GB831558A - Key operable electric switches - Google Patents

Key operable electric switches

Info

Publication number
GB831558A
GB831558A GB1554957A GB1554957A GB831558A GB 831558 A GB831558 A GB 831558A GB 1554957 A GB1554957 A GB 1554957A GB 1554957 A GB1554957 A GB 1554957A GB 831558 A GB831558 A GB 831558A
Authority
GB
United Kingdom
Prior art keywords
block
key
projections
pair
key operable
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
GB1554957A
Inventor
Frederick Joseph Hodgetts
Albert Norman Morris
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.)
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
Wilmot Breeden 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 Wilmot Breeden Ltd filed Critical Wilmot Breeden Ltd
Priority to GB1554957A priority Critical patent/GB831558A/en
Publication of GB831558A publication Critical patent/GB831558A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/06—Key inserted and then turned to effect operation of the switch

Landscapes

  • Tumbler Switches (AREA)

Abstract

831,558. Mechanical switches, without quick action. WILMOT-BREEDEN Ltd. May 9, 1958 [May 16, 1957], No. 15549/57. Class 38 (5). A key operable switch comprises an insulating base c carrying a pair of hollow rivet contacts d and attached to a housing a having a lock f operable by a key g for rotation of an insulating block i pivoted on a pin p. A metal disc r is mounted on the part q of block i to have axial freedom against a spring t but to rotate with block i. Projections s are pressed out of disc r to comprise a bridging contact when seated in the conical recesses e in the ends of rivets d as shown. The angular rotation of block i is limited to 90 degrees by a projection n inside housing a which engages a peripheral groove in the block i and in the " off " position (Fig. 3, not shown) the projections s engage a pair of recesses in the base c.
GB1554957A 1957-05-16 1957-05-16 Key operable electric switches Expired GB831558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1554957A GB831558A (en) 1957-05-16 1957-05-16 Key operable electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1554957A GB831558A (en) 1957-05-16 1957-05-16 Key operable electric switches

Publications (1)

Publication Number Publication Date
GB831558A true GB831558A (en) 1960-03-30

Family

ID=10061120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1554957A Expired GB831558A (en) 1957-05-16 1957-05-16 Key operable electric switches

Country Status (1)

Country Link
GB (1) GB831558A (en)

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