GB722352A - Progressive mine adit timbering - Google Patents

Progressive mine adit timbering

Info

Publication number
GB722352A
GB722352A GB13230/52A GB1323052A GB722352A GB 722352 A GB722352 A GB 722352A GB 13230/52 A GB13230/52 A GB 13230/52A GB 1323052 A GB1323052 A GB 1323052A GB 722352 A GB722352 A GB 722352A
Authority
GB
United Kingdom
Prior art keywords
prop
head
cap
released
timbering
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
GB13230/52A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB722352A publication Critical patent/GB722352A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00Caps for supporting mine roofs
    • E21D17/02Cantilever extension or similar protecting devices
    • E21D17/08Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082Cap joints for obtaining a coal-face free of pit-props of sliding type

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)
  • Supports For Pipes And Cables (AREA)

Abstract

722,352. Mine roof supports. BUSCHMANN, A. May 26, 1952 [Nov. 3, 1951], No. 13230/52. Class 20 (2). A mine roof is supported by rows of props 1 having prop heads 4 through which a cap 8 is movable, as the coal face advances, when cutters 9 are released, whereupon the props can be released consecutively by means of their prop locks 3 and moved along the cap nearer to the coal face. There may be a key between the top of the cap and each prop head, which when released frees the head from the roof. The prop head rests on the lower flanges of the cap by means of adjustable flanges 17. The prop head engages the prop 1 by a curved part 11 and the head and prop are held in engagement by projections 12, 14 and a cable 15.
GB13230/52A 1951-11-03 1952-05-26 Progressive mine adit timbering Expired GB722352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE722352X 1951-11-03

Publications (1)

Publication Number Publication Date
GB722352A true GB722352A (en) 1955-01-26

Family

ID=6631121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13230/52A Expired GB722352A (en) 1951-11-03 1952-05-26 Progressive mine adit timbering

Country Status (1)

Country Link
GB (1) GB722352A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077741A (en) * 1956-12-03 1963-02-19 Haarmann Arnold Shiftable mine prop arrangement and process for shifting mine props
CN106050281A (en) * 2016-08-10 2016-10-26 中国矿业大学(北京) Anchor-cable box girder truss structure for coal mine tunnel roof support and supporting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077741A (en) * 1956-12-03 1963-02-19 Haarmann Arnold Shiftable mine prop arrangement and process for shifting mine props
CN106050281A (en) * 2016-08-10 2016-10-26 中国矿业大学(北京) Anchor-cable box girder truss structure for coal mine tunnel roof support and supporting method

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