GB866240A - Advancing roof support system, for mine faces - Google Patents

Advancing roof support system, for mine faces

Info

Publication number
GB866240A
GB866240A GB21055/57A GB2105557A GB866240A GB 866240 A GB866240 A GB 866240A GB 21055/57 A GB21055/57 A GB 21055/57A GB 2105557 A GB2105557 A GB 2105557A GB 866240 A GB866240 A GB 866240A
Authority
GB
United Kingdom
Prior art keywords
props
roof support
support system
july
piston rod
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
GB21055/57A
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB866240A publication Critical patent/GB866240A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
    • E21F13/086—Armoured conveyors 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)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

866,240. Mine roof supports. GEWERKSCHAFT EISENHUTTE WESTFALIA. July 3, 1957 [July 9, 1956], No. 21055/57. Class 20(2) An advancing mine roof support comprises two pairs of pit props 24, 25 and 22, 23, the former joined to a double acting cylinder 17 by leaf springs 26, 27 and the latter to a hollow piston rod 14 by similar springs 20, 21. Guide rod 13 which moves within the piston rod 14 is pivoted to a conveyer 11 at 12 and has a spring 29 and bearing plate 30. In operation one pair of props is released from roof engagement and air is introduced under pressure at one end of the cylinder 17 to act upon the piston 141 and advance the disengaged props.
GB21055/57A 1956-07-09 1957-07-03 Advancing roof support system, for mine faces Expired GB866240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE866240X 1956-07-09

Publications (1)

Publication Number Publication Date
GB866240A true GB866240A (en) 1961-04-26

Family

ID=6801978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21055/57A Expired GB866240A (en) 1956-07-09 1957-07-03 Advancing roof support system, for mine faces

Country Status (1)

Country Link
GB (1) GB866240A (en)

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