GB742883A - Improvements in electric snap-action switches - Google Patents
Improvements in electric snap-action switchesInfo
- Publication number
- GB742883A GB742883A GB4714/53A GB471453A GB742883A GB 742883 A GB742883 A GB 742883A GB 4714/53 A GB4714/53 A GB 4714/53A GB 471453 A GB471453 A GB 471453A GB 742883 A GB742883 A GB 742883A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- abutment
- bimetal
- spring
- screw
- 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
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/12—Means for adjustment of "on" or "off" operating temperature
Landscapes
- Thermally Actuated Switches (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Abstract
742,883. Thermal switches; snap-action switches. SUNVIC CONTROLS, Ltd. Jan. 27, 1954 [Feb .19, 1953], No. 4714/53. Class 38(5) A switch comprises a flexible contactcarrier and a compression element together forming a dead-centre assembly, the end of the carrier remote from the contact being mounted and connected with an operating member for pivotal movement of the carrier and member in unison about an axis perpendicular to the plane of contact movement. In one form, Fig. 3, a trifurcated blade spring 2 has an aperture engaging a groove (not shown) in a screw 15 in the base 11, the operating member 1 being a bimetal strip and being riveted at 12 to the spring 2, the strip 1 having a clearance hole 17 for the screw 15. The other end of strip 1 engages an adjustable abutment 19 in a second bimetal strip 30 supported by a U-shaped member 33 pivoted at 36. The member 33 has an extension 39 engaging an adjusting cam 40. As shown, strip 1 is heated by a coil 43 and strip 30 acts as a compensating strip, but strip 1 may be heated by current through it or the roles of strips 1 and 30 may be reversed. In a modification, Fig. 1. (not shown), the strip 30 and cam 40 are omitted, the abutment 19 being carried by a fixed bracket. Instead of using a bimetal. the switch may be operated by movement of abutment 19. In another arrangement, Fig. 4, the bimetal strip 64 and spring 53 are loosely riveted together and a screw 67 provides a factory adjustment. The strip 64 is held against an abutment 68 by a leaf spring 69. Specifications 419,917, 517,538, 585,972, 683,819 and 710,259 are referred to.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4714/53A GB742883A (en) | 1953-02-19 | 1953-02-19 | Improvements in electric snap-action switches |
US407723A US2776352A (en) | 1953-02-19 | 1954-02-02 | Electric snap-action switch devices |
FR1097675D FR1097675A (en) | 1953-02-19 | 1954-02-15 | Electric switch |
DES37741A DE1161974B (en) | 1953-02-19 | 1954-02-19 | Snap switch activated by a bimetal arm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4714/53A GB742883A (en) | 1953-02-19 | 1953-02-19 | Improvements in electric snap-action switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB742883A true GB742883A (en) | 1956-01-04 |
Family
ID=9782408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4714/53A Expired GB742883A (en) | 1953-02-19 | 1953-02-19 | Improvements in electric snap-action switches |
Country Status (4)
Country | Link |
---|---|
US (1) | US2776352A (en) |
DE (1) | DE1161974B (en) |
FR (1) | FR1097675A (en) |
GB (1) | GB742883A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2260029A (en) * | 1991-09-30 | 1993-03-31 | Gec Alsthom South Africa | Electrical switch |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2913549A (en) * | 1957-05-29 | 1959-11-17 | Gen Electric | Time delay switches |
US3721937A (en) * | 1968-06-11 | 1973-03-20 | P Schuller | Electric temperature regulator |
BE793834A (en) * | 1972-01-14 | 1973-05-02 | Telemecanique Electrique | CURRENT ADJUSTMENT DEVICE FOR THERMAL RELAY |
US4184136A (en) * | 1978-02-16 | 1980-01-15 | Technar, Incorporated | Fast acting thermal relay |
DE2927292A1 (en) * | 1979-07-06 | 1981-01-15 | Eugen Jaeger Gmbh | TEMPERATURE CONTROLLER FOR AQUARIUM HEATER |
DE102007005135A1 (en) * | 2007-02-01 | 2008-08-07 | Siemens Ag | Electromechanical switching device for protecting electrical lines or consumers and using a thermal coupling in an electromechanical switching device |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2170748A (en) * | 1935-12-04 | 1939-08-22 | Micro Switch Corp | Snap switch |
US2144120A (en) * | 1936-06-19 | 1939-01-17 | Vapor Car Heating Co Inc | Thermal contactor |
US2135864A (en) * | 1936-09-23 | 1938-11-08 | Emerson Electric Mfg Co | Circuit breaker |
US2189996A (en) * | 1937-02-27 | 1940-02-13 | Micro Switch Corp | Control apparatus |
BE430542A (en) * | 1938-04-22 | |||
US2236699A (en) * | 1938-11-30 | 1941-04-01 | Micro Switch Corp | Snap switch |
US2489391A (en) * | 1943-12-09 | 1949-11-29 | Photoswitch Inc | Thermally controlled electric relay |
US2486365A (en) * | 1943-12-23 | 1949-10-25 | Casco Products Corp | Thermostatic switch |
US2506272A (en) * | 1945-04-11 | 1950-05-02 | Sunbeam Corp | Combination starting and overload protective relay |
US2510021A (en) * | 1946-01-12 | 1950-05-30 | First Ind Corp | Snap action mechanism |
DE814760C (en) * | 1948-07-27 | 1951-09-27 | Philips Nv | Switches, in particular for use in electric record players |
US2599473A (en) * | 1949-10-25 | 1952-06-03 | Miller Edwin August | Thermal relay |
DE871797C (en) * | 1949-12-29 | 1953-03-26 | Sunvic Controls Ltd | Electric energy regulator |
BE508318A (en) * | 1951-01-10 | |||
USRE24268E (en) * | 1951-11-29 | 1957-01-29 | Zuckerman |
-
1953
- 1953-02-19 GB GB4714/53A patent/GB742883A/en not_active Expired
-
1954
- 1954-02-02 US US407723A patent/US2776352A/en not_active Expired - Lifetime
- 1954-02-15 FR FR1097675D patent/FR1097675A/en not_active Expired
- 1954-02-19 DE DES37741A patent/DE1161974B/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2260029A (en) * | 1991-09-30 | 1993-03-31 | Gec Alsthom South Africa | Electrical switch |
GB2260029B (en) * | 1991-09-30 | 1995-08-30 | Gec Alsthom South Africa | Electrical switch |
AU662762B2 (en) * | 1991-09-30 | 1995-09-14 | Gec Alsthom South Africa (Proprietary) Limited | Electrical switch |
Also Published As
Publication number | Publication date |
---|---|
FR1097675A (en) | 1955-07-08 |
US2776352A (en) | 1957-01-01 |
DE1161974B (en) | 1964-01-30 |
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