DE148805C - - Google Patents

Info

Publication number
DE148805C
DE148805C DE1902148805D DE148805DA DE148805C DE 148805 C DE148805 C DE 148805C DE 1902148805 D DE1902148805 D DE 1902148805D DE 148805D A DE148805D A DE 148805DA DE 148805 C DE148805 C DE 148805C
Authority
DE
Germany
Prior art keywords
lifting
jack
springs
traverse
work
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
DE1902148805D
Other languages
German (de)
English (en)
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 DE148805C publication Critical patent/DE148805C/de
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • 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
    • E21D15/581—Devices for setting props or chocks in which the props are pre- loaded
    • E21D15/5813—Devices for setting props or chocks in which the props are pre- loaded by means of power accumulators to be pre-charged by rock pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Movable Scaffolding (AREA)
DE1902148805D 1902-12-16 1902-12-16 Expired DE148805C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL148805T 1902-12-16

Publications (1)

Publication Number Publication Date
DE148805C true DE148805C (enrdf_load_stackoverflow) 1904-02-25

Family

ID=415866

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1902148805D Expired DE148805C (enrdf_load_stackoverflow) 1902-12-16 1902-12-16

Country Status (1)

Country Link
DE (1) DE148805C (enrdf_load_stackoverflow)

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