US2674655A - Coin control actuating mechanism - Google Patents

Description

April 6,1954 R. .1. GALLAGHER 2,674,655

COIN CONTROL ACTUATING MECHANISM Filed Oct. 13, 1951 3 Sheets-Sheet l INVEN TOR. Ray John Gallagher April 6, 1954 R. J. GALLAGHER COIN CONTROL ACTUATING MECHANISM 3 Sheets-Sheet 2 Filed Oct. 13, 1951 FIG. 2

M, I RM m m M r V 1 N I n h W y a R Y B y R. J. GALLAGHER 2,674,655 COIN CONTROL ACTUATING MECHANISM April 6, 1954 Filed Oct. 15, 1951 5 Sheets-Sheet 3 FIG. 4 PREPAY f LI HOOK sw. DIAL AND SPRINGS s RESTORING WA II MAGNET TRANSMITTER II T RINGER com TRIGGER R AND coma m0 SPRINGS 42 1| RECEIVER com MA 4 Q ""W m 2 com TRANSMITTER com TRANSMITTER 5 OS AY RESTORING com TRIGQER AND SPR es.

RIO

ECE IVER 23 HOOK SW. SPRGS.

MICRO SW OONTS.

' COIN MAGNETS L2 INVENTOR. Ray John Gallagher Patented Apr. 6, 1954 UNITED STATEfi FATENT OFFICE COIN CONTROL ACTUATING MECHANISM Application October 13, 1951, Serial No. 251,211

9 Claims.

This invention relates in general to coin controlled actuating devices and more specifically to coin controlled actuating mechanism particularly adaptable for use with telephone paystations.

As applied to telephone paystations, the principal object of the invention is to provide a mechanism arranged to require the deposit of two coins of the same denomination, or a single coin of a different denomination, whereby calls cannot be initiated, or talking connections completed, between calling and called stations, until the required deposit is made.

Anotherobject of the invention is to provide a mechanism equally adaptable for use with either prepay or postpay paystations.

Another object of the invention is to provide a mechanism adapted for use with the universal coin chute mechanism disclosed in the eo-pending application of T. F. Cassidy, Jr., filed November 7, 1951, Serial No. 255,264;

As shown in the usual type of coin collector, for example in the O. F. Forsberg, U. S. Patent 1,043,219, issued November 5, 1912, a deposited nickel passes down a coin chute into a coin hopper where it strikes a coin trigger and temporarily comes to rest on a coin trap. The actuation of V the coin trigger serves to close certain contacts to ground one side of the line through the windings of a coin relay and this ground connection. serves for operating a switching arrangement to prepare apparatus at the central office to permit the operation of automatic switches to extend a local call. This ground connection is also subsequently utilized to energize the coin relay to collect or refund the deposited coins.

In its preferred form, this invention is arranged such that on local calls, two niekels or one dime must be deposited at a calling prepay paystation before dialing can be effective, and two nickels or one dime must be deposited at a calling postpay paystation subsequent to the answering of a call by the called station before the calling station is enabled to converse with the called station.

A feature of the invention is the inclusion of a microswitch in the mechanism, in which an actuator is operated by nickels only for controlling the operations of the microswitch.

Another feature of the invention resides in the provision of means for locking the microswitch actuator in an operated position responsive to the deposit of a single nickel.

Another feature is the inclusion of a magnet in the mechanism for restoring the microswitch to normal from its locked position.

Another feature of the invention, when used in conjunction with a prepayl telephone paystation, the provision of means whereby, responsive to the deposit of the first nickel, the dial springs are maintained shunted by way of contacts controlled by the microswitch although the coin trigger springs have been opened by the first nickel to remove a different shunt around the dial which was maintained by the coin trigger springs.

Another feature of the invention, when used in conjunction with a prepay telephone paystation, is the provision of means whereby, responsive to the deposit of the second nickel, the contacts controlled by the microswitch are opened to remove the previous shunt applied to thedial springs by the microswitch when the first nickel was de posited.

Another feature of the invention, when used in connection with a prepay telephone paystation is the provision of an arrangement whereby the microswitch restoring magnet is connected in series mm the coin magnet and will operate in series with the coin magnet on either collect or refund voltage for restoring the microswitch contacts to normal if an odd number of nickels have been deposited.

