GB549193A - Improvements in and relating to time switches - Google Patents

Improvements in and relating to time switches

Info

Publication number
GB549193A
GB549193A GB804/42A GB80442A GB549193A GB 549193 A GB549193 A GB 549193A GB 804/42 A GB804/42 A GB 804/42A GB 80442 A GB80442 A GB 80442A GB 549193 A GB549193 A GB 549193A
Authority
GB
United Kingdom
Prior art keywords
shaft
spring
pointer
discs
jan
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
GB804/42A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB549193A publication Critical patent/GB549193A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04CELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C23/00Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
    • G04C23/14Mechanisms continuously running to relate the operation(s) to the time of day
    • G04C23/16Mechanisms continuously running to relate the operation(s) to the time of day acting only at one preselected time or during one adjustable time interval

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Electric Clocks (AREA)

Abstract

549,193. Time switches. BRITISH THOMSONHOUSTON CO., Ltd. Jan. 20, 1942, No. 804. Convention date, Jan. 21, 1941. [Class 38 (v)] In a time switch, an " hour " shaft 27, encircling a " minute " shaft 22, bears an operating member 42 splined on it by the engagement of a spring 41 in a groove 43. The end of the spring forms a catch which engages the inner rim of a disc 35 which can be set to any radial position, indicated by a pointer 14. A further disc 34 can be set by a pointer 15. Each of these discs has a slot 39, 40 in one position and as the discs are rotated by the "hour" shaft, the slots permit the catch 41, and hence the operating member, to snap along the splined shaft under the influence of spring 46, through the collars 35, 34 in turn, the first movement closing contacts 45, 47, the second opening them again. The movement may be reset by means of a lever 19.
GB804/42A 1941-01-21 1942-01-20 Improvements in and relating to time switches Expired GB549193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US549193XA 1941-01-21 1941-01-21

Publications (1)

Publication Number Publication Date
GB549193A true GB549193A (en) 1942-11-10

Family

ID=21994378

Family Applications (1)

Application Number Title Priority Date Filing Date
GB804/42A Expired GB549193A (en) 1941-01-21 1942-01-20 Improvements in and relating to time switches

Country Status (1)

Country Link
GB (1) GB549193A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824181A (en) * 1953-11-12 1958-02-18 Int Register Co Automatic and manual control time switch
DE1125516B (en) * 1958-05-16 1962-03-15 Franz Morat K G Elektro Feinme Time switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824181A (en) * 1953-11-12 1958-02-18 Int Register Co Automatic and manual control time switch
DE1125516B (en) * 1958-05-16 1962-03-15 Franz Morat K G Elektro Feinme Time switch

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