GB2182704B - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB2182704B
GB2182704B GB08527635A GB8527635A GB2182704B GB 2182704 B GB2182704 B GB 2182704B GB 08527635 A GB08527635 A GB 08527635A GB 8527635 A GB8527635 A GB 8527635A GB 2182704 B GB2182704 B GB 2182704B
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof supports
supports
mine
roof
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
GB08527635A
Other versions
GB8527635D0 (en
GB2182704A (en
Inventor
Jeffrey James Mccann
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.)
Joy Global Industries Ltd
Original Assignee
Dobson Park Industries 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 Park Industries Ltd filed Critical Dobson Park Industries Ltd
Priority to GB08527635A priority Critical patent/GB2182704B/en
Publication of GB8527635D0 publication Critical patent/GB8527635D0/en
Publication of GB2182704A publication Critical patent/GB2182704A/en
Application granted granted Critical
Publication of GB2182704B publication Critical patent/GB2182704B/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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB08527635A 1985-11-08 1985-11-08 Mine roof supports Expired GB2182704B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08527635A GB2182704B (en) 1985-11-08 1985-11-08 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08527635A GB2182704B (en) 1985-11-08 1985-11-08 Mine roof supports

Publications (3)

Publication Number Publication Date
GB8527635D0 GB8527635D0 (en) 1985-12-11
GB2182704A GB2182704A (en) 1987-05-20
GB2182704B true GB2182704B (en) 1989-01-18

Family

ID=10587964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08527635A Expired GB2182704B (en) 1985-11-08 1985-11-08 Mine roof supports

Country Status (1)

Country Link
GB (1) GB2182704B (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB943139A (en) * 1960-12-24 1963-11-27 Rheinstahl Wanheim Gmbh Improvements in self-advancing mine-roof support units
GB985401A (en) * 1961-05-13 1965-03-10 Rheinstahl Wanheim Gmbh Improvements in advanceable mine roof support assemblies
DE2727414C2 (en) * 1977-06-18 1979-07-12 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Pre-pledge device for hydraulic support
AT360935B (en) * 1979-05-03 1981-02-10 Voest Alpine Ag EXTENSION BLOCK
GB2048355A (en) * 1979-05-08 1980-12-10 Gewerk Eisenhuette Westfalia Mine roof supports
GB2052615B (en) * 1979-06-21 1983-03-16 Hemscheidt Maschf Hermann Hydraulic roof-support frame
GB2087964B (en) * 1980-11-26 1984-03-21 Dowty Mining Equipment Ltd Roof support for use in mines
DE3107209A1 (en) * 1981-02-26 1982-09-09 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen CAP ACTUATOR
DE3115984A1 (en) * 1981-04-22 1982-11-25 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen CAP ACTUATOR
GB2115048B (en) * 1982-02-02 1985-08-29 Dobson Park Ind Mine roof supports

Also Published As

Publication number Publication date
GB8527635D0 (en) 1985-12-11
GB2182704A (en) 1987-05-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941108