GB319107A - Improvements in pit props for use in coal or other mines - Google Patents

Improvements in pit props for use in coal or other mines

Info

Publication number
GB319107A
GB319107A GB2212128A GB2212128A GB319107A GB 319107 A GB319107 A GB 319107A GB 2212128 A GB2212128 A GB 2212128A GB 2212128 A GB2212128 A GB 2212128A GB 319107 A GB319107 A GB 319107A
Authority
GB
United Kingdom
Prior art keywords
tapered
mines
coal
props
lengths
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
GB2212128A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2212128A priority Critical patent/GB319107A/en
Publication of GB319107A publication Critical patent/GB319107A/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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props

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)
  • Earth Drilling (AREA)

Abstract

319,107. Cuthbertson, R. W. April 18, 1929. Mine props.-Tubular props A are tapered throughout the whole or a portion of their lengths and are slotted throughout their lengths or only for a short distance in the tapered portion. The tapered portion may comprise a separate part A<1> fixed by a, spigot and socket to the lower end of the non-tapered tubular portion A, the tapered portion only being slotted at a<1>. Apertured caps may be applied to the head and foot. Specifications 293,520 and 296,920 are referred to.
GB2212128A 1929-04-18 1929-04-18 Improvements in pit props for use in coal or other mines Expired GB319107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2212128A GB319107A (en) 1929-04-18 1929-04-18 Improvements in pit props for use in coal or other mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2212128A GB319107A (en) 1929-04-18 1929-04-18 Improvements in pit props for use in coal or other mines

Publications (1)

Publication Number Publication Date
GB319107A true GB319107A (en) 1929-09-19

Family

ID=10174233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2212128A Expired GB319107A (en) 1929-04-18 1929-04-18 Improvements in pit props for use in coal or other mines

Country Status (1)

Country Link
GB (1) GB319107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534531A (en) * 1980-07-22 1985-08-13 Brown Allan H G Elongated prop for supporting a load

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534531A (en) * 1980-07-22 1985-08-13 Brown Allan H G Elongated prop for supporting a load

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