GB548123A - Improvements in electric motor control systems - Google Patents

Improvements in electric motor control systems

Info

Publication number
GB548123A
GB548123A GB632341A GB632341A GB548123A GB 548123 A GB548123 A GB 548123A GB 632341 A GB632341 A GB 632341A GB 632341 A GB632341 A GB 632341A GB 548123 A GB548123 A GB 548123A
Authority
GB
United Kingdom
Prior art keywords
hand lever
pilot motor
electric motor
motor control
control systems
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
GB632341A
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.)
English Electric Co Ltd
Original Assignee
English 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB632341A priority Critical patent/GB548123A/en
Publication of GB548123A publication Critical patent/GB548123A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/02—Control systems without regulation, i.e. without retroactive action
    • B66B1/06—Control systems without regulation, i.e. without retroactive action electric
    • B66B1/12—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, located at a control station for direct control movements, e.g. electric mining-hoist control systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Control Devices (AREA)

Abstract

548,123. Controllers. ENGLISH ELECTRIC CO., Ltd., and DOLAN, H. May 16, 1941, No. 6323. Drawings to Specification. [Class 38 (iii)] The controller of a mine winding Ward- Leonard system is operated either by a pilot motor or by a hand lever, similar to the arrangement disclosed in Specification 509,261. According to the present invention a change-over lever is used to clutch selectively the controller to the pilot motor or hand lever and correspondingly to clutch brake means to either a solenoid device or to a hand lever. In order to start the pilot motor, push-buttons can be arranged so that two, at different levels, have to be pressed within a predetermined time interval of each other.
GB632341A 1941-05-16 1941-05-16 Improvements in electric motor control systems Expired GB548123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB632341A GB548123A (en) 1941-05-16 1941-05-16 Improvements in electric motor control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB632341A GB548123A (en) 1941-05-16 1941-05-16 Improvements in electric motor control systems

Publications (1)

Publication Number Publication Date
GB548123A true GB548123A (en) 1942-09-25

Family

ID=9812404

Family Applications (1)

Application Number Title Priority Date Filing Date
GB632341A Expired GB548123A (en) 1941-05-16 1941-05-16 Improvements in electric motor control systems

Country Status (1)

Country Link
GB (1) GB548123A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455870A (en) * 1944-01-05 1948-12-07 Gen Electric Coupling
US4201922A (en) * 1976-12-13 1980-05-06 The Boeing Company Automatic start/manual start interlock system for a gas turbine engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455870A (en) * 1944-01-05 1948-12-07 Gen Electric Coupling
US4201922A (en) * 1976-12-13 1980-05-06 The Boeing Company Automatic start/manual start interlock system for a gas turbine engine

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