FR514575A - Railroad safety device - Google Patents

Railroad safety device

Info

Publication number
FR514575A
FR514575A FR514575A FR514575DA FR514575A FR 514575 A FR514575 A FR 514575A FR 514575 A FR514575 A FR 514575A FR 514575D A FR514575D A FR 514575DA FR 514575 A FR514575 A FR 514575A
Authority
FR
France
Prior art keywords
safety device
railroad safety
railroad
safety
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
FR514575A
Other languages
French (fr)
Inventor
Francois-Marie Jourdan
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.)
FRANCOIS MARIE JOURDAN
Original Assignee
FRANCOIS MARIE JOURDAN
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 FRANCOIS MARIE JOURDAN filed Critical FRANCOIS MARIE JOURDAN
Application granted granted Critical
Publication of FR514575A publication Critical patent/FR514575A/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
    • B61L3/04—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 mechanically

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR514575A 1920-04-28 1920-04-28 Railroad safety device Expired FR514575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR514575T 1920-04-28

Publications (1)

Publication Number Publication Date
FR514575A true FR514575A (en) 1921-03-14

Family

ID=8914248

Family Applications (1)

Application Number Title Priority Date Filing Date
FR514575A Expired FR514575A (en) 1920-04-28 1920-04-28 Railroad safety device

Country Status (1)

Country Link
FR (1) FR514575A (en)

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