GB955843A - Roof supporting device suitable for use in mines - Google Patents

Roof supporting device suitable for use in mines

Info

Publication number
GB955843A
GB955843A GB616561A GB616561A GB955843A GB 955843 A GB955843 A GB 955843A GB 616561 A GB616561 A GB 616561A GB 616561 A GB616561 A GB 616561A GB 955843 A GB955843 A GB 955843A
Authority
GB
United Kingdom
Prior art keywords
extension
mines
roof
supporting device
device suitable
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
GB616561A
Inventor
Peter Farr
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 GB616561A priority Critical patent/GB955843A/en
Publication of GB955843A publication Critical patent/GB955843A/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
    • E21D17/0206—Hydraulically operated extension devices
    • 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting 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)
  • Braking Arrangements (AREA)

Abstract

955,843. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. May 17, 1962 [Feb. 20, 1961], No. 6165/61. Heading E1E. An advancing mine roof support as disclosed in Specification 816,702 is provided with a pivoted cantilever extension 14 having a fluid-actuated jack 17, 18 with a wedge extension 19 for co-operation with a wedge member 23 carried by the roof beam 1. The cantilever may also carry an extension member adapted to be urged manually, mechanically or by means of an hydraulic division into contact with the roof.
GB616561A 1961-02-20 1961-02-20 Roof supporting device suitable for use in mines Expired GB955843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB616561A GB955843A (en) 1961-02-20 1961-02-20 Roof supporting device suitable for use in mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB616561A GB955843A (en) 1961-02-20 1961-02-20 Roof supporting device suitable for use in mines

Publications (1)

Publication Number Publication Date
GB955843A true GB955843A (en) 1964-04-22

Family

ID=9809605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB616561A Expired GB955843A (en) 1961-02-20 1961-02-20 Roof supporting device suitable for use in mines

Country Status (1)

Country Link
GB (1) GB955843A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562102A (en) * 2012-03-23 2012-07-11 郑州四维机电设备制造有限公司 Composite telescopic beam mechanism
CN103046944A (en) * 2012-12-26 2013-04-17 三一重型装备有限公司 Hydraulic support

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562102A (en) * 2012-03-23 2012-07-11 郑州四维机电设备制造有限公司 Composite telescopic beam mechanism
CN102562102B (en) * 2012-03-23 2014-09-03 卡特彼勒（郑州）有限公司 Composite telescopic beam mechanism
CN103046944A (en) * 2012-12-26 2013-04-17 三一重型装备有限公司 Hydraulic support
CN103046944B (en) * 2012-12-26 2015-04-22 三一重型装备有限公司 Hydraulic support

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