Another feature of the invention, when used in connection with a postpay telephone paystation is the provision of means whereby the microswitch restoring magnet is connected in series with theline and will operate as soon as the loop circuit is closed, thereby maintaining the microswitch inoperative until the battery is reversed responsive to the answering of a local call by a called station.

A further feature of the invention, when used in conjunction with a postpay telephone paystation, is the provision of means whereby the deposit of the first nickel operates the actuator which operates thev microswitch contacts to shunt the transmitter and remove a previous shunt on the transmitter by operating contacts controlled by the coin trigger.

Another feature of the invention, when used in connection with a postpay telephone paystation is the inclusion of means whereby the deposit of the second nickel controls the actuator to open the microswitch contacts and remove the previous shunt placed on the transmitter in response to the depositing of the first nickel.

Other objects and features of the invention will become apparent upon a further perusal of the specification taken in conjunction with the accompanying drawings comprising Figs. 1-5,

which shows by means of the usual diagrams a, suf- 3 ficient amount of apparatus to enable the invention to be described and understood and in which:

Fig. l is a front view showing the invention mounted on a coin chute mechanism of the type such as disclosed in the aforementioned co-pending Cassidy application.

Fig. 2 discloses a side view of the invention taken from the left of Fig. 1 with part of the frame and cover cut away.

Fig. 3 shows a partial view of the first plate of the coin chute such as disclosed in the previously mentioned Cassidy application and showing the actuator slot thereof and the position on which the apparatus of the invention is to be mounted on this coin chute.

Fig. 4 is a schematical representation of the circuit of a prepay telephone paystation including the invention.

Fig. is a schematical representation of the circuit of a postpay telephone paystation including the invention.

The same reference numbers to indicate the same or similar elements throughout the drawings.

A more detailed description of the invention follows.

Referring in particular to Figs. 1 and 2, it will be seen that the mechanism comprises essentially a mounting frame I having a microswitch 2 rigidly secured thereto by mounting screws 9 at the lower center portion. A restoring magnet 3 is rigidly secured by mounting screws 50 to an outwardly bent projection ll of the frame at the upper right-hand side. A pendulum 4 and shock lever 5 are pivotally mounted at the upper lefthand corner. A cover 6 is mounted over shock lever 5 and the upper section of pendulum 4 for providing upper bearing supports for the pivotal mountings of lever 5 and pendulum 4. For the sake of clarity, the face of cover 6 has been cut away leaving only the sides and mounting ears as shown. In order that the position of cover 6 will not change when being secured to the frame,-

positioning studs 1 are rigidly afiixed to frame I and project outward into holes provided in l the mounting ears of cover 5 so that when mounting screws 8 are inserted and tightened down, the position of cover 6 will not shift. The entire mechanism is now mounted on the coin chute by means of holes provided therein and held in position by means of mounting screws l4 being inserted in the mounting holes 14 of the coin chute.

The microswitch 2 may be of any suitable type, wherein normally open contacts are closed and opened by means of rotation of a pivot pin. The pivot pin l5 of microswitch 2 is slotted at its out ward end and into this slot is pressed the U shaped end of the wire actuator IS. The restoring magnet 3 may be of any suitable type, and is disclosed as having an armature I1 pivoted at pin 34, and having an extension thereon such as arm l8 extending around the front of the magnet towards the pivot pin l3 of the pendulum 4. The pendulum 4 comprises a flat shaped piece of metal with the upper end extending up, out, and bent back to form a U shaped section, thereby providing two bearing points on the pivot pin l3. At the right side of pendulum 4, a portion extends to the right and out at right angles forming a flange 20. At the left side of pendulum 4, a portion extends to the left and out at right angles to form a flange 2|. An extension on the bottom of pendulum 4 extends downward in an arcuate shape to form finger 22. At the approxi-' have been used mate center of finger 22 is a recess 23 having a slanted portion 24 formed at the bottom edge thereof. It will be noted that the lower end of finger 22 extending from the recess 23 is narrower in width than the upper end. The shock lever 5 comprises a piece of flat material bent into a U shape and having the closed end of the U at the top. The two lower ends of lever 5 thus provide two bearing points on the pivot pin l2. The outer lower end of lever 5 has a recess 25 formed therein and the lower extreme end of the same side has a notch 26 also formed therein. The wire actuator l6 of microswitch 2 is stepshaped in form with the wire extending from pivot pin l5 over the front of the microswitch, inward at a right angle towards mounting frame I, then at a right angle parallel to frame I, with its outward end again bent inward at a right angle projecting through the opening, or port 21, in the chute, thereby resembling the shap such as shown in Fig. 2.

