energization for collecting a received and retained coin, said coin means controlled by the other winding at said paystation on energization for refunding a received and retained coin, contact means controlled by said energized one winding or a deposited coin for enabling said other winding to be energized, means controlled by said other winding on energization for rendering said contact means ineffective, control means controlled by said one energized winding for enabling any coin thereafter deposited to be collected without further energization of said one winding, and means operated by said other winding on energization and deenergization for restoring said control means to normal.

6. For use in a telephone system having a paystation with means for receiving a deposited coin after which a call may be automatically extended to an operators position, a pair of windings, means at said paystation operated on deposit of a coin thereat for preparing a circuit for one of said windings, means operated on extension of a call from said paystation to said operators position for energizing said one winding over said prepared circuit for refunding a coin deposited at said paystation, means for energizing the other winding at said paystation onanswer by the operator at said position, an arrangement operated by said energized other winding for maintaining. said paystation. in a condition whereby any coin thereafter deposited is collected by virtue of its deposit, means operated by said energized other winding for preparing said circuit to said one winding, and means operated;

when said one winding is energized over said circuit for thereafter enabling a coin to be deposited at said pay station without being collected by virtue of its deposit.

7'. In a coincollector having a mechanism operated on deposit of a coin therein for preparing a circuit, a coin control arrangement comprising a pair of windings of which one is energized at certain times over said preparedcircuit for restoring said prepared circuit and for causing;

a deposited coin to be refunded and another of which is energized at another time for causing a deposited coin to be collected, firstmeans associated with the other winding and operated when said other winding, is energized for deenergizing said other winding and for caus ing any coin thereafter deposited to be collected by virtue: of its deposit, second means operated bysaid other energized winding if the one winding has been previously energized for again preparing said circuit, and means operated when said one winding is thereafter energized over said prepared circuit for returning said: first and second means to their unoperated condition.

8. In a coincollector, a pair of, windings, means for preparing a circuit for one winding on deposit of a coin,.

means for holding a deposited coin, said one winding energized over said prepared circuit under. certain conditions for refunding a deposited and heldicoin, the other winding energized under other conditions for collecting: a depositedandheld: coin, control means operated by said: other winding on energization for operating said meansfor preparing said circuit for said onetwinding and for causing any coin thereafter deposited to be collectedby: virtue of its deposit, and means operated by said energized one winding for rendering said control means ineffective:

to cause any coin deposited thereafter to be collected by virtue of its deposit.

9. In a coin control mechanism having a coin deposit:

chute for receiving coins and a cointrap operable to allow a deposited coin to fall in either of'two directions to collect or refund itrespectively, an armature having,

meansfor operating said trap,,a magnet for operating said armature-in one direction to operate said 'trap for caus-- ingta deposited coin to: fall in one direction to refundit, means for operating. the armature in another directionto operate the trap to collecta deposited coin, alatch normally preventing operation of the armature in said,

other direction, a second magnet, and means controlled by the second magnet when operated for removing said latch: to permit operation of the armature in the second direction.

10. A coin control mechanism such as claimed in claim 9 including means for holding said armature in its operated position when: operated in said other direction to collect any coin deposited thereafter.

1 1a. A coin control mechanism suchas claimed in claim: 10 in which there is means controlled by a subsequent operation of said first magnet for rendering said holding, means ineffective.

12. In a coin collector constructed so that a deposited coin comes to rest on a trap arranged to support the deposited coin, an armature having an operative connection to said trap whereby it controls said trap, one relay energized for operating said armature to control said trap so that a deposited coin is collected, another relay energized for operating said armature to control said trap so that a deposited coin is refunded, means operated by said deposited coin for enabling the energization of said other relay, means operated by said energized one relay for retaining said armature in its operated position despite deenergization of said one relay to thereby control said trap so-that any coin thereafter deposited is collected by virtue of its deposit, means operated by said one relay for maintaining operated said means for enabling the energization of said other relay regardless of the deenergization of said one relay, and means operated by said other relay when energized for enabling the return of said coin-operated means and said armature to normal.

