GB152444A - Improvements in props or struts for use in mining and similar operations - Google Patents

Improvements in props or struts for use in mining and similar operations

Info

Publication number
GB152444A
GB152444A GB1809519A GB1809519A GB152444A GB 152444 A GB152444 A GB 152444A GB 1809519 A GB1809519 A GB 1809519A GB 1809519 A GB1809519 A GB 1809519A GB 152444 A GB152444 A GB 152444A
Authority
GB
United Kingdom
Prior art keywords
struts
props
mining
similar operations
socket
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
GB1809519A
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.)
HENRY ROWNEY
Original Assignee
HENRY ROWNEY
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 HENRY ROWNEY filed Critical HENRY ROWNEY
Priority to GB1809519A priority Critical patent/GB152444A/en
Publication of GB152444A publication Critical patent/GB152444A/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
    • E21D15/02—Non-telescopic 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)
  • Pivots And Pivotal Connections (AREA)

Abstract

152,444. Rowney, H. July 21, 1919. Mine props, struts, &c. consist of a metal tube a having a lower parallel portion and an upper flaring portion a<1> surmounted by a socket a<2> which receives a stump of timber c and has a thickend rim a<5>. An external collar a<3> serves to strengthen the tube at the point where the tendency to collapse is greatest. The parallelsided socket a<2> is kinked where it joins the portion a' and is closed at the bottom by a transverse portion b.
GB1809519A 1919-07-21 1919-07-21 Improvements in props or struts for use in mining and similar operations Expired GB152444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1809519A GB152444A (en) 1919-07-21 1919-07-21 Improvements in props or struts for use in mining and similar operations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1809519A GB152444A (en) 1919-07-21 1919-07-21 Improvements in props or struts for use in mining and similar operations

Publications (1)

Publication Number Publication Date
GB152444A true GB152444A (en) 1920-10-21

Family

ID=10106562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1809519A Expired GB152444A (en) 1919-07-21 1919-07-21 Improvements in props or struts for use in mining and similar operations

Country Status (1)

Country Link
GB (1) GB152444A (en)

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