GB969928A - Roof support suitable for use in mines - Google Patents

Roof support suitable for use in mines

Info

Publication number
GB969928A
GB969928A GB4629561A GB4629561A GB969928A GB 969928 A GB969928 A GB 969928A GB 4629561 A GB4629561 A GB 4629561A GB 4629561 A GB4629561 A GB 4629561A GB 969928 A GB969928 A GB 969928A
Authority
GB
United Kingdom
Prior art keywords
roof
prop
force
support
mines
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
GB4629561A
Inventor
Richard Henry Bryan Winder
Michael Charles Charles Potts
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB4629561A priority Critical patent/GB969928A/en
Publication of GB969928A publication Critical patent/GB969928A/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

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)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

969,928. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. Dec. 20, 1962 [Dec. 27, 1961], No. 46295/61. Heading E1E. A roof support positionable between a roof surface and a floor surface comprises a surfaceengageable member 1 carrying a prop 2 actuatable to force the member 1 against the surface to support the roof, a second member 3 carrying a prop 5 actuatable to force the member 3 against the member 1 to force the latter against the surface to support the roof, and a double-acting hydraulic jack 6 to advance each member relative to the other when the prop of the member to be advanced is not supporting the roof and the prop of the other is doing so. The member 3 may slide in a cradle 4 carried by the member 1 when advanced relative to the member 1. A gearhead may be suspended from the member 1 or 3.
GB4629561A 1961-12-27 1961-12-27 Roof support suitable for use in mines Expired GB969928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4629561A GB969928A (en) 1961-12-27 1961-12-27 Roof support suitable for use in mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4629561A GB969928A (en) 1961-12-27 1961-12-27 Roof support suitable for use in mines

Publications (1)

Publication Number Publication Date
GB969928A true GB969928A (en) 1964-09-16

Family

ID=10440660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4629561A Expired GB969928A (en) 1961-12-27 1961-12-27 Roof support suitable for use in mines

Country Status (1)

Country Link
GB (1) GB969928A (en)

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