FR580046A - étançon de mine à action de coin - Google Patents

étançon de mine à action de coin

Info

Publication number
FR580046A
FR580046A FR580046DA FR580046A FR 580046 A FR580046 A FR 580046A FR 580046D A FR580046D A FR 580046DA FR 580046 A FR580046 A FR 580046A
Authority
FR
France
Prior art keywords
wedge action
mine prop
action mine
prop
wedge
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
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.)
B Seibert G M B H
Original Assignee
B Seibert G M B H
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 B Seibert G M B H filed Critical B Seibert G M B H
Application granted granted Critical
Publication of FR580046A publication Critical patent/FR580046A/fr
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
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted

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)
FR580046D 1924-04-11 1924-04-11 étançon de mine à action de coin Expired FR580046A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR580046T 1924-04-11

Publications (1)

Publication Number Publication Date
FR580046A true FR580046A (fr) 1924-10-28

Family

ID=8956531

Family Applications (1)

Application Number Title Priority Date Filing Date
FR580046D Expired FR580046A (fr) 1924-04-11 1924-04-11 étançon de mine à action de coin

Country Status (1)

Country Link
FR (1) FR580046A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918257A (en) * 1952-05-15 1959-12-22 Hahn Alexander Adjustable shore

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918257A (en) * 1952-05-15 1959-12-22 Hahn Alexander Adjustable shore

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