GB1506581A - Stilts for use in mine workings - Google Patents

Stilts for use in mine workings

Info

Publication number
GB1506581A
GB1506581A GB2230874A GB2230874A GB1506581A GB 1506581 A GB1506581 A GB 1506581A GB 2230874 A GB2230874 A GB 2230874A GB 2230874 A GB2230874 A GB 2230874A GB 1506581 A GB1506581 A GB 1506581A
Authority
GB
United Kingdom
Prior art keywords
limb
leg
bend
stilts
stressed
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
GB2230874A
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.)
Sankey Holding Ltd
Original Assignee
GKN Sankey 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 GKN Sankey Ltd filed Critical GKN Sankey Ltd
Priority to GB2230874A priority Critical patent/GB1506581A/en
Publication of GB1506581A publication Critical patent/GB1506581A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure

Landscapes

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

Abstract

1506581 Yieldable mine roof support stilts GKN SANKEY Ltd 5 Aug 1975 [18 May 1974] 22308/74 Heading E1E A stilt for a mine roof support leg 11, 211 includes an elongate deformable member 13, 213 having at least two limbs 14, 214 and 15, 215 extending in the same direction from a bend 17, 217 therebetween, the limb 15, 215 being adapted to carry the leg 11, 211 and being itself supported by the -limb 14, 214 whereby under load one limb 15, 214 is stressed in tension and increases in length, and the other limb 14, 215 is stressed in compression and decreases in length, with movement of the bend 17, 217 along the deformable member, to control descent of the leg. As shown, there are two of each such limb contained in a tubular body 10, 210, the inner limbs 15, 215 being connected by a bend 16 or welded block 219 to engage the leg.
GB2230874A 1975-08-05 1975-08-05 Stilts for use in mine workings Expired GB1506581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2230874A GB1506581A (en) 1975-08-05 1975-08-05 Stilts for use in mine workings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2230874A GB1506581A (en) 1975-08-05 1975-08-05 Stilts for use in mine workings

Publications (1)

Publication Number Publication Date
GB1506581A true GB1506581A (en) 1978-04-05

Family

ID=10177283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2230874A Expired GB1506581A (en) 1975-08-05 1975-08-05 Stilts for use in mine workings

Country Status (1)

Country Link
GB (1) GB1506581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147636A (en) * 1983-10-10 1985-05-15 Leslie Arthur Neale Yieldable stilts for mine roof supports

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147636A (en) * 1983-10-10 1985-05-15 Leslie Arthur Neale Yieldable stilts for mine roof supports

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee