GB1222204A - Advancing mine roof supports - Google Patents

Advancing mine roof supports

Info

Publication number
GB1222204A
GB1222204A GB3850967A GB3850967A GB1222204A GB 1222204 A GB1222204 A GB 1222204A GB 3850967 A GB3850967 A GB 3850967A GB 3850967 A GB3850967 A GB 3850967A GB 1222204 A GB1222204 A GB 1222204A
Authority
GB
United Kingdom
Prior art keywords
mine roof
advancing
advance
advancing mine
july
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
GB3850967A
Inventor
Peter Frank Eastwood
Brian Worrall
Ronald Roy Reeves
Kenneth George Hancock
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 JP43050631A priority Critical patent/JPS4834641B1/ja
Priority to US746070A priority patent/US3525227A/en
Priority to DE19681758675 priority patent/DE1758675B1/en
Publication of GB1222204A publication Critical patent/GB1222204A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

1,222,204. Advancing mine roof supports. ELECTRO-HYDRAULICS Ltd. 19 July, 1968 [19 July, 1967; 21 Aug., 1967]; Nos. 33218/67 and 38509/67. Heading E1P. In an advancing mine roof support assembly comprising two frames each having an advancing ram 35 and being interconnected for simultaneous advance relative to an adjacent frame 44 guide surfaces 53B, 55 are provided to restrain the two interconnected frames from lateral misalignment over a substantial part of advance but to permit lateral movement over the final advance thereof. (For details of the pivotal link connection 38 between the rams 35 and the conveyor 30, Fig. 2 (not shown) should be referred to. In a modification, see Figs. 3, 4 and 5 (not shown), each frame is provided with a pair of longitudinally spaced guide surfaces and each ram is coupled to the conveyor anchorage by an alignment linkage.
GB3850967A 1967-07-19 1967-07-19 Advancing mine roof supports Expired GB1222204A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP43050631A JPS4834641B1 (en) 1967-07-19 1968-07-19
US746070A US3525227A (en) 1967-07-19 1968-07-19 Mine roof supports
DE19681758675 DE1758675B1 (en) 1967-07-19 1968-07-19 Migrating hydraulic longwall mining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3321867 1967-07-19

Publications (1)

Publication Number Publication Date
GB1222204A true GB1222204A (en) 1971-02-10

Family

ID=10350083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3850967A Expired GB1222204A (en) 1967-07-19 1967-07-19 Advancing mine roof supports

Country Status (1)

Country Link
GB (1) GB1222204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313698A (en) * 1979-02-07 1982-02-02 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Hydraulic shield-type support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313698A (en) * 1979-02-07 1982-02-02 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Hydraulic shield-type support

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