GB979801A - A roof bar for the roof support in mines - Google Patents

A roof bar for the roof support in mines

Info

Publication number
GB979801A
GB979801A GB1999261A GB1999261A GB979801A GB 979801 A GB979801 A GB 979801A GB 1999261 A GB1999261 A GB 1999261A GB 1999261 A GB1999261 A GB 1999261A GB 979801 A GB979801 A GB 979801A
Authority
GB
United Kingdom
Prior art keywords
roof
mines
bar
roof support
support
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
GB1999261A
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.)
ThyssenKrupp Technologies AG
Original Assignee
Thyssen Industrie AG
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 Thyssen Industrie AG filed Critical Thyssen Industrie AG
Publication of GB979801A publication Critical patent/GB979801A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated 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)
  • Piles And Underground Anchors (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

979,801. Mine roof support bars. THYSSEN INDUSTRIE G.m.b.H. June 2, 1961 [July 7, 1960], No. 19992/61. Heading E1E. A reversible articulated mine roof support bar 10 is provided at each end 11 with a guide surface 12, bore 13, annular segment 14, guide projection 15 and a guide pocket 16, interconnection being effected by wedges, see Fig. 4 (not shown).
GB1999261A 1960-07-07 1961-06-02 A roof bar for the roof support in mines Expired GB979801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET18638A DE1118720B (en) 1960-07-07 1960-07-07 Reversible joint cap for longwall construction in mining operations

Publications (1)

Publication Number Publication Date
GB979801A true GB979801A (en) 1965-01-06

Family

ID=7549017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1999261A Expired GB979801A (en) 1960-07-07 1961-06-02 A roof bar for the roof support in mines

Country Status (4)

Country Link
BE (1) BE603189A (en)
DE (1) DE1118720B (en)
GB (1) GB979801A (en)
NL (1) NL264085A (en)

Also Published As

Publication number Publication date
DE1118720B (en) 1961-12-07
NL264085A (en)
BE603189A (en) 1961-08-16

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