GB1029244A - Improvements in mine-roof supports - Google Patents

Improvements in mine-roof supports

Info

Publication number
GB1029244A
GB1029244A GB2462161A GB2462161A GB1029244A GB 1029244 A GB1029244 A GB 1029244A GB 2462161 A GB2462161 A GB 2462161A GB 2462161 A GB2462161 A GB 2462161A GB 1029244 A GB1029244 A GB 1029244A
Authority
GB
United Kingdom
Prior art keywords
roof
bars
contacting
units
unit
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
GB2462161A
Inventor
John Dunbar Kibble
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents 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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB2462161A priority Critical patent/GB1029244A/en
Publication of GB1029244A publication Critical patent/GB1029244A/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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0017—Pile type 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
    • E21D23/0047—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
    • 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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
  • Framework For Endless Conveyors (AREA)

Abstract

1,029,244. Advancing mine roof supports. COAL INDUSTRY (PATENTS) Ltd. July 9, 1962 [July 7, 1961], No. 24621/61. Heading E1E In an advancing mine roof support assembly comprising leading and trailing support units 1, 2, each with a roof-contacting part, a roofcontacting member 5 pivotally mounted on one of said parts and slidably mounted on the other, and means to advance the units relatively by alternate longitudinal extensions and contractions of the assembly, the said part on the unit 2 has two spaced parallel bend-proof roof-contacting bars 6 interconnected to form a slide-way to receive a part of the member 5. The unit has two such bars 6 interconnected by a hinge pin 7 for the member 5 which is non-bend-proof. The bars 6 have cantilever portions 6a. The units 1, 2 are movably attached to a conveyer drive unit 3 by double-acting rams 4 and mount conventional roof-contacting bars 11.
GB2462161A 1961-07-07 1961-07-07 Improvements in mine-roof supports Expired GB1029244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2462161A GB1029244A (en) 1961-07-07 1961-07-07 Improvements in mine-roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2462161A GB1029244A (en) 1961-07-07 1961-07-07 Improvements in mine-roof supports

Publications (1)

Publication Number Publication Date
GB1029244A true GB1029244A (en) 1966-05-11

Family

ID=10214580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2462161A Expired GB1029244A (en) 1961-07-07 1961-07-07 Improvements in mine-roof supports

Country Status (1)

Country Link
GB (1) GB1029244A (en)

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