US2486722A - Automatic toll-ticketing telephone system - Google Patents

Description

Nov 1, 1949 R. F. STEHLIK 2,486,722

AUTOMATIC TOLL-TICKETING' TELEPHONE SYSTEM Filed June 12, 1959 19 Sheets-Sheet l llllllllll IIIIIIHI N VE N TOR PUD 0L PH FRANK 5 7' E HL lff Nov. 1, 1949 R. F. STEHLIK AUTOMATIQ TOLLQTICKETING TELEPHONE SYSTEM 19 Sheets-Sheet 2 Filed June 12 1949 R. F. STEHLIK AUTOMATIC TOLL-TICKETING TELEPHONESYSTEM l9 Shets-Sheet 4 a v L V1 v VT 7 ya r RUDOLPH FRANK STEHL/K c z M Filed June 12 1939 [II II Nov. 1, 1949 R. F. STEHLlK AUTOMATIC TOLL-TICKETING TELEPHONE SYSTEM Filed June 12, 1939 19 Sheets-Sheet s ATTORNE.

Nov. 1, I949 R. F. STEHLIK AUTOMATIC TOLL-TICKETTNG TELEPHONE SYSTEM Filed June 12, 1959 19 Sheets-Sheet 6 ATTORNfY Nov. 1, 1949 R. F. STEHLIK 2,436,722

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Patented Nov. 1, 1949 AUTOMATIC TOLL-TICKETIN G TELEPHONE SYSTEM Rudolph Frank Stehlik, Antwerp, Belgium, as-

signor, by mesne assignments, to Automatic Electric Laboratories, Inc., Chicago, 111., a corporation of Delaware Application June 12, 1939, Serial No. 278,601 In Great Britain June 21, 1938 39 Claims. I

The present invention relates to telephone systems and while it is more particularly concerned with systems having facilities for automatically recording particulars of a call, certain features of the invention have a broader aspect.

In connection with the automatic recording of particulars of a call it will be understood that there is certain essential information which must be recorded in order that the total cost of the call may be determined and debited to the correct subscriber. This essential information comprises the calling and called parties directory numbers, the charging rate or tariff for the connection and the duration of the connection. Other information may also be recorded but the above is the information usually necessary for accounting purposes.

The object of the invention is to provide apparatus and circuits, in an automatic telephone system, for determining the called partys numher, the tariff or rate of charge to be applied to a connection, the calling partys number, and the duration of the connection, and for controlling the transmission of this information to recorder apparatus in order to make a permanent record thereof.

According to one feature of the present invention, impulses transmitted by the calling party are arranged to effect the setting up of a connection and the operation of recording equipment either directly or indirectly by means of mechanical impulse repeaters and calling party identification is effected by transmitting to the recording equipment impulse trains corresponding to the calling partys number.

It will be understood that an important feature in arrangements of this nature is the provision of a register which will record the called partys number for those calls on which a record is to be made.

According to this feature of the invention, a mechanical impulse repeater is taken into use to respond to impulses transmitted by a calling party, the mechanical impulse repeater only being made effective to repeat impulses on calls which are to be recorded.

According to a further feature of the invention, a mechanical impulse repeater is automatically taken into use to receive impulses transmitted by the calling party certain of which impulses also effect the setting up of a connection and in accordance with the position taken up by a storage device which responds to certain of the impulses transmitted by the calling party,

the mechanical impulse repeater is adapted to be released or to retransmit all the impulses transmitted by the calling party.

According to another feature of the invention, a mechanical impulse repeater is adapted to be taken into use on the initiation of a call to receive impulses transmitted by a calling party and is adapted subsequently on a stage of the connection being reached at which recording is effected to repeat impulses, stored by it to impulse responding equipment taken into use at said stage to enable the called partys number to be recorded.

According to yet another feature of the invention, a mechanical impulse repeater is automatically taken into use to receive impulses transmitted by the calling party during the setting up of a connection and is adapted to retransmit impulses stored by it to impulse responding equipment by which the recording equipment is controlled.

According to still another feature of the invention, all the impulses transmitted by the calling party are adapted to control a mechanical impulse repeater while the initial impulses are arranged to control the setting up of a connection to a recording point independently of the mechanical impulse repeater and subsequently all the impulses stored by the mechanical impulse repeater are transmitted to the recording point for the purpose of recording the called partys number and controlling the further setting up of the connection after the said initial impulses have been received.

It is to be understood that by the expression mechanical impulse repeater is meant a registering and sending device in which the length of a train of outgoing impulses is determined by a mechanical marking corresponding to the received train rather than by an electrical marking as is more usual. An example of a device of this nature is found in British Patent No. 458,095.

The invention will be better understood from the following description of one embodiment taken in conjunction with the accompanying drawings in which Fig. 1 shows the trunking layout of the system,

Figs. 2-6 show the skeleton circuits of a known type of finder switch and also the detailed circuits of the equipment for determining the calling partys number. These figures should be arranged as shown in Fig. 20 to give the complete circuit.

Figs. 7-11 show the detailed circuits of the first.

group selector and the discriminating register which includes a mechanical impulse repeater.

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