GB752494A - Improvements in or relating to interlocks between electric switches and associated apparatus - Google Patents

Improvements in or relating to interlocks between electric switches and associated apparatus

Info

Publication number
GB752494A
GB752494A GB11940/54A GB1194054A GB752494A GB 752494 A GB752494 A GB 752494A GB 11940/54 A GB11940/54 A GB 11940/54A GB 1194054 A GB1194054 A GB 1194054A GB 752494 A GB752494 A GB 752494A
Authority
GB
United Kingdom
Prior art keywords
screw
door
switch
tube
equipment
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
GB11940/54A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB752494A publication Critical patent/GB752494A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H01H9/226—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts the casing containing electrical equipment other than and operated by the switch

Landscapes

  • Patch Boards (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

752,494. Switchgear structures. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 26, 1954 [May 4, 1953], No. 11940/54. Class 38(5) An interlock between a door 10 of a housing for high-voltage equipment and a switch 28 controlling said equipment, comprises a tube 27 secured to the switch housing 26 and through which passes a screw 24 engaging at its inner end a switch operating member 30. The screw carries an L-shaped bracket 19, the limb 18 of which is slotted to receive a rivet 15 secured to the door 10. The tube has an inclined slot 32 in which is located a portion 34 of a spring wrapped round the tube, so that when withdrawing the screw to open the switch and unlock the door the spring binds on the screw thread and acts as a nut, thereby delaying opening of the door a sufficient time for the equipment to become de-energized. On closing the door, the screw can be slid inwards to close the switch, the spring moving outwardly in slot 32 and riding over the screw-thread.
GB11940/54A 1953-05-04 1954-04-26 Improvements in or relating to interlocks between electric switches and associated apparatus Expired GB752494A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US352672A US2725437A (en) 1953-05-04 1953-05-04 Interlock switch mechanisms

Publications (1)

Publication Number Publication Date
GB752494A true GB752494A (en) 1956-07-11

Family

ID=23386031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11940/54A Expired GB752494A (en) 1953-05-04 1954-04-26 Improvements in or relating to interlocks between electric switches and associated apparatus

Country Status (2)

Country Link
US (1) US2725437A (en)
GB (1) GB752494A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115558A (en) * 1960-11-29 1963-12-24 Sperry Rand Corp Door safety switch
US3235681A (en) * 1961-02-01 1966-02-15 Ite Circuit Breaker Ltd Mechanism for positioning circuit breaker in compartment
US3609014A (en) * 1970-06-10 1971-09-28 Kurz Arthur W Jun Electric remote control rear view mirror
US3810145A (en) * 1972-10-27 1974-05-07 Oak Industries Inc Door bolt with electric alarm
US3844518A (en) * 1973-04-18 1974-10-29 Westinghouse Electric Corp Leveling support structure for dishwasher
US5191971A (en) * 1991-04-05 1993-03-09 Lutron Electronics Co., Inc. Multi-position wall mountable control switch with tactile feedback linear actuator
GB201005539D0 (en) * 2010-04-01 2010-05-19 Black & Decker Inc Power tool
US20150059580A1 (en) * 2013-08-27 2015-03-05 Mriglobal Forensic air and surface sampler technology (fasst) collector
CN105321748B (en) * 2014-07-21 2019-09-10 伊顿智能动力有限公司 Mechanically and electrically signal interlocking gear for uninterruptible power supply

Also Published As

Publication number Publication date
US2725437A (en) 1955-11-29

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