FR902730A - Extraction apparatus mechanically moved along the working face for coal and other minerals - Google Patents

Extraction apparatus mechanically moved along the working face for coal and other minerals

Info

Publication number
FR902730A
FR902730A FR902730DA FR902730A FR 902730 A FR902730 A FR 902730A FR 902730D A FR902730D A FR 902730DA FR 902730 A FR902730 A FR 902730A
Authority
FR
France
Prior art keywords
minerals
coal
moved along
working face
extraction apparatus
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.)
FLOTTMANN AG
Original Assignee
FLOTTMANN AG
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 FLOTTMANN AG filed Critical FLOTTMANN AG
Application granted granted Critical
Publication of FR902730A publication Critical patent/FR902730A/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
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/46—Mineral freed by means not involving slitting by percussed planing means

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)
FR902730D 1943-03-09 1944-03-15 Extraction apparatus mechanically moved along the working face for coal and other minerals Expired FR902730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE902730X 1943-03-09

Publications (1)

Publication Number Publication Date
FR902730A true FR902730A (en) 1945-09-11

Family

ID=6861180

Family Applications (1)

Application Number Title Priority Date Filing Date
FR902730D Expired FR902730A (en) 1943-03-09 1944-03-15 Extraction apparatus mechanically moved along the working face for coal and other minerals

Country Status (1)

Country Link
FR (1) FR902730A (en)

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