GB558543A - Improvements in or relating to electric wall switches - Google Patents

Improvements in or relating to electric wall switches

Info

Publication number
GB558543A
GB558543A GB1859642A GB1859642A GB558543A GB 558543 A GB558543 A GB 558543A GB 1859642 A GB1859642 A GB 1859642A GB 1859642 A GB1859642 A GB 1859642A GB 558543 A GB558543 A GB 558543A
Authority
GB
United Kingdom
Prior art keywords
ball
pressed upward
relating
spring
roller
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
GB1859642A
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.)
SMART AND BROWN ENGINEERS Ltd
Original Assignee
SMART AND BROWN ENGINEERS 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 SMART AND BROWN ENGINEERS Ltd filed Critical SMART AND BROWN ENGINEERS Ltd
Priority to GB1859642A priority Critical patent/GB558543A/en
Publication of GB558543A publication Critical patent/GB558543A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts

Abstract

558,543. Tumbler switches. SMART & BROWN (ENGINEERS), Ltd., and COLE, S. W. Dec. 3,1, 1942, No. 18596. [Class 38 (v)] In a switch a pair of spaced metal contacts 8 are bridged by a metal ball 6 or roller 22 pressed upward by a spring. A cam member on a lever 16 depresses the ball &c. to break the contact. The ball may have an insulating member 20 interposed between it and the operating cam, and in a modification this member extends around the ball. In Fig. 11 the roller 22 is pressed upward by the ends of a plate spring 24. In a further modification a ball is pressed upward by the bowed part of a similar spring.
GB1859642A 1942-12-31 1942-12-31 Improvements in or relating to electric wall switches Expired GB558543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1859642A GB558543A (en) 1942-12-31 1942-12-31 Improvements in or relating to electric wall switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1859642A GB558543A (en) 1942-12-31 1942-12-31 Improvements in or relating to electric wall switches

Publications (1)

Publication Number Publication Date
GB558543A true GB558543A (en) 1944-01-10

Family

ID=10115164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1859642A Expired GB558543A (en) 1942-12-31 1942-12-31 Improvements in or relating to electric wall switches

Country Status (1)

Country Link
GB (1) GB558543A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880291A (en) * 1955-01-14 1959-03-31 Mc Graw Edison Co Protectors for electric circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880291A (en) * 1955-01-14 1959-03-31 Mc Graw Edison Co Protectors for electric circuits

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