FR360571A - Device for automatically opening and closing the shut-off valves of ventilation shafts used at the same time for extraction - Google Patents

Device for automatically opening and closing the shut-off valves of ventilation shafts used at the same time for extraction

Info

Publication number
FR360571A
FR360571A FR360571DA FR360571A FR 360571 A FR360571 A FR 360571A FR 360571D A FR360571D A FR 360571DA FR 360571 A FR360571 A FR 360571A
Authority
FR
France
Prior art keywords
shut
valves
extraction
closing
same time
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
Carl Tesch
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.)
CARL TESCH
Original Assignee
CARL TESCH
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 CARL TESCH filed Critical CARL TESCH
Application granted granted Critical
Publication of FR360571A publication Critical patent/FR360571A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/16—Shaft covers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR360571D 1905-12-18 1905-12-18 Device for automatically opening and closing the shut-off valves of ventilation shafts used at the same time for extraction Expired FR360571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR360571T 1905-12-18

Publications (1)

Publication Number Publication Date
FR360571A true FR360571A (en) 1906-04-26

Family

ID=1408260

Family Applications (1)

Application Number Title Priority Date Filing Date
FR360571D Expired FR360571A (en) 1905-12-18 1905-12-18 Device for automatically opening and closing the shut-off valves of ventilation shafts used at the same time for extraction

Country Status (1)

Country Link
FR (1) FR360571A (en)

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