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FR1146274A - Improvements to shearers - Google Patents

Improvements to shearers

Info

Publication number
FR1146274A
FR1146274A FR1146274DA FR1146274A FR 1146274 A FR1146274 A FR 1146274A FR 1146274D A FR1146274D A FR 1146274DA FR 1146274 A FR1146274 A FR 1146274A
Authority
FR
France
Prior art keywords
shearers
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)
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.)
Sagem SA
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Application granted granted Critical
Publication of FR1146274A publication Critical patent/FR1146274A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
    • E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
    • E21C29/06—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains anchored at one or both ends to the mine working face
    • E21C29/10—Cable or chain co-operating with a winch or the like on the machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1146274D 1956-03-26 1956-03-26 Improvements to shearers Expired FR1146274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1146274T 1956-03-26

Publications (1)

Publication Number Publication Date
FR1146274A true FR1146274A (en) 1957-11-08

Family

ID=9645269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1146274D Expired FR1146274A (en) 1956-03-26 1956-03-26 Improvements to shearers

Country Status (1)

Country Link
FR (1) FR1146274A (en)

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