GB726871A - Improvements in electric time-switches for signalling circuits - Google Patents

Improvements in electric time-switches for signalling circuits

Info

Publication number
GB726871A
GB726871A GB17072/53A GB1707253A GB726871A GB 726871 A GB726871 A GB 726871A GB 17072/53 A GB17072/53 A GB 17072/53A GB 1707253 A GB1707253 A GB 1707253A GB 726871 A GB726871 A GB 726871A
Authority
GB
United Kingdom
Prior art keywords
strip
lever
circuit
june
connection
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
GB17072/53A
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
Publication of GB726871A publication Critical patent/GB726871A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/30—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action
    • H01H43/301—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material
    • H01H43/302—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material of solid bodies
    • H01H43/304—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action based on the expansion or contraction of a material of solid bodies of two bodies expanding or contracting in a different manner, e.g. bimetallic elements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

726,871. Switching systems. VERNHES, J. M. June 19, 1953 [June 1, 1953], No. 17072/53. Class 38 (4). [Also in Group XXXVII] A time switch for controlling vehicle signalling circuits comprises a manually-operable contact lever 16 pivoted at 13 and movable into engagement with a bimetal strip 1 so as to complete a circuit through the lever 16, the strip 1, a connection 10 and the supply S. At the same time, the strip 1 is deflected by the lever 16 to close contacts 5, 8 on spring strips 4, 7 so as to close the circuit of a lamp 6. Completion of the circuit through strip 1 causes it to be heated and be further deflected so as to release the lever 16 which has been latched by the strip. The heating circuit is thus broken and the strip 1 cools down and returns to its original position, allowing contacts 5, 8 to open. The duration of closure is determined by a stop 9. Connection 10 may include a current limiting resistance R and strip 4 may be bimetallic so as to compensate for ambient temperature variations. Specification 649,884 is referred to.
GB17072/53A 1953-06-01 1953-06-19 Improvements in electric time-switches for signalling circuits Expired GB726871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1084232T 1953-06-01

Publications (1)

Publication Number Publication Date
GB726871A true GB726871A (en) 1955-03-23

Family

ID=9611524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17072/53A Expired GB726871A (en) 1953-06-01 1953-06-19 Improvements in electric time-switches for signalling circuits

Country Status (3)

Country Link
US (1) US2757257A (en)
FR (1) FR1084232A (en)
GB (1) GB726871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078022B (en) * 1958-10-01 1960-03-17 Hans Joachim Tappert Flashing device, in particular for securing stopping motor vehicles

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR959598A (en) * 1948-01-14 1950-03-31
US2504728A (en) * 1948-04-10 1950-04-18 Sunbeam Corp Automatic coffee maker
BE496579A (en) * 1949-07-06
BE496580A (en) * 1949-07-29
US2599473A (en) * 1949-10-25 1952-06-03 Miller Edwin August Thermal relay
US2635156A (en) * 1951-01-19 1953-04-14 Welter Otto Thermal circuit breaker
US2696159A (en) * 1952-07-24 1954-12-07 Gen Electric Coffee maker and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078022B (en) * 1958-10-01 1960-03-17 Hans Joachim Tappert Flashing device, in particular for securing stopping motor vehicles

Also Published As

Publication number Publication date
FR1084232A (en) 1955-01-18
US2757257A (en) 1956-07-31

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