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GB525106A - Improvements in or relating to thermally operated electric switches - Google Patents

Improvements in or relating to thermally operated electric switches

Info

Publication number
GB525106A
GB525106A GB5623/39A GB562339A GB525106A GB 525106 A GB525106 A GB 525106A GB 5623/39 A GB5623/39 A GB 5623/39A GB 562339 A GB562339 A GB 562339A GB 525106 A GB525106 A GB 525106A
Authority
GB
United Kingdom
Prior art keywords
contacts
bellows
spindle
snap
action
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
GB5623/39A
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
Priority to BE463147D priority Critical patent/BE463147A/xx
Application filed by British Thermostat Co Ltd filed Critical British Thermostat Co Ltd
Priority to GB5623/39A priority patent/GB525106A/en
Priority to US319520A priority patent/US2276885A/en
Publication of GB525106A publication Critical patent/GB525106A/en
Priority to FR921979D priority patent/FR921979A/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
    • H01H5/045—Energy stored by deformation of elastic members making use of cooperating spring loaded wedging or camming parts between operating member and contact structure
    • 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
    • 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
    • H01H37/26—Means for adjustment of "on" or "off" operating temperature by adjustment of abutment for "off" position of the movable contact
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

525.106. Thermal switches; snap-action switches. SHERLCCK, J. E.. and BRITISH THERMOSTAT CO., Ltd. Feb. 20, 1939, No. 5623. [Class 38 (v)] In a snap-action thermal switch adapted to give increased pressure between the contacts up to the moment of breaking contact, the thermal element, which may be a' bellows c, acts on a spindle a having a double - ramp l engaged by a number of plungers k pressed inwards by a coil spring m which surrounds their outer ends and mounted in the movable contactmember j ; or alternatively the bellows may operate on the snap - action component and the spindle a operates the contacts. As shown the bellows c act against a spring e which can be adjusted by rotating a knob t. As the spindle a rises, the plungers k move outwards straining the spring m till the apex of the ramp is reached when the contact member j moves suddenly downwards bringing contacts n into engagement with fixed contacts o.
GB5623/39A 1939-02-20 1939-02-20 Improvements in or relating to thermally operated electric switches Expired GB525106A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE463147D BE463147A (en) 1939-02-20
GB5623/39A GB525106A (en) 1939-02-20 1939-02-20 Improvements in or relating to thermally operated electric switches
US319520A US2276885A (en) 1939-02-20 1940-02-17 Thermally operated electric switch
FR921979D FR921979A (en) 1939-02-20 1946-02-11 Improvements to electric switches actuated by thermal means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5623/39A GB525106A (en) 1939-02-20 1939-02-20 Improvements in or relating to thermally operated electric switches

Publications (1)

Publication Number Publication Date
GB525106A true GB525106A (en) 1940-08-21

Family

ID=9799560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5623/39A Expired GB525106A (en) 1939-02-20 1939-02-20 Improvements in or relating to thermally operated electric switches

Country Status (4)

Country Link
US (1) US2276885A (en)
BE (1) BE463147A (en)
FR (1) FR921979A (en)
GB (1) GB525106A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446355A (en) * 1944-07-20 1948-08-03 Jeffrey Mfg Co Detent mechanism for pressure regulators
US2511640A (en) * 1946-09-30 1950-06-13 Cutler Hammer Inc Circuit controlling device
US2591993A (en) * 1947-10-07 1952-04-08 Peterson Co Carl G Multipawl feed mechanism
US2716902A (en) * 1949-10-19 1955-09-06 Bingham Herbrand Corp Mechanism control
US3062071A (en) * 1959-12-29 1962-11-06 Warren P Morrow Actuator for triggering system
DE1153439B (en) * 1961-03-01 1963-08-29 Busch Jaeger Duerener Metall Temperature-dependent electrical switch with pot-shaped insulating material housing and pressurized can that can be used from outside
US3295468A (en) * 1962-10-16 1967-01-03 Thomas E Belshaw Dough forming machine

Also Published As

Publication number Publication date
FR921979A (en) 1947-05-23
BE463147A (en)
US2276885A (en) 1942-03-17

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