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GB982024A - Improvements relating to advancing mine roof supports - Google Patents

Improvements relating to advancing mine roof supports

Info

Publication number
GB982024A
GB982024A GB2445960A GB2445960A GB982024A GB 982024 A GB982024 A GB 982024A GB 2445960 A GB2445960 A GB 2445960A GB 2445960 A GB2445960 A GB 2445960A GB 982024 A GB982024 A GB 982024A
Authority
GB
United Kingdom
Prior art keywords
mine roof
advancing mine
roof supports
improvements relating
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
GB2445960A
Inventor
Cyril Treharne Jones
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB2445960A priority Critical patent/GB982024A/en
Publication of GB982024A publication Critical patent/GB982024A/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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/085—Advancing mechanisms forming parts of the roof supports acting on a conveyor or a guide for the mining machine

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)
  • Framework For Endless Conveyors (AREA)

Abstract

982,024. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. July 13, 1961 [July 13, 1960 No. 24459/60. Heading E1E. An advancing mine roof support comprises a prop assembly 1, 2, 3 which is pivotally connected to a double-acting hydraulic jack 24, 25 by pivoted links 8, 9, 15, 21 arranged as shown, the jack being in turn pivoted to the coal conveyer 29.
GB2445960A 1960-07-13 1960-07-13 Improvements relating to advancing mine roof supports Expired GB982024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2445960A GB982024A (en) 1960-07-13 1960-07-13 Improvements relating to advancing mine roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2445960A GB982024A (en) 1960-07-13 1960-07-13 Improvements relating to advancing mine roof supports

Publications (1)

Publication Number Publication Date
GB982024A true GB982024A (en) 1965-02-03

Family

ID=10212044

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2445960A Expired GB982024A (en) 1960-07-13 1960-07-13 Improvements relating to advancing mine roof supports

Country Status (1)

Country Link
GB (1) GB982024A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448625A1 (en) * 1979-02-07 1980-09-05 Hemscheidt Maschf Hermann PUSHING APPARATUS FOR HYDRAULIC BOOM BRACKETS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448625A1 (en) * 1979-02-07 1980-09-05 Hemscheidt Maschf Hermann PUSHING APPARATUS FOR HYDRAULIC BOOM BRACKETS
US4313698A (en) * 1979-02-07 1982-02-02 Hermann Hemscheidt Maschinenfabrik Gmbh & Co. Hydraulic shield-type support

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