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GB503619A - Improvements in or relating to thermostatic electric switches - Google Patents

Improvements in or relating to thermostatic electric switches

Info

Publication number
GB503619A
GB503619A GB2773237A GB2773237A GB503619A GB 503619 A GB503619 A GB 503619A GB 2773237 A GB2773237 A GB 2773237A GB 2773237 A GB2773237 A GB 2773237A GB 503619 A GB503619 A GB 503619A
Authority
GB
United Kingdom
Prior art keywords
bracket
fixed
plate
stud
spindle
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
GB2773237A
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 GB2773237A priority Critical patent/GB503619A/en
Publication of GB503619A publication Critical patent/GB503619A/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
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • H01H37/28—Means for adjustment of "on" or "off" operating temperature by adjustment of the position of the fixed contact
    • 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

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

503,619. Thermal switches. SHERLOCK, J. E., and BRITISH THERMOSTAT CO., Ltd. Oct. 12, 1937, No. 27732. [Class 38 (v)] A thermal switch comprises a fixed contact 1 carried by a light spring 14 attached to a resilient plate 2 fixed to a bracket 3. The movable contact 8 is carried on a bimetallic strip 9 fixed to a bracket 10, and carrying an armature 12 which co-operates with a permanent magnet 13 on the plate 2 to give a snap-action. The 'operating temperature is varied by rotation of a spindle 7 carrying a face cam 6 which engages a stud 8 to move ptate 2 towards and away from the base. When spindle 7 is turned to an extreme position, stud 8 falls into a recess 16a and circuit cannot be made since an extension 9b of the strip 9 first engages a stop 16. The temperature range can be varied by flexing bracket 10 by means of a screw 18. A modification is described in which two movable contact arms engage two contacts on a common plate 2 having a single adjusting cam.
GB2773237A 1937-10-12 1937-10-12 Improvements in or relating to thermostatic electric switches Expired GB503619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2773237A GB503619A (en) 1937-10-12 1937-10-12 Improvements in or relating to thermostatic electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2773237A GB503619A (en) 1937-10-12 1937-10-12 Improvements in or relating to thermostatic electric switches

Publications (1)

Publication Number Publication Date
GB503619A true GB503619A (en) 1939-04-12

Family

ID=10264355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2773237A Expired GB503619A (en) 1937-10-12 1937-10-12 Improvements in or relating to thermostatic electric switches

Country Status (1)

Country Link
GB (1) GB503619A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133449B (en) * 1958-02-20 1962-07-19 Landis & Gyr Ag Temperature-dependent electrical switch with switching magnet
GB2131616A (en) * 1982-11-22 1984-06-20 Jaeger Thermostatic switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133449B (en) * 1958-02-20 1962-07-19 Landis & Gyr Ag Temperature-dependent electrical switch with switching magnet
GB2131616A (en) * 1982-11-22 1984-06-20 Jaeger Thermostatic switch

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