FR377922A - Improvements made to semaphores - Google Patents

Improvements made to semaphores

Info

Publication number
FR377922A
FR377922A FR377922DA FR377922A FR 377922 A FR377922 A FR 377922A FR 377922D A FR377922D A FR 377922DA FR 377922 A FR377922 A FR 377922A
Authority
FR
France
Prior art keywords
semaphores
improvements made
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
Harry Mc Lean Abernethy
George Lewis Weiss
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.)
HARRY MC LEAN ABERNETHY
Original Assignee
HARRY MC LEAN ABERNETHY
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 HARRY MC LEAN ABERNETHY filed Critical HARRY MC LEAN ABERNETHY
Application granted granted Critical
Publication of FR377922A publication Critical patent/FR377922A/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
    • B61L5/14—Form signals, e.g. semaphore arms
    • B61L5/16—Local operating mechanisms for form signals
    • B61L5/161—Local operating mechanisms for form signals using electromotive driving means
    • B61L5/163—Driving mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR377922D 1907-04-23 1907-04-23 Improvements made to semaphores Expired FR377922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR377922T 1907-04-23

Publications (1)

Publication Number Publication Date
FR377922A true FR377922A (en) 1907-09-19

Family

ID=1424309

Family Applications (1)

Application Number Title Priority Date Filing Date
FR377922D Expired FR377922A (en) 1907-04-23 1907-04-23 Improvements made to semaphores

Country Status (1)

Country Link
FR (1) FR377922A (en)

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