GB536310A - Improvements in or relating to electric motor controllers - Google Patents

Improvements in or relating to electric motor controllers

Info

Publication number
GB536310A
GB536310A GB254240A GB254240A GB536310A GB 536310 A GB536310 A GB 536310A GB 254240 A GB254240 A GB 254240A GB 254240 A GB254240 A GB 254240A GB 536310 A GB536310 A GB 536310A
Authority
GB
United Kingdom
Prior art keywords
electric motor
motor controllers
relating
drum
class
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
GB254240A
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.)
JOHN RUSSELL TAYLOR
Cutler Hammer Europe Ltd
Original Assignee
JOHN RUSSELL TAYLOR
Igranic Electric Co 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 JOHN RUSSELL TAYLOR, Igranic Electric Co Ltd filed Critical JOHN RUSSELL TAYLOR
Priority to GB254240A priority Critical patent/GB536310A/en
Publication of GB536310A publication Critical patent/GB536310A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays

Abstract

536,310. Electric motor controllers. IGRANIC ELECTRIC CO., Ltd., and TAYLOR, J. R. Feb. 9, 1940, No. 2542. [Class 38 (iii)] A controller comprises a drum and contactors assembled in the same casing. The arrangement is such that the drum prepares the motor circuit which is made and broken by the contactors controlled by auxiliary segments on the drum. Specification 280,563, [Class 38 (iii)], is referred to.
GB254240A 1940-02-09 1940-02-09 Improvements in or relating to electric motor controllers Expired GB536310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB254240A GB536310A (en) 1940-02-09 1940-02-09 Improvements in or relating to electric motor controllers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB254240A GB536310A (en) 1940-02-09 1940-02-09 Improvements in or relating to electric motor controllers

Publications (1)

Publication Number Publication Date
GB536310A true GB536310A (en) 1941-05-09

Family

ID=9741413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB254240A Expired GB536310A (en) 1940-02-09 1940-02-09 Improvements in or relating to electric motor controllers

Country Status (1)

Country Link
GB (1) GB536310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780762A (en) * 1954-09-15 1957-02-05 Clark Controller Co Reversing switch control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780762A (en) * 1954-09-15 1957-02-05 Clark Controller Co Reversing switch control

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