As mounted on the coin chute, it will be seen that when the wire actuator I6 is operated, the inwardly extending end will move down as the actuator is rotated and into the slots such as 28 formed in the ports such as 21, of the first and second coin chute plates 29 and 30 respectively. Before continuing with the general operation of the device, it will be remembered that the I mechanism is arranged to operate only when hand edge of the coin chute slots such as 28.

nickels are deposited, since the inward extending end of the wire actuator [6 extends only into the path that nickels follow when they are deposited. It will also be remembered that, upon viewing Fig. 1, the nickels enter the coin chute at the upper left-hand corner and follow a path similar in shape partially to that of an inverted 8, passing from left to right under the pendulum 4 and shock lever 5, then turning and moving downward to the left, thereby striking the inwardly projecting end of the wire actuator Hi. It will also be noted upon viewing Fig. 1, that the dotted portions around pendulum 4, shock lever 5 and wire actuator I6 represent these elements of the mechanism in an operated position, while the complete lines represent these elements in the normal position.

To continue now with the general operation: As a nickel is deposited in the nickel slot of the coin chute, the nickel follows the above-described path. When the nickel strikes the projecting end of the actuator 16, the inertia of the nickel forces the actuator It downward, therebyrotating pivot pin 15 of the microswitch 2 in a counterclockwise direction, thus closing the normally open contacts (not shown except schematically in Figs. 4 and 5) located within the microswitch. It will be noted at this point, that the right-hand edge of the finger 22 rests lightly against the inwardly bent end of the actuator 16. As the actuator I5 now continues in its downward direction, the forward, or right-hand edge of finger 22 continues to ride against actuator [6, since during this time the pivotal balance of pendulum 4 is so arranged that it will rotate in a counterclockwise direction to maintain a light frictional engagement of the forward edge of finger 22 with the end of actuator I6.

At this time it will be assumed that the nickel, in its travel, has approximately reached the rightthis position of the nickel, the end of actuator I6 now passes recess point 32 of finger 22 and the pendulum 4 will quickly rotate an additional amount in the counterclockwise direction. However, sincethe movement of the nickel is very rapid, the end of actuator Iii durin the present movement will engage the forward, or right-hand, edge of the lower end-of finger'22. At this time, the nickel will have forced actuator i 6 all the way down intothe coin chute slots 28, andlby so doing will pass over the actuator I6, thereby allowing the spring action of microswitch 2 to tend to quickly return actuator ltto normal. However, as actuator It moves in its upward position, it rides against the forward edge of the lower part of finger 22, then down the slanted portion 2a, into recess 23 and finally to rest against locking edge 33. The pendulum 4 will have continued to rotate counterclockwise as actuator It continues its return movement and up to the point that actuator It engaged lockin edge 33. The positions of pendulum 4 and actuator liiwill now be those shown in the dotted lines. Since the'shock lever 5 has had no function up to this point, shock lever'5 will have followed pendulum 4 in its move-- ment until lever 5 has taken its position'shown in the dotted lines. This movement of lever 5 was caused due to the slight engagement of the upper left-hand corner of pendulum 4 with the lower right-hand edge of lever 5.

Before continuing with the operation of the device, it is thought advisable to briefly describe the main function of shock lever 5 at this time. Assuming now that shock lever 5, pendulum 4 and wire actuator it are in the positions shown in the dotted lines as aresult of the deposit of the first nickel. At this time, in case the paystation containing this mechanism should be jarred or shook either intentionally or unintentionally, the

pendulum 4- may tend to rotate clockwise and the weight of actuator It may cause it to vibrate and disengage from pendulum 4, thereby allowing the actuator to restore to normal and open the microswitch contacts. This would enable the paystation user to complete a call merely by depositing only one nickel. Shock lever 5 has been provided in this device mainly to prevent the above-mentioned occurrence. As the paystation is either jarred or shook, the resultant movement will cause the shock lever 5 to move quickly in a counterclockwise movement ahead of any movement of pendulum 4. As a result, the movement of lever 5 will engage notch 26 against the upper corner of flange 2|, thereby preventing pendulum 4 from moving out of its dotted position. As soon as the shaking or jarring movement of the paystation has stopped, the weight of lever 5 is such that gravity will. cause it to rotate clockwise about its pivot pin l2 and back to its former dotted position. The device is now ready for the deposit of the second nickel.

