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
Other languages
English (en)
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)
  • Transmission Devices (AREA)
  • Prostheses (AREA)
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 (enrdf_load_stackoverflow)
BE (1) BE697578A (enrdf_load_stackoverflow)
GB (1) GB1179597A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838516A (en) * 1986-06-10 1989-06-13 The Jacobs Manufacturing Company Compression release retarder with valve motion modifier
US4706624A (en) * 1986-06-10 1987-11-17 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 (de) * 1959-10-12 1967-10-05 Coal Industry (Patents) Limited, London Wandernder Strebausbau
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
US3503302A (en) 1970-03-31
BE697578A (enrdf_load_stackoverflow) 1967-10-02

Similar Documents

Publication Publication Date Title
GB1065559A (en) Improvements in hydraulic pit props
GB1349898A (en) Expansible tube valves
GB1068355A (en) Improvements in or relating to mine roof supports
GB1179597A (en) Hydraulically Operated Self-Advancing Mine Roof Supports
GB1221529A (en) Control valve
ES383717A1 (es) Perfeccionamientos en la construccion de conjuntos acciona-dores utilizados en los sistemas de frenos hidraulicos de vehiculos.
ES374955A1 (es) Procedimiento, con su aparato realizador, para controlar laexpansion y la retraccion de un conjunto cilindrico telesco-pico.
GB1332461A (en) Tube expanding devices
GB1228381A (enrdf_load_stackoverflow)
GB977800A (en) Improvements in or relating to mine roof supports
GB1437071A (en) Telescopic props
GB964000A (en) Adjustable swash-plate,high-pressure pump for oil emulsion
GB1252857A (enrdf_load_stackoverflow)
GB856720A (en) Improvements in roof supports for underground mines
GB1236384A (en) Improvements in or relating to actuators having a hydraulic actuator ram
GB1119206A (en) Improvements in or relating to mine roof supports
GB1233188A (enrdf_load_stackoverflow)
GB1179758A (en) Hydraulic Mine Support Systems
GB1070710A (en) Improvements relating to pit props
GB980581A (en) Improvements in hydraulic roof supports or chocks for mines
GB754108A (en) Hydraulic roof supports for mines
GB1026136A (en) Hydraulic pit prop with extended lift
GB1194139A (en) Improvements in Hydraulically-Operated Supporting Devices for Mines
GB1180578A (en) Advancing Mine Roof Supports
GB1092631A (en) Combined fluid shock absorbers and fluid-pressure control systems