GB882210A - Improvements applicable to mining when using hydraulic frame supports - Google Patents

Improvements applicable to mining when using hydraulic frame supports

Info

Publication number
GB882210A
GB882210A GB13749/58A GB1374958A GB882210A GB 882210 A GB882210 A GB 882210A GB 13749/58 A GB13749/58 A GB 13749/58A GB 1374958 A GB1374958 A GB 1374958A GB 882210 A GB882210 A GB 882210A
Authority
GB
United Kingdom
Prior art keywords
roof
frames
hydraulic
hemscheidt
liquid
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
GB13749/58A
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.)
Hemscheidt Hermann Maschinenfabrik GmbH and Co
Original Assignee
Hemscheidt Hermann Maschinenfabrik GmbH and Co
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 Hemscheidt Hermann Maschinenfabrik GmbH and Co filed Critical Hemscheidt Hermann Maschinenfabrik GmbH and Co
Publication of GB882210A publication Critical patent/GB882210A/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
    • E21D15/46—Telescopic props with load-measuring devices; with alarm devices
    • E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details

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)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

882,210. Hydraulic mine roof supports. HEMSCHEIDT, H., [trading as HEMSCHEIDT MASCHINENFABRIK, H.]. April 30, 1958 [April 30, 1957], No. 13749/58. Drawings to Specification. Class 20(2) A mine roof is supported by hydraulic frames supplied with liquid under pressure in series in a closed cycle by a pump and the liquid returns through a number of pipes at intervals along the series of frames in each of which is a liquid flaw meter so that varying increases in pressure caused by roof collapse can be ascertained. A meter at the end of the common return pipe indicates total increases. Mechanical convergence or roof collapse recondensers are placed adjacent individual roof frames for comparison and checking.
GB13749/58A 1957-04-30 1958-04-30 Improvements applicable to mining when using hydraulic frame supports Expired GB882210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE882210X 1957-04-30

Publications (1)

Publication Number Publication Date
GB882210A true GB882210A (en) 1961-11-15

Family

ID=6831623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13749/58A Expired GB882210A (en) 1957-04-30 1958-04-30 Improvements applicable to mining when using hydraulic frame supports

Country Status (1)

Country Link
GB (1) GB882210A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248885A (en) * 1962-10-10 1966-05-03 Dowty Mining Equipment Ltd Roof support assemblies
EP3187683A1 (en) * 2015-12-30 2017-07-05 Bomar S.A. w upadlosci ukladowej A method for predicting crumps and methane hazard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248885A (en) * 1962-10-10 1966-05-03 Dowty Mining Equipment Ltd Roof support assemblies
EP3187683A1 (en) * 2015-12-30 2017-07-05 Bomar S.A. w upadlosci ukladowej A method for predicting crumps and methane hazard

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