GB1042396A - Roof support assemblies suitable for use in mines - Google Patents

Roof support assemblies suitable for use in mines

Info

Publication number
GB1042396A
GB1042396A GB2345464A GB2345464A GB1042396A GB 1042396 A GB1042396 A GB 1042396A GB 2345464 A GB2345464 A GB 2345464A GB 2345464 A GB2345464 A GB 2345464A GB 1042396 A GB1042396 A GB 1042396A
Authority
GB
United Kingdom
Prior art keywords
anchorage
jack
support
roof 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
GB2345464A
Inventor
Richard John Hollis
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 GB2345464A priority Critical patent/GB1042396A/en
Publication of GB1042396A publication Critical patent/GB1042396A/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
    • E21D23/0052—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

1,042,396. Conveyers. DOWTY MINING EQUIPMENT Ltd. June 3, 1965 [June 5, 1964], No. 23454/64. Heading B8A. A roof support 1 is connected to an anchorage such as a conveyer 5 by a flexible hauling element 17 associated with a pulley 8 mounted on the support or on the anchorage and rotatable by a fluid pressure operated jack 6 to wind up the hauling element and thereby advance the support up to the anchorage. The jack, Fig. 4 (not shown), comprises an outer housing 11 in which is journalled a shaft 15 having externally mounted thereon the pulley 8 and internally mounted thereon a sprocket 14 which meshes with a chain 13 connected to a piston 12 movable in a cylinder 9 in response to pressurization of the enclosing housing 11. Subsequent advancement of the conveyer 5 causes unwinding of the hauling element 17 to return the jack to its initial position.
GB2345464A 1964-06-05 1964-06-05 Roof support assemblies suitable for use in mines Expired GB1042396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2345464A GB1042396A (en) 1964-06-05 1964-06-05 Roof support assemblies suitable for use in mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2345464A GB1042396A (en) 1964-06-05 1964-06-05 Roof support assemblies suitable for use in mines

Publications (1)

Publication Number Publication Date
GB1042396A true GB1042396A (en) 1966-09-14

Family

ID=10195890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2345464A Expired GB1042396A (en) 1964-06-05 1964-06-05 Roof support assemblies suitable for use in mines

Country Status (1)

Country Link
GB (1) GB1042396A (en)

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