When the second nickel is deposited, it follows the-same'path as taken by the first nickel. It will be noted in particular that the position of'the pendulum 4 and wire actuator I 6 is that as shown in the dotted lines of Fig. 1. When the second nickel strikes the inwardly extending end of actuator [6, which is looked as shown in the dotted position, actuator i6 is again forced downward and will slide along the right-hand edge of the recess 23 with no apparent rotation of pendulum 4. However, at the moment that the end of actuator l5 strikes the slanted portion 24 of the recess 23, the pendulum 4 is rotated rapidly in a clockwise direction. Since pendulum 4 is pivoted at only one point, the inertia due to the mass, or weight, of the pendulum-will tend to rotatethe pendulum a bit farther and possibly slow its return motion in trying toattempt its normal balance; During the time that the pendulum isreaching its maximum clockwise motion, the

second nickel will have passed over the end of actuator l6 and actuator It will now return to itsnormal unlocked position as shown in the closed lines, thereby rotating pivot pin l5 in a clockwise direction and opening the contacts contained" within microswitch 2. The shock lever 5, pendulum 4 and wire actuator It will again be at normal as shown in the complete, or dark, lines.

Restoring magnet 3 has been included in the mechanism as a means for at times preventing the wire actuator it from looking under the locking edge 33 of the pendulum 4 prior to the deposit of a first nickel and for at other times unlatching, or unlocking, the actuator 16 from under the locking edge 33 after only one nickel has been deposited. Assuming for the present that the wire actuator 58- isnot to look as the result of an initial deposit. of a ickel: The restor ing magnet 3 is energized in a manner to be described later. The right-hand end of armature I1 is then attracted towards the core of the magnet, thereby rotating armature H in a counterclockwise direction about pivot pin 34. Arm'ature I 1 therefore carries extension arm- H3 in a downward direction and at the end of their movement extension end IQ of the armature extension arm l8 engages flange of pendulum 4, thereby holding pendulum 4 in its normal position. A nickel may now be deposited and finger 22 of pendulum t will not follow the motion of actuator 16; thus actuator It cannot be locked in an operated position during the time that magnet 3 is energized. Assuming in another case that the mechanism has been operated, only'a single nickel has been deposited as part of the charge of an assessed fee and it is desired to" restore the device to normal. The position of the actuator l6 and pendulum 4 at this instant will be such as shown in the dotted lines. The restoring magnet 3 is again energized in a manner to be described later; It will be noted, in this caseupon viewing the dotted lines, that in the locked position of actuator IS, the flange 29 of pendulum ll bears very lightly against extension endv iii of armature extension arm 18. Now, upon energization, restoring magnet 3 will operate its armature I! as previously described and since flange 20 is engaged with extension end l9, perk dulum 4- will rotate in a clockwise direction as the armature I! is operated. Hence, the inwardly turned end of actuator IE will ride along lock,- ing edge 33' until it has passed recess point 32, at which time, the actuator 16 will now return to normal as previously described and open the contacts of microswitch. 2 by rotating pivot pin Hi. It willbe noted that armature i1 is restoredto normal when magnet 3 is deenergized' by means of the biasing action of springs and 36. Operations of the mechanism when included in the circuits of prepay and postpay telephone pay stations will now be described.

Referring in particular to Fig. 4, it will be seen that this schematic drawing represents a typical closed, while the winding of the restoring magnet 3 is connected in series with the winding of thepolarized coin magnet-8D when contacts 43 05 the "*2 coin trigger are closed. The coin trigger is shown in the normal position; and in such case, normally closed contacts 42 maintain an obvious shunt of the dial springs including magnet 3. Such is the case with the paystation unoperated and at normal.

