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FR860315A - étançon métallique de mine, en deux parties - Google Patents

étançon métallique de mine, en deux parties

Info

Publication number
FR860315A
FR860315A FR860315DA FR860315A FR 860315 A FR860315 A FR 860315A FR 860315D A FR860315D A FR 860315DA FR 860315 A FR860315 A FR 860315A
Authority
FR
France
Prior art keywords
piece metal
metal mine
mine prop
prop
piece
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)
Inventor
Heinrich Toussaint
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.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co KG
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 Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Application granted granted Critical
Publication of FR860315A publication Critical patent/FR860315A/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
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

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)
  • Clamps And Clips (AREA)
FR860315D 1938-09-23 1939-09-19 étançon métallique de mine, en deux parties Expired FR860315A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET51016D DE743365C (de) 1938-09-23 1938-09-23 Eiserner zweiteiliger Grubenstempel

Publications (1)

Publication Number Publication Date
FR860315A true FR860315A (fr) 1941-01-11

Family

ID=7563540

Family Applications (1)

Application Number Title Priority Date Filing Date
FR860315D Expired FR860315A (fr) 1938-09-23 1939-09-19 étançon métallique de mine, en deux parties

Country Status (3)

Country Link
US (1) US2273389A (fr)
DE (1) DE743365C (fr)
FR (1) FR860315A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE849387C (de) * 1950-06-10 1952-09-15 Otto Schroeder Fa Nachgiebiger, mehrteiliger Grubenstempel

Also Published As

Publication number Publication date
US2273389A (en) 1942-02-17
DE743365C (de) 1943-12-23

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