GB882801A - Improved extension shoe for a pit-prop - Google Patents

Improved extension shoe for a pit-prop

Info

Publication number
GB882801A
GB882801A GB22210/58A GB2221058A GB882801A GB 882801 A GB882801 A GB 882801A GB 22210/58 A GB22210/58 A GB 22210/58A GB 2221058 A GB2221058 A GB 2221058A GB 882801 A GB882801 A GB 882801A
Authority
GB
United Kingdom
Prior art keywords
prop
pit
shoe
extension shoe
improved extension
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
GB22210/58A
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.)
Becorit Grubenausbau GmbH
Original Assignee
Becorit Grubenausbau 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 Becorit Grubenausbau GmbH filed Critical Becorit Grubenausbau GmbH
Publication of GB882801A publication Critical patent/GB882801A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/52—Extensible units located above or below standard props
    • E21D15/526—Extensible units located above or below standard props for step-by-step extension of the prop

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)

Abstract

882,801. Mine roof supports. BECORIT GRUBENAUSBAN G.m.b.H. July 10, 1958 [Nov. 15, 1957], No. 22210/58. Class 20(2) A pit prop extension shoe 3 is provided with pairs of holes 4 to receive a U-shaped member 5 upon which a base plate 2 of a prop 1 rests. The shoe 3 is provided with an overhanging ledge 6 and a tapered channel 8 to receive a prop securing wedge 7.
GB22210/58A 1957-11-15 1958-07-10 Improved extension shoe for a pit-prop Expired GB882801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE882801X 1957-11-15

Publications (1)

Publication Number Publication Date
GB882801A true GB882801A (en) 1961-11-22

Family

ID=6831780

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22210/58A Expired GB882801A (en) 1957-11-15 1958-07-10 Improved extension shoe for a pit-prop

Country Status (1)

Country Link
GB (1) GB882801A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136849A (en) * 1983-03-23 1984-09-26 Hsb Hydraulik Schlauchtechnik Method and equipment for controlling the floor of a gallery
US4481748A (en) * 1980-09-10 1984-11-13 Harsco Corporation Shoring system and parts thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481748A (en) * 1980-09-10 1984-11-13 Harsco Corporation Shoring system and parts thereof
GB2136849A (en) * 1983-03-23 1984-09-26 Hsb Hydraulik Schlauchtechnik Method and equipment for controlling the floor of a gallery

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