GB531693A - Improvements in impulse senders for use in telephone or like systems - Google Patents

Improvements in impulse senders for use in telephone or like systems

Info

Publication number
GB531693A
GB531693A GB19975/39A GB1997539A GB531693A GB 531693 A GB531693 A GB 531693A GB 19975/39 A GB19975/39 A GB 19975/39A GB 1997539 A GB1997539 A GB 1997539A GB 531693 A GB531693 A GB 531693A
Authority
GB
United Kingdom
Prior art keywords
dial
releasing lever
ratchet
setting
movement
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
GB19975/39A
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.)
Associated Electric Laboratories Inc
Original Assignee
Associated Electric Laboratories Inc
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
Priority to BE464784D priority Critical patent/BE464784A/xx
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Priority to GB19975/39A priority patent/GB531693A/en
Priority to US343399A priority patent/US2368104A/en
Publication of GB531693A publication Critical patent/GB531693A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

531,693. Impulse transmitters. MERCER, R., (Associated Electric Laboratories, Inc.). July 8, 1939, No. 19975. Drawings to Specification. [Class 40 (iv)] In a dial transmitter, successive operations of the finger-hold plate bring about a cumulative setting movement and a .further releasing operation by the user allows the transmission of the dialled digits as a single train of impulses. The dial mechanism associated with the fingerhold plate has no impulse-generating parts and transmits its successive setting movements by a pawl and ratchet coupling to a second dial mechanism whose return movement is normally prevented by a detent under the control of a releasing lever. An arm carried by the ratchet co-operates with a toothed cam to limit the cumulative setting movement to three complete revolutions. The setting pawl is withdrawn from the ratchet in the normal position of the finger-hold plate to allow the return movement of the second dial mechanism when the releasing lever is operated. The dial is particularly useful in a small telephone system employing 25-point switches, and in such a system the releasing lever is preferably controlled by the switch-hook. It is convenient also in systems in which power is derived from a magneto generator, which can readily be operated at the same time as the releasing lever.
GB19975/39A 1939-07-08 1939-07-08 Improvements in impulse senders for use in telephone or like systems Expired GB531693A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE464784D BE464784A (en) 1939-07-08
GB19975/39A GB531693A (en) 1939-07-08 1939-07-08 Improvements in impulse senders for use in telephone or like systems
US343399A US2368104A (en) 1939-07-08 1940-07-01 Impulse sender for use in telephone or like systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19975/39A GB531693A (en) 1939-07-08 1939-07-08 Improvements in impulse senders for use in telephone or like systems

Publications (1)

Publication Number Publication Date
GB531693A true GB531693A (en) 1941-01-09

Family

ID=10138229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19975/39A Expired GB531693A (en) 1939-07-08 1939-07-08 Improvements in impulse senders for use in telephone or like systems

Country Status (3)

Country Link
US (1) US2368104A (en)
BE (1) BE464784A (en)
GB (1) GB531693A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759429A (en) * 1951-06-11 1956-08-21 Phillips Petroleum Co Valve control for gas lift
US3046355A (en) * 1957-12-30 1962-07-24 Bell Telephone Labor Inc Impulse transmitting mechanism
US3104286A (en) * 1960-07-15 1963-09-17 Mc Graw Edison Co Mechanical telephone dialing instrument

Also Published As

Publication number Publication date
US2368104A (en) 1945-01-30
BE464784A (en)

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