GB961983A - Hydraulically operable mine prop - Google Patents

Hydraulically operable mine prop

Info

Publication number
GB961983A
GB961983A GB4887/61A GB488761A GB961983A GB 961983 A GB961983 A GB 961983A GB 4887/61 A GB4887/61 A GB 4887/61A GB 488761 A GB488761 A GB 488761A GB 961983 A GB961983 A GB 961983A
Authority
GB
United Kingdom
Prior art keywords
prop
sealing
feb
props
packing
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
GB4887/61A
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.)
MARGOT VON LINSINGEN
Original Assignee
MARGOT VON LINSINGEN
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 MARGOT VON LINSINGEN filed Critical MARGOT VON LINSINGEN
Publication of GB961983A publication Critical patent/GB961983A/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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket

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)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Actuator (AREA)
  • Forging (AREA)

Abstract

961,983. Hydraulic pit props. M. VON LINSINGEN, [trading as BOCHUMER EISENHUTTE HEINTZMANN & CO.]. Feb. 9, 1961 [Feb. 19, 1960], No. 4887/61. Heading E1E. In an hydraulic pit prop the inner telescopic piston 16, 17 is provided with a calotte-shaped seating 15 to universally accommodate a sealing unit 6, 7, 11, 12 having a packing adjusting ring 9 screwthreaded thereto, modified forms of universal joint to permit sealing when the parts 1, 16 are misaligned being apparent from Figs. 2, 3, 4 and 5 (not shown). The prop is provided with a combined pressure release- and reliefvalve 4 and has the pressure chamber 8 supplied via an inlet valve 3 or a reservoir in the props communicating therewith through a bolt 8 constructed as a valve-controlled tube. The bearing members defining the universal sealing, the piston and the packing, may be made of synthetic plastic material.
GB4887/61A 1960-02-19 1961-02-09 Hydraulically operable mine prop Expired GB961983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB56733A DE1198306B (en) 1960-02-19 1960-02-19 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
GB961983A true GB961983A (en) 1964-06-24

Family

ID=6971441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4887/61A Expired GB961983A (en) 1960-02-19 1961-02-09 Hydraulically operable mine prop

Country Status (6)

Country Link
US (1) US3172340A (en)
AT (1) AT250271B (en)
BE (1) BE600368A (en)
DE (1) DE1198306B (en)
GB (1) GB961983A (en)
NL (1) NL261134A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313347A (en) * 1963-01-09 1967-04-11 Gray Tool Co Well completion procedures and apparatus
US3395619A (en) * 1965-08-23 1968-08-06 Grebe Konrad Hydraulic propping apparatus with automatic overload protection means
CH551578A (en) * 1973-03-20 1974-07-15 Von Roll Ag PISTON FOR PISTON MACHINE.
JPS5523008Y2 (en) * 1975-10-15 1980-05-31
US4142449A (en) * 1976-02-03 1979-03-06 Thyssen Industrie Ag Hydraulic mine prop
AU564301B2 (en) * 1981-08-13 1987-08-06 Commonwealth Scientific And Industrial Research Organisation Reciprocatory piston and cylinder machine
US5205382A (en) * 1990-10-09 1993-04-27 The B. F. Goodrich Company Aircraft brake
US5413031A (en) * 1994-01-06 1995-05-09 Parker-Hannifin Corporation Alignment coupler for linear device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918561C (en) * 1951-08-08 1954-09-30 Arthur Hamel Hydraulic pit ram
DE1012275B (en) * 1953-09-09 1957-07-18 Coal Industry Patents Ltd Pit stamp
GB772543A (en) * 1954-06-26 1957-04-17 Gullick Ltd Improvements in or relating to props, chocks, and like roof supporting structures
DE1009137B (en) * 1955-12-14 1957-05-29 Hermann Schwarz K G Hydraulic pit ram with tubular inner and outer part

Also Published As

Publication number Publication date
NL261134A (en)
AT250271B (en) 1966-11-10
DE1198306B (en) 1965-08-12
BE600368A (en)
US3172340A (en) 1965-03-09

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