GB889634A - Improvements in magnetic snap action electric switches - Google Patents

Improvements in magnetic snap action electric switches

Info

Publication number
GB889634A
GB889634A GB7229/59A GB722959A GB889634A GB 889634 A GB889634 A GB 889634A GB 7229/59 A GB7229/59 A GB 7229/59A GB 722959 A GB722959 A GB 722959A GB 889634 A GB889634 A GB 889634A
Authority
GB
United Kingdom
Prior art keywords
strip
armature
contact
blade
base
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
GB7229/59A
Inventor
Arthur John Chinn
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.)
Rheostatic Co Ltd
Original Assignee
Rheostatic 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 Rheostatic Co Ltd filed Critical Rheostatic Co Ltd
Priority to GB7229/59A priority Critical patent/GB889634A/en
Priority to DER27318A priority patent/DE1200920B/en
Priority to CH229960A priority patent/CH363067A/en
Priority to FR820068A priority patent/FR1261219A/en
Publication of GB889634A publication Critical patent/GB889634A/en
Priority to US282829A priority patent/US3207877A/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
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/64—Contacts
    • H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action

Abstract

889,634. Thermal and partly magnetic switches. RHEOSTATIC CO. Ltd. Feb. 10, 1960 [March 2, 1959], No. 7229/59. Class 38 (5). A bimetal strip 15 is supported on a base 6 by means of a spring strip 16 and carries at its free end a twin armature 13, 14 co-operating with a permanent magnet 12 adjustably mounted on the base 6. An insulating member 18 depends from the free end of strip 15 and has a slot 19 for engagement with the end 20 of a switch blade 1 mounted on base 6 by a tongue 5. Blade 1 carries contacts 3, 4 for alternate engagement with contacts 9, 10 suitably carried on the base 6. Armature 13 is normally closer to magnet 12 than armature 14 and the strip 15 is thereby held down such that member 18 rests on the end 20 of the blade 1 and contact 3 is held against contact 9. A screw 11 serves to adjust this initial contact pressure. When heated strip 15 moves upwardly until armature 14 is closer to magnet 12 than armature 13, whereupon strip 15 snaps into its upper position and, after slight lostmotion due to slot 19, the blade 1 is snapped to bring contact 4 into engagement with contact 10. The switch differential is adjustable by a screw 17 which controls the total gap between the armatures 13 and 14. A knob 22, controlling pressure on a rigid tongue 33 riveted to strip 15, serves to set the operating temperature. The bimetal strip 15 may be replaced by a resilient strip and operation effected by a mechanical or thermal element, such as a rod and tube or bellows or diaphragm, acting on the tongue 33 in place of control 22. Alternatively the resilient strip 15 may be pivoted intermediate its ends and operated mechanically.
GB7229/59A 1959-03-02 1959-03-02 Improvements in magnetic snap action electric switches Expired GB889634A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB7229/59A GB889634A (en) 1959-03-02 1959-03-02 Improvements in magnetic snap action electric switches
DER27318A DE1200920B (en) 1959-03-02 1960-02-11 Heat switch
CH229960A CH363067A (en) 1959-03-02 1960-03-01 Snap-action switch
FR820068A FR1261219A (en) 1959-03-02 1960-03-01 Magnetic snap-action circuit breakers
US282829A US3207877A (en) 1959-03-02 1963-05-02 Thermostatic switch with permanent magnet induced snap action

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7229/59A GB889634A (en) 1959-03-02 1959-03-02 Improvements in magnetic snap action electric switches

Publications (1)

Publication Number Publication Date
GB889634A true GB889634A (en) 1962-02-21

Family

ID=9829115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7229/59A Expired GB889634A (en) 1959-03-02 1959-03-02 Improvements in magnetic snap action electric switches

Country Status (4)

Country Link
US (1) US3207877A (en)
CH (1) CH363067A (en)
DE (1) DE1200920B (en)
GB (1) GB889634A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE382375B (en) * 1974-04-19 1976-02-02 Electrolux Ab DEVICE FOR A VACUUM CLEANER INCLUDING A TEMPERATURE-SENSING BODY

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236282A (en) * 1938-04-28 1941-03-25 Gen Electric Controller
US2272021A (en) * 1938-11-30 1942-02-03 Micro Switch Corp Snap switch
US2232243A (en) * 1939-06-24 1941-02-18 L R Teeple Company Electric switching mechanism
NL72699C (en) * 1946-01-09
US2493294A (en) * 1946-07-05 1950-01-03 Honeywell Regulator Co Control device
NL141584B (en) * 1947-07-26 Dow Chemical Co PROCEDURE FOR PREPARING AN ANTI-CORROSION AGENT FOR USE IN CONTACT WITH METALS.
US2547171A (en) * 1947-10-31 1951-04-03 Essex Wire Corp Snap switch
US2601556A (en) * 1947-10-31 1952-06-24 Essex Wire Corp Snap switch
BE486196A (en) * 1947-12-09
GB687258A (en) * 1951-10-18 1953-02-11 Rheostatic Co Ltd Improvements in safety switches for electrically heated appliances
US2843720A (en) * 1954-04-22 1958-07-15 Gen Electric Heating and control arrangement for electrically heated cooking receptacle
AT206667B (en) * 1958-02-20 1959-12-10 Landis & Gyr Ag Room temperature controller

Also Published As

Publication number Publication date
US3207877A (en) 1965-09-21
DE1200920B (en) 1965-09-16
CH363067A (en) 1962-07-15

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