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FR1136432A - Variable height extraction machine - Google Patents

Variable height extraction machine

Info

Publication number
FR1136432A
FR1136432A FR1136432DA FR1136432A FR 1136432 A FR1136432 A FR 1136432A FR 1136432D A FR1136432D A FR 1136432DA FR 1136432 A FR1136432 A FR 1136432A
Authority
FR
France
Prior art keywords
variable height
extraction machine
height extraction
machine
variable
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.)
Goodman Manufacturing Co LP
Original Assignee
Goodman Manufacturing Co LP
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 Goodman Manufacturing Co LP filed Critical Goodman Manufacturing Co LP
Application granted granted Critical
Publication of FR1136432A publication Critical patent/FR1136432A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
    • E21C27/12—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
    • E21C27/124—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with rotatable cutters provided with breaking-down members

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)
FR1136432D 1954-09-27 1955-09-27 Variable height extraction machine Expired FR1136432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1136432XA 1954-09-27 1954-09-27

Publications (1)

Publication Number Publication Date
FR1136432A true FR1136432A (en) 1957-05-14

Family

ID=22350677

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1136432D Expired FR1136432A (en) 1954-09-27 1955-09-27 Variable height extraction machine

Country Status (1)

Country Link
FR (1) FR1136432A (en)

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