DE1125864B - Hydraulischer Grubenstempel mit als Unterteil dienendem Kolben - Google Patents

Hydraulischer Grubenstempel mit als Unterteil dienendem Kolben

Info

Publication number
DE1125864B
DE1125864B DEH30487A DEH0030487A DE1125864B DE 1125864 B DE1125864 B DE 1125864B DE H30487 A DEH30487 A DE H30487A DE H0030487 A DEH0030487 A DE H0030487A DE 1125864 B DE1125864 B DE 1125864B
Authority
DE
Germany
Prior art keywords
valve
cylinder
housing
punch according
pit
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.)
Pending
Application number
DEH30487A
Other languages
German (de)
English (en)
Inventor
Allen Clifford Talbott
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.)
HILL PORTER Ltd
Original Assignee
HILL PORTER Ltd
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 HILL PORTER Ltd filed Critical HILL PORTER Ltd
Publication of DE1125864B publication Critical patent/DE1125864B/de
Pending 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
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
    • 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)
  • 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)
  • Reciprocating Pumps (AREA)
  • Actuator (AREA)
  • Safety Valves (AREA)
DEH30487A 1956-06-29 1957-06-28 Hydraulischer Grubenstempel mit als Unterteil dienendem Kolben Pending DE1125864B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2013456A GB838790A (en) 1956-06-29 1956-06-29 Improvements in or relating to telescopic hydraulic props

Publications (1)

Publication Number Publication Date
DE1125864B true DE1125864B (de) 1962-03-22

Family

ID=10140922

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH30487A Pending DE1125864B (de) 1956-06-29 1957-06-28 Hydraulischer Grubenstempel mit als Unterteil dienendem Kolben

Country Status (4)

Country Link
BE (1) BE558677A (OSRAM)
DE (1) DE1125864B (OSRAM)
FR (1) FR1177614A (OSRAM)
GB (1) GB838790A (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133720A (en) * 1962-03-27 1964-05-19 Commercial Shearing Yieldable pit posts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1016105A (fr) * 1950-04-07 1952-11-03 Pilier extensible à commande hydraulique, utilisable comme étançon de mine susceptible de supporter de fortes pressions
DE919525C (de) * 1951-05-01 1954-10-25 Gullick Ltd Hydraulischer Grubenstempel
DE934342C (de) * 1954-06-27 1955-10-20 Gutehoffnungshuette Sterkrade Mehrteiliger hydraulischer Grubenstempel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1016105A (fr) * 1950-04-07 1952-11-03 Pilier extensible à commande hydraulique, utilisable comme étançon de mine susceptible de supporter de fortes pressions
DE919525C (de) * 1951-05-01 1954-10-25 Gullick Ltd Hydraulischer Grubenstempel
DE934342C (de) * 1954-06-27 1955-10-20 Gutehoffnungshuette Sterkrade Mehrteiliger hydraulischer Grubenstempel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133720A (en) * 1962-03-27 1964-05-19 Commercial Shearing Yieldable pit posts

Also Published As

Publication number Publication date
BE558677A (OSRAM)
FR1177614A (fr) 1959-04-28
GB838790A (en) 1960-06-22

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