GB751483A - An improved snap-action device particularly for thermally operated electric switches - Google Patents

An improved snap-action device particularly for thermally operated electric switches

Info

Publication number
GB751483A
GB751483A GB2412853A GB2412853A GB751483A GB 751483 A GB751483 A GB 751483A GB 2412853 A GB2412853 A GB 2412853A GB 2412853 A GB2412853 A GB 2412853A GB 751483 A GB751483 A GB 751483A
Authority
GB
United Kingdom
Prior art keywords
spring
strip
strips
tension
action device
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
GB2412853A
Inventor
James Fraser Mcandrew
Bernard Barton Stork
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.)
R E Thompson & Co Sunbury
Original Assignee
R E Thompson & Co Sunbury
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 R E Thompson & Co Sunbury filed Critical R E Thompson & Co Sunbury
Priority to GB2412853A priority Critical patent/GB751483A/en
Publication of GB751483A publication Critical patent/GB751483A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/60—Means for producing snap action

Landscapes

  • Thermally Actuated Switches (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)

Abstract

751,483. Thermal switches. THOMPSON & CO. (SUNBURY), Ltd., R. E. Dec. 1, 1954 [Sept. 1, 1953], No. 24128/53. Class 38(5) A snap action device comprises a leaf spring divided by slots into tension and compression strips which are interconnected at each end, the spring being supported at one end and between the ends of the tension strips, the operating force being applied to the free end. As applied to a thermal switch associated with an immersion heater, the spring 4 has two tension strips 6, 7 and a central compression strip 5, the strips 6, 7 being deformed at 8 to bow the strip 5. The spring is attached to a support 9 by a rivet 10 and plate 11, to which the parts 8 are clamped. The strip 5 is deformed at 30 to bias the spring to the Fig. 1 position where a contact 16 on strip 5 engages a fixed contact 17. The spring is moved over-centre by a bimetal strip 3 acting on the free end 19 of the spring. A stop 18 is adjustable to vary the differential, and the operating temperature is adjusted by a screw 22 acting on the support 9 which is biased counter-clockwise about a pivot 21 by terminal connections 27, 28.
GB2412853A 1953-09-01 1953-09-01 An improved snap-action device particularly for thermally operated electric switches Expired GB751483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2412853A GB751483A (en) 1953-09-01 1953-09-01 An improved snap-action device particularly for thermally operated electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2412853A GB751483A (en) 1953-09-01 1953-09-01 An improved snap-action device particularly for thermally operated electric switches

Publications (1)

Publication Number Publication Date
GB751483A true GB751483A (en) 1956-06-27

Family

ID=10206840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2412853A Expired GB751483A (en) 1953-09-01 1953-09-01 An improved snap-action device particularly for thermally operated electric switches

Country Status (1)

Country Link
GB (1) GB751483A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170500B (en) * 1957-10-22 1964-05-21 Ellenberger & Poensgen System thermostat with bimetal sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170500B (en) * 1957-10-22 1964-05-21 Ellenberger & Poensgen System thermostat with bimetal sensor

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