GB1012533A - Improvements relating to inductive signalling systems - Google Patents

Improvements relating to inductive signalling systems

Info

Publication number
GB1012533A
GB1012533A GB5?42/62A GB5426264A GB1012533A GB 1012533 A GB1012533 A GB 1012533A GB 5426264 A GB5426264 A GB 5426264A GB 1012533 A GB1012533 A GB 1012533A
Authority
GB
United Kingdom
Prior art keywords
frequency
switches
circuit
operated
remote
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
GB5?42/62A
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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Publication of GB1012533A publication Critical patent/GB1012533A/en
Expired legal-status Critical Current

Links

Classifications

    • H04B5/24—
    • 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 vehicle train, e.g. to release brake, to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, 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 vehicle train, e.g. to release brake, 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 vehicle train, e.g. to release brake, 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 vehicle train, e.g. to release brake, 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)
  • Safety Devices In Control Systems (AREA)

Abstract

1,012,533. Track apparatus. COMPAGNIE DES FREINS ET SIGNAUX WESTING- HOUSE. Feb. 6, 1964 [March 15, 1963], No. 5042/64. Heading B7N. [Also in Division H4] An inductive signalling system for selectively transmitting -signals of different frequencies graded in frequency in accordance with their order of priority, e.g. to a remote signal beacon or a railway locomotive, is provided with means for remote control of the frequency selecting circuits and is arranged so that in the event of failure of the frequency selecting arrangements the signal frequency is determined by a tuned circuit at the remote point and is a frequency which corresponds to a signal of higher or the highest priority. As shown in Fig. 2, resonant circuit C5, 5<SP>1</SP> is tuned to the frequency representing the highest priority and is coupled via an inductor 5 to a plurality of capacitors 4, to 4n which are selectively switched into circuit by switches I 1 to In as required. An amplifier 8 is coupled via windings 6, 7 to the circuit C5, 5<SP>1</SP> and oscillates at the frequency selected by the switches, or failing that, at the frequency determined by the circuit C5, 5<SP>1</SP>. The switches I 1 &c. control the control windings 12, to 12n of saturable reactors 3 1 to 3n. The arrangement is such that with switch I 1 operated all the capacitors are effectively in series and with switch In operated only capacitor 4n is connected, a transistor switch T being operated when any of the switches I 1 &c. is operated. Diodes 22 to 22n isolate the various circuits. In a modification the transistor switch is replaced by a further saturable reactor and the diodes 22 &c. are dispensed with. The switches I 1 &c. and battery S may be in a box at a control point remote from the switched circuits.
GB5?42/62A 1963-03-15 1964-02-06 Improvements relating to inductive signalling systems Expired GB1012533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR928181A FR1359360A (en) 1963-03-15 1963-03-15 Device for the selective remote control of high-frequency tuning circuits, in particular of equipment transmitting characteristic signals of various information

Publications (1)

Publication Number Publication Date
GB1012533A true GB1012533A (en) 1965-12-08

Family

ID=8799371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5?42/62A Expired GB1012533A (en) 1963-03-15 1964-02-06 Improvements relating to inductive signalling systems

Country Status (3)

Country Link
BE (1) BE645113A (en)
FR (1) FR1359360A (en)
GB (1) GB1012533A (en)

Also Published As

Publication number Publication date
FR1359360A (en) 1964-04-24
BE645113A (en) 1964-07-01

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