GB154790A - Adjustable timber supporter for use in mines - Google Patents

Adjustable timber supporter for use in mines

Info

Publication number
GB154790A
GB154790A GB2921219A GB2921219A GB154790A GB 154790 A GB154790 A GB 154790A GB 2921219 A GB2921219 A GB 2921219A GB 2921219 A GB2921219 A GB 2921219A GB 154790 A GB154790 A GB 154790A
Authority
GB
United Kingdom
Prior art keywords
mines
supporter
timber
adjustable timber
members
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
GB2921219A
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 GB2921219A priority Critical patent/GB154790A/en
Publication of GB154790A publication Critical patent/GB154790A/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
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals

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)
  • Clamps And Clips (AREA)

Abstract

154,790. Griffiths, W. J. Nov. 24, 1919. Shoring.-An adjustable support for mine timbers consists of two members a, b, preferably of steel or iron, each having a band riveted thereto and embracing the other. The members are extended and fixed by means of a pawl d, and a series of notches e, e<1> at intervals of 3 inches. One member is forked at f to fix into the ground and the other end has a prong g to engage the timber.
GB2921219A 1919-11-24 1919-11-24 Adjustable timber supporter for use in mines Expired GB154790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2921219A GB154790A (en) 1919-11-24 1919-11-24 Adjustable timber supporter for use in mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2921219A GB154790A (en) 1919-11-24 1919-11-24 Adjustable timber supporter for use in mines

Publications (1)

Publication Number Publication Date
GB154790A true GB154790A (en) 1920-12-09

Family

ID=10287918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2921219A Expired GB154790A (en) 1919-11-24 1919-11-24 Adjustable timber supporter for use in mines

Country Status (1)

Country Link
GB (1) GB154790A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113863969A (en) * 2021-10-11 2021-12-31 煤炭科学研究总院 Support column with self-locking structure
CN114017075A (en) * 2021-10-11 2022-02-08 煤炭科学研究总院 Support column with rotatable footing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113863969A (en) * 2021-10-11 2021-12-31 煤炭科学研究总院 Support column with self-locking structure
CN114017075A (en) * 2021-10-11 2022-02-08 煤炭科学研究总院 Support column with rotatable footing
CN114017075B (en) * 2021-10-11 2023-10-20 煤炭科学研究总院有限公司 Support column with rotatable footing

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