FR1214273A - mine prop - Google Patents

mine prop

Info

Publication number
FR1214273A
FR1214273A FR1214273DA FR1214273A FR 1214273 A FR1214273 A FR 1214273A FR 1214273D A FR1214273D A FR 1214273DA FR 1214273 A FR1214273 A FR 1214273A
Authority
FR
France
Prior art keywords
mine prop
prop
mine
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
Helmut Heese
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 filed Critical
Application granted granted Critical
Publication of FR1214273A publication Critical patent/FR1214273A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
    • E21D15/581—Devices for setting props or chocks in which the props are pre- loaded

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1214273D 1957-10-24 1958-10-24 mine prop Expired FR1214273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1214273X 1957-10-24

Publications (1)

Publication Number Publication Date
FR1214273A true FR1214273A (en) 1960-04-07

Family

ID=7733442

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1214273D Expired FR1214273A (en) 1957-10-24 1958-10-24 mine prop

Country Status (1)

Country Link
FR (1) FR1214273A (en)

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