GB503843A - Improvements relating to electric switches - Google Patents

Improvements relating to electric switches

Info

Publication number
GB503843A
GB503843A GB2789937A GB2789937A GB503843A GB 503843 A GB503843 A GB 503843A GB 2789937 A GB2789937 A GB 2789937A GB 2789937 A GB2789937 A GB 2789937A GB 503843 A GB503843 A GB 503843A
Authority
GB
United Kingdom
Prior art keywords
mercury
hole
vessel
class
coil
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
GB2789937A
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 GB2789937A priority Critical patent/GB503843A/en
Publication of GB503843A publication Critical patent/GB503843A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Abstract

503,843. Mercury switches. CIANCHI, A. Oct. 13, 1937, No. 27899. [Class 38 (v)] A mercury switch comprises a vessel 1 com. municating by means of a small hole 2 with a vessel 3 Depression of a plunger 10 either by means of a coil 12 or a moving magnet causes mercury to flow slowly through hole 2 and complete a circuit between an electrode 7 and electrodes 8 in a side limb 9, an air hole 13 being provided in the vessel 1. On de-energization of coil 12, mercury flows back slowly to give a retarded break. There may be more than one side limb 9 which may be diametrically opposite or in a direction at right-angles. The time delay may be varied by tilting the switch. The hole 2 may be made in the manner described in Specification 497,323. Specification 6370/08, [Class 38], also is referred to.
GB2789937A 1937-10-13 1937-10-13 Improvements relating to electric switches Expired GB503843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2789937A GB503843A (en) 1937-10-13 1937-10-13 Improvements relating to electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2789937A GB503843A (en) 1937-10-13 1937-10-13 Improvements relating to electric switches

Publications (1)

Publication Number Publication Date
GB503843A true GB503843A (en) 1939-04-13

Family

ID=10267074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2789937A Expired GB503843A (en) 1937-10-13 1937-10-13 Improvements relating to electric switches

Country Status (1)

Country Link
GB (1) GB503843A (en)

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