GB915301A - Improvements in lever operated electric switches - Google Patents

Improvements in lever operated electric switches

Info

Publication number
GB915301A
GB915301A GB17960/58A GB1796058A GB915301A GB 915301 A GB915301 A GB 915301A GB 17960/58 A GB17960/58 A GB 17960/58A GB 1796058 A GB1796058 A GB 1796058A GB 915301 A GB915301 A GB 915301A
Authority
GB
United Kingdom
Prior art keywords
bars
spring
bush
rod
switch
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
GB17960/58A
Inventor
Edwin Greaves
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.)
DOWTY ELECTRICS Ltd
Original Assignee
DOWTY ELECTRICS 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 DOWTY ELECTRICS Ltd filed Critical DOWTY ELECTRICS Ltd
Priority to GB17960/58A priority Critical patent/GB915301A/en
Priority to US817210A priority patent/US2967919A/en
Publication of GB915301A publication Critical patent/GB915301A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms
    • H01H23/164—Driving mechanisms with rectilinearly movable member carrying the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/50—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
    • H01H3/503—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring making use of electromagnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/04—Cases; Covers
    • H01H23/06—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H23/065—Casings hermetically closed by a diaphragm through which passes an actuating member

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switches With Compound Operations (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

915,301. Snap-action switches; unlatching switches. DOWTY ELECTRICS Ltd. June 1, 1959 [June 5, 1958], No. 17960/58. Class 38 (5). A lever-operated switch has an electromagnetically-releasable latch for locking it in one position but may be released in emergency by twisting the lever about its longitudinal axis. An insulating base 2 carrying four sets of three acts 45, 46, 47, located in four grooves 48, is attached to a cover member 12 by four metal bars 4 having a pair of upper cross-bars 5 and a pair of intermediate cross-bars 6. A metallic bush 7 pivoted on trunnions 11 in bars 5 is operable by a rod 8 extending therethrough and having a flattened knob 17 at its upper end. Spring-loaded balls 15 at the sides of slot 14 in cover 12 give the bush 7 a snap-action. Pins 66 extending from bush 7 engage slots in two levers 63 pivoted at 64 in cross-bars 6 to move a transverse pin 62 coupling the four insulating carriers 51 so that metal contact-strips 49 thereon bridge contacts 45, 47 or 46, 47. The carriers 51 are pressed downwards by spring steel wires 53 engaging small projections 54. A platform 32 is supported from two bars 4 by members 33 and carries an electromagnet 35 having an armature 38 pivoted in platform 32, counterbalanced by weight 41 and urged by spring 42 to the position shown in Fig. 1 wherein it engages a groove 44 around the lower end of rod 8 to lock the lever against pivotal movement until electromagnet 35 is energized. In an emergency, however, the knob 17 may be rotated to turn rod 8 and cause a pin 27 to depress the armature 38 clear of groove 44 and allow the switch to be operated. Spring-loaded balls 29 urge the pin 27 to the desired one of its extreme positions. A spring- loaded plunger inside the part 25 of rod 8 enters a hole in bush 7 (Fig. 4, not shown) when the knob 17 is turned to the emergency position and prevents it being restored. A cylindrical member 19 sliding on rod 8 is spring-loaded to engage in a double-ended keyhole slot 22 in an upper cover 13 and prevent accidental operation of the switch. An interior rubber cover 74 fits around bush 7 to prevent dust and the like entering the switch which is enclosed by a metallic shell 3, and has a lower rubber cover 68 enclosing the connections to the switch contacts.
GB17960/58A 1958-06-05 1958-06-05 Improvements in lever operated electric switches Expired GB915301A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB17960/58A GB915301A (en) 1958-06-05 1958-06-05 Improvements in lever operated electric switches
US817210A US2967919A (en) 1958-06-05 1959-06-01 Lever operated electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17960/58A GB915301A (en) 1958-06-05 1958-06-05 Improvements in lever operated electric switches

Publications (1)

Publication Number Publication Date
GB915301A true GB915301A (en) 1963-01-09

Family

ID=10104231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17960/58A Expired GB915301A (en) 1958-06-05 1958-06-05 Improvements in lever operated electric switches

Country Status (2)

Country Link
US (1) US2967919A (en)
GB (1) GB915301A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137415A (en) * 1982-01-07 1984-10-03 Alco Electr Prod Lockable toggle switch
GB2325087A (en) * 1994-09-02 1998-11-11 Pdl Holdings Ltd Electric switch
CN112867294A (en) * 2019-11-12 2021-05-28 西门子股份公司 Explosion-proof pressure-resistant shell

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201551A (en) * 1962-03-23 1965-08-17 Moloney Electric Company Air-magnetic type circuit interrupter having planar blowout coils and primary conductor mounted puffer means
US4335287A (en) * 1981-03-16 1982-06-15 Eaton Corporation Lever seal for miniature sealed toggle switch
US5911318A (en) * 1996-12-16 1999-06-15 Sumitomo Wiring Systems, Ltd. Breaker device
US5990424A (en) * 1997-12-10 1999-11-23 Sumitomo Wiring Systems, Ltd. Breaker device
CN104240983A (en) * 2014-09-30 2014-12-24 绵阳雷迪创微电子科技有限公司 Improved travel switch structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734963A (en) * 1956-02-14 ardia
US2612049A (en) * 1949-10-15 1952-09-30 Honeywell Regulator Co Universal motion actuator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137415A (en) * 1982-01-07 1984-10-03 Alco Electr Prod Lockable toggle switch
GB2325087A (en) * 1994-09-02 1998-11-11 Pdl Holdings Ltd Electric switch
CN112867294A (en) * 2019-11-12 2021-05-28 西门子股份公司 Explosion-proof pressure-resistant shell

Also Published As

Publication number Publication date
US2967919A (en) 1961-01-10

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