GB957071A - Advancing roof-supporting device - Google Patents

Advancing roof-supporting device

Info

Publication number
GB957071A
GB957071A GB420461A GB420461A GB957071A GB 957071 A GB957071 A GB 957071A GB 420461 A GB420461 A GB 420461A GB 420461 A GB420461 A GB 420461A GB 957071 A GB957071 A GB 957071A
Authority
GB
United Kingdom
Prior art keywords
advancing
supporting device
feb
frames
self
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
GB420461A
Inventor
Wesley Horace Barrett
Peter Farr
Dennis Henry Cannon
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 GB420461A priority Critical patent/GB957071A/en
Publication of GB957071A publication Critical patent/GB957071A/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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
    • 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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Framework For Endless Conveyors (AREA)

Abstract

957,071. Self-advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. Jan. 18, 1962 [Feb. 3, 1961; Feb. 20, 1961], Nos. 4204/61 and 6167/61. Heading E1E. A self-advancing mine roof support assembly comprises two frames 1, 2 pivotally connected to a lever 9 which in turn is pivoted to a doubleacting hydraulic jack 12 for advancing the conveyer 15. The frames are additionally pivotally connected to a prop 17 by arms 18, 19 and may be connected together by members which positively locate each frame at the end of its advance. Specification 957,072 is referred to.
GB420461A 1961-02-03 1961-02-03 Advancing roof-supporting device Expired GB957071A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB420461A GB957071A (en) 1961-02-03 1961-02-03 Advancing roof-supporting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB420461A GB957071A (en) 1961-02-03 1961-02-03 Advancing roof-supporting device

Publications (1)

Publication Number Publication Date
GB957071A true GB957071A (en) 1964-05-06

Family

ID=9772693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB420461A Expired GB957071A (en) 1961-02-03 1961-02-03 Advancing roof-supporting device

Country Status (1)

Country Link
GB (1) GB957071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855808A (en) * 1973-09-12 1974-12-24 G Alacchi Shifting system for walking supports

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855808A (en) * 1973-09-12 1974-12-24 G Alacchi Shifting system for walking supports

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