GB1179233A - Improvements in or relating to Fluid Operated Roof Supports. - Google Patents

Improvements in or relating to Fluid Operated Roof Supports.

Info

Publication number
GB1179233A
GB1179233A GB652766A GB652766A GB1179233A GB 1179233 A GB1179233 A GB 1179233A GB 652766 A GB652766 A GB 652766A GB 652766 A GB652766 A GB 652766A GB 1179233 A GB1179233 A GB 1179233A
Authority
GB
United Kingdom
Prior art keywords
strips
relating
roof
roof supports
fluid operated
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
GB652766A
Inventor
Lewis Robert Bower
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.)
AG Wild and Co Ltd
Original Assignee
AG Wild and Co 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 AG Wild and Co Ltd filed Critical AG Wild and Co Ltd
Priority to GB652766A priority Critical patent/GB1179233A/en
Priority to BE693998D priority patent/BE693998A/xx
Priority to NL6702204A priority patent/NL6702204A/xx
Priority to FR95063A priority patent/FR1511459A/en
Publication of GB1179233A publication Critical patent/GB1179233A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/18—Threshing devices
    • A01F12/24—One-part threshing concaves
    • 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
    • E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Tents Or Canopies (AREA)

Abstract

1,179,233. Advancing mine roof supports. A. G. WILD & CO. Ltd. 19 Jan., 1967 [15 Feb., 1966], No. 6527/66. Heading E1P. The roof canopies of the forward and rearward chocks of an advancing mine roof support frame are interconnected' by roof-engageable spring-steel strips 22, 24, 26 of which the outer members 22, 26 are extended forwardly of the forward chock to form a cantilever extension. The arrangement shown is also provided with a pair of inner floor-engaging strips 30 and a pair of outer floor-engaging strips disposed beneath the strips 22, 26.
GB652766A 1966-02-15 1966-02-15 Improvements in or relating to Fluid Operated Roof Supports. Expired GB1179233A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB652766A GB1179233A (en) 1966-02-15 1966-02-15 Improvements in or relating to Fluid Operated Roof Supports.
BE693998D BE693998A (en) 1966-02-15 1967-02-13
NL6702204A NL6702204A (en) 1966-02-15 1967-02-14
FR95063A FR1511459A (en) 1966-02-15 1967-02-15 Mine gallery roof support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB652766A GB1179233A (en) 1966-02-15 1966-02-15 Improvements in or relating to Fluid Operated Roof Supports.

Publications (1)

Publication Number Publication Date
GB1179233A true GB1179233A (en) 1970-01-28

Family

ID=9816135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB652766A Expired GB1179233A (en) 1966-02-15 1966-02-15 Improvements in or relating to Fluid Operated Roof Supports.

Country Status (4)

Country Link
BE (1) BE693998A (en)
FR (1) FR1511459A (en)
GB (1) GB1179233A (en)
NL (1) NL6702204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4605341A (en) * 1983-10-22 1986-08-12 Dobson Park Industries Plc. Mine roof support and attachment means therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4605341A (en) * 1983-10-22 1986-08-12 Dobson Park Industries Plc. Mine roof support and attachment means therefor

Also Published As

Publication number Publication date
BE693998A (en) 1967-07-17
NL6702204A (en) 1967-08-16
FR1511459A (en) 1968-01-26

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