GB1027286A - Improvements in or relating to self-advancing mine roof supports - Google Patents

Improvements in or relating to self-advancing mine roof supports

Info

Publication number
GB1027286A
GB1027286A GB522163A GB522163A GB1027286A GB 1027286 A GB1027286 A GB 1027286A GB 522163 A GB522163 A GB 522163A GB 522163 A GB522163 A GB 522163A GB 1027286 A GB1027286 A GB 1027286A
Authority
GB
United Kingdom
Prior art keywords
self
relating
mine roof
roof supports
advancing mine
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
GB522163A
Inventor
Roger Demant Lee
Robert Edwin Harold
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.)
Electro Hydraulics Ltd
Original Assignee
Electro Hydraulics 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 Electro Hydraulics Ltd filed Critical Electro Hydraulics Ltd
Priority to GB522163A priority Critical patent/GB1027286A/en
Publication of GB1027286A publication Critical patent/GB1027286A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

1,027,286. Mine roof supports. ELECTROHYDRAULICS Ltd. Feb. 8, 1963, No. 5221/63. Addition to 949,674. Heading E1E. In the self-advancing roof support of Specification 949,674 the double acting ram is replaced by a single acting ram and alternative means are used to move the anchorage.
GB522163A 1963-02-08 1963-02-08 Improvements in or relating to self-advancing mine roof supports Expired GB1027286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB522163A GB1027286A (en) 1963-02-08 1963-02-08 Improvements in or relating to self-advancing mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB522163A GB1027286A (en) 1963-02-08 1963-02-08 Improvements in or relating to self-advancing mine roof supports

Publications (1)

Publication Number Publication Date
GB1027286A true GB1027286A (en) 1966-04-27

Family

ID=9791991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB522163A Expired GB1027286A (en) 1963-02-08 1963-02-08 Improvements in or relating to self-advancing mine roof supports

Country Status (1)

Country Link
GB (1) GB1027286A (en)

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