GB539238A - Improvements in or relating to electro-magnetic switches - Google Patents

Improvements in or relating to electro-magnetic switches

Info

Publication number
GB539238A
GB539238A GB387040A GB387040A GB539238A GB 539238 A GB539238 A GB 539238A GB 387040 A GB387040 A GB 387040A GB 387040 A GB387040 A GB 387040A GB 539238 A GB539238 A GB 539238A
Authority
GB
United Kingdom
Prior art keywords
switch
pawls
toothed wheel
armature
electro
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
GB387040A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB387040A priority Critical patent/GB539238A/en
Publication of GB539238A publication Critical patent/GB539238A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers

Landscapes

  • Mechanisms For Operating Contacts (AREA)

Abstract

539,238. Electromagnetic switches. STANDARD TELEPHONES & CABLES, Ltd., and CHILDS, P. A. March 1, 1940, No. 3870. [Class 38 (v)] In an electromagnetic switch in which an electromagnet 7 drives a cam shaft 14 to operate a number of contact-spring sets in sequence, the armature 4 oscillates two pawls A, B which alternately engage and drive a toothed wheel 1 on the attraction and release of the armature respectively. In the form shown the pawls form part of a pivoted claw-shaped member 25 the pivot 26 of which is horizontally adjustable. The switch may be self interrupting, the interruption being caused by a toothed wheel on the shaft 14, Fig. 2 (not shown). An extra large tooth may stop the switch permanently in the home position.
GB387040A 1940-03-01 1940-03-01 Improvements in or relating to electro-magnetic switches Expired GB539238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB387040A GB539238A (en) 1940-03-01 1940-03-01 Improvements in or relating to electro-magnetic switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB387040A GB539238A (en) 1940-03-01 1940-03-01 Improvements in or relating to electro-magnetic switches

Publications (1)

Publication Number Publication Date
GB539238A true GB539238A (en) 1941-09-02

Family

ID=9766437

Family Applications (1)

Application Number Title Priority Date Filing Date
GB387040A Expired GB539238A (en) 1940-03-01 1940-03-01 Improvements in or relating to electro-magnetic switches

Country Status (1)

Country Link
GB (1) GB539238A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241532A (en) * 1963-05-01 1966-03-22 Ass Eng Ltd Distributor devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241532A (en) * 1963-05-01 1966-03-22 Ass Eng Ltd Distributor devices

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