GB721372A - Improvements in or relating to electric retractive switches - Google Patents

Improvements in or relating to electric retractive switches

Info

Publication number
GB721372A
GB721372A GB723152A GB723152A GB721372A GB 721372 A GB721372 A GB 721372A GB 723152 A GB723152 A GB 723152A GB 723152 A GB723152 A GB 723152A GB 721372 A GB721372 A GB 721372A
Authority
GB
United Kingdom
Prior art keywords
shaft
return movement
button
relating
electric
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
GB723152A
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.)
GEORGE HOLLINGS JENKINS
General Electric Co PLC
Original Assignee
GEORGE HOLLINGS JENKINS
General Electric Co PLC
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 GEORGE HOLLINGS JENKINS, General Electric Co PLC filed Critical GEORGE HOLLINGS JENKINS
Priority to GB723152A priority Critical patent/GB721372A/en
Publication of GB721372A publication Critical patent/GB721372A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/027—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms using electrical contacts, e.g. for actuating electro-acoustic device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Switches With Compound Operations (AREA)

Abstract

721,372. Press-button retractive switches. GENERAL ELECTRIC CO., Ltd., HARWOOD, A. E. J., and JENKINS, G. H. March 20, 1953 [March 20, 1952], No. 7231/52. Class 38 (5). A push button retractive switch of the kind in which the return movement of an operating member 12 associated with circuit controlling means-such as contacts 4, 6, 13-to a normal position is arranged to be frictionally, retarded after the push-button 2 has been released comprises an axially movable but non-rotatable operating shaft 12 carrying a contact disc 13 and a retarding element 17 arranged to be rotated by the screw like portion 15 of the operating shaft 12 during at least a part of the return movement of the shaft, the element 17 bearing against a felt friction disc 19 so as to retard the return movement of the shaft.
GB723152A 1952-03-20 1952-03-20 Improvements in or relating to electric retractive switches Expired GB721372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB723152A GB721372A (en) 1952-03-20 1952-03-20 Improvements in or relating to electric retractive switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB723152A GB721372A (en) 1952-03-20 1952-03-20 Improvements in or relating to electric retractive switches

Publications (1)

Publication Number Publication Date
GB721372A true GB721372A (en) 1955-01-05

Family

ID=9829152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB723152A Expired GB721372A (en) 1952-03-20 1952-03-20 Improvements in or relating to electric retractive switches

Country Status (1)

Country Link
GB (1) GB721372A (en)

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