GB242726A - Improvements in or relating to thermostatic relays - Google Patents

Improvements in or relating to thermostatic relays

Info

Publication number
GB242726A
GB242726A GB1966524A GB1966524A GB242726A GB 242726 A GB242726 A GB 242726A GB 1966524 A GB1966524 A GB 1966524A GB 1966524 A GB1966524 A GB 1966524A GB 242726 A GB242726 A GB 242726A
Authority
GB
United Kingdom
Prior art keywords
bimetallic
variations
screw
temperature
moves
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
GB1966524A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric 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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Priority to GB1966524A priority Critical patent/GB242726A/en
Publication of GB242726A publication Critical patent/GB242726A/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

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

242,726. Igranic Electric Co., Ltd., and Tubbs, C. F. Aug. 19, 1924. Automatic c i r c u i t - breakers, tripped to open by the movement of a bimetallic member 1, are adjusted to operate at any desired temperature of the member 1 by two devices, such as screws 12, 14, which determine the position of a plate 11 which bears at 10 against the member 1. The member is V-shaped and may be surrounded by a heating coil and the screw 12, which is mounted in a frame 13 by means of a ball joint, is turned by a pointer 15 which moves over a scale which may be calibrated in percentages of overload. The screw 41 is used for coarse adjustment or zero setting. When the current reaches a strengtth corresponding to the predetermined overload, the end 9<a> of the bimetallic member 1 moves to the left and releases a spring-controlled bell-crank lever 9, 6 carrying a contact 5, which thereupon moves away from a contact 4. The device is re-set by a push-button 17. To compensate for variations of atmospheric temperature a second bimetallic strip 19, Fig. 6, may be mounted on the opposite side of the panel 3 and connected by a pin 20 to the strip 1. The strips act in opposition and so do not move for variations of temperature which affect both equally.
GB1966524A 1924-08-19 1924-08-19 Improvements in or relating to thermostatic relays Expired GB242726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1966524A GB242726A (en) 1924-08-19 1924-08-19 Improvements in or relating to thermostatic relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1966524A GB242726A (en) 1924-08-19 1924-08-19 Improvements in or relating to thermostatic relays

Publications (1)

Publication Number Publication Date
GB242726A true GB242726A (en) 1925-11-19

Family

ID=10133132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1966524A Expired GB242726A (en) 1924-08-19 1924-08-19 Improvements in or relating to thermostatic relays

Country Status (1)

Country Link
GB (1) GB242726A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455753A (en) * 1944-10-10 1948-12-07 Trumbull Electric Mfg Co Thermal circuit breaker
US2492750A (en) * 1947-01-18 1949-12-27 Gen Electric Fluorescent lamp starter
US2492382A (en) * 1944-09-23 1949-12-27 Mechanical Products Inc Resettable overload circuit breaker
US2922008A (en) * 1957-07-31 1960-01-19 Westinghouse Electric Corp Circuit breaker
US2942081A (en) * 1958-02-13 1960-06-21 Westinghouse Electric Corp Thermal overload relay
US3361882A (en) * 1965-10-24 1968-01-02 Texas Instruments Inc Circuit breaker having a compensating element which compensates for ambient temperature without displacing the catch attached thereto

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492382A (en) * 1944-09-23 1949-12-27 Mechanical Products Inc Resettable overload circuit breaker
US2455753A (en) * 1944-10-10 1948-12-07 Trumbull Electric Mfg Co Thermal circuit breaker
US2492750A (en) * 1947-01-18 1949-12-27 Gen Electric Fluorescent lamp starter
US2922008A (en) * 1957-07-31 1960-01-19 Westinghouse Electric Corp Circuit breaker
US2942081A (en) * 1958-02-13 1960-06-21 Westinghouse Electric Corp Thermal overload relay
US3361882A (en) * 1965-10-24 1968-01-02 Texas Instruments Inc Circuit breaker having a compensating element which compensates for ambient temperature without displacing the catch attached thereto

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