GB106429A - Improvements relating to Pit Props and the like. - Google Patents

Improvements relating to Pit Props and the like.

Info

Publication number
GB106429A
GB106429A GB1682116A GB1682116A GB106429A GB 106429 A GB106429 A GB 106429A GB 1682116 A GB1682116 A GB 1682116A GB 1682116 A GB1682116 A GB 1682116A GB 106429 A GB106429 A GB 106429A
Authority
GB
United Kingdom
Prior art keywords
improvements relating
cap
pit props
tapered
ring
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
GB1682116A
Inventor
John Edward Slack
Cyril Addenbroke Williams
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 GB1682116A priority Critical patent/GB106429A/en
Publication of GB106429A publication Critical patent/GB106429A/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
    • E21D15/18—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with one part resting on a supporting medium, e.g. rubber, sand, bitumen, lead, located in the other part, with or without expulsion or displacement of the medium 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)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

106,429. Slack, J. E., and Williams, C. A. Nov. 23, 1916. Mine props; shoring.-A weldless steel tube A is provided at one end with a cap or strengthening-ring D<1> while the other end is tapered outwards and strengthened by an in. ternal or external ring or by thickening or flanging the end of the tube as shown at A<2>. A wooden plug suitably shaped is fitted in the tapered end and may be removed by a bar inserted through the cap E.
GB1682116A 1916-11-23 1916-11-23 Improvements relating to Pit Props and the like. Expired GB106429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1682116A GB106429A (en) 1916-11-23 1916-11-23 Improvements relating to Pit Props and the like.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1682116A GB106429A (en) 1916-11-23 1916-11-23 Improvements relating to Pit Props and the like.

Publications (1)

Publication Number Publication Date
GB106429A true GB106429A (en) 1917-05-24

Family

ID=32249966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1682116A Expired GB106429A (en) 1916-11-23 1916-11-23 Improvements relating to Pit Props and the like.

Country Status (1)

Country Link
GB (1) GB106429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465557A (en) * 1945-10-22 1949-03-29 Joseph H Thornley Pile and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465557A (en) * 1945-10-22 1949-03-29 Joseph H Thornley Pile and method of making the same

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