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GB492802A - Improvements relating to mercury and other sealed container switches - Google Patents

Improvements relating to mercury and other sealed container switches

Info

Publication number
GB492802A
GB492802A GB910338A GB910338A GB492802A GB 492802 A GB492802 A GB 492802A GB 910338 A GB910338 A GB 910338A GB 910338 A GB910338 A GB 910338A GB 492802 A GB492802 A GB 492802A
Authority
GB
United Kingdom
Prior art keywords
mercury
lamps
bimetallic strip
switches
armature
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
GB910338A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB910338A priority Critical patent/GB492802A/en
Publication of GB492802A publication Critical patent/GB492802A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/06—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts

Landscapes

  • Thermally Actuated Switches (AREA)
  • Resistance Heating (AREA)

Abstract

492,802. Magnetic switches; mercury switches. CIANCHI, A. Feb. 24, 1937, No. 9103/38. Divided out of 490,946. [Class 38 (v)] When a bimetallic strip 10 carrying a U-shaped magnet 9 moves to the left, an armature 7, within a container 1 is pulled downwards and contacts operated. In the form shown the armature 7 is fixed to a float 3 the depression of which causes mercury to enter through a hole 6 and bridge electrodes 5, 8. This completes circuit which includes the heating coil 11 of the bimetallic strip so that should there be an overload, the strip will move back into the position shown and break the circuit. The device could also function as an interrupter. In a modification, Fig. 2 (not shown), the heating coil 11 is arranged in parallel with the contacts 4, 8 and the device causes the continual flashing of a series of lamps. The bimetallic strip carries also a second magnet which operates a second mercury switch controlling other lamps, the arrangement being such that when one set of lamps is " on " the other is " off ". Specifications 485,259, 485,564, and 490,946 are referred to.
GB910338A 1937-02-24 1937-02-24 Improvements relating to mercury and other sealed container switches Expired GB492802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB910338A GB492802A (en) 1937-02-24 1937-02-24 Improvements relating to mercury and other sealed container switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB910338A GB492802A (en) 1937-02-24 1937-02-24 Improvements relating to mercury and other sealed container switches

Publications (1)

Publication Number Publication Date
GB492802A true GB492802A (en) 1938-09-26

Family

ID=9865410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB910338A Expired GB492802A (en) 1937-02-24 1937-02-24 Improvements relating to mercury and other sealed container switches

Country Status (1)

Country Link
GB (1) GB492802A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088129B (en) * 1957-04-26 1960-09-01 Robertshaw Fulton Controls Co Magnetically operated mercury switch of small dimensions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088129B (en) * 1957-04-26 1960-09-01 Robertshaw Fulton Controls Co Magnetically operated mercury switch of small dimensions

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