GB1011067A - Roof support assembly suitable for use in mines - Google Patents

Roof support assembly suitable for use in mines

Info

Publication number
GB1011067A
GB1011067A GB25092/62A GB2509262A GB1011067A GB 1011067 A GB1011067 A GB 1011067A GB 25092/62 A GB25092/62 A GB 25092/62A GB 2509262 A GB2509262 A GB 2509262A GB 1011067 A GB1011067 A GB 1011067A
Authority
GB
United Kingdom
Prior art keywords
roof support
mines
support assembly
assembly suitable
june
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
GB25092/62A
Inventor
Michael Charles Potts
Wesley Horace Barrett
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 GB25092/62A priority Critical patent/GB1011067A/en
Priority to US290814A priority patent/US3243162A/en
Publication of GB1011067A publication Critical patent/GB1011067A/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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

1,011,067. Hydraulic Jacks. DOWTY MINING EQUIPMENT Ltd. June 20, 1963 [June 29, 1962], No. 25092/62. Heading B8J. [Also in Division E1] The piston-rod 7 of an hydraulic jack 4 for advancing mine roof supports carries two pulleys 11, 17 arranged as shown, which by means of suitably anchored ropes or chains are adapted to advance the roof support two increments for each incremental extension of the jack.
GB25092/62A 1962-06-29 1962-06-29 Roof support assembly suitable for use in mines Expired GB1011067A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB25092/62A GB1011067A (en) 1962-06-29 1962-06-29 Roof support assembly suitable for use in mines
US290814A US3243162A (en) 1962-06-29 1963-06-26 Roof support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25092/62A GB1011067A (en) 1962-06-29 1962-06-29 Roof support assembly suitable for use in mines

Publications (1)

Publication Number Publication Date
GB1011067A true GB1011067A (en) 1965-11-24

Family

ID=10222085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25092/62A Expired GB1011067A (en) 1962-06-29 1962-06-29 Roof support assembly suitable for use in mines

Country Status (2)

Country Link
US (1) US3243162A (en)
GB (1) GB1011067A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010805A (en) * 1974-04-29 1977-03-08 Kelley Leon O Flow through brush cutter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415014A (en) * 1945-11-16 1947-01-28 Herman E Luebbers Tractor attachment mechanism
US2796233A (en) * 1954-09-10 1957-06-18 Stanford Marie Taft Stump pulling device
US2859022A (en) * 1955-04-04 1958-11-04 Dowty Mining Equipment Ltd Hydraulic roof supports and conveyor feed jacks
US3051448A (en) * 1960-05-16 1962-08-28 William H Pletta Marine snubber
US3078075A (en) * 1960-06-03 1963-02-19 Gen Am Transport Line puller

Also Published As

Publication number Publication date
US3243162A (en) 1966-03-29

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