GB474783A - Improvements in electromagnetically-operated step-by-step automatic switches as usedin telephone systems - Google Patents

Improvements in electromagnetically-operated step-by-step automatic switches as usedin telephone systems

Info

Publication number
GB474783A
GB474783A GB1296536A GB1296536A GB474783A GB 474783 A GB474783 A GB 474783A GB 1296536 A GB1296536 A GB 1296536A GB 1296536 A GB1296536 A GB 1296536A GB 474783 A GB474783 A GB 474783A
Authority
GB
United Kingdom
Prior art keywords
usedin
electromagnetically
telephone systems
automatic switches
operated
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
GB1296536A
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.)
AUTOMATIC ELECTRIC CO Ltd
HARRY DERWENT SHARPE
ROBERT ALFRED COLLINGHAM
Original Assignee
AUTOMATIC ELECTRIC CO Ltd
HARRY DERWENT SHARPE
ROBERT ALFRED COLLINGHAM
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 AUTOMATIC ELECTRIC CO Ltd, HARRY DERWENT SHARPE, ROBERT ALFRED COLLINGHAM filed Critical AUTOMATIC ELECTRIC CO Ltd
Priority to GB1296536A priority Critical patent/GB474783A/en
Publication of GB474783A publication Critical patent/GB474783A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H63/00—Details of electrically-operated selector switches
    • H01H63/16—Driving arrangements for multi-position wipers
    • H01H63/18—Driving arrangements for multi-position wipers with step-by-step motion of wiper to a selector position
    • H01H63/20—Driving arrangements for multi-position wipers with step-by-step motion of wiper to a selector position using stepping magnet and ratchet

Landscapes

  • Toys (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

474,783. Ratchet gearing. AUTOMATIC ELECTRIC CO., Ltd., (in Liquidation), SHARPE, H. D., and COLLING- HAM, R. A. May 7, 1936, No. 12965. [Class 80 (iii)] [Also in Group XXXIX] A spring 16 in addition to urging the driving pawl 13 towards its guide 18 also acts to restore the armature of the driving magnet.
GB1296536A 1936-05-07 1936-05-07 Improvements in electromagnetically-operated step-by-step automatic switches as usedin telephone systems Expired GB474783A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1296536A GB474783A (en) 1936-05-07 1936-05-07 Improvements in electromagnetically-operated step-by-step automatic switches as usedin telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1296536A GB474783A (en) 1936-05-07 1936-05-07 Improvements in electromagnetically-operated step-by-step automatic switches as usedin telephone systems

Publications (1)

Publication Number Publication Date
GB474783A true GB474783A (en) 1937-11-08

Family

ID=10014346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296536A Expired GB474783A (en) 1936-05-07 1936-05-07 Improvements in electromagnetically-operated step-by-step automatic switches as usedin telephone systems

Country Status (1)

Country Link
GB (1) GB474783A (en)

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