FR1043573A - Extender for the installation of metal props - Google Patents

Extender for the installation of metal props

Info

Publication number
FR1043573A
FR1043573A FR1043573DA FR1043573A FR 1043573 A FR1043573 A FR 1043573A FR 1043573D A FR1043573D A FR 1043573DA FR 1043573 A FR1043573 A FR 1043573A
Authority
FR
France
Prior art keywords
extender
installation
metal props
props
metal
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
Hugo Recktenwald
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.)
REGIE DES MINES de la SARRE
Original Assignee
REGIE DES MINES de la SARRE
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 REGIE DES MINES de la SARRE filed Critical REGIE DES MINES de la SARRE
Application granted granted Critical
Publication of FR1043573A publication Critical patent/FR1043573A/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
    • E21D15/581—Devices for setting props or chocks in which the props are pre- loaded

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)
FR1043573D 1951-04-24 1951-04-24 Extender for the installation of metal props Expired FR1043573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1043573T 1951-04-24

Publications (1)

Publication Number Publication Date
FR1043573A true FR1043573A (en) 1953-11-10

Family

ID=9590636

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1043573D Expired FR1043573A (en) 1951-04-24 1951-04-24 Extender for the installation of metal props

Country Status (1)

Country Link
FR (1) FR1043573A (en)

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