GB1178119A - Temporary Extensible Cantilever for Mine Roof Supports - Google Patents

Temporary Extensible Cantilever for Mine Roof Supports

Info

Publication number
GB1178119A
GB1178119A GB1052266A GB1052266A GB1178119A GB 1178119 A GB1178119 A GB 1178119A GB 1052266 A GB1052266 A GB 1052266A GB 1052266 A GB1052266 A GB 1052266A GB 1178119 A GB1178119 A GB 1178119A
Authority
GB
United Kingdom
Prior art keywords
mine roof
temporary
roof supports
cantilever
march
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
GB1052266A
Inventor
Lewis Robert Bower
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.)
AG Wild and Co Ltd
Original Assignee
AG Wild and Co Ltd
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 AG Wild and Co Ltd filed Critical AG Wild and Co Ltd
Priority to GB1052266A priority Critical patent/GB1178119A/en
Publication of GB1178119A publication Critical patent/GB1178119A/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

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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

1,178,119. Advancing mine roof supports. A. G. WILD & CO. Ltd. 8 March, 1967 [10 March, 1966], No. 10522/66. Heading E1P. The roof bars 7 of an advancing mine roof support are provided with opposed grooves in which is mounted a slider 6 carrying three cantilever springs 8 which are interconnected by a canopy 9 and are adapted to be advanced by a pivoted hydraulic jack 14. The slider may be mounted in a single roof bar of forked ,end construction, see Fig. 5 (not shown), and the springs may be replaced by other arrangements for details of which the Specification should be referred to.
GB1052266A 1966-03-10 1966-03-10 Temporary Extensible Cantilever for Mine Roof Supports Expired GB1178119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1052266A GB1178119A (en) 1966-03-10 1966-03-10 Temporary Extensible Cantilever for Mine Roof Supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1052266A GB1178119A (en) 1966-03-10 1966-03-10 Temporary Extensible Cantilever for Mine Roof Supports

Publications (1)

Publication Number Publication Date
GB1178119A true GB1178119A (en) 1970-01-21

Family

ID=9969381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1052266A Expired GB1178119A (en) 1966-03-10 1966-03-10 Temporary Extensible Cantilever for Mine Roof Supports

Country Status (1)

Country Link
GB (1) GB1178119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3120867A1 (en) * 1981-05-26 1982-12-16 Johannes 4300 Essen Winkler Extendable front cantilever for hydraulic self-advancing support assemblies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3120867A1 (en) * 1981-05-26 1982-12-16 Johannes 4300 Essen Winkler Extendable front cantilever for hydraulic self-advancing support assemblies

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