GB663008A - Improvements in or relating to clockwork electric time switches - Google Patents

Improvements in or relating to clockwork electric time switches

Info

Publication number
GB663008A
GB663008A GB1775649A GB1775649A GB663008A GB 663008 A GB663008 A GB 663008A GB 1775649 A GB1775649 A GB 1775649A GB 1775649 A GB1775649 A GB 1775649A GB 663008 A GB663008 A GB 663008A
Authority
GB
United Kingdom
Prior art keywords
cam
lever
gear train
clockwork
pawl
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
GB1775649A
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 GB1775649A priority Critical patent/GB663008A/en
Publication of GB663008A publication Critical patent/GB663008A/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

663,008. Retractive switches. MIDGLEY, A. M. July 5, 1950. [July 5, 1949] No. 17756/ 49. Class 38 (v). A switch, suitable for controlling vehicle direction indicators, comprises spring arms 13, 14, carrying contacts 16 co-operating with fixed contacts 17 and selectively operable by a cam 12 having steps cooperating with steps 20, 21 on the spring arms to cause the centres of the arms to be further distorted after contact engagement so as to increase the contact pressure, the return of the cam being delayed by a clockwork mechanism. Rotation of a knob 1 in either direction causes a cam 3 to tilt a lever 4 connected by a pin-and-slot 5, 6, to a lever 7 carrying a pawl 9 which rides over the teeth of one wheel 8 of a gear train. On release of the knob, a spring 10 returns the lever 4 and the pawl 9 engages and rotates the wheel 8 and the gear train, thereby delaying the return of the cam to normal. An interrupter 22, 23 is operated by the gear train as in Specification 645,595.
GB1775649A 1949-07-05 1949-07-05 Improvements in or relating to clockwork electric time switches Expired GB663008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1775649A GB663008A (en) 1949-07-05 1949-07-05 Improvements in or relating to clockwork electric time switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1775649A GB663008A (en) 1949-07-05 1949-07-05 Improvements in or relating to clockwork electric time switches

Publications (1)

Publication Number Publication Date
GB663008A true GB663008A (en) 1951-12-12

Family

ID=10100668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1775649A Expired GB663008A (en) 1949-07-05 1949-07-05 Improvements in or relating to clockwork electric time switches

Country Status (1)

Country Link
GB (1) GB663008A (en)

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