GB418810A - Improvements in thermally-controlled electric short-time switches - Google Patents

Improvements in thermally-controlled electric short-time switches

Info

Publication number
GB418810A
GB418810A GB1613734A GB1613734A GB418810A GB 418810 A GB418810 A GB 418810A GB 1613734 A GB1613734 A GB 1613734A GB 1613734 A GB1613734 A GB 1613734A GB 418810 A GB418810 A GB 418810A
Authority
GB
United Kingdom
Prior art keywords
strip
contacts
latch
heating
lever
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
GB1613734A
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 GB1613734A priority Critical patent/GB418810A/en
Publication of GB418810A publication Critical patent/GB418810A/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

Landscapes

  • Manufacture Of Switches (AREA)

Abstract

418,810. Thermal switches. WOLF, 0., 47, Antwerpenerstrasse, Berlin. May 30, 1934, No. 16137. [Class 38 (v).] A thermally operated short time switch comprises a contact 15 which is moved into engagement with a fixed contact 17 by the bending of a bimetallic strip 4, held in position by a latch 23, and after a short time interval released by the return movement of the strip. The strip 4 is heated by a winding 3 and an auxiliary coil 2 wound on a rod of steatite, the circuit to these being completed through contacts 6, 12 by depression of a push button, not shown. This heating causes the strip to move to the left thereby breaking the heating circuit at 6, 12, but the heating windings still give out heat to the strip which continues to bend thereby moving the lever 8 to close the contacts 15, 17 as described. An arm 28 on the end of the strip 4 also moves away from an adjustable screw 27 on the pivoted latch 23 allowing this to engage the end of the lever 8. The strip then begins to cool and eventually the arm 28 trips the latch 23 and the contacts 6, 12 are reclosed ready for the next operation of the push button.
GB1613734A 1934-05-30 1934-05-30 Improvements in thermally-controlled electric short-time switches Expired GB418810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1613734A GB418810A (en) 1934-05-30 1934-05-30 Improvements in thermally-controlled electric short-time switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1613734A GB418810A (en) 1934-05-30 1934-05-30 Improvements in thermally-controlled electric short-time switches

Publications (1)

Publication Number Publication Date
GB418810A true GB418810A (en) 1934-10-31

Family

ID=10071839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1613734A Expired GB418810A (en) 1934-05-30 1934-05-30 Improvements in thermally-controlled electric short-time switches

Country Status (1)

Country Link
GB (1) GB418810A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229064A (en) * 1961-01-07 1966-01-11 Laing Vortex Inc Dual bimetal switches for electrical heaters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229064A (en) * 1961-01-07 1966-01-11 Laing Vortex Inc Dual bimetal switches for electrical heaters

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