DE1037991B - Hydraulischer Grubenstempel - Google Patents

Hydraulischer Grubenstempel

Info

Publication number
DE1037991B
DE1037991B DED25535A DED0025535A DE1037991B DE 1037991 B DE1037991 B DE 1037991B DE D25535 A DED25535 A DE D25535A DE D0025535 A DED0025535 A DE D0025535A DE 1037991 B DE1037991 B DE 1037991B
Authority
DE
Germany
Prior art keywords
punch
cylinder
cap
pit
piston part
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
DED25535A
Other languages
German (de)
English (en)
Inventor
Alec Hodkinson
Joseph Alexander Wallace Mills
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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
Priority claimed from GB1341856A external-priority patent/GB815578A/en
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Publication of DE1037991B publication Critical patent/DE1037991B/de
Pending 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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • 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
    • E21D15/50—Component parts or details of props
    • E21D15/54—Details of the ends of props
    • E21D15/55—Details of the ends of props of prop heads or feet

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
DED25535A 1956-05-01 1957-05-02 Hydraulischer Grubenstempel Pending DE1037991B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1341856A GB815578A (en) 1956-05-01 Improvements in hydraulic pit props

Publications (1)

Publication Number Publication Date
DE1037991B true DE1037991B (de) 1958-09-04

Family

ID=10022603

Family Applications (1)

Application Number Title Priority Date Filing Date
DED25535A Pending DE1037991B (de) 1956-05-01 1957-05-02 Hydraulischer Grubenstempel

Country Status (3)

Country Link
BE (1) BE557125A (enrdf_load_stackoverflow)
DE (1) DE1037991B (enrdf_load_stackoverflow)
FR (1) FR1187688A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656879A (en) * 1984-07-02 1987-04-14 Yann Tay Enterprises Co., Ltd. Pump lever for a jack

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE800392C (de) * 1949-04-08 1950-11-02 Gewerk Eisenhuette Westfalia Hydraulischer Grubenstempel
FR1006760A (fr) * 1949-10-15 1952-04-28 étançon hydraulique sans pompe individuelle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE800392C (de) * 1949-04-08 1950-11-02 Gewerk Eisenhuette Westfalia Hydraulischer Grubenstempel
FR1006760A (fr) * 1949-10-15 1952-04-28 étançon hydraulique sans pompe individuelle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656879A (en) * 1984-07-02 1987-04-14 Yann Tay Enterprises Co., Ltd. Pump lever for a jack

Also Published As

Publication number Publication date
FR1187688A (fr) 1959-09-15
BE557125A (enrdf_load_stackoverflow)

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