GB851283A - Improvements in pit props - Google Patents

Improvements in pit props

Info

Publication number
GB851283A
GB851283A GB20752/58A GB2075258A GB851283A GB 851283 A GB851283 A GB 851283A GB 20752/58 A GB20752/58 A GB 20752/58A GB 2075258 A GB2075258 A GB 2075258A GB 851283 A GB851283 A GB 851283A
Authority
GB
United Kingdom
Prior art keywords
pins
bores
extension
prop
recesses
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
GB20752/58A
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.)
Rheinstahl Wanheim GmbH
Original Assignee
Rheinstahl Wanheim GmbH
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 Rheinstahl Wanheim GmbH filed Critical Rheinstahl Wanheim GmbH
Publication of GB851283A publication Critical patent/GB851283A/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)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

851,283. Mine roof supports. RHEINSTAHL WANHEIM G.m.b.H. June 27, 1958 [July 2, 1957], No. 20752/58. Class 20(2) A telescopic pit prop has at either of its ends a connector 2 having radial bores 3 which open into triangular recesses 4 on the inner side of the member into which pins 6 can be driven to connect the prop to the protective sleeve 7 of an extension 5. Another connector 2 is similarly fitted to the extention 5 for connection of a foot or head plate. To remove the extension 5 the pins are driven further into the bores to release the sleeve from the member 2. The pins are removed from the bores by a drift inserted through the recesses 4. A cone shaped base is illustrated in Fig. 7 (not shown).
GB20752/58A 1957-07-02 1958-06-27 Improvements in pit props Expired GB851283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE851283X 1957-07-02

Publications (1)

Publication Number Publication Date
GB851283A true GB851283A (en) 1960-10-12

Family

ID=6780554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20752/58A Expired GB851283A (en) 1957-07-02 1958-06-27 Improvements in pit props

Country Status (1)

Country Link
GB (1) GB851283A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712947A (en) * 1980-07-22 1987-12-15 Hunt Leuchars And Hepburn Limited Mine support prop

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712947A (en) * 1980-07-22 1987-12-15 Hunt Leuchars And Hepburn Limited Mine support prop

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