GB667434A - An improved safety-prop for use in mining and the like - Google Patents

An improved safety-prop for use in mining and the like

Info

Publication number
GB667434A
GB667434A GB3207/50A GB320750A GB667434A GB 667434 A GB667434 A GB 667434A GB 3207/50 A GB3207/50 A GB 3207/50A GB 320750 A GB320750 A GB 320750A GB 667434 A GB667434 A GB 667434A
Authority
GB
United Kingdom
Prior art keywords
prop
cable
riesinger
trading
mining
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
GB3207/50A
Other languages
English (en)
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
Publication of GB667434A publication Critical patent/GB667434A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
    • E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
    • E21C29/06—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains anchored at one or both ends to the mine working face
    • E21C29/08—Anchoring arrangements
    • 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
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Emergency Lowering Means (AREA)
GB3207/50A 1949-11-29 1950-02-08 An improved safety-prop for use in mining and the like Expired GB667434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1000900T 1949-11-29

Publications (1)

Publication Number Publication Date
GB667434A true GB667434A (en) 1952-02-27

Family

ID=9560806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3207/50A Expired GB667434A (en) 1949-11-29 1950-02-08 An improved safety-prop for use in mining and the like

Country Status (3)

Country Link
DE (1) DE803171C (fr)
FR (1) FR1000900A (fr)
GB (1) GB667434A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892606A (en) * 1953-10-26 1959-06-30 Mentor C Addicks Corner mounting device for sheaves and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892606A (en) * 1953-10-26 1959-06-30 Mentor C Addicks Corner mounting device for sheaves and the like

Also Published As

Publication number Publication date
FR1000900A (fr) 1952-02-18
DE803171C (de) 1951-03-01

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