GB696070A - Improvements in or relating to apparatus comprising electrical resistance heating elements and to electrical switches for use therefor - Google Patents

Improvements in or relating to apparatus comprising electrical resistance heating elements and to electrical switches for use therefor

Info

Publication number
GB696070A
GB696070A GB1672150A GB1672150A GB696070A GB 696070 A GB696070 A GB 696070A GB 1672150 A GB1672150 A GB 1672150A GB 1672150 A GB1672150 A GB 1672150A GB 696070 A GB696070 A GB 696070A
Authority
GB
United Kingdom
Prior art keywords
arm
energised
contacts
bimetallic strip
switches
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
GB1672150A
Inventor
Vivian Paul Marciandi
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1672150A priority Critical patent/GB696070A/en
Publication of GB696070A publication Critical patent/GB696070A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0213—Switches using bimetallic elements

Landscapes

  • Cookers (AREA)

Abstract

696,070. Switches held set and freed mechanically; thermal switches. ELECTRIC & MUSICAL INDUSTRIES, Ltd., July 4, 1951 [July 5, 1950], No. 16721/50. Class 38(v) [Also in Group XI] Apparatus for electrically heating liquids may comprise a coffee percolator in which an auxiliary heating element 5 is energised continuously and a main element 4 is controllable manually by a rotatable cam 13 or automatically by a bimetallic strip 15 secured in heat conducting relationship to the base 2 of a body 1 forming a liquid container. Switching means for the element 4 comprises a slotted resilient member 19 having a rolled end portion 22 and a stiffening rib 23. A movable contact 28 on an arm 20 co-operates with a fixed contact 29, and the bimetallic strip 15 may engage one end of the arm. With the manual control turned to "percolate", Fig. 2 (not shown) contacts 28, 29 are closed and element 5 also is energised. In the "keep hot" position arm 21 of the strip 19 is flexed by the cam 13 and as a result of the stiffness of arm 20, contacts 28, 29 are separated. In the event of the liquid completely evaporating with the main element energised, the container 1 becomes overheated, the bimetallic strip deforms to move arm 20 and open contacts 28, 29, and damage to the percolator is prevented. No damage results from the auxiliary element 5 only being energised.
GB1672150A 1950-07-05 1950-07-05 Improvements in or relating to apparatus comprising electrical resistance heating elements and to electrical switches for use therefor Expired GB696070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1672150A GB696070A (en) 1950-07-05 1950-07-05 Improvements in or relating to apparatus comprising electrical resistance heating elements and to electrical switches for use therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1672150A GB696070A (en) 1950-07-05 1950-07-05 Improvements in or relating to apparatus comprising electrical resistance heating elements and to electrical switches for use therefor

Publications (1)

Publication Number Publication Date
GB696070A true GB696070A (en) 1953-08-26

Family

ID=10082448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1672150A Expired GB696070A (en) 1950-07-05 1950-07-05 Improvements in or relating to apparatus comprising electrical resistance heating elements and to electrical switches for use therefor

Country Status (1)

Country Link
GB (1) GB696070A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342834B (en) * 1997-07-11 2001-12-19 Strix Ltd Thick film electric heaters
GB2365302A (en) * 1997-07-11 2002-02-13 Strix Ltd Liquid heating vessels and controls therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342834B (en) * 1997-07-11 2001-12-19 Strix Ltd Thick film electric heaters
GB2365302A (en) * 1997-07-11 2002-02-13 Strix Ltd Liquid heating vessels and controls therefor
GB2365302B (en) * 1997-07-11 2002-03-27 Strix Ltd Liquid heating vessels and controls therefor

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