GB861685A - Improvements relating to roof or wall supporting devices for use in coal-mining and like operations - Google Patents

Improvements relating to roof or wall supporting devices for use in coal-mining and like operations

Info

Publication number
GB861685A
GB861685A GB2433058A GB2433058A GB861685A GB 861685 A GB861685 A GB 861685A GB 2433058 A GB2433058 A GB 2433058A GB 2433058 A GB2433058 A GB 2433058A GB 861685 A GB861685 A GB 861685A
Authority
GB
United Kingdom
Prior art keywords
rod
shells
bolt
engage
plate
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
GB2433058A
Inventor
Murray Albert George Andrews
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.)
Bayliss Jones & Bayliss Ltd
Original Assignee
Bayliss Jones & Bayliss 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 Bayliss Jones & Bayliss Ltd filed Critical Bayliss Jones & Bayliss Ltd
Priority to GB2433058A priority Critical patent/GB861685A/en
Publication of GB861685A publication Critical patent/GB861685A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Finishing Walls (AREA)
  • Tents Or Canopies (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

861,685. Anchor-bolts &c. BAYLISS, JONES & BAYLISS Ltd. July 29, 1959 [July 29, 1958], No. 24330/58. Addition to 825,003. Class 89(1). An anchor-bolt for mine-roofs &c. and intended to be removable for re-use, comprises a tube 10, Fig. 1, having hinged thereto at one end expandable-shells 15, and secured thereto at the other end, a bearing-plate 20, a rod 11 movable - axially within the tube to engage wedge-surfaces 19 on the shells and move them apart to engage the walls of a bore-hole. To remove the bolt, a chain &c. fixed to the end 23 of rod 11 is pulled until a cross-pin 25 on the rod abuts the plate 20. The shells can now pivot towards each other as the bolt is drawn from the hole. In a modification, rod 11, Fig. 4, has screw-threads 27 engaging, a nut 29 fixed to plate 28, and extends through a spacing-sleeve 30 to engage, and be fixed to, a nut 31 on a handle 32 for turning rod 11 to expand or permit contraction of the shells,
GB2433058A 1958-07-29 1958-07-29 Improvements relating to roof or wall supporting devices for use in coal-mining and like operations Expired GB861685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2433058A GB861685A (en) 1958-07-29 1958-07-29 Improvements relating to roof or wall supporting devices for use in coal-mining and like operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2433058A GB861685A (en) 1958-07-29 1958-07-29 Improvements relating to roof or wall supporting devices for use in coal-mining and like operations

Publications (1)

Publication Number Publication Date
GB861685A true GB861685A (en) 1961-02-22

Family

ID=10210015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2433058A Expired GB861685A (en) 1958-07-29 1958-07-29 Improvements relating to roof or wall supporting devices for use in coal-mining and like operations

Country Status (1)

Country Link
GB (1) GB861685A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943817A (en) * 1974-11-25 1976-03-16 The Dayton Sure-Grip & Shore Company Split bolt
US3967455A (en) * 1975-02-03 1976-07-06 The United States Of America As Represented By The Secretary Of The Interior Controlled yielding rock bolt
WO2010104460A1 (en) * 2009-03-10 2010-09-16 Sandvik Intellectual Property Ab Friction bolt
EP4257795A1 (en) * 2022-04-08 2023-10-11 Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd A rock bolt

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943817A (en) * 1974-11-25 1976-03-16 The Dayton Sure-Grip & Shore Company Split bolt
US3967455A (en) * 1975-02-03 1976-07-06 The United States Of America As Represented By The Secretary Of The Interior Controlled yielding rock bolt
WO2010104460A1 (en) * 2009-03-10 2010-09-16 Sandvik Intellectual Property Ab Friction bolt
US8714883B2 (en) 2009-03-10 2014-05-06 Sandvik Intellectual Property Ab Friction bolt
EA021739B1 (en) * 2009-03-10 2015-08-31 Сандвик Интеллекчуал Проперти Аб Friction bolt
EP4257795A1 (en) * 2022-04-08 2023-10-11 Sandvik Mining and Construction Australia (Production/Supply) Pty Ltd A rock bolt

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