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GB154503A - Improvements in electric controlling switches - Google Patents

Improvements in electric controlling switches

Info

Publication number
GB154503A
GB154503A GB750320A GB750320A GB154503A GB 154503 A GB154503 A GB 154503A GB 750320 A GB750320 A GB 750320A GB 750320 A GB750320 A GB 750320A GB 154503 A GB154503 A GB 154503A
Authority
GB
United Kingdom
Prior art keywords
lamp
switch
controlling switches
vessel
electric controlling
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
GB750320A
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.)
PUDUMJEE HORMUSJEE PUDUMJEE
Original Assignee
PUDUMJEE HORMUSJEE PUDUMJEE
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 PUDUMJEE HORMUSJEE PUDUMJEE filed Critical PUDUMJEE HORMUSJEE PUDUMJEE
Priority to GB750320A priority Critical patent/GB154503A/en
Publication of GB154503A publication Critical patent/GB154503A/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
    • H01H29/02—Details
    • H01H29/08—Means for introducing a predetermined time delay
    • H01H29/10—Means for introducing a predetermined time delay by constricting the flow of the contact liquid

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

154,503. Pudumjee, P. H. Match 12, 1920. Switches.-A double glass vessel a of hour-glass shape contains finely divided metallic powder which allows a fan, lamp, or other circuit to be closed for a particular time. Conducting-wires 1, 2, 3 enter each bulb and are connected to the terminals of a switch c. Another wire 4 is common to both bulbs and is connected to the socket for the lamp &c. connexion. The powder vessel is enclosed in a box open at one side, the switch c being attached to the opposite outer side.
GB750320A 1920-03-12 1920-03-12 Improvements in electric controlling switches Expired GB154503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB750320A GB154503A (en) 1920-03-12 1920-03-12 Improvements in electric controlling switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB750320A GB154503A (en) 1920-03-12 1920-03-12 Improvements in electric controlling switches

Publications (1)

Publication Number Publication Date
GB154503A true GB154503A (en) 1920-12-02

Family

ID=9834353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB750320A Expired GB154503A (en) 1920-03-12 1920-03-12 Improvements in electric controlling switches

Country Status (1)

Country Link
GB (1) GB154503A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935579A (en) * 1958-06-09 1960-05-03 Sayles St Sales Co Electrical switch
US3088003A (en) * 1960-05-24 1963-04-30 Sherman S Fishman Electro-mechanical switch
US4138600A (en) * 1977-04-22 1979-02-06 Ozols Karlis V Force-responsive device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935579A (en) * 1958-06-09 1960-05-03 Sayles St Sales Co Electrical switch
US3088003A (en) * 1960-05-24 1963-04-30 Sherman S Fishman Electro-mechanical switch
US4138600A (en) * 1977-04-22 1979-02-06 Ozols Karlis V Force-responsive device

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