GB629821A - Improvements in or relating to push-button electric switches - Google Patents

Improvements in or relating to push-button electric switches

Info

Publication number
GB629821A
GB629821A GB3288247A GB3288247A GB629821A GB 629821 A GB629821 A GB 629821A GB 3288247 A GB3288247 A GB 3288247A GB 3288247 A GB3288247 A GB 3288247A GB 629821 A GB629821 A GB 629821A
Authority
GB
United Kingdom
Prior art keywords
push
button
casing
switch
retractive
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
GB3288247A
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.)
Electro Hydraulics Ltd
Original Assignee
Electro Hydraulics 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 Electro Hydraulics Ltd filed Critical Electro Hydraulics Ltd
Priority to GB3288247A priority Critical patent/GB629821A/en
Publication of GB629821A publication Critical patent/GB629821A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details

Landscapes

  • Push-Button Switches (AREA)

Abstract

629,821. Press-button retractive switches. ELECTRO - HYDRALTLICS, Ltd., and HUNTER, A. Dec. 12, 1947, No. 32882. [Class 38(v)] The movable contact structure of a retractive push-button switch comprises a metallic portion 8 normally bridging spring contacts 5, and a non - pitting portion 9, e.g.. of carbon or silver graphite, which is first moved between and then beyond contacts 5 to break the circuit when the push-butt o n i s depressed against the action of a spring 17. The portions 8, 9 are cylindrical with flat contact faces proper, and the shaft 12 carrying them is of square section and moves non-rotatably in a square hole in a disc 13 having a tag 14 engaging a hole 15 in the metal casing 1. The push-button moves through a rubber packing 21, and a gasket 23 is arranged between the casing and a cover 22, so as to render the switch dirt and water-proof. The casing may be earthed at 25. The portion 9 is on the other side of portion 8 for a push-to-make switch.
GB3288247A 1947-12-12 1947-12-12 Improvements in or relating to push-button electric switches Expired GB629821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3288247A GB629821A (en) 1947-12-12 1947-12-12 Improvements in or relating to push-button electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3288247A GB629821A (en) 1947-12-12 1947-12-12 Improvements in or relating to push-button electric switches

Publications (1)

Publication Number Publication Date
GB629821A true GB629821A (en) 1949-09-28

Family

ID=10345438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3288247A Expired GB629821A (en) 1947-12-12 1947-12-12 Improvements in or relating to push-button electric switches

Country Status (1)

Country Link
GB (1) GB629821A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165996A (en) * 1984-10-24 1986-04-23 Expo Safety Syst Operating means for electrical equipment within a sealed enclosure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165996A (en) * 1984-10-24 1986-04-23 Expo Safety Syst Operating means for electrical equipment within a sealed enclosure

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