GB123494A - A Switch for Closing an Electric Circuit for a Certain Period. - Google Patents

A Switch for Closing an Electric Circuit for a Certain Period.

Info

Publication number
GB123494A
GB123494A GB1522818A GB1522818A GB123494A GB 123494 A GB123494 A GB 123494A GB 1522818 A GB1522818 A GB 1522818A GB 1522818 A GB1522818 A GB 1522818A GB 123494 A GB123494 A GB 123494A
Authority
GB
United Kingdom
Prior art keywords
contacts
relay
circuit
heating
thermal
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
GB1522818A
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.)
MEKANO AS
Original Assignee
MEKANO AS
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 MEKANO AS filed Critical MEKANO AS
Priority to GB1522818A priority Critical patent/GB123494A/en
Priority claimed from US260348A external-priority patent/US1348746A/en
Publication of GB123494A publication Critical patent/GB123494A/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
    • H01H43/303—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 one single solid body, e.g. hot wire

Landscapes

  • Control Of Resistance Heating (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

123,494. Aktieselskab et Mekano, and Schepeler, H. A. Sept. 19, 1918. Thermal switches; sparking, preventing.-A short-time thermal switching-device particularly fur staircase lighting comprises a relay 14, which is energized in series with the heating-element 5 when one of the staircase press-buttons 3 is pressed momentarily, and immediately closes at the contacts 16, 18 the main circuit for the lamps and at 17, 19 a maintaining-circuit for the relay and the heating-element independent of the buttons. When the thermal element 6, in close proximity to the heating-element 5, has expanded sufficiently, it closes at the contacts 10, 12 a circuit for the lamps independent of the relay contacts, and, with further expansion, the relay winding is short-circuited by the engagement of the contacts 9, 11, whereupon the relay contacts are separated and the heating-element de-energized. A circuit for the lamps still remains through the contacts 10, 12, and this circuit is broken, finally, when the thermal element has had time to contract sufficiently. In order to reduce the sparking at the contacts 10, 12, contact 12 carries a horse-shoe magnet which, in conjunction with magnetic material on the base on which the movable contact member 8 is mounted, produces a blow-out flux between the contacts.
GB1522818A 1918-09-19 1918-09-19 A Switch for Closing an Electric Circuit for a Certain Period. Expired GB123494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1522818A GB123494A (en) 1918-09-19 1918-09-19 A Switch for Closing an Electric Circuit for a Certain Period.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1522818A GB123494A (en) 1918-09-19 1918-09-19 A Switch for Closing an Electric Circuit for a Certain Period.
US260348A US1348746A (en) 1918-10-30 1918-10-30 Switch for the closing of an electric circuit for a certain period

Publications (1)

Publication Number Publication Date
GB123494A true GB123494A (en) 1919-02-27

Family

ID=32395949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1522818A Expired GB123494A (en) 1918-09-19 1918-09-19 A Switch for Closing an Electric Circuit for a Certain Period.

Country Status (1)

Country Link
GB (1) GB123494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299251A (en) * 1964-06-10 1967-01-17 Weldotron Corp Temperature control means for electrically heated impulse sealing elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299251A (en) * 1964-06-10 1967-01-17 Weldotron Corp Temperature control means for electrically heated impulse sealing elements

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