Assuming now that a local call is to be initiated at the paystation, the following operations will take place: As the receiver R is removed from the hookswitch, contacts 44 and 45 are closed, thereby closing the loop including the transmitter T across the line. Dialing is prevented at this time, due to the shunt maintained across the impulse springs of the dial by normally closed contacts 42 of the coin trigger. At this time the first nickel is deposited and the mechanism operates as previously described, namely the coin operates the wire actuator I6 to close the microswitch contacts 4E5, thereby placing a shunt around the impulse springs of the dial. As the nickel progresses down the coin chute and into the coin hopper it strikes and operate the coin trigger, thereby first closing contacts 43 to place the two windings of coin magnet 80 and restoring magnet 3 in series with the positive line conductor. Contacts 42 of the operated coin trigger are now opened, thus removing the previous, or normal, shunt around the impulse springs. The removal of this previous shunt around the impulse springs has no effect at this time, due to the shunt just placed on them by the operated microswitch contacts 40. The mechanism is now ready for the deposit of the second nickel, which when deposited operates the mechanism as previously described, namely the coin strikes actuator I6, which in turn unlocks from pendulum 4. The nickel continues down the coin chute, into the coin hopper and past the oper-- ated coin trigger. Upon unlocking, actuator It returns to its normal position, thereby opening microswitch contacts 40. The opening of microswitch contact 40 removes the shunt placed across the dial springs by the first nickel and the calling party may now dial the desired number. If the call is abandoned or completed, coin refund or coin collect battery is returned from the associated seized repeater (not shown) after the receiver is replaced on the hookswitch to operate polarized coin magnet 80 to refund or collect the deposit made on the calls, as the case may be. Restoring magnet 3 will also operate, but with no effect on the device at this time. If only one nickel is deposited, and it is desired to abandon the call, coin refund battery is returned to the paystation from the seized repeater in response to replacing the receiver on the hookswitch to operate the polarized magnet for refunding the deposit and for operating restoring magnet 3 to unlock actuator I6 from pendulum 4, thereby opening microswitch contacts 40 and restoring actuator I6 to normal.

If a call is initiated and instead of a first and a-second nickel being deposited, as just described and a dime or a quarter was deposited instead, these coins would each travel over separate paths in the coin chute, thus by-passing the device and then into the coin hopper and operate the coin trigger, The operation of the coin trigger would open contacts 42 to remove the shunt from the dial springs. The paystation mechanism and equipment will operate the same from this point on as just described.

If a toll call is initiated from this type paystation, the equipment will operate as previously described when two nickels, or a dime or quarter I are deposited for initiating a call. However, subsequent to this operation, the calling person dials the operator, who then refunds the initial deposit by causing coin refund battery to be returned to the paystation for operating the coin magnet. The operator now extends the call to the called party and requests the calling person to deposit the required toll fee before completing the connection. When the toll call is completed and the calling party replaces his receiver on the hookswitch, the operator returns coin collect battery in the well-known manner to the paystation to operate the collect action of the coin magnet. It will be remembered that each time the coin magnet is operated, the restoring magnet 3 is operated, thereby assuring that the actuator I6, microswitch contacts 40 and pendulum 4 are restored to normal in case they have been operated due to the deposit of an odd number of nickels.

Referring now in particular to Fig. 5, it'will be seen that this schematic drawing represents a typical circuit such as used in a. telephone paystation of the postpay type and modified to include the new mechanism of Fig. 1 and the circuits controlled thereby. It will also be seen that the microswitch contacts 43, when operated are arranged so as to place a shunt around transmitter '1. Further, it will be seen that a sleeve has been added to the restoring magnet 3, thereby preventing the magnet from responding to dial pulses. Further, it will be seen that the restoring magnet 3 is connected in series with the transmitter T when the loop circuit is closed, due to the removal of the receiver R from the hookswitch. It is to be remembered during this particular description that although they are not shown as bein located together, contacts I0, II, 12 and T3 are all associated with the coin trigger, and are arranged so that a coin directly operates the two contacts 10 and II and will operate contact 12 only when it is first prepared for operation by the operation of magnet 60. Magnet directly operates contacts 10, II and 13.

