FR1013637A - Improvements made to machines for the extraction of coal and minerals - Google Patents

Improvements made to machines for the extraction of coal and minerals

Info

Publication number
FR1013637A
FR1013637A FR1013637DA FR1013637A FR 1013637 A FR1013637 A FR 1013637A FR 1013637D A FR1013637D A FR 1013637DA FR 1013637 A FR1013637 A FR 1013637A
Authority
FR
France
Prior art keywords
minerals
coal
machines
extraction
improvements made
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
John Maurice Towler
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.)
Mavor and Coulson Ltd
Original Assignee
Mavor and Coulson 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 Mavor and Coulson Ltd filed Critical Mavor and Coulson Ltd
Application granted granted Critical
Publication of FR1013637A publication Critical patent/FR1013637A/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
    • E21C29/02—Propulsion of machines for slitting or completely freeing the mineral from the seam by means on the machine exerting a thrust against fixed supports

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)
FR1013637D 1950-02-13 1950-02-13 Improvements made to machines for the extraction of coal and minerals Expired FR1013637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1013637T 1950-02-13

Publications (1)

Publication Number Publication Date
FR1013637A true FR1013637A (en) 1952-07-31

Family

ID=9571784

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1013637D Expired FR1013637A (en) 1950-02-13 1950-02-13 Improvements made to machines for the extraction of coal and minerals

Country Status (1)

Country Link
FR (1) FR1013637A (en)

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