GB1206283A - Improvements in or relating to mine roof supports - Google Patents

Improvements in or relating to mine roof supports

Info

Publication number
GB1206283A
GB1206283A GB34721/67A GB3472167A GB1206283A GB 1206283 A GB1206283 A GB 1206283A GB 34721/67 A GB34721/67 A GB 34721/67A GB 3472167 A GB3472167 A GB 3472167A GB 1206283 A GB1206283 A GB 1206283A
Authority
GB
United Kingdom
Prior art keywords
mine roof
roof
relating
roof supports
members
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
GB34721/67A
Inventor
Gerald Herbert Cotterill
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.)
HERBERT COTTERILL Ltd
Original Assignee
HERBERT COTTERILL 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 HERBERT COTTERILL Ltd filed Critical HERBERT COTTERILL Ltd
Priority to GB34721/67A priority Critical patent/GB1206283A/en
Priority to US739045A priority patent/US3488966A/en
Publication of GB1206283A publication Critical patent/GB1206283A/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
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Automatic Assembly (AREA)

Abstract

1,206,283. Mine roof supports. HERBERT COTTERILL Ltd. ,12 June, 1968 [28 July, 1967], No. 34721/67. Heading E1P. A chock or advancing mine roof support unit comprises a prop 12 articulated to telescopic roof-and floor-engaging members 11, ,10 respectively which interfit with clearance 16 in order to accommodate the forces set up by a roof convergence. The members 11, 10 are of circular or rectangular cross-section and have a seal 15 therebetween. For minor modifications involving the use of extension pieces, aligning means, stabilizing means and composite arrangements of chocks for relative advance the Specification and remaining drawings, (not shown), should be referred to.
GB34721/67A 1967-07-28 1967-07-28 Improvements in or relating to mine roof supports Expired GB1206283A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB34721/67A GB1206283A (en) 1967-07-28 1967-07-28 Improvements in or relating to mine roof supports
US739045A US3488966A (en) 1967-07-28 1968-06-21 Mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34721/67A GB1206283A (en) 1967-07-28 1967-07-28 Improvements in or relating to mine roof supports

Publications (1)

Publication Number Publication Date
GB1206283A true GB1206283A (en) 1970-09-23

Family

ID=10369158

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34721/67A Expired GB1206283A (en) 1967-07-28 1967-07-28 Improvements in or relating to mine roof supports

Country Status (2)

Country Link
US (1) US3488966A (en)
GB (1) GB1206283A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387311A (en) * 1972-03-24 1975-03-12 Gullick Dobson Ltd Mine roof supports

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899800A (en) * 1959-08-18 Apparatus for mine roof control
DE1132075B (en) * 1959-03-28 1962-06-28 Maschf Hydraulic longwall construction element
GB980581A (en) * 1960-03-17 1965-01-13 Wild A G & Co Ltd Improvements in hydraulic roof supports or chocks for mines
GB985401A (en) * 1961-05-13 1965-03-10 Rheinstahl Wanheim Gmbh Improvements in advanceable mine roof support assemblies
DE1236451B (en) * 1963-12-21 1967-03-16 Karl Maria Groetschel Dipl Ing Guide element that can be used between two adjacent expansion units
GB1061071A (en) * 1964-03-20 1967-03-08 Gullick Ltd Improvements in or relating to mine roof supports
GB1107379A (en) * 1964-08-11 1968-03-27 Gullick Ltd Improvements in or relating to pivotally supported members particularly of mine roof supports

Also Published As

Publication number Publication date
US3488966A (en) 1970-01-13

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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