FR1096391A - advanced mine prop - Google Patents

advanced mine prop

Info

Publication number
FR1096391A
FR1096391A FR1096391DA FR1096391A FR 1096391 A FR1096391 A FR 1096391A FR 1096391D A FR1096391D A FR 1096391DA FR 1096391 A FR1096391 A FR 1096391A
Authority
FR
France
Prior art keywords
mine prop
advanced mine
advanced
prop
mine
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.)
DOWTY AUTO UNITS Ltd
Original Assignee
DOWTY AUTO UNITS 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 DOWTY AUTO UNITS Ltd filed Critical DOWTY AUTO UNITS Ltd
Application granted granted Critical
Publication of FR1096391A publication Critical patent/FR1096391A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/517—Extension elements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Actuator (AREA)
  • Press Drives And Press Lines (AREA)
FR1096391D 1953-02-25 1954-02-24 advanced mine prop Expired FR1096391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5311/53A GB741150A (en) 1953-02-25 1953-02-25 Improvements in mine roof supports

Publications (1)

Publication Number Publication Date
FR1096391A true FR1096391A (en) 1955-06-20

Family

ID=9793715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1096391D Expired FR1096391A (en) 1953-02-25 1954-02-24 advanced mine prop

Country Status (6)

Country Link
US (1) US2857125A (en)
BE (1) BE526791A (en)
DE (1) DE946528C (en)
FR (1) FR1096391A (en)
GB (1) GB741150A (en)
NL (1) NL185384B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023436B (en) * 1955-11-24 1958-01-30 Hermann Schwarz Kommanditgesel Hydraulic pit ram

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094209B (en) * 1954-09-10 1960-12-08 Rheinstahl Gmbh Wanheim Pit stamp
BE553228A (en) * 1955-12-08
DE1062654B (en) * 1956-04-03 1959-08-06 Kloeckner Bergbau Viktor Icker Hydraulic pit ram
DE1081397B (en) * 1956-06-25 1960-05-12 Becorit Grubenausbau Gmbh Hydraulic pit ram
GB845918A (en) * 1957-02-06 1960-08-24 Dowty Mining Equipment Ltd Improvements in fluid pressure relief valves
GB894292A (en) * 1957-07-30 1962-04-18 Mastabar Mining Equip Co Ltd Improvements in or relating to hydraulic props, particularly pit props
GB948255A (en) * 1959-03-03 1964-01-29 Dobson Ltd W E & F Improvements in or relating to hydraulic pit props
FR1280684A (en) * 1960-11-22 1962-01-08 Sagem hydraulic prop
US3830456A (en) * 1972-12-22 1974-08-20 Fletcher J & Co Mining apparatus
FR2505925A1 (en) * 1981-05-12 1982-11-19 Alsace Mines Potasse MECHANICAL DEVICE FOR CONNECTING HEAD BETWEEN HEAD OR PEDESTAL HEAD AND PACKAGE OR HAT FOR HOLDING BATTERIES
CN102562100A (en) * 2010-12-13 2012-07-11 襄樊禹仁机电液压科技有限公司 Automatic exhausting single hydraulic prop

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289904C (en) *
GB636568A (en) * 1953-07-20 1950-05-03 George Herbert Dowty Improvements in pit props and other telescopic struts
FR1009955A (en) * 1948-07-15 1952-06-05 Mine gallery support
GB658998A (en) * 1948-09-01 1951-10-17 Dowty Equipment Ltd Improvements in mine roof supports

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023436B (en) * 1955-11-24 1958-01-30 Hermann Schwarz Kommanditgesel Hydraulic pit ram

Also Published As

Publication number Publication date
DE946528C (en) 1956-08-02
US2857125A (en) 1958-10-21
NL185384B (en) 1958-04-15
BE526791A (en)
GB741150A (en) 1955-11-30

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