FR476774A - Improvements to alternating current signaling devices for railways - Google Patents

Improvements to alternating current signaling devices for railways

Info

Publication number
FR476774A
FR476774A FR476774DA FR476774A FR 476774 A FR476774 A FR 476774A FR 476774D A FR476774D A FR 476774DA FR 476774 A FR476774 A FR 476774A
Authority
FR
France
Prior art keywords
railways
alternating current
signaling devices
current signaling
devices
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
Other languages
French (fr)
Inventor
Bernard Hartley Peter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR476774A publication Critical patent/FR476774A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
FR476774D 1914-04-28 1914-12-15 Improvements to alternating current signaling devices for railways Expired FR476774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB476774X 1914-04-28

Publications (1)

Publication Number Publication Date
FR476774A true FR476774A (en) 1915-08-31

Family

ID=1514512

Family Applications (1)

Application Number Title Priority Date Filing Date
FR476774D Expired FR476774A (en) 1914-04-28 1914-12-15 Improvements to alternating current signaling devices for railways

Country Status (1)

Country Link
FR (1) FR476774A (en)

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