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GB1363003A - Mine roof support bar assemblies - Google Patents

Mine roof support bar assemblies

Info

Publication number
GB1363003A
GB1363003A GB4187571A GB4187571A GB1363003A GB 1363003 A GB1363003 A GB 1363003A GB 4187571 A GB4187571 A GB 4187571A GB 4187571 A GB4187571 A GB 4187571A GB 1363003 A GB1363003 A GB 1363003A
Authority
GB
United Kingdom
Prior art keywords
roof support
mine roof
support bar
bar assemblies
bars
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
GB4187571A
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 GB1363003A publication Critical patent/GB1363003A/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
    • E21D17/03—Brackets for roof-supporting bars
    • 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
    • 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
    • E21D17/0213—Assembling devices for pivoting caps upwardly

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)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

1363003 Mine roof support bars GEWERKSCHAFT EISENHUTTE WESTFALIA 8 Sept 1971 [11 Sept 1970] 41875/71 Heading E1E In a mine roof support bar assembly comprising two bars 10, 11 pivoted to-gether at 12 each bar is provided with stop means 15, 16 respectively to prevent on engagement the bars from being relatively inclined in a downwards direction when in use. A space 17 between the stop means and the pivot 12 may accommodate wedging means for setting the assembly against the roof.
GB4187571A 1970-09-11 1971-09-08 Mine roof support bar assemblies Expired GB1363003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7033932 1970-09-11

Publications (1)

Publication Number Publication Date
GB1363003A true GB1363003A (en) 1974-08-14

Family

ID=6614305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4187571A Expired GB1363003A (en) 1970-09-11 1971-09-08 Mine roof support bar assemblies

Country Status (1)

Country Link
GB (1) GB1363003A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee