GB1179597A - Hydraulically Operated Self-Advancing Mine Roof Supports - Google Patents

Hydraulically Operated Self-Advancing Mine Roof Supports

Info

Publication number
GB1179597A
GB1179597A GB22119/67A GB2211967A GB1179597A GB 1179597 A GB1179597 A GB 1179597A GB 22119/67 A GB22119/67 A GB 22119/67A GB 2211967 A GB2211967 A GB 2211967A GB 1179597 A GB1179597 A GB 1179597A
Authority
GB
United Kingdom
Prior art keywords
mine roof
nut
chamber
hydraulically operated
advancing mine
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
GB22119/67A
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 GB1179597A publication Critical patent/GB1179597A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Prostheses (AREA)
  • Transmission Devices (AREA)

Abstract

1,179,597. Valves. KLOCKNER-WERKE A.G. 12 May, 1967 [14 May, 1966], No. 22119/67. Heading F2V. [Also in Division E1] The hydraulic pressure supply from a pump P to the hydraulic prop R of a self-advancing mine roof support SU is released in two stages by first expanding a chamber 20 connected by a union 6 to the prop and secondly moving a valve member 4 away from its seat 5. The chamber 20 is expanded by rotating a nut 14 o axially move a non-rotatable spindle having t a piston 7<SP>1</SP> defining one end of the chamber 20. Continued rotation of the nut 14 causes a cap 10 on the end of the spindle 7 to engage the valve element 4 and move it away from its seat 5 against the action of a spring 18. The nut 14 has a scale for indicating the position of the piston 7<SP>1</SP>.
GB22119/67A 1966-05-14 1967-05-12 Hydraulically Operated Self-Advancing Mine Roof Supports Expired GB1179597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0059250 1966-05-14

Publications (1)

Publication Number Publication Date
GB1179597A true GB1179597A (en) 1970-01-28

Family

ID=7229060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22119/67A Expired GB1179597A (en) 1966-05-14 1967-05-12 Hydraulically Operated Self-Advancing Mine Roof Supports

Country Status (3)

Country Link
US (1) US3503302A (en)
BE (1) BE697578A (en)
GB (1) GB1179597A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4706624A (en) * 1986-06-10 1987-11-17 The Jacobs Manufacturing Company Compression release retarder with valve motion modifier
US4838516A (en) * 1986-06-10 1989-06-13 The Jacobs Manufacturing Company Compression release retarder with valve motion modifier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US901712A (en) * 1907-06-13 1908-10-20 Jeannot W Kenevel Valve-controlling means.
US974189A (en) * 1907-12-23 1910-11-01 Frank Ritter Valve mechanism for dental or other similar chairs.
US2657028A (en) * 1949-06-15 1953-10-27 Joy Mfg Co Walking jack
US2585389A (en) * 1950-03-11 1952-02-12 Gen Motors Corp Hydraulic control
US2748799A (en) * 1952-11-15 1956-06-05 Standard Oil Co Simultaneously-operated liquid and gas vent valves
US2783773A (en) * 1953-11-30 1957-03-05 Rasch Albert Replacement for faucet valves
US2825240A (en) * 1954-10-14 1958-03-04 Radiart Corp Hydraulic antenna rotator
DE1251256B (en) * 1959-10-12 1967-10-05 Coal Industry (Patents) Limited, London Wandering longwall mining
GB982978A (en) * 1960-08-10 1965-02-10 Dowty Mining Equipment Ltd Roof supports suitable for use in mines

Also Published As

Publication number Publication date
BE697578A (en) 1967-10-02
US3503302A (en) 1970-03-31

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