Patent GB-795256-A (GB)
Title: Device operable by electrical pulses for impressing conventional signs (figures, letters and the like)
IPC: G06M3/06
Filed: 1955-08-04
Abstract: 795,256. Sound record apparatus. TYSZKIEWICZ, S. Aug. 4, 1955 [Aug. 7, 1954], No. 22490/55. Class 40 (2). In a magnetic or other tape or wire recording apparatus provided with counter means to indicate visually on a carrier the length of individual recordings, additional counter means are provided to indicate on said carrier coded characters representing additional information relating to the recordings. During a recording operation a counter comprising dials 11, 12, 13 registers a numerical quantity related to the amount of record material which has passed. At the end of the recording the reading of the counter is impressed on a paper tape 27 by means of a hammer 26 and an inking ribbon 28. The hammer 26 is released by the action of a relay which is automatically brought into operation when a counter disc 16 is rotated by an impulse motor 21 operated by impulses from a telephone dial K, Fig. 6. Each operation of dial K advances tape 27 by one step and causes a number to be printed along the tape 27, as shown at 30, 31, 32, conveying information relating to the recording, such as the identity of the person making the recording. The initial operation of the dial K also causes the counter discs 11, 12, 13 to be reset to zero, by means not shown. A description is given with reference to Fig. 6 indicating the relay circuits which are brought into operation by dial K and which control the switching of recording apparatus, the rotation of counter disc 16, and the operation of hammer 26. As an example, when numeral 3 is dialled on dial K, the three pulses produced in relay R1 cause a similar number of pulses in the winding P.S.1 of the motor P.S. which moves switch arms 40, 41, 42 to position 3. Simultaneously, the winding P.S.2 of impulse motor 21 moves numeral 3 of disc 16 under the hammer 26. An instant later relay RO closes CO connecting -B to winding LP of relay to oscillate hammer 26 to print across tape 27 the numerals indicated by discs 11, 12, 13, 16. Closure of CO also energizes relay RN which after a short delay closes cn thereby energizing relay RM which closes and opens am thereby transmitting impulses to windings P.S.1 and P.S.2 which act to restore arms 40, 41, 42 to their inoperative position and disc 16 to position O. The above process can be repeated by further dialling of the numerals 1 to 9. In order to prepare for dictation figure 0 is dialled which generates 10 successive pulses which cause arms 40, 41, 42 to reach position O. After the inherent delay of relay RO, ao opens and bo closes thereby reversing the polarity on arms 41, 42. This closes the circuit of coil LT of relay RT which closes at to supply positive voltage to relay RZ. Contacts az are thereby opened to disengage relay RX which occurs with a certain delay and causes bx to open to break the supply current to RU the action of which is also delayed. In the meantime closure of co of relay RO closes relay RN and relay to operate the hammer 26. Relay RN then closes cn to energize relay RM which moves arms 40, 41, 42 to their inoperative position and causes winding P.S.2 to set disc 16 to zero. At the end of these steps only relay RU is definitely de-energized and an and bu open, disconnecting the positive voltage from P.S.2 and winding LP respectively. Also cu and du supply positive voltage to relay RS which automatically releases the line and connects arm 42 to the bank of contacts 47, to restore the circuit to the inoperative position shown in Fig. 6. Specifications 657,627, 657,628 and 763,724 are referred to.