Assuming that a local call is to be initiated at the postpay paystation, the following operations will take place: As the receiver R is removed from the hookswitch, contacts 44, 45 and 43 are closed, thereby placing transmitter T and restoring magnet 3 in series with the line, with restoring magnet 3 operating as soon as this loop circuit is closed. This loop circuit may be traced as follows: Inward from line L2, through the lower right-hand winding of the induction coil, up through the winding of restoring magnet 3, down and through rectifier RI, over and up through hookswitch springs 46 and 44, down to the left and up through transmitter T and coin transmitter CT, through the dial springs and out over line +LI. The operation of restoring magnet 3 prevents the microswitch contacts 40 from operating at the present. The calling party can therefore dial the desired number as soon as he removes his receiver, and upon answering by the called party, battery is reversed in the well-known manner. This reversal of battery causes restoring magnet 3 to release and coin magnet 60 to operate due to the arrangement of their rectifier shunts, since in following the above-traced circuit, the circuit may now be traced through rectifier R2 instead of through the winding of restoring magnet 3, and through the winding of coin magnet 60 instead of rectifier RI. The operation of coin magnet 63 operates the coin trigger springs to close contacts I0, II and". The-operation of contacts I0 and II 9 shunts transmitter T and also reduces the receiver R current due to the inclusion of resistance RI O. The operation of contacts [3 prepares a circuit for the future operation of coin magnet 50. In order for the calling party to talk to the called party the initial fee for the call must be deposited to remove the transmitter shunt. Assuming for the present that the calling party decides to deposit two nickels, the mechanism will operate as previously described, with the first nickel causing microswitch contacts ill to be closed which places a shunt around the transmitter T. However, the first nickel also operates the coin trigger which opens contacts 10 and ii, which removes the previous transmitter shunt and restores the receiver current to normal. The operated coin trigger also closes contacts 12 which shunts both the restoring magnet 3 and coin magnet to. Magnet 58 restores but the contact i3 is held. closed due to the operation of the coin trigger. The second nickel is deposited at this time and the mechanism operates as previously described, wherein the microswitch contacts to are opened to remove the shunt across the transmitter T. It will be noted that on this type paystation, the coins drop directly into the coin box. When the talking connection is completed and when both parties have replaced their receivers, battery is again reversed from the called end of the connection. Coin magnet 56 thus operates to reposition the coin trigger to normal, which in turn restores contacts 72 and 13 to normal. If a dime or quarter is deposited instead of the two nickels, the microswitch short is not placed across the transmitter as previously described, but instead either of these coins can operate the coin trigger which opens contacts 16 and ll to remove the transmitter shunt placed thereon when they were closed due to magnet 6e operating when the call is answered. Contacts 12 are closed as previously mentioned to shunt both the restoring magnet 3 and the coin magnet 60. The remaining operations are the same as just disclosed above.

If a toll call is initiated from this type of paystation, the procedure and operation is as follows: The receiver is removed from the hookswitch and restoring magnet 3 operates in series with the loop. The operator is then dialed and she in turn extends, but not completes, the connection and informs the calling party of the required toll fee. It will be noted that battery is not reversed due to the operator answering, therefore magnet 3 is still operated and coin magnet 60 does not operate at all during a toll call. As-

suming in this case that the toll fee is fifteen cents and that the calling party deposits a nickel and then a dime: Since magnet 3 is operated, the deposit of the nickel will have no effect other than to momentarily close and open the microswitch contacts 40; and since coin magnet 50 is not operated, the coin trigger contacts Ill and H are open and will remain open and thusbe unaffected by the nickel. The coin triggercontacts 12, which are prepared for operationwhen the coin magnet 60 is operated, will not operate at this time in response to the deposit of the nickel. The nickel thus drops directly into the coin box. The deposit of the dime will likewise unaffect coin trigger contacts Ill, H and 12 and will also drop into the coin box. The operator may now complete the extension of the call. At the end of the call, the operator may momentarily reverse battery to the calling pay.- statlon. Coin magnet 60 will operateresponsive 10 to this reyersal and prepare a circuit for coin magnet is, which will operate when the battery s res or d t ts normal polarity and thus return the col-n tr g er and contacts 13 to normal.

