US2043201A - Telephone toll apparatus - Google Patents

Description

June 2, 1936. G. A. LONG TELEPHONE TOLL APPARATUS Filed May 15, 1955 nun "H" Patented June 2, 1936 UNITEDIIS'IIATES P TENT OFFi E n 2,043,201 I W TELEPHONE 'roLL' APPARATUS George A. Long, Hartford,

Gray Telephone Pay Station Company,

Comm, assig'nor to The Hartford, Conn, a corporation of Connecticut Application May 13, 1933, SerialNo. 670,928 3 Claims; (01. 179 63) My invention relates to the 'class of devices above named, and an object of my invention,

among others, is the production of means in a telephone of the so-called French or-,monophone type whereby maximum results may be Figure 1 is a front'view'of a telephonefapw paratus embodying my invention. l

Figure 2 isa side view of the same with parts I broken away to show construction.

Figure 3 is a rear view of the front case illustrating a portion of the mechanisrnjfor depositing of coins.

Figure 4 is a diagrammatic view illustrating the wiring embodied in my improved telephonetollv apparatus. 1 I n U I The great popularity of the so-called French or monophone type of telephone which exists at the present time hasv created a demand for use of this type of telephone in connection with telephone toll collecting apparatus, and, moreover, this type of telephone is found to possess distinct advantages over that type in which the transmitter is placed in a fixed position, as the monophone type may be conveniently used in any desired poeition by the person speaking, thereby enabling such person to assume an easy and natural posture during conversation and not requiring him to assume a strained, unnatural and tiresome position in a manner frequently compelled by telephones having the fixed form of transmitter.

In the pay station apparatus which is being displaced by this later type of telephone the transmitter on the front of the case serves the dual purpose of picking up the voice vibrations from the air and the coin actuated signals through the direct resonant connectionsin the steel cover or case with the transmitter circuit which enables the operator at the central oflice to aurally determine whether the required toll for the use of the apparatus has been deposited, through the use of a single transmitter as above described. With this so-called French" type of telephone the transmitter being embodied in the hand set which is removed from the telephone case when'in use is not indirect resonant connection with the sound signals, and these signals have insufficient volume to be picked up by air vibrations. I have therefore made use of a second transmitter to pick up the sound signals, preferably through a resonant connection with the belland gong, and have devised means whereby the signals created by the coin may be transmitted over the'talking circuit.

Such apparatus embodying my improvement is illustrated in the drawing herein in which; the numeral 5 denotes the, back ofta coin controlled telephone set, Gthe upper portion of the enclosing case, 'l.the lowerportion of such case, 8 a coin gage plate to receive and direct coins toa channel plate I4. A dial 9. is supported on the upper section of the case and a supporting hook in projects from the side ofsaid case to receive'a'hand set ll. A'coin return opening I2 is formed in thelower portion of the case, all of the parts just described being commonto telephone toll collect-' ingapparatus now in general-use. This apparatus also includes a coin receptacle I3 in'the'form of a drawer removably secured in the lower section I of the case and into which coins or other tokens paid forthe use of the instrument pass from the coin gage-plate 8 through the channel plate It having channels ii for guiding coins of different denominations against signals, as a belll6 and a gong I! in a manner that will be readily understoodby those skilled in the art and for, which reason a moredetailed description and illustration are omitted herein. a

In the adaptation of my invention I place in resonant connection withthe sound, signal devices, as the ball "5 and gong IT, a coin signal pick-up transmitter I8. This may be arranged in various ways, one of many contemplated by me being to place this transmitter l8 within the case,

which is constructed of metaLthe sounding signals also being secured in firm contact with said case, thereby establishing .a resonant connection between said signals and the transmitter.

The sound of the signals picked up by this transmitter may be conveyed to the central station operator in various ways. In the device illustrated herein and which satisfactorily accomplishes my purpose I connect the transmitter IS in series with the monophone transmitter, and by a wire l9 which is connected on opposite sides of the transmitter and as shown in Fig. 4. of the drawing. 'I'his introduces a resistance into the line, and if this shall be found objectionable I may make use of a shunted resistor 20, thereby reducing theline resistance for voice transmissionif desired and also reducing the sensitivity of' such transmitter to extraneous noises. The resistor has a capacity of substantially seventyiive ohms which satisfactorily answers my purpose.

While this reduces the strength oi! the sound signals, the resonant connection of the signals with the transmitter is so efiective that the audibility oi the signals to the operator is clear.

In the wiring diagram illustrated in Fig. 4 much is shown that does not require detailed description, as it will be readily understood by those skilled in the art. Briefly set out the numeral 22 denotes a receiver switch, 23 a ringer, 24 a condenser, 25 a polarized coin relay, 26 a ground switch closed by the action of coins, and 21 a calling device oi the dial type, all 01' which are common to telephone apparatus now in general use.

In the operation of the telephone pay station herein described the circuit functions in theusual manner for incoming calls except that the coin signal pick-up transmitter and its resistor are connected in series with the monophone transmitter.

For local calls the subscriber lifts the monophone from the hook but he does not hear the dial tone and cannot dial without depositing a coin. When a coin is deposited it closes the ground switch 26 which connects one side of the line to the ground in series with the polarized coin relay 25. This efl'ects a ground relay to operate at the central omce and it also unlocks the pay station trunk fordialing. The subscriber may now dial his party in the usual manner. One pair of the oil-normal springs in the calling dial 21 breaks the receiver circuit and the other pair of said springs shunts both the monophone transmitter and the coin signal pick-up transmitter so thatthere is a clear path of no resistance for the dial impulses. proceed in the usual manner except that the coin signal pick-up transmitter and its shunting re-' sistorare in series with the monophone transmitter.

For toll calls the subscriber calls the operator as before for a local call and the operator requests the deposit oi the charge, the deposited coin striking gongs or bells according to their Conversation can to the polarizedcoin relay 25 to the ground. If 10 the call is not completed the operator refunds the charge by pressing a key which applies a high voltage of opposite polarity through said polar- .ized relay to the ground.

I claim: 15

1. The combination in a telephone including a transmitter for voice transmission, a plurality of sound signals for denoting payment tor use of the telephone, and a single base of resonant material upon which all of said signals are mounted, 20 of a second transmitter mounted on said single base separate and apart from said signals with the single second named transmitter in resonant connection with all of said sound signals to transmit the sounds thereoi.

2. The combination in a telephone including a transmitter for voice transmission and sound signals for denoting payment for use of the telephone, of a second transmitter in resonant connection with all of said sound signals and a cir- 30 cuit for conveying said sound and voice signals, said circuit including a shunt resistor around said second transmitter.

3. The combination in a telephone including sound signals for denoting payment for use of the telephone, a single metallic element for the support of the signals, of a transmitter for voice transmission in non-resonant connection with said sound signals, and a second transmitter mounted separate and apart from said signals and upon the metallic element and in resonant connection with the signals for transmission of the sounds thereof.

- GEORGE A. LONG.

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