GB763724A - Improvements in or relating to electrical control mechanism - Google Patents

Improvements in or relating to electrical control mechanism

Info

Publication number
GB763724A
GB763724A GB1124952A GB1124952A GB763724A GB 763724 A GB763724 A GB 763724A GB 1124952 A GB1124952 A GB 1124952A GB 1124952 A GB1124952 A GB 1124952A GB 763724 A GB763724 A GB 763724A
Authority
GB
United Kingdom
Prior art keywords
switch
relay
recording
relays
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1124952A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1124952A priority Critical patent/GB763724A/en
Publication of GB763724A publication Critical patent/GB763724A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus

Landscapes

  • Relay Circuits (AREA)

Abstract

763,724. Electric selective signalling systems. TYSZKIEWICZ, S. E. May 1, 1953 [May 3, 1952], No. 11249/52. Class 40 (1). [Also in Group XXXIX] The invention relates to control equipment for a magnetic recording system in which impulses set a switch having control relays connected to its banks, the control relays locking up on operation, whereupon the switch is homed. As shown, a telephone set is equipped with a non-standard dial in which its impulse contacts D are normally open, but close on the forward motion of the dial and then open on commencement of the return motion during which they close intermittently for a number of times corresponding to the digit dialled and finally remain open. Impulse relay IR in the recording station operates to the first closing of the dial contacts and slow-release relays A and B follow. Subsequent operations of the impulse relay set the switch PS and upon the last release of IR, relay A releases to cause the operation of one of a set of control relays C connected to the corresponding terminal of switch-bank PS2. Relay C locks up and when B falls back, the switch PS homes. Relay C remains locked up, until a further train of pulses operates A. The various C relays control different functions of the recording equipment, e.g. recording, stopping the recording, marking the recording medium at the end of a letter or paragraph and playing back. Specification 657,627 is referred to in the Provisional Specification.
GB1124952A 1952-05-03 1952-05-03 Improvements in or relating to electrical control mechanism Expired GB763724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1124952A GB763724A (en) 1952-05-03 1952-05-03 Improvements in or relating to electrical control mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1124952A GB763724A (en) 1952-05-03 1952-05-03 Improvements in or relating to electrical control mechanism

Publications (1)

Publication Number Publication Date
GB763724A true GB763724A (en) 1956-12-19

Family

ID=9982755

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1124952A Expired GB763724A (en) 1952-05-03 1952-05-03 Improvements in or relating to electrical control mechanism

Country Status (1)

Country Link
GB (1) GB763724A (en)

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