FR987815A - metal prop for mines, with adjustment device - Google Patents

metal prop for mines, with adjustment device

Info

Publication number
FR987815A
FR987815A FR987815DA FR987815A FR 987815 A FR987815 A FR 987815A FR 987815D A FR987815D A FR 987815DA FR 987815 A FR987815 A FR 987815A
Authority
FR
France
Prior art keywords
mines
adjustment device
metal prop
prop
metal
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
Josef Brand
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 FR987815A publication Critical patent/FR987815A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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)
FR987815D 1949-06-04 1949-06-04 metal prop for mines, with adjustment device Expired FR987815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR987815T 1949-06-04

Publications (1)

Publication Number Publication Date
FR987815A true FR987815A (en) 1951-08-20

Family

ID=9539135

Family Applications (1)

Application Number Title Priority Date Filing Date
FR987815D Expired FR987815A (en) 1949-06-04 1949-06-04 metal prop for mines, with adjustment device

Country Status (1)

Country Link
FR (1) FR987815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114017075A (en) * 2021-10-11 2022-02-08 煤炭科学研究总院 Support column with rotatable footing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114017075A (en) * 2021-10-11 2022-02-08 煤炭科学研究总院 Support column with rotatable footing
CN114017075B (en) * 2021-10-11 2023-10-20 煤炭科学研究总院有限公司 Support column with rotatable footing

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