GB1134392A - Improvements relating to switches - Google Patents

Improvements relating to switches

Info

Publication number
GB1134392A
GB1134392A GB3907965A GB3907965A GB1134392A GB 1134392 A GB1134392 A GB 1134392A GB 3907965 A GB3907965 A GB 3907965A GB 3907965 A GB3907965 A GB 3907965A GB 1134392 A GB1134392 A GB 1134392A
Authority
GB
United Kingdom
Prior art keywords
switch
cover
closed
interlock
slot
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
GB3907965A
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.)
BILL SWITCHGEAR Ltd
IAN HUMPHRIES
Original Assignee
BILL SWITCHGEAR Ltd
IAN HUMPHRIES
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 BILL SWITCHGEAR Ltd, IAN HUMPHRIES filed Critical BILL SWITCHGEAR Ltd
Priority to GB3907965A priority Critical patent/GB1134392A/en
Publication of GB1134392A publication Critical patent/GB1134392A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

1,134,392. Turnbutton fasteners. BILL SWITCHGEAR Ltd. and I. HUMPHRIES 7 Sept., 1966 [14 Sept., 1965], No. 39079/65. Heading E2A. [Also in Division H1] An interlock device for a switch comprises a body adapted to be rotatably mounted and having an abutment portion 10 for preventing operation of the switch, a retaining member 11 for retaining a switch cover closed and a finger piece 12 to facilitate manual operation of the device. In the position shown, Fig. 6, the cover may be opened but abutment 10 prevents the switch being closed. If the switch is rotated through 90‹ (Figs. 7, 8, not shown) the switch may be closed but member 11 contains a slot in the cover to prevent the cover being opened. For inspection of the switch, the interlock may be turned into the position in Fig. 7 with the cover open so that the switch can be closed with the cover open. Projection 15 when the interlock is in the closed position covers the outside of the slot. The interlock is retained in the closed position by a cam surface on a projection from abutment 10 being located in the slot 17 in the casing 18. The interlock may be a plastics moulding, for example of polyethylene, polypropylene, polyvinyl chloride or a polyamide. There may be one or more fuse-holders within the casing.
GB3907965A 1965-09-14 1965-09-14 Improvements relating to switches Expired GB1134392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3907965A GB1134392A (en) 1965-09-14 1965-09-14 Improvements relating to switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3907965A GB1134392A (en) 1965-09-14 1965-09-14 Improvements relating to switches

Publications (1)

Publication Number Publication Date
GB1134392A true GB1134392A (en) 1968-11-20

Family

ID=10407511

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3907965A Expired GB1134392A (en) 1965-09-14 1965-09-14 Improvements relating to switches

Country Status (1)

Country Link
GB (1) GB1134392A (en)

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