GB357634A - Improvements in or relating to electrical key switching devices - Google Patents

Improvements in or relating to electrical key switching devices

Info

Publication number
GB357634A
GB357634A GB1949230A GB1949230A GB357634A GB 357634 A GB357634 A GB 357634A GB 1949230 A GB1949230 A GB 1949230A GB 1949230 A GB1949230 A GB 1949230A GB 357634 A GB357634 A GB 357634A
Authority
GB
United Kingdom
Prior art keywords
spring
operating member
members
key
frame
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
GB1949230A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph 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
Priority to BE377217D priority Critical patent/BE377217A/xx
Application filed by Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Priority to GB1949230A priority patent/GB357634A/en
Priority to DEA60262D priority patent/DE583709C/en
Priority to FR711559D priority patent/FR711559A/en
Publication of GB357634A publication Critical patent/GB357634A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/50—Driving mechanisms with indexing or latching means, e.g. indexing by ball and spring; with means to ensure stopping at intermediate operative positions

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Telephone Set Structure (AREA)

Abstract

357,634. Snap-action switches. POLLAK, J. E., 20, Holborn, London.- (Associated Telephone & Telegraph Co. ; 1033, West Van Buren Street, Chicago, U.S.A.) June 26, 1930, No. 19492. [Class 38 (v).] In a switching key for controlling electrical circuits, such as in telephone systems, the key frame on which the contact spring - sets are mounted is composed of two independent and identical halves. The two frame parts are L- shaped stampings 1, 2 having shorter horizontal limbs 3, 4 provided with holes 24, 25 for mounting p u r - poses. The lower ends of the members 1, 2 are locked together by means of sheared tongues 9, 10 and the upper ends by screws 11. A bearing bush 14 for an operating member 8 is clamped between the upper ends of the parts 1, 2 and clearance slots are provided for the passage of the operating member and rollers 15 which engage spring extensions 19, 20, of spring-sets 6, 7 mounted in the members 1, 2. A spring-controlled plunger 21 having a V-shaped end, slides in recess between the frame members, and co-operates with a notch on the operating member 8 to hold the key in its central position. A handle 26 is screwed on to the member 8 and a washer 28 is provided so that the handle is free to rotate. A slotted escutcheon plate 5 is held in position by bolts passing through the holes 24, 25.
GB1949230A 1930-06-26 1930-06-26 Improvements in or relating to electrical key switching devices Expired GB357634A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE377217D BE377217A (en) 1930-06-26
GB1949230A GB357634A (en) 1930-06-26 1930-06-26 Improvements in or relating to electrical key switching devices
DEA60262D DE583709C (en) 1930-06-26 1931-01-10 Toggle switch for telephone purposes
FR711559D FR711559A (en) 1930-06-26 1931-02-19 Improvements to electrical switching devices with manipulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1949230A GB357634A (en) 1930-06-26 1930-06-26 Improvements in or relating to electrical key switching devices

Publications (1)

Publication Number Publication Date
GB357634A true GB357634A (en) 1931-09-28

Family

ID=10130255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1949230A Expired GB357634A (en) 1930-06-26 1930-06-26 Improvements in or relating to electrical key switching devices

Country Status (4)

Country Link
BE (1) BE377217A (en)
DE (1) DE583709C (en)
FR (1) FR711559A (en)
GB (1) GB357634A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611835A (en) * 1947-06-06 1952-09-23 Sr Donald P Mossman Lever switch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE959562C (en) * 1944-01-28 1957-03-07 Siemens Ag Push or toggle switch, especially for communications engineering equipment
US2497414A (en) * 1945-04-28 1950-02-14 Donald P Mossman Five position lever switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611835A (en) * 1947-06-06 1952-09-23 Sr Donald P Mossman Lever switch

Also Published As

Publication number Publication date
BE377217A (en)
DE583709C (en) 1933-09-08
FR711559A (en) 1931-09-12

Similar Documents

Publication Publication Date Title
GB522735A (en) Improvements in self-locking electric switches
US2624792A (en) Closure member operated switch
GB357634A (en) Improvements in or relating to electrical key switching devices
US1422447A (en) Switching key
GB546404A (en) Improvements in or relating to electromagnetic switches
GB1096914A (en) Electrical contact arrangement
US2677734A (en) Electric circuit breaker
GB178868A (en) Improvements in or relating to electric switches for telephone systems
GB837906A (en) Automatic electric cut-out
GB502943A (en) Arrangement of contacts for electrical switches
GB515180A (en) Improvements in key switching devices suitable for use in telephone systems
US2574549A (en) Electrical relay
GB382870A (en) An improved quick make and break electric tumbler switch
GB426968A (en) Improvements in electric switches suitable for use with overhead transmission lines
GB844428A (en) Improvements in or relating to electro-magnetic relays
GB701071A (en) Improvements in or relating to electromagnetic relays
GB176123A (en) Improvements in and relating to electric switches
GB809227A (en) Electromagnetic relay
GB721970A (en) Improvements in or relating to electromagnetic relays
GB548492A (en) Improvements relating to electromagnetic relays
GB1338792A (en) Electric switch assembly
GB546435A (en) Improvements connected with electrical switch-gear and contact arrangements therefor
GB1133628A (en) Contact spring assembly, more especially for relays
GB354031A (en) Improvements in or connected with electric switches
GB777267A (en) Improvements in or relating to snap action electric switches