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March 23, 1954 C. E. LOMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Filed July 29, 1950 5 Sheets-Sheet Li

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March 23, 1954 C. E. LOMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Filed July 29, 1950 5 Sheets-Sheet Li March 23, 1954 C. E. LOMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Filed July 29, 1950 5 Sheets-Sheet li CD - 25 sSC O ...) <5.3. INVENTOR. CLARENCE E. LOMAX ATTORNEY March 23, 1954 C. E. LOMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Filed July 29, 1950 5. Sheets-Sheet 2 INVENTOR. CLARENCE E. LOMAX ATTORNEY March 23, 1954 C. E. LOMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Filed July 29, 1950 5 Sheets-Sheet 3 INVENTOR CLARENCE E. LOMAX ATTORNEY March 23, 1954 C. E. LOMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Filed July 29, 1950 5. Sheets-Sheet 4 ON N.- N.N N.NO VN. N.O N.(O. N. ON OOr OO n MO MO MO ) R 35 r) 8N 9. 8g 9 CN v noO. 9 | O ol, 3 - 3...? 5 ? men on a- - mo am or a - - - - -- a - - - O N) : -- S. - a w ---W. - -- -u- --an - s i S.P-- - OX a iCs i.s ---- INVENTOR. CLARENCE E. LOMAX 242.2% ATTORNEY March 23, 1954 C. E. OMAX 2,673,243 TELEPHONE COIN COLLECTION SYSTEM INVENTOR. CLARENCE E. LOMAX ATTORNEY Patented Mar. 23, 1954 2,673,243 UNITED STATES PATENT OFFICE 2,673,243 TELEPHONE COIN COLLECTION SYSTEM Clarence E. Lomax, Chicago, Ill., assignor to Ill.,Automatic a corporation Electric of Laboratories,Delaware Inc., Chicago, Application July 29, 1950, Serial No. 16,756 6 Claims, (C1, 179-6.3) This invention relates in general to automatic 2 telephone systems and, more particularly, to hopper are also modified so that dimes and quar means for controlling the coin mechanism where ters will be guided to one channel of the hopper in it is required that coins of a certain denomina While nickels only will be directed to the other. tion only can initiate a call. The coin trigger that controls the operation of the The main object of the present invention is the 5 coin Springs protrudes into one of these chan provision of a new and novel paystation circuit nels-the one passing dimes and quarters. There arrangement wherein a party operating the dial fore, only dimes or quarters can trip the coin subsequent to the depositing of a non-initiating Springs and initiate a call. It should be under denomination coin will cause that particular coin stood that any mechanical arrangement that pro to be refunded. O duces this same result could be used in combina It is another object of the invention to provide, tion with this circuit arrangement. The inventor in such an automatic telephone System, improved does not wish to be limited merely thereto. and simplified apparatus wherein refund poten The line finders indicated in Fig. 1 and Fig. 3 tial is automatically transmitted responsive to the may be of the well known Strowger type as shown answering of the operator only when the call orig in U. S. patent to Saunders No. 1,849,694, granted inates from a payStation. March 15, 1932. The line circuits indicated may It is another object of the invention to provide also be of the type as shown in the above-men improved and exceedingly simple paystation cir tioned patent. The neon tube shown in Fig. 1 cuit apparatus wherein a more positive indication : has the Well-known characteristic of being non of the success or failure of manual operation of conductive until a predetermined voltage is im the coin magnets is afforded the operator. pressed across the terminals thereof. Following These and other objects are accomplished a,c- ionization of the gas contained therein the volt cording to the invention, by the arrangement and age required to maintain the tube conductive is combination of elements set forth in the following substantially less than that required for initiating description, defined in the appended claims and 2. 5 ionization. Also, the resistance of the device is illustratively exemplified in the accompanying Substantially lessened after the device is rendered drawings, in which: conductive. This neon tube is so arranged in the Fig. 1 shows an automatic substation of the circuit that it will form a path for refunding volt payStation type, an associated line circuit and a age and still bar the line from ground through the succeeding line finder. 