FR1151822A - Extension support, in particular for caps of retaining frames of mine galleries - Google Patents

Extension support, in particular for caps of retaining frames of mine galleries

Info

Publication number
FR1151822A
FR1151822A FR1151822DA FR1151822A FR 1151822 A FR1151822 A FR 1151822A FR 1151822D A FR1151822D A FR 1151822DA FR 1151822 A FR1151822 A FR 1151822A
Authority
FR
France
Prior art keywords
caps
extension support
retaining frames
mine galleries
galleries
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
Paul Weil
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 FR1151822A publication Critical patent/FR1151822A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/03—Brackets for roof-supporting bars
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/06—Cantilever extension or similar protecting devices for use in drifting galleries

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)
FR1151822D 1956-06-23 1956-06-23 Extension support, in particular for caps of retaining frames of mine galleries Expired FR1151822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1151822T 1956-06-23

Publications (1)

Publication Number Publication Date
FR1151822A true FR1151822A (en) 1958-02-06

Family

ID=9648058

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1151822D Expired FR1151822A (en) 1956-06-23 1956-06-23 Extension support, in particular for caps of retaining frames of mine galleries

Country Status (1)

Country Link
FR (1) FR1151822A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097494A (en) * 1958-07-29 1963-07-16 Supporting framework for a mine gallery or shaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097494A (en) * 1958-07-29 1963-07-16 Supporting framework for a mine gallery or shaft

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