FR1088570A - Device to facilitate the installation of metal mine props - Google Patents

Device to facilitate the installation of metal mine props

Info

Publication number
FR1088570A
FR1088570A FR1088570DA FR1088570A FR 1088570 A FR1088570 A FR 1088570A FR 1088570D A FR1088570D A FR 1088570DA FR 1088570 A FR1088570 A FR 1088570A
Authority
FR
France
Prior art keywords
facilitate
installation
metal mine
mine props
props
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
Other languages
French (fr)
Inventor
Otto Warias
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 filed Critical
Application granted granted Critical
Publication of FR1088570A publication Critical patent/FR1088570A/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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
    • 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
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/517—Extension elements

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)
FR1088570D 1952-06-07 1952-06-07 Device to facilitate the installation of metal mine props Expired FR1088570A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1088570T 1952-06-07

Publications (1)

Publication Number Publication Date
FR1088570A true FR1088570A (en) 1955-03-08

Family

ID=9613896

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1088570D Expired FR1088570A (en) 1952-06-07 1952-06-07 Device to facilitate the installation of metal mine props

Country Status (1)

Country Link
FR (1) FR1088570A (en)

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