FR66647E - Mine props - Google Patents

Mine props

Info

Publication number
FR66647E
FR66647E FR66647DA FR66647E FR 66647 E FR66647 E FR 66647E FR 66647D A FR66647D A FR 66647DA FR 66647 E FR66647 E FR 66647E
Authority
FR
France
Prior art keywords
mine props
props
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
Jacques Perrin
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 FR66647E publication Critical patent/FR66647E/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/082—Advancing mechanisms forming parts of the roof supports acting solely on the elements of the supports

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)
FR66647D 1954-12-07 1954-12-07 Mine props Expired FR66647E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR66647T 1954-12-07

Publications (1)

Publication Number Publication Date
FR66647E true FR66647E (en) 1957-06-18

Family

ID=8698956

Family Applications (1)

Application Number Title Priority Date Filing Date
FR66647D Expired FR66647E (en) 1954-12-07 1954-12-07 Mine props

Country Status (1)

Country Link
FR (1) FR66647E (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156038B (en) * 1959-11-24 1963-10-24 Houilleres Bassin Du Nord Striding support frame for the expansion of underground spaces, especially longwall mining
DE1240020B (en) * 1963-08-31 1967-05-11 Konrad Grebe Expansion team for moving longwall mining
FR2415739A1 (en) * 1978-01-30 1979-08-24 Gewerk Eisenhuette Westfalia SEPARABLE ARTICULATED COUPLING DEVICE FOR BOTTOM MINING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156038B (en) * 1959-11-24 1963-10-24 Houilleres Bassin Du Nord Striding support frame for the expansion of underground spaces, especially longwall mining
DE1240020B (en) * 1963-08-31 1967-05-11 Konrad Grebe Expansion team for moving longwall mining
FR2415739A1 (en) * 1978-01-30 1979-08-24 Gewerk Eisenhuette Westfalia SEPARABLE ARTICULATED COUPLING DEVICE FOR BOTTOM MINING

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