FR404488A - Automatic signal system for railways - Google Patents

Automatic signal system for railways

Info

Publication number
FR404488A
FR404488A FR404488DA FR404488A FR 404488 A FR404488 A FR 404488A FR 404488D A FR404488D A FR 404488DA FR 404488 A FR404488 A FR 404488A
Authority
FR
France
Prior art keywords
railways
signal system
automatic signal
automatic
signal
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
Harold Duncan Patterson
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 FR404488A publication Critical patent/FR404488A/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)
FR404488D 1908-06-27 1909-06-26 Automatic signal system for railways Expired FR404488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US404488XA 1908-06-27 1908-06-27

Publications (1)

Publication Number Publication Date
FR404488A true FR404488A (en) 1909-12-02

Family

ID=1449043

Family Applications (1)

Application Number Title Priority Date Filing Date
FR404488D Expired FR404488A (en) 1908-06-27 1909-06-26 Automatic signal system for railways

Country Status (1)

Country Link
FR (1) FR404488A (en)

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