GB867037A - Magnetically actuated mercury switch - Google Patents

Magnetically actuated mercury switch

Info

Publication number
GB867037A
GB867037A GB39079/57A GB3907957A GB867037A GB 867037 A GB867037 A GB 867037A GB 39079/57 A GB39079/57 A GB 39079/57A GB 3907957 A GB3907957 A GB 3907957A GB 867037 A GB867037 A GB 867037A
Authority
GB
United Kingdom
Prior art keywords
mercury
switch
switches
housing
mercury switch
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
GB39079/57A
Inventor
Roy Walter Houser
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 GB867037A publication Critical patent/GB867037A/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
    • H01H37/64—Contacts
    • H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/18—Switches having at least one liquid contact with level of surface of contact liquid displaced by non-electrical contact-making plunger

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Thermally Actuated Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

867,037. Mercury switches; thermal switches; magnetic switches. ROBERTSHAW-FULTON CONTROLS CO. Dec. 16, 1957 [April 26, 1957], No. 39079/57. Class 38 (5). A magnetically-operated mercury switch comprises a hermeticallysealed housing 12, 14 containing an iron ring 32 floating on mercury 30 and additionally supported by a spring washer 36. A permanent magnet 42 is mounted on a lever of any condition responsive device, for example a bimetallic strip 40. When magnet 42 approaches the bottom of the housing the ring 32 is attracted with a snap-action and forces mercury 30 into the narrow chamber 20 to bridge two contacts 22. An adjustable stop 44 serves to control the differential of the switch. It is stated that owing to the almost hemi-spherical surface of mercury 30 in the chamber 20 the switch will junction at angles up to 45 degrees from the vertical.
GB39079/57A 1957-04-26 1957-12-16 Magnetically actuated mercury switch Expired GB867037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US655259A US2914633A (en) 1957-04-26 1957-04-26 Magnet mercury switch

Publications (1)

Publication Number Publication Date
GB867037A true GB867037A (en) 1961-05-03

Family

ID=24628175

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39079/57A Expired GB867037A (en) 1957-04-26 1957-12-16 Magnetically actuated mercury switch

Country Status (4)

Country Link
US (1) US2914633A (en)
DE (1) DE1088129B (en)
FR (1) FR1197769A (en)
GB (1) GB867037A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274522A (en) * 1962-01-15 1966-09-20 Peter V N Heller Bistable element
US4642593A (en) * 1984-04-17 1987-02-10 Elenbaas George H Impulse mercury relay with magnetic interlock switch

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1558277A (en) * 1922-12-08 1925-10-20 Phelan Electrical switch
FR774036A (en) * 1933-06-27 1934-11-29 Philips Nv Mercury switch tube
DE637197C (en) * 1933-11-15 1936-10-23 Siemens Schuckertwerke Akt Ges Mercury switch with switching vessel closed on all sides
GB492802A (en) * 1937-02-24 1938-09-26 Alfredo Cianchi Improvements relating to mercury and other sealed container switches
US2247493A (en) * 1939-11-02 1941-07-01 Bell Telephone Labor Inc Mercury contact relay
US2385887A (en) * 1942-06-09 1945-10-02 Penn Electric Switch Co Switch unit
FR985870A (en) * 1949-05-11 1951-07-24 Magnetically operated mercury relay or contactor for use on ships or airplanes
US2658124A (en) * 1951-11-15 1953-11-03 Durakool Inc Mercury relay
US2709738A (en) * 1953-10-08 1955-05-31 Paul O Walter Liquid switch actuated by a permanent magnet

Also Published As

Publication number Publication date
US2914633A (en) 1959-11-24
DE1088129B (en) 1960-09-01
FR1197769A (en) 1959-12-02

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