GB1024268A - Improvements in and relating to hydraulic pit props - Google Patents

Improvements in and relating to hydraulic pit props

Info

Publication number
GB1024268A
GB1024268A GB1991964A GB1991964A GB1024268A GB 1024268 A GB1024268 A GB 1024268A GB 1991964 A GB1991964 A GB 1991964A GB 1991964 A GB1991964 A GB 1991964A GB 1024268 A GB1024268 A GB 1024268A
Authority
GB
United Kingdom
Prior art keywords
passage
prop
tube
valve
gun
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
GB1991964A
Other languages
English (en)
Inventor
Rolf Oehler
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.)
Kloeckner Werke AG
Original Assignee
Kloeckner Werke AG
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 Kloeckner Werke AG filed Critical Kloeckner Werke AG
Publication of GB1024268A publication Critical patent/GB1024268A/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
    • 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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
  • Nozzles (AREA)
GB1991964A 1964-04-17 1964-05-13 Improvements in and relating to hydraulic pit props Expired GB1024268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6404248A NL6404248A (enrdf_load_stackoverflow) 1964-04-17 1964-04-17

Publications (1)

Publication Number Publication Date
GB1024268A true GB1024268A (en) 1966-03-30

Family

ID=19789862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1991964A Expired GB1024268A (en) 1964-04-17 1964-05-13 Improvements in and relating to hydraulic pit props

Country Status (3)

Country Link
BE (1) BE646930A (enrdf_load_stackoverflow)
GB (1) GB1024268A (enrdf_load_stackoverflow)
NL (1) NL6404248A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE646930A (enrdf_load_stackoverflow) 1964-08-17
NL6404248A (enrdf_load_stackoverflow) 1965-10-18

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