GB2019476B - Sprag plates for mine roof supports - Google Patents

Sprag plates for mine roof supports

Info

Publication number
GB2019476B
GB2019476B GB7913866A GB7913866A GB2019476B GB 2019476 B GB2019476 B GB 2019476B GB 7913866 A GB7913866 A GB 7913866A GB 7913866 A GB7913866 A GB 7913866A GB 2019476 B GB2019476 B GB 2019476B
Authority
GB
United Kingdom
Prior art keywords
sprag
plates
mine roof
roof supports
supports
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
GB7913866A
Other versions
GB2019476A (en
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.)
Huwood Ltd
Original Assignee
Huwood 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 Huwood Ltd filed Critical Huwood Ltd
Priority to GB7913866A priority Critical patent/GB2019476B/en
Publication of GB2019476A publication Critical patent/GB2019476A/en
Application granted granted Critical
Publication of GB2019476B publication Critical patent/GB2019476B/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)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
GB7913866A 1978-04-20 1979-04-20 Sprag plates for mine roof supports Expired GB2019476B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7913866A GB2019476B (en) 1978-04-20 1979-04-20 Sprag plates for mine roof supports

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1563778 1978-04-20
GB7913866A GB2019476B (en) 1978-04-20 1979-04-20 Sprag plates for mine roof supports

Publications (2)

Publication Number Publication Date
GB2019476A GB2019476A (en) 1979-10-31
GB2019476B true GB2019476B (en) 1982-06-09

Family

ID=26251442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7913866A Expired GB2019476B (en) 1978-04-20 1979-04-20 Sprag plates for mine roof supports

Country Status (1)

Country Link
GB (1) GB2019476B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523207B1 (en) * 1982-04-29 1988-04-01 Bergwerksverband Gmbh DEVICE FOR COMPRESSING EMBankments
FR2576058B1 (en) * 1985-01-15 1987-12-31 Bennes Marrel WALKING SUPPORT PILE, ESPECIALLY FOR MINES
DE3833842C1 (en) * 1988-10-05 1989-08-31 Bochumer Eisenhuette Heintzmann Gmbh & Co Kg, 4630 Bochum, De Powered support assembly

Also Published As

Publication number Publication date
GB2019476A (en) 1979-10-31

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Legal Events

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