Patent GB-485580-A (GB)
Title: Improvements in or relating to equipment for recording particulars regarding telephone or like calls
IPC: H04M15/38
Filed: 1936-11-20
Abstract: 485,580. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. (Kozma, L.) Nov. 20, 1936, No. 31807. [Class 40 (iv)] Automatic ticketing equipment comprises one or more mechanisms for recording information such as the identity of the calling and called sub-stations together with the tariff rate, associated with a larger number of mechanisms for recording duration and, if desired, the date and the time of commencement and termination of conversation although this information is as shown recorded by the identity recorder. The identity recording mechanisms are released for use in further calls after performing their functions. As described, a single identity recording mechanism is associated with a number of duration recording mechanisms. Circuit arrangements, Fig. 1. An idle printer having an idle duration recorder is connected to the trunk circuit over switch PRF, the printer being tested over bank B8, EPK, CS3, SS3 and the front contact of relay BR operated by ticket-controlled contacts SCC if a duration recorder is idle. Release control relay RR operates to battery in the trunk circuit. Switch TURF now hunts for the next idle duration recorder under control of a circular marking circuit T3, contact of cam DS3 or DS4 of sequence shaft DCS stepped once per ticket, independent source of potential comprising transformer T and rectifier CR, wire W7, bank of PRF and test relay TR. Impulses over W1 set the digit wheel and a clutching impulse over W3 operates magnet CM which clutches shaft MCS to shaft TUS clutched to the main driving shaft by magnet TSM operated by CM. The wanted number, tariff digits and calling number are printed substantially as described in Specification 472,434, the circuits being similar except that fewer contact controlling cams are required on shafts CS and SS. Shaft CS is now in position 22 and escapement magnet EM allows SS to go to position 2 in which the printing cam 13 is declutched from shaft MCS and date and hour cam 22 is clutched. Clutch magnet CM operates in a local circuit to print the date &c. (without the perforations used in the prior Specification), CS steps to position 23 and SS to position 3 in which the serial number printing cam 19 is clutched to MCS. Clutch magnet again operates, the serial number is printed, CS goes to position 24 and SS to 4 in which no recording cam is clutched. The clutch magnet CM is now operated up to position 30 of CS to feed out a ticket of normal length and when CS arrives at position 31, SS goes to position 5 in which paper severing cam 16 is clutched. Clutch magnet CM operates, the ticket is severed and CS goes to 34 in which SS goes to position 6 to clutch the ticket driving gear 31, CM being energized in position 34 to 36 of CS so that CS goes to position 1 and the revolutions of shaft MCS drive the ticket over deflector DF into the duration recorder. Shaft SS goes to position 1 and reconnects battery on contact of relay BR to the test circuit if a further idle duration recorder remains. When the ticket arrives in the duration recorder, it changes over the corresponding contacts SCC and magnet DSM operates the escapement of spring driven shaft DCS a cam DC on which moves deflector DF in front of the next idle recorder, DSM being operated over cams DS1, DS2 until an idle recorder is reached. If there is no idle recorder, the circuit of DSM is open at the contact of BR. The trunk circuit sends duration impulses over wiper T1 to the recording unit TUP and when conversation is finished, an impulse over wiper T2 operates magnet TUM which clutches to shaft TUS a series of cams for printing the record, restoring the recording unit and ejecting the ticket. Magnets TEG and TSM are operated, TSM clutching shaft TUS to the driving shaft and TEG clutching a ticket driving gear TCG to shaft TUS, TCG being maintained operated for some revolutions of shaft TUS by an off-normal contact of TCG. As soon as the ticket is ejected, however, clutch magnet TUM is released at springs SCC. Machine construction. The number printer is shown in Fig. 2a, and the five associated duration recorders in Fig. 2b. The main shaft MCS of the number printer is driven by clutch 27, operated by magnet CM, from the main driving shaft 59 driven by flexible gear wheel 62, controlled by magnet TSM, from gear 63 on the bay shaft. Shaft MCS carries a series of cams operating the number printing members and clutched to the shaft as required by cam discs 55 on sequence shaft SS which also carries contact controlling cams. The counting shaft CS also carrying contact cams 1-3 is housed within the shaft SS and is driven one step per revolution of MCS by ratchet wheel RW and pawl controlled by cam 26 on MCS. The shaft SS is driven by a spring in casing 48 and wound up by shaft CS, control of SS being by escapement 56, 57 operated by magnet EM. The printing members comprise digit wheel 12 and fixed-digit type 15 engaged by the paper by printing hammer 14 and cam 13, serial number wheels 21 and printing hammer controlled by cam 19, date and hour wheels 24, 25 and printing hammer controlled by cam 22. The fixed digit type 15 is moved aside, after printing, by linkwork 50.. 53 controlled by cam 49 on CS. The paper tape 137 is fed from drum 138 along a channel 139 by feed wheels driven by ratchet mechanism bv bar 5 and cam 4 and the ticket is cut off by member 17 reciprocated against blade 18 by cam 16. The severed ticket is taken over by roller 34 and deflecting plate DF to an idle channel 77 ... 81 of one of the duration recorders into which it is propelled by rollers 35 ... 39. The rollers are driven by skew gear from shaft 33 chain driven at 32 from main shaft MCS under control of clutch disc 55 on SS. The deflector DF is controlled by cam DC on shaft 117 escapement-controlled by magnet DSM, the circuit of an idle recorder being determined by contact cams DS1, 2 and ticket-controlled contacts SCC. After the duration recording wheel 89 has been set by impulses, the end of conversation signal operates magnet TUM which operates magnet TEC and main clutch magnet TSM. Magnet TUM causes shaft TUS to make one revolution so that a cam operates printing lever 88, a second cam 91 actuates a lever with a toothed segment to restore the recording wheel, and a third cam 94 operates lever 95 which opens the bottom of the ticket channel and ejects the ticket which falls on to a conveyer band 101 moved by roller 102 driven by gearing under control of clutch magnet TEC which together with main clutch magnet TSM is maintained energized for several revolutions of shaft 59 by an off-normal contact 114 controlled by gear-wheel 112. The ink ribbon 125 is carried from spool 126 along the ticket channel of the digit printer and thence past all the duration printing wheels, returning to spool 127, the ribbon being fed by ratchet mechanism driven by cams 2 on shaft MCS.