30 coin magnets when the coin springs are not Fig. 2 shows a portion of the paystation re tripped. peater associated with the line finder. It should be understood that any suitable dis Fig. 3 shows the remainder of the paystation charge device could be used in lieu of a neon tube. repeater circuit associated with its succeeding se- : The inventor does not wish to be limited merely lector. A regular subscriber and a switch train 3 5 thereto. is illustrated in the upper right section. The selectors indicated in Fig. 3 may be of the Fig. 4. ShoWS a portion of the combined line and Well known Strowger type similar to the selector shown in U. S. Patent No. 1,956,374, granted CLRrecording trunk). trunk circuit (hereinafter referred to as April 24, 1934. - Fig. 5 shows the remainder of the CLR, trunk In order to explain the operation of the cir and the operator's cord and coin control circuits. cuits, it will first be assumed that a party wishes Figs. 1-5 are assembled from left to right in to extend a call from the automatic payStation A Order. to a subscriber in a distant exchange, not shown, In the preferred form of this invention the air and the party attempts to do so by depositing a rangement is such that a dime or a quarter must nickel in the coin collecting mechanism at the be deposited before a call may be initiated. The paystation. The nickel would descend through coin collect-refund mechanism shown in Fig. 1 the modified coin race emerging and entering the may be of the well known type as illustrated in hopper at the top of channel 6. The coin would U. S. patent to George A. Long, No. 1,886,409, then proceed unobstructed to arresting device ), granted November 8, 1932, with a slight modifica 50 whereupon it is retained. It will be seen from the tion of the hopper. The hopper is enlarged and diagram of the coin hopper mechanism in Fig. 1 so constructed that two distinct and separate that coins traversing channel S will completely channels are provided to pass the coins to the circumvent coin trigger A. Thus, the depositing arresting device. The coin 'races leading to the of a nickel will cause no action whatsoever. The resultis the same as if no coin had been deposited. 2,673,243 4. 3 back and closing contact 213 operates hold relay It will now be assumed that following the 25, traced over the following path: ground, con depositing of said nickel the receiver is removed. tact 68b, conductor 9, contact 23, contact A loop circuit is formed through paystation A, 233, through hold relay 250 to battery. Release traced over the following path: line -L, diai 5 relay 239, being of the slow-to-release type Will pulsing contact , hook-switch contact 8, induc retain contact 233 closed during the time its tion coil Winding , talking transmitter 2, coil energizing circuit is momentarily opened at Con tone transmitter 3 and resistor 4 in parallel, tact 22 due to pulsing. Hold relay 25, by clos to line --L. The line relay in the indicated line ing contact 25 places resistor 267 across coin circuit will energize over this loop circuit in denser 266, reason therefor hereinafter explained. Well-known manner and a line finder will subse ..) Hold relay 25C also, by closing contact 252, causes quently initiate a search for calling payStation relay 30 to operate, traced over the following line A, also in well known manner. The line path: ground, contact 252, contact 209, conductor findel' being of the pre-seizing type, will close a . 83, contact 57, through relay 3 to battery. loop within itself to the associated succeeding Relay 39, once operated, places ground on con repeater before the calling line is actually found. tacts 3 and 32 to energize relays and (, Once it is found the loop, of course, extends back respectively. Relay 40, in closing contacts iá2 to the payStation. Line relay. 20 will then ener and 44 prepares a path for the refunding po gize, traced over the following path: ground, im tential. Other functions of relay f () will subse pedance resistor 26, lower winding of differen quently be described. Relay if, by closing con tial relay 22, repeating coil winding 262, con 20 tact 4 completes the path and applies refund ductor f3, contact 64, contact 43, line. --L, ing potential back to the substation line, traced loop circuit hereinbefore explained, line-I, con over the following path: negative 110 volt re tact is, contact 6 , conductor f7, repeating funding potential, lamp Ll, contacts 9, 4, 42, coil Winding 23, upper winding of differential conductor -L, line finder wiper -, line finder relay 228, through line relay 20 to battery. As bank contact - to substation line -L. At this is well known in the art, differential relay 22 point, namely, during pulsing, the remaining cir Will not operate when its two windings are ener cuit, from line-L, over dial off-normal contact gized simultaneously. Line relay 2f ), in closing 9, neon tube , through coin magnets 2 to ground contact 2 2, completes a path to operate re will be open at dial off-normal contact 3. Re lease relay 23 (, traced over the following patin: fund voltage, however, will be applied after as ground, contact 68b, conductor 79, contact, 2.2, Well as during the pulsing period as will be Sub through release relay 230 to battery.
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