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FR1272244A - Support device for a mine roof - Google Patents

Support device for a mine roof

Info

Publication number
FR1272244A
FR1272244A FR842144A FR842144A FR1272244A FR 1272244 A FR1272244 A FR 1272244A FR 842144 A FR842144 A FR 842144A FR 842144 A FR842144 A FR 842144A FR 1272244 A FR1272244 A FR 1272244A
Authority
FR
France
Prior art keywords
support device
mine roof
mine
roof
support
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
FR842144A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
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 by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to FR842144A priority Critical patent/FR1272244A/en
Application granted granted Critical
Publication of FR1272244A publication Critical patent/FR1272244A/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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
FR842144A 1960-10-25 1960-10-25 Support device for a mine roof Expired FR1272244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR842144A FR1272244A (en) 1960-10-25 1960-10-25 Support device for a mine roof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR842144A FR1272244A (en) 1960-10-25 1960-10-25 Support device for a mine roof

Publications (1)

Publication Number Publication Date
FR1272244A true FR1272244A (en) 1961-09-22

Family

ID=8741440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR842144A Expired FR1272244A (en) 1960-10-25 1960-10-25 Support device for a mine roof

Country Status (1)

Country Link
FR (1) FR1272244A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320751A (en) * 1962-01-29 1967-05-23 Groetschel Karl Maria Support
US3448584A (en) * 1967-02-16 1969-06-10 Bergwerksverband Gmbh Hydraulic casing units for mine workings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320751A (en) * 1962-01-29 1967-05-23 Groetschel Karl Maria Support
US3448584A (en) * 1967-02-16 1969-06-10 Bergwerksverband Gmbh Hydraulic casing units for mine workings

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