GB159260A - Improvements in means for controlling the operative field of magnets - Google Patents

Improvements in means for controlling the operative field of magnets

Info

Publication number
GB159260A
GB159260A GB2826019A GB2826019A GB159260A GB 159260 A GB159260 A GB 159260A GB 2826019 A GB2826019 A GB 2826019A GB 2826019 A GB2826019 A GB 2826019A GB 159260 A GB159260 A GB 159260A
Authority
GB
United Kingdom
Prior art keywords
electromagnet
permanent magnet
magnets
controlling
operative field
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
GB2826019A
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.)
National Safety Appliance Co
Original Assignee
National Safety Appliance 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
Application filed by National Safety Appliance Co filed Critical National Safety Appliance Co
Priority to GB2826019A priority Critical patent/GB159260A/en
Publication of GB159260A publication Critical patent/GB159260A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)

Abstract

159,260. Goold, L. W., (National Safety Appliance Co.). Nov. 14, 1919. Drawings to Specification. Electromagnets.-A polarized electromagnet is symmetrically arranged in relation to the poles of a permanent magnet in order to vary the field of the latter. The entire function of the field created by the polarized electromagnetic member excludes the production of any mechanical movement. The electromagnet is preferably stronger than the permanent magnet and may be below or beyond its pole-pieces. The latter arrangement is described for use on a railway track, the circuit to the electromagnet being controlled by passing vehicles. The electromagnet serves to restore the magnetism of the permanent magnet.
GB2826019A 1919-11-14 1919-11-14 Improvements in means for controlling the operative field of magnets Expired GB159260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2826019A GB159260A (en) 1919-11-14 1919-11-14 Improvements in means for controlling the operative field of magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2826019A GB159260A (en) 1919-11-14 1919-11-14 Improvements in means for controlling the operative field of magnets

Publications (1)

Publication Number Publication Date
GB159260A true GB159260A (en) 1921-02-14

Family

ID=10272822

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2826019A Expired GB159260A (en) 1919-11-14 1919-11-14 Improvements in means for controlling the operative field of magnets

Country Status (1)

Country Link
GB (1) GB159260A (en)

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