GB548498A - A float-operated electric switch - Google Patents

A float-operated electric switch

Info

Publication number
GB548498A
GB548498A GB946741A GB946741A GB548498A GB 548498 A GB548498 A GB 548498A GB 946741 A GB946741 A GB 946741A GB 946741 A GB946741 A GB 946741A GB 548498 A GB548498 A GB 548498A
Authority
GB
United Kingdom
Prior art keywords
float
contacts
bridge
electric switch
operated electric
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
GB946741A
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.)
Chance Brothers & Co Ltd
Original Assignee
Chance Brothers & 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 Chance Brothers & Co Ltd filed Critical Chance Brothers & Co Ltd
Priority to GB946741A priority Critical patent/GB548498A/en
Publication of GB548498A publication Critical patent/GB548498A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

548,498. Electromagnetic switches. CHANCE BROS., & CO., Ltd., and BERTENSHAW, N. W. July 25, 1941, No. 9467. [Class 38 (v)] A float-operated switch comprises an iron bridgecontact i, and a permanent magnet k carried by the float j, which raises the contact-bridge at its lowest level but allows it to fall and bridge mercury contacts c when the liquid level rises. The casing a has three compartments, the middle one only being open to liquid through apertures o, the lowermost having a glass container b for the contacts c, i. The float is guided by arms m engaging columns g enclosing the leads f to the contacts c.
GB946741A 1941-07-25 1941-07-25 A float-operated electric switch Expired GB548498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB946741A GB548498A (en) 1941-07-25 1941-07-25 A float-operated electric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB946741A GB548498A (en) 1941-07-25 1941-07-25 A float-operated electric switch

Publications (1)

Publication Number Publication Date
GB548498A true GB548498A (en) 1942-10-13

Family

ID=9872534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB946741A Expired GB548498A (en) 1941-07-25 1941-07-25 A float-operated electric switch

Country Status (1)

Country Link
GB (1) GB548498A (en)

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