1 3. In a coin collector having a mechanism operated to preparea circuit on deposit of a coin and a trap normally arranged to retain a deposited coin, the combination comprising one relay energized at certain times to also prepare said circuit, an armature arranged to be operated in one direction under control of said energized relay for operating said trap to one position for collecting. a deposited coin, means for retaining said armature in said operated position when said one relay is deenergized after its energization to maintain said trap in a position where coins thereafter deposited are collected without being retained by said trap, another relay energized over said prepared circuit at other times for operating said armature in another direction to operate said trap for refunding a deposited coin retained thereon and also operating said armature from its first operated position, said other relay thereafter deenergized for restoring said armature and trap to their unoperated position to enable a deposited coin to be retained on said trap.

14. For use in a telephone system having a paystation with a pair of windings, means for energizing one of said windings at said paystation if a call from said paystation proceeds in one manner, means for energizing the other winding at said paystation if said call from said paystation proceeds in another manner, means at said paystation for preventing initiation of a call until a coin is deposited thereat and which paystation is arranged for receiving, retaining and collecting or refunding a. coin deposited thereat, the improvement comprising coin means controlled by said one winding when energized for causing a deposited and retained coin to be collected, said coin means controlled by said other windingfor causing a deposited and retained coin to be refunded, control means operated by said one energized winding for deenergizing deposited to be. collected without further energization of said one winding, and means operated by said other winding when energized and deenergized for restoring extension of a call from said paystation to said operators position for energizing said winding for refunding a coin deposited at said paystation and for thereafter restoring said prepared circuit, another winding at said paystation, means for energizing said other winding of said coin magnet at said paystation on answer by the operator at said position, means operated by said other energized winding for deenergizing said other winding whereby a talking circuit may be completed between said operators position and said paystation, the improvement comprising an arrangement operated by said other energized winding for maintaining said paystation in a condition whereby any coin thereafter deposited is collected in response to a request therefor over said talking circuit without further operations despite the deenergization of said other winding, means operated by said energized other winding for preparing said circuit to said one winding, and means operated on the energization of said one winding for causing said paystation to be restored to normal.

16. In a coin collector having means for receiving and retaining a deposited coin, an armature operated to one position controlling said means to cause a retained coin to be refunded, said armature operated to another position for controlling said means to cause a retained coin to be collected, a first magnet for operating said armature to said one position for controlling said means to refund a deposited coin, control means for operating said armature to said other position for controlling the first means to collect a deposited coin, said control means normally ineffective to operate said armature to said other position, a second magnet for rendering said control means eflfective to operate said armature to said other position to control said first means to collect a deposited coin, and means effective to retain said armature in said posited coin is collected by virtue of its deposit.

17. In an arrangement such as claimed in claim 16, means operated by said second magnet for enabling the energization of said first magnet.

18. A coin control apparatus for a prepay paystation in which a coin is normally deposited preparatory to a call being extended therefrom and which has means normally efiective to collect said coin on completion of a call, comprising means at said paystation automatically operated on completion of a call for converting said prepay paystation to a postpay paystation, and means at said paystation automatically effective under another condition to convert said postpay paystation to a prepay paystation.

19. A coin apparatus having one magnet for a collect operation and another magnet -for a refund operation, an armature operated in one direction on energization of one magnet and in the other direction on operation of the other magnet, a coin trigger controlling a circuit for energizing said other magnet, and means operated by said one magnet when energized for enabling the completion of the circuit for said other magnet and for operating said coin trigger to ensure that said circuit is controlled so as to enable said other magnet to remain energized while said armature is operated in said other direction.

20. An arrangement such as claimed in claim 19 in which said means for operating said coin trigger includes means for positioning said coin trigger.

References Cited in the file of this patent UNITED STATES PATENTS 2,672,513 Lomax Mar. 16, 1954 FOREIGN PATENTS 206,559 Switzerland Nov. 16, 1930 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 2,905,763 September 22 1959 Hans Sengebusch It is herebi certified that error appears in the-printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 8, line 65, after "deenergizing" insert said one winding and for enabling any coin thereafter column 9, line 22, after "position insert for Signed and sealed this 2nd day of August 1960.

(SEAL) Attest:

KARL H, AXLINE ROBERT C. WATSON I Attesting Officer Commissioner of Patents

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