FR1395103A - Advancement roof support device for mine galleries - Google Patents

Advancement roof support device for mine galleries

Info

Publication number
FR1395103A
FR1395103A FR969764A FR969764A FR1395103A FR 1395103 A FR1395103 A FR 1395103A FR 969764 A FR969764 A FR 969764A FR 969764 A FR969764 A FR 969764A FR 1395103 A FR1395103 A FR 1395103A
Authority
FR
France
Prior art keywords
advancement
support device
roof support
mine galleries
galleries
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
FR969764A
Other languages
French (fr)
Inventor
Thomas Desmond Hudson Andrews
John Kammerer Harding
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 Technical Developments Ltd
Original Assignee
Dowty Technical Developments 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 GB13356/63A external-priority patent/GB1016061A/en
Application filed by Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to FR969764A priority Critical patent/FR1395103A/en
Application granted granted Critical
Publication of FR1395103A publication Critical patent/FR1395103A/en
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)
FR969764A 1963-04-04 1964-04-03 Advancement roof support device for mine galleries Expired FR1395103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR969764A FR1395103A (en) 1963-04-04 1964-04-03 Advancement roof support device for mine galleries

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB13356/63A GB1016061A (en) 1963-04-04 1963-04-04 Mine roof support
FR969764A FR1395103A (en) 1963-04-04 1964-04-03 Advancement roof support device for mine galleries

Publications (1)

Publication Number Publication Date
FR1395103A true FR1395103A (en) 1965-04-09

Family

ID=26206847

Family Applications (1)

Application Number Title Priority Date Filing Date
FR969764A Expired FR1395103A (en) 1963-04-04 1964-04-03 Advancement roof support device for mine galleries

Country Status (1)

Country Link
FR (1) FR1395103A (en)

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