GB650576A - Improvements in temperature or pressure sensitive electric switch devices - Google Patents

Improvements in temperature or pressure sensitive electric switch devices

Info

Publication number
GB650576A
GB650576A GB5529/48A GB552948A GB650576A GB 650576 A GB650576 A GB 650576A GB 5529/48 A GB5529/48 A GB 5529/48A GB 552948 A GB552948 A GB 552948A GB 650576 A GB650576 A GB 650576A
Authority
GB
United Kingdom
Prior art keywords
arm
temperature
switch
capsule
support
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
GB5529/48A
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.)
Robertshaw Controls Co
Original Assignee
Robertshaw Fulton Controls Co
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 Robertshaw Fulton Controls Co filed Critical Robertshaw Fulton Controls Co
Publication of GB650576A publication Critical patent/GB650576A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member

Landscapes

  • Thermally Actuated Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Ink Jet (AREA)

Abstract

650,576. Thermal switches; actuation of switches. ROBERTSHAW-FULTON CONTROLS CO. Feb. 24. 1948, No. 5529. Convention date, March 14, 1947. [Class 38(v)] A temperature or pressure responsive switch has a compression spring which not only biasses the movable switch arm towards its " closed " position, but also maintains the arm in bearing engagement with a fixed supporting member. The switch has an insulating portion 24 carrying the moving contact member 20, and an L- shaped sheet metal portion 26. The base 28 of the portion 26 has a projection 32 with a notch 34, which engages in a slot 48 in a fixed support 44 and forms a pivot for the arm 22. Transverse tilting of the arm 22 is prevented by abutments 30 on the base 28, which engage the underside of the support 44. A coil spring 56 mounted between flaps 38, 52 on the portion 26 and support 44, extends through an aperture 36 in the portion 26 at an angle to the plane of the switch arm 22, so as to bias the arm to the closed position with the notched projection 32 correctly engaged in the slot 48. The arm 22 is engaged by a capsule 58 connected by a tube 60 to temperature or pressure sensitive means, and the capsule is supported on a threaded adjusting stem 66, which may be rotated in a fixed nut 68 to move the capsule relatively to the arm. The rotation of the stem 66 is limited by a lateral projection 74 thereon engaging a projecting finger 72 on a collar 70 adjustably secured to the nut 68.
GB5529/48A 1947-03-14 1948-02-24 Improvements in temperature or pressure sensitive electric switch devices Expired GB650576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US734617A US2488459A (en) 1947-03-14 1947-03-14 Condition responsive switching device

Publications (1)

Publication Number Publication Date
GB650576A true GB650576A (en) 1951-02-28

Family

ID=24952409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5529/48A Expired GB650576A (en) 1947-03-14 1948-02-24 Improvements in temperature or pressure sensitive electric switch devices

Country Status (2)

Country Link
US (1) US2488459A (en)
GB (1) GB650576A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635160A (en) * 1949-10-07 1953-04-14 Alexander J Lewus Air controlled switch
US2812404A (en) * 1955-12-08 1957-11-05 Honeywell Regulator Co Control device
US3040148A (en) * 1959-06-16 1962-06-19 Gen Electric Radiant heat room thermostat

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1232456A (en) * 1905-01-06 1917-07-03 Us Light & Heat Corp Relay.
US1660256A (en) * 1926-01-07 1928-02-21 Lamson Co Automatic switch
US2272249A (en) * 1938-12-27 1942-02-10 Automatic Control Corp Hydraulic transmission
US2296374A (en) * 1940-05-14 1942-09-22 Robertshaw Thermostat Co Switch
US2389880A (en) * 1943-11-02 1945-11-27 Robertshaw Thermostat Co Temperature responsive device

Also Published As

Publication number Publication date
US2488459A (en) 1949-11-15

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