GB707569A - Thermally, or electromagnetically, operable electric switches - Google Patents

Thermally, or electromagnetically, operable electric switches

Info

Publication number
GB707569A
GB707569A GB10765/51A GB1076551A GB707569A GB 707569 A GB707569 A GB 707569A GB 10765/51 A GB10765/51 A GB 10765/51A GB 1076551 A GB1076551 A GB 1076551A GB 707569 A GB707569 A GB 707569A
Authority
GB
United Kingdom
Prior art keywords
lever
contact
bar
thermally
electromagnetically
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
GB10765/51A
Inventor
Sidney Roland Lowe
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.)
Midland Electric Manufacturing Co Ltd
Original Assignee
Midland Electric Manufacturing 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 Midland Electric Manufacturing Co Ltd filed Critical Midland Electric Manufacturing Co Ltd
Priority to GB10765/51A priority Critical patent/GB707569A/en
Publication of GB707569A publication Critical patent/GB707569A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)

Abstract

707,569. Thermal switches; electromagnetic switches. MIDLAND ELECTRIC MANUFACTURING CO., Ltd. May 8, 1952 [May 8, 1951], No. 10765/51. Class 38(5) Upon overload a thermally or electromagnetically operated member m moves to the left carrying with it a lever h so that a spring j arranged between the lever h and a lever d is moved over a dead-centre position and a contact f separated from a fixed contact g. The levers h, d are both pivoted at e and in the form shown a bimetal strip k heated by a current carrying loop r operates the member m. To reset the switch a bar o is moved downwards so as to engage a protuberance p on the lever h and move it back to its original position, the spring j again passing over dead-centres and the contact f snapping into engagement with the contact g. Further depression of the bar o from this position will open the contacts by causing the bar to engage a protuberance q on the lever d.
GB10765/51A 1951-05-08 1951-05-08 Thermally, or electromagnetically, operable electric switches Expired GB707569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10765/51A GB707569A (en) 1951-05-08 1951-05-08 Thermally, or electromagnetically, operable electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10765/51A GB707569A (en) 1951-05-08 1951-05-08 Thermally, or electromagnetically, operable electric switches

Publications (1)

Publication Number Publication Date
GB707569A true GB707569A (en) 1954-04-21

Family

ID=9973836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10765/51A Expired GB707569A (en) 1951-05-08 1951-05-08 Thermally, or electromagnetically, operable electric switches

Country Status (1)

Country Link
GB (1) GB707569A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015007A (en) * 1959-11-19 1961-12-26 Gen Electric Canada Thermal device
US3038051A (en) * 1959-08-07 1962-06-05 Gen Electric Canada Thermal device
US3238335A (en) * 1962-06-05 1966-03-01 Robertshaw Controls Co Thermal time delay electric switch means having selectively adjustable on and off times

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038051A (en) * 1959-08-07 1962-06-05 Gen Electric Canada Thermal device
US3015007A (en) * 1959-11-19 1961-12-26 Gen Electric Canada Thermal device
US3238335A (en) * 1962-06-05 1966-03-01 Robertshaw Controls Co Thermal time delay electric switch means having selectively adjustable on and off times

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