FR3280E - Improvements to electrical switches that operate automatically at set intervals - Google Patents

Improvements to electrical switches that operate automatically at set intervals

Info

Publication number
FR3280E
FR3280E FR3280DA FR3280E FR 3280 E FR3280 E FR 3280E FR 3280D A FR3280D A FR 3280DA FR 3280 E FR3280 E FR 3280E
Authority
FR
France
Prior art keywords
electrical switches
set intervals
operate automatically
automatically
operate
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
Wilhelm Loewen
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 FR3280E publication Critical patent/FR3280E/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L29/00—Safety means for rail/road crossing traffic
    • B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
    • B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
    • B61L29/288—Wiring diagram of the signal control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR3280D 1902-02-27 1904-05-25 Improvements to electrical switches that operate automatically at set intervals Expired FR3280E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR319109T 1902-02-27
FR3280T 1904-05-25

Publications (1)

Publication Number Publication Date
FR3280E true FR3280E (en) 1904-10-05

Family

ID=1346311

Family Applications (1)

Application Number Title Priority Date Filing Date
FR3280D Expired FR3280E (en) 1902-02-27 1904-05-25 Improvements to electrical switches that operate automatically at set intervals

Country Status (1)

Country Link
FR (1) FR3280E (en)

Similar Documents

Publication Publication Date Title
FR3280E (en) Improvements to electrical switches that operate automatically at set intervals
FR319109A (en) Improvements to electrical switches that operate automatically at set intervals
FR325033A (en) Improvements to electrical switches
FR325188A (en) Improvements to electrical switches
FR333589A (en) Improvements to electrical switches
FR324026A (en) Improvements to trimming machines
FR324551A (en) Improvements to automatic electrical switches
FR320702A (en) Improvements to electrical controllers
FR324494A (en) Dual current fan
FR327966A (en) Capacity-compensated electrical pipes
FR347189A (en) Improvements to electrical switches
FR326439A (en) Improvements to electric clocks
FR327084A (en) Improvements to jockstrap
FR319188A (en) Improvements to velocipeds
FR320851A (en) Improvements to petticoats
CH26705A (en) Self-adjusting electrolytic switch
FR326929A (en) Improvements to controller-circuit breaker regulators
FR323387A (en) Improvements to electric arc lamps
FR357399A (en) Improvements to remote-controlled electrical circuit breakers
FR320214A (en) Improvements to electric accumulators
FR326767A (en) Improvements to devices with rolling electrical contacts
FR325368A (en) Improvements relating to electric lamps
CH24700A (en) Cable duct element
FR335293A (en) Improvements made to electric steam lamps
FR325481A (en) Improvements to electric lamps