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FR1180955A - Improvements to ceiling supports for underground mines - Google Patents

Improvements to ceiling supports for underground mines

Info

Publication number
FR1180955A
FR1180955A FR1180955DA FR1180955A FR 1180955 A FR1180955 A FR 1180955A FR 1180955D A FR1180955D A FR 1180955DA FR 1180955 A FR1180955 A FR 1180955A
Authority
FR
France
Prior art keywords
underground mines
ceiling supports
ceiling
supports
mines
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.)
Dobson Ltd W E & F
WE&F Dobson Ltd
Original Assignee
Dobson Ltd W E & F
WE&F Dobson 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 Dobson Ltd W E & F, WE&F Dobson Ltd filed Critical Dobson Ltd W E & F
Application granted granted Critical
Publication of FR1180955A publication Critical patent/FR1180955A/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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/066—Pivoted cantilever extensions therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1180955D 1956-08-18 1957-08-08 Improvements to ceiling supports for underground mines Expired FR1180955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1180955X 1956-08-18

Publications (1)

Publication Number Publication Date
FR1180955A true FR1180955A (en) 1959-06-10

Family

ID=10880300

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1180955D Expired FR1180955A (en) 1956-08-18 1957-08-08 Improvements to ceiling supports for underground mines

Country Status (1)

Country Link
FR (1) FR1180955A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127748A (en) * 1960-05-10 1964-04-07 Gullick Ltd Mine roof supports
US3163011A (en) * 1960-11-14 1964-12-29 Karl M Groetschel Connection for lagging irons
US3754402A (en) * 1970-06-26 1973-08-28 Fletcher Sutcliffe Wild Ltd Mine roof supports

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127748A (en) * 1960-05-10 1964-04-07 Gullick Ltd Mine roof supports
US3163011A (en) * 1960-11-14 1964-12-29 Karl M Groetschel Connection for lagging irons
US3754402A (en) * 1970-06-26 1973-08-28 Fletcher Sutcliffe Wild Ltd Mine roof supports

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