FR1009964A - Device for producing pre-tension in mine props - Google Patents

Device for producing pre-tension in mine props

Info

Publication number
FR1009964A
FR1009964A FR1009964DA FR1009964A FR 1009964 A FR1009964 A FR 1009964A FR 1009964D A FR1009964D A FR 1009964DA FR 1009964 A FR1009964 A FR 1009964A
Authority
FR
France
Prior art keywords
tension
producing pre
mine props
props
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)
Inventor
Fritz Scherer
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.)
SAARLANDISCHE BRENNSTOFF TECHN
Original Assignee
SAARLANDISCHE BRENNSTOFF TECHN
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 SAARLANDISCHE BRENNSTOFF TECHN filed Critical SAARLANDISCHE BRENNSTOFF TECHN
Application granted granted Critical
Publication of FR1009964A publication Critical patent/FR1009964A/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

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)
FR1009964D 1948-07-16 1948-07-16 Device for producing pre-tension in mine props Expired FR1009964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1009964T 1948-07-16

Publications (1)

Publication Number Publication Date
FR1009964A true FR1009964A (en) 1952-06-05

Family

ID=9568627

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1009964D Expired FR1009964A (en) 1948-07-16 1948-07-16 Device for producing pre-tension in mine props

Country Status (1)

Country Link
FR (1) FR1009964A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014506B (en) * 1954-04-13 1957-08-29 Hermann Schwarz Kommanditgesel Testing device for pit stamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014506B (en) * 1954-04-13 1957-08-29 Hermann Schwarz Kommanditgesel Testing device for pit stamp

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