FR1028960A - metal mine prop - Google Patents

metal mine prop

Info

Publication number
FR1028960A
FR1028960A FR1028960DA FR1028960A FR 1028960 A FR1028960 A FR 1028960A FR 1028960D A FR1028960D A FR 1028960DA FR 1028960 A FR1028960 A FR 1028960A
Authority
FR
France
Prior art keywords
metal mine
mine prop
prop
metal
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
Hans Gerlach
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 filed Critical
Application granted granted Critical
Publication of FR1028960A publication Critical patent/FR1028960A/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
    • E21D15/14—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)
FR1028960D 1949-11-14 1950-11-10 metal mine prop Expired FR1028960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1028960X 1949-11-14

Publications (1)

Publication Number Publication Date
FR1028960A true FR1028960A (en) 1953-05-29

Family

ID=7715395

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1028960D Expired FR1028960A (en) 1949-11-14 1950-11-10 metal mine prop

Country Status (1)

Country Link
FR (1) FR1028960A (en)

Similar Documents

Publication Publication Date Title
FR994556A (en) Hinged metal extension for lead
FR991406A (en) mine prop
FR1028960A (en) metal mine prop
FR1013702A (en) mine prop
FR1017177A (en) mine prop
FR1015645A (en) adjustable mine prop
FR1004600A (en) metal prop for mines
FR1009056A (en) mine prop
FR59376E (en) mine prop
FR920262A (en) metal mine prop
FR996969A (en) metal prop
FR993547A (en) prop
FR60718E (en) steel mine prop
FR60553E (en) mine prop
FR1009490A (en) mine prop
FR989336A (en) hydraulic mine prop
FR1008513A (en) mine prop
FR987254A (en) two-part mine prop
FR997068A (en) metal prop for mines
FR1015257A (en) Mine extension
FR1009955A (en) Mine gallery support
FR969365A (en) metal mine prop
FR1004614A (en) mining prop
FR1009846A (en) Pit prop
FR57162E (en) metal mine prop