FR1401911A - Perfectionnements aux appareils de mines - Google Patents

Perfectionnements aux appareils de mines

Info

Publication number
FR1401911A
FR1401911A FR982646A FR982646A FR1401911A FR 1401911 A FR1401911 A FR 1401911A FR 982646 A FR982646 A FR 982646A FR 982646 A FR982646 A FR 982646A FR 1401911 A FR1401911 A FR 1401911A
Authority
FR
France
Prior art keywords
mining devices
mining
devices
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
FR982646A
Other languages
English (en)
Inventor
Douglas Herbert Hewlett Bolton
Frank Pawling
Michael Charles Potts
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
Priority claimed from GB28875/63A external-priority patent/GB1023125A/en
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to FR982646A priority Critical patent/FR1401911A/fr
Application granted granted Critical
Publication of FR1401911A publication Critical patent/FR1401911A/fr
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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

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)
FR982646A 1963-07-22 1964-07-22 Perfectionnements aux appareils de mines Expired FR1401911A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR982646A FR1401911A (fr) 1963-07-22 1964-07-22 Perfectionnements aux appareils de mines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB28875/63A GB1023125A (en) 1963-07-22 1963-07-22 Mining apparatus
FR982646A FR1401911A (fr) 1963-07-22 1964-07-22 Perfectionnements aux appareils de mines

Publications (1)

Publication Number Publication Date
FR1401911A true FR1401911A (fr) 1965-06-04

Family

ID=26209016

Family Applications (1)

Application Number Title Priority Date Filing Date
FR982646A Expired FR1401911A (fr) 1963-07-22 1964-07-22 Perfectionnements aux appareils de mines

Country Status (1)

Country Link
FR (1) FR1401911A (fr)

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