Having; described my invention, what, isv considc edas ew. desired to bare pr tected :by Letter Patent will be pointed out in the appended claims- ,Wha is-claime 'is:

1. In combination, a telephone p-aystation circuit having a co-in actuated mechanism associated therewith, p lsin contacts for transmitting: switch controlling impulses and arranged tobaconnected in series in said circuit, a first shunting circuit normally closed for disabling said ulsing contacts, a microswitch including contacts, actuating means associated with said micrcswitch and operated when a call is initiated responsive to the deposit of a first coin or a certain denomination for operating said microswitch, engagingmeans also operated responsive tothe operation of; said actuating mcansfor lookin said actua n m ns operated, a normally open second shunting circuit, said contacts 111- ,cl-udedin said second shunting circuit andoperated responsive to the operation of said microvswitcm for completing sa-id second shunting circult to also disable, said pulsing contactscoin controlled contacts subsequently operated by said deposited first coin ior removing .saidfirst shunting circuit ircm said pulsing-contacts, said actuating means reoperated responsive to the deposit cit-a secolidwcQm-of said, certain denomination, andmeans included-insaid engaging means operated-responsive tosaid reoperation of said actuating means for reoperat-ing said engaging means to unlock said actuating means, whereby said actuating meansrestores to normal and said mie iqswitch contacts are opened responsive to the restoration of .said actuating means for removing saidsecond shunting circuit from said pulsins contacts and said pulsing contacts are thereby nditi n df 1 p l ti n.

.2. In combination, a telephone paystation circuit havingca coin actuated mechanism associated therewith, pulsing contactsfor transmitting switch, controlling impulsesand arranged to be .connectedin series in said circuit, a first, shunting circuit normally closed for disabling saidpulsing contacts, amicroswitch having contacts, ,a-ctuatingmeans operated when a call is initiatedresponsivetothedeposit of a coin of a certain denomination for operating said microswitch, engag n meansoperated responsive to theoperation of said actuating means for lock nesa d actuat n m ns operated, a normally open second shunting circuit, said microswitch contactsr included in said second shunting circuit and operated responsive to the operation of said microswitch ,for completin said second shunting circuit to also disable said pulsing contacts, a restoring magnet normally included in said first shunting circuit, coin controlled contacts subsequently operated by said deposited first coin for opening saidfirst shunting circuit and for excluding said restoring magnet from said first shunting circuit; a polarized coin magnet, and third circu-itmeans including certain of-said operated coin controlled contacts, said restoring magnet-and said coin magnet, completed in case said-initiatedcall is abandoned for operati-ng said.restoringmagnetand said coin magnet; said-operation. of said restorin magnet recperstin 5. 36 en aging; means to release .said' acuetmem ans and rcstorezsaidlactuating means to normal, whereby said microswitch contacts of said coin magnet refunding said deposited coin and restoring said coin controlled contacts to normal, whereby said first shunting circuit is again completed and said third circuit is opened.

3. In combination, a telephone paystation circuit having a coin actuated mechanism associated therewith and wherein the normal current flowing through said circuit is reversed responsive to an established connection being answered, a telephone transmitter included in said circuit when a call is initiated from said paystation, a dial, impulse springs included in said circuit and operated by said dial subsequent to said circuit being completed when said call is initiated for transmitting switch controlling impulses representing a desired connection, a relay included in said circuit and inoperative responsive to normal current flow in said circuit when said call is initiated, circuit means effective to cause operation of said relay responsive to said reversal of normal current fiow in said circuit when said established connection is answered, a normally open first shunting circuit associated with said transmitter, coin controlled contacts operated responsive to the operation of said operated relay for completing said first shunting circuit to disable said transmitter from operation, a microswitch having contacts, actuating means associated with said microswitch and operated when a first coin of a certain denomination is deposited for operating said microswitch, engaging means also operated responsive to the operation of said actuating means for locking said actuating means operated, a normally open second shunting circuit also associated with said transmitter, said microswitch contacts included in said second shunting circuit and operated responsive to said operation of said microswitch for completing said second shunting circuit to also disable said transmitter from operation, said coin controlled contacts subsequently operated by said deposited first coin for removing said first shunting circuit from said transmitter, said actuating means reoperated responsive to the deposit of a second coin of said certain denomination, and means included in said engaging means operated responsive to said reoperation of said actuating means for reoperating said engaging means to unlock said actuating means, whereby said actuating means restores to normal and said microswitch is reoperated to open its contacts for removing said second shunting circuit from said transmitter and said transmitter is thereby conditioned for operation.

