GB2115048B - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
GB2115048B
GB2115048B GB08302271A GB8302271A GB2115048B GB 2115048 B GB2115048 B GB 2115048B GB 08302271 A GB08302271 A GB 08302271A GB 8302271 A GB8302271 A GB 8302271A GB 2115048 B GB2115048 B GB 2115048B
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
GB08302271A
Other versions
GB2115048A (en
GB8302271D0 (en
Inventor
John Cooke
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 GB08302271A priority Critical patent/GB2115048B/en
Publication of GB8302271D0 publication Critical patent/GB8302271D0/en
Publication of GB2115048A publication Critical patent/GB2115048A/en
Application granted granted Critical
Publication of GB2115048B publication Critical patent/GB2115048B/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)
  • Bridges Or Land Bridges (AREA)
GB08302271A 1982-02-02 1983-01-27 Mine roof supports Expired GB2115048B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08302271A GB2115048B (en) 1982-02-02 1983-01-27 Mine roof supports

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8202977 1982-02-02
GB08302271A GB2115048B (en) 1982-02-02 1983-01-27 Mine roof supports

Publications (3)

Publication Number Publication Date
GB8302271D0 GB8302271D0 (en) 1983-03-02
GB2115048A GB2115048A (en) 1983-09-01
GB2115048B true GB2115048B (en) 1985-08-29

Family

ID=26281884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08302271A Expired GB2115048B (en) 1982-02-02 1983-01-27 Mine roof supports

Country Status (1)

Country Link
GB (1) GB2115048B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182704B (en) * 1985-11-08 1989-01-18 Dobson Park Ind Mine roof supports
GB2192021B (en) * 1986-06-26 1990-03-21 Gullick Dobson Ltd A roof engaging structure for a mine roof support
GB2192659B (en) * 1986-07-15 1990-04-11 Gullick Dobson Ltd Mine roof support roof engaging device
GB2196371B (en) * 1986-10-15 1990-05-09 Gullick Dobson Ltd Mine roof supports
GB2220022B (en) * 1988-06-24 1992-06-10 Dowty Hucknall Limited Mine roof support
DD299446A5 (en) * 1989-05-11 1992-04-16 ��������@��@����������@��@��@����������@���������k�� MOBILE REMOVAL CHAMBER DEVICE

Also Published As

Publication number Publication date
GB2115048A (en) 1983-09-01
GB8302271D0 (en) 1983-03-02

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Legal Events

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