GB867245A - Improvements in or relating to snap-action thermally-responsive electric switches - Google Patents

Improvements in or relating to snap-action thermally-responsive electric switches

Info

Publication number
GB867245A
GB867245A GB2283358A GB2283358A GB867245A GB 867245 A GB867245 A GB 867245A GB 2283358 A GB2283358 A GB 2283358A GB 2283358 A GB2283358 A GB 2283358A GB 867245 A GB867245 A GB 867245A
Authority
GB
United Kingdom
Prior art keywords
arm
spring
casing
switch
apex
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
GB2283358A
Inventor
John Edward Sherlock
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.)
British Thermostat Co Ltd
Original Assignee
British Thermostat 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 British Thermostat Co Ltd filed Critical British Thermostat Co Ltd
Priority to GB2283358A priority Critical patent/GB867245A/en
Priority to ES0250751A priority patent/ES250751A1/en
Priority to DEB54023A priority patent/DE1156870B/en
Priority to FR800457A priority patent/FR1230831A/en
Publication of GB867245A publication Critical patent/GB867245A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26—Details
    • H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
    • H01H35/2614—Means for adjustment of "ON" or "OFF" operating pressure by varying the bias on the pressure sensitive element

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

867,245. Thermal switches. BRITISH THERMOSTAT CO. Ltd. July 3, 1959 [July 16, 1958], No. 22833/58. Class 38 (5). A switch for a refrigerator in which all adjustments can be made from one face comprises a bellows 12 acted on by the apex of a substantially " A " shaped leaf-spring 2, the legs of which are supported on lugs 3 bent from the casing 1. The centre portion of spring 2 has an aperture located on a spigot 4 extending from the centre of a range cam 5 adjustable by spindle 7. A raised part 6 adjacent the central aperture in spring 2 acts as a cam follower. The apex of spring 2 presses on a trimming-screw 10 threaded in the movable end-plate of bellows 12 and adjustable via a hole 14 in the casing 1. A tongue 23 extends from the apex of spring 2 to engage an arm 19 articulated at 17 to a switch arm 18 which is pivoted at 16 and moves an arm 26 (pivoted at 27) through the intermediary of a transverse bowed snap-action spring 28 as in Specification 829,660. The arm 26 carries a bridging contact 25 for co-operation with fixed contacts 24. The free end of arm 19 can move between a casing lug 20 and a screw 21, adjustable via hole 22 in the casing 1 to set the switch differential. An upstanding arm 30 formed on switch arm 18 can be engaged by a radial projection 29 on cam 5 to hold the contacts open when the spindle 7 is in one position.
GB2283358A 1958-07-16 1958-07-16 Improvements in or relating to snap-action thermally-responsive electric switches Expired GB867245A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2283358A GB867245A (en) 1958-07-16 1958-07-16 Improvements in or relating to snap-action thermally-responsive electric switches
ES0250751A ES250751A1 (en) 1958-07-16 1959-07-11 Improvements in or relating to snap-action thermally-responsive electric switches
DEB54023A DE1156870B (en) 1958-07-16 1959-07-15 Switching and adjusting device for temperature controller with a leaf spring
FR800457A FR1230831A (en) 1958-07-16 1959-07-16 Heat sensitive snap-action switch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2283358A GB867245A (en) 1958-07-16 1958-07-16 Improvements in or relating to snap-action thermally-responsive electric switches

Publications (1)

Publication Number Publication Date
GB867245A true GB867245A (en) 1961-05-03

Family

ID=10185785

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2283358A Expired GB867245A (en) 1958-07-16 1958-07-16 Improvements in or relating to snap-action thermally-responsive electric switches

Country Status (4)

Country Link
DE (1) DE1156870B (en)
ES (1) ES250751A1 (en)
FR (1) FR1230831A (en)
GB (1) GB867245A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558474A (en) * 1976-02-10 1980-01-03 Ranco Inc Temerature or pressure responsive switch units
DE2837739C3 (en) * 1978-08-30 1981-03-26 Willi 74321 Bietigheim-Bissingen Quitoschinger Pressure switch with adjustable switching point

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1850360A (en) * 1931-02-16 1932-03-22 Gen Plate Co Thermostatic switch
US2106450A (en) * 1936-08-21 1938-01-25 Internat Engineering Corp Control
US2611845A (en) * 1951-03-31 1952-09-23 Hotpoint Inc Temperature control device
US2762888A (en) * 1953-09-10 1956-09-11 Gen Motors Corp Refrigerating apparatus

Also Published As

Publication number Publication date
FR1230831A (en) 1960-09-20
ES250751A1 (en) 1960-03-01
DE1156870B (en) 1963-11-07

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