FR1139400A - Laying screw for mine props - Google Patents

Laying screw for mine props

Info

Publication number
FR1139400A
FR1139400A FR1139400DA FR1139400A FR 1139400 A FR1139400 A FR 1139400A FR 1139400D A FR1139400D A FR 1139400DA FR 1139400 A FR1139400 A FR 1139400A
Authority
FR
France
Prior art keywords
mine props
laying screw
laying
screw
props
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
Alexander Schmidt
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 FR1139400A publication Critical patent/FR1139400A/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
    • E21D15/58—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)
FR1139400D 1955-11-18 1955-11-18 Laying screw for mine props Expired FR1139400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1139400T 1955-11-18

Publications (1)

Publication Number Publication Date
FR1139400A true FR1139400A (en) 1957-06-28

Family

ID=9641705

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1139400D Expired FR1139400A (en) 1955-11-18 1955-11-18 Laying screw for mine props

Country Status (1)

Country Link
FR (1) FR1139400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080045B (en) * 1958-02-19 1960-04-21 Kronprinz Ag Extension piece for hydraulic pit rams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080045B (en) * 1958-02-19 1960-04-21 Kronprinz Ag Extension piece for hydraulic pit rams

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