FR1065089A - Device for adjusting the height of a mine prop - Google Patents

Device for adjusting the height of a mine prop

Info

Publication number
FR1065089A
FR1065089A FR1065089DA FR1065089A FR 1065089 A FR1065089 A FR 1065089A FR 1065089D A FR1065089D A FR 1065089DA FR 1065089 A FR1065089 A FR 1065089A
Authority
FR
France
Prior art keywords
adjusting
height
mine prop
prop
mine
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)
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.)
RECH S IND ET MINTERES SOC ET
Original Assignee
RECH S IND ET MINTERES SOC ET
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 RECH S IND ET MINTERES SOC ET filed Critical RECH S IND ET MINTERES SOC ET
Application granted granted Critical
Publication of FR1065089A publication Critical patent/FR1065089A/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
    • E21D15/52—Extensible units located above or below standard props
    • E21D15/526—Extensible units located above or below standard props for step-by-step extension of the prop

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)
FR1065089D 1952-10-28 1952-10-28 Device for adjusting the height of a mine prop Expired FR1065089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1065089T 1952-10-28

Publications (1)

Publication Number Publication Date
FR1065089A true FR1065089A (en) 1954-05-20

Family

ID=9602102

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1065089D Expired FR1065089A (en) 1952-10-28 1952-10-28 Device for adjusting the height of a mine prop

Country Status (1)

Country Link
FR (1) FR1065089A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767182A (en) * 1971-06-07 1973-10-23 New Chance Machine & Tool Co Adjustable heel stand for use with workpiece clamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767182A (en) * 1971-06-07 1973-10-23 New Chance Machine & Tool Co Adjustable heel stand for use with workpiece clamps

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