FR429027A - Electrical signal for underground - Google Patents

Electrical signal for underground

Info

Publication number
FR429027A
FR429027A FR429027DA FR429027A FR 429027 A FR429027 A FR 429027A FR 429027D A FR429027D A FR 429027DA FR 429027 A FR429027 A FR 429027A
Authority
FR
France
Prior art keywords
underground
electrical signal
electrical
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
Rene Bujon
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.)
RENE BUJON
SIGNAUX ELECTRIQUES POUR CHEMINS DE F Cie
Original Assignee
RENE BUJON
SIGNAUX ELECTRIQUES POUR CHEMINS DE F Cie
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 RENE BUJON, SIGNAUX ELECTRIQUES POUR CHEMINS DE F Cie filed Critical RENE BUJON
Application granted granted Critical
Publication of FR429027A publication Critical patent/FR429027A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1818—Daylight signals using mobile coloured screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR429027D 1911-04-28 1911-04-28 Electrical signal for underground Expired FR429027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR429027T 1911-04-28

Publications (1)

Publication Number Publication Date
FR429027A true FR429027A (en) 1911-09-13

Family

ID=1471384

Family Applications (1)

Application Number Title Priority Date Filing Date
FR429027D Expired FR429027A (en) 1911-04-28 1911-04-28 Electrical signal for underground

Country Status (1)

Country Link
FR (1) FR429027A (en)

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