4. In a telephone paystation including the usual impulse sender and talking instrumentalities, a coin chute associated therewith having channels for receiving coins of different denominations, a first coin trigger and a second coin trigger, said first trigger associated with only one of said channels and operated responsive to the deposit of a first coin of a certain denomination in said one channel, means for locking said first trigger when first operated, means controlled by said first trigger for rendering said impulse sender inoperative, said first trigger reoperated by a second coin of said same certain denomination deposited in said one channel to unlock itself to again render said impulse sender operative, said second trigger operated by a first coin in any of said channels, and contacts con- 12 trolled by said second trigger for also controlling the effectiveness of said sender.

5. In a telephone paystation, a coin chute, a coin controlled mechanism mounted on said chute and including a microswitch, contacts associated with said microswitch for rendering said paystation ineffective, actuating means also associated with said microswitch and operated responsive to the deposit of a coin of a certain denomination in said coin chute for operating said microswitch to close said contacts, locking means controlled responsive to the operation of said actuating means for locking said actuating means in a locked position, whereby said closed contacts are maintained closed, and restoring means associated with said locking means and operated by said actuating means responsive to a second coin of the same denomination being deposited for reoperating said locking means to unlock said actuating means, said actuating means thereby reoperating said microswitch upon returning to normal for opening said contacts.

6. In a telephone paystation, a coin chute, a coin controlled mechanism mounted on said chute and including a microswitch, contacts associated with said microswitch for rendering said paystation ineffective, actuating means also associated with said microswitch and operated responsive to the deposit of a coin of a certain denomination in said coin chute for operating said microswitch to close said contacts, locking means controlled responsive to the operation of said actuating means for locking said actuating means in a locked position, whereby said closed contacts are maintained closed, and electro-magnetic release means controlled from a distant point for reoperating said locking means to unlock said actuating means, said actuating means thereby reoperating said microswitch upon rcturning to normal for opening said contacts.

7. In a telephone paystation, a coin chute, a coin controlled mechanism mounted on said chute, a pendulum included in said mechanism and having an elongated finger, coin controlled actuating means also included in said mechanism and operated responsive to the deposit of a coin of a certain denomination in said coin chute for operating said pendulum to slidably engage said finger with said actuating means during its said operation, a recess included in said finger and engaging said actuating means at a certain point in its said operation for locking said actuating means operated, a locking flange comprising another part of said pendulum, and a locking level momentarily operated in case of unnatural movement of said telephone paystation for momentarily engaging said locking flange, whereby said momentary engagement prevents the disengagement of said actuating means from said recess during said unnatural movement.

8. In a telephone paystation, a coin chute, a coin controlled mechanism mounted on said chute, a pendulum included in said mechanism and having an elongated finger, coin controlled actuating means included in said mechanism and operated responsive to the deposit of a coin of a certain denomination in said coin chute for operating said pendulum to slidably engage said finger with said actuating means during its operation, a recess included in said finger and engaging said actuating means at a certain point in its said operation for locking said actuating means operated, a release flange comprising an additional part of said pendulum, and electro-magnetic release means controlled from a distant point for engaging said release flange to reoperate said pendulum, said reoperation of said pendulum disengaging said recess from said actuating means for enabling said actuating means to restore to its unoperated position.

9. In a telephone paystation, a coin chute, a coin controlled mechanism mounted on said chute, a pendulum included in said mechanism and having an elongated finger, coin controlled actuating means also included in said mechanism and operated responsive to the deposit of a coin of a certain denomination in said coin chute for operating said pendulum to slidably engage said finger with said actuating means during its said operation, a recess included in" said finger and engaging said actuating meansat a certain point in its said operation for locking said actuating means operated, and a slanted side in said recess, said actuating means reoperated responsive to the deposit of a second coin of said certain denomination for engaging said slanted side of said recess, said engagement of said slanted side of said recess by said reoperated actuating means thereby reoperating said pendulum, said reoperation of said pendulum disengaging said recess from said actuating means for enabling said actuating means to restore to its unoperated position.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,066,392 Colling et al. Jan. 5, 1937 2,251,073 Shann July 29, 1941 2,327,154 Osborne Aug. 17, 1943 2,509,477 Carson et a1 May 30, 1950 2,555,486 Harris June 5, 1951

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