GB991585A - Mine roof support assembly - Google Patents

Mine roof support assembly

Info

Publication number
GB991585A
GB991585A GB4860262A GB4860262A GB991585A GB 991585 A GB991585 A GB 991585A GB 4860262 A GB4860262 A GB 4860262A GB 4860262 A GB4860262 A GB 4860262A GB 991585 A GB991585 A GB 991585A
Authority
GB
United Kingdom
Prior art keywords
supports
roof
shield
bars
support assembly
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
GB4860262A
Inventor
Aubrey Mason Griffiths
Alec Hodkinson
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 GB4860262A priority Critical patent/GB991585A/en
Publication of GB991585A publication Critical patent/GB991585A/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
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags

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)
  • Chain Conveyers (AREA)

Abstract

991,585. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. Dec. 20, 1963 [Dec. 24, 1962], No. 48602/62. Headings E1E and E1F. In a mine roof support assembly wherein supports 14, Fig. 3, each comprising a prop 15 and a roof bar 16 are advanced relatively to each other by means not shown, a shield, which may comprise a plate suspended from a rod 19, is provided between each pair of supports 14 to prevent falling roof material coming between the supports, the shield having a sliding connection with each roof bar to accommodate the advancing movements. The rod 19 shown slidably engages single chain links hanging in eyebolts 17 on the bars 16. In a modification the shield, Fig. 1, comprises bars 12 welded to chains 11 slidably suspended on rods 7 carried by the roof bars 5. The supports may be advanced by a fluid-pressure jack connected between them, or between the supports and a conveyer.
GB4860262A 1962-12-24 1962-12-24 Mine roof support assembly Expired GB991585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4860262A GB991585A (en) 1962-12-24 1962-12-24 Mine roof support assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4860262A GB991585A (en) 1962-12-24 1962-12-24 Mine roof support assembly

Publications (1)

Publication Number Publication Date
GB991585A true GB991585A (en) 1965-05-12

Family

ID=10449209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4860262A Expired GB991585A (en) 1962-12-24 1962-12-24 Mine roof support assembly

Country Status (1)

Country Link
GB (1) GB991585A (en)

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