GB1295075A - - Google Patents

Info

Publication number
GB1295075A
GB1295075A GB1784969A GB1295075DA GB1295075A GB 1295075 A GB1295075 A GB 1295075A GB 1784969 A GB1784969 A GB 1784969A GB 1295075D A GB1295075D A GB 1295075DA GB 1295075 A GB1295075 A GB 1295075A
Authority
GB
United Kingdom
Prior art keywords
props
piston
attached
cylinder
advancing
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
GB1784969A
Other languages
English (en)
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 filed Critical
Publication of GB1295075A publication Critical patent/GB1295075A/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
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
    • 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
    • E21D23/0418—Positioning devices and stabilizing means for the props

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB1784969A 1969-04-08 1969-04-08 Expired GB1295075A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1784969 1969-04-08

Publications (1)

Publication Number Publication Date
GB1295075A true GB1295075A (es) 1972-11-01

Family

ID=10102300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1784969A Expired GB1295075A (es) 1969-04-08 1969-04-08

Country Status (5)

Country Link
US (1) US3646768A (es)
AU (1) AU1304770A (es)
DE (1) DE2014372C3 (es)
FR (1) FR2043018A5 (es)
GB (1) GB1295075A (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117687A (en) * 1976-12-29 1978-10-03 Fletcher Sutcliffe Wild Limited Mine roof supports

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030308A (en) * 1976-05-21 1977-06-21 Fletcher Sutcliffe Wild Limited Mine roof supports
US4664563A (en) * 1984-09-21 1987-05-12 Basf Corporation Rigid polyurethane foams with constant or slightly decreasing strain with an increasing stress in compression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1001412A (en) * 1960-09-15 1965-08-18 Dowty Mining Equipment Ltd Roof supports suitable for use in mines
DE1160389B (de) * 1961-08-21 1964-01-02 Mannesmann Ag Setzvorrichtung fuer Grubenstempel
GB1038952A (en) * 1961-11-21 1966-08-17 Dobson Ltd W E & F Improvements in or relating to mine roof supports
GB1091601A (en) * 1964-01-24 1967-11-22 Dowty Mining Equipment Ltd Roof supports suitable for use in a mine
GB1107379A (en) * 1964-08-11 1968-03-27 Gullick Ltd Improvements in or relating to pivotally supported members particularly of mine roof supports
GB1115763A (en) * 1964-12-23 1968-05-29 Gullick Ltd Improvements in or relating to mine roof and like supports
DE1533762A1 (de) * 1967-06-07 1970-01-22 Rheinstahi Wanheim Gmbh Maschinell rueckbares Ausbauelement,insbesondere Ausbaubock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4117687A (en) * 1976-12-29 1978-10-03 Fletcher Sutcliffe Wild Limited Mine roof supports

Also Published As

Publication number Publication date
US3646768A (en) 1972-03-07
FR2043018A5 (es) 1971-02-12
DE2014372C3 (de) 1973-01-04
AU1304770A (en) 1970-03-25
DE2014372A1 (es) 1970-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees