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GB1123975A - Hydraulically-operated advancing mine roof supports - Google Patents

Hydraulically-operated advancing mine roof supports

Info

Publication number
GB1123975A
GB1123975A GB41628/64A GB4162864A GB1123975A GB 1123975 A GB1123975 A GB 1123975A GB 41628/64 A GB41628/64 A GB 41628/64A GB 4162864 A GB4162864 A GB 4162864A GB 1123975 A GB1123975 A GB 1123975A
Authority
GB
United Kingdom
Prior art keywords
line
support
valve
jack
pressure
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
GB41628/64A
Other languages
English (en)
Inventor
James Carnegie
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 ELECTRICS Ltd
Original Assignee
DOWTY ELECTRICS 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 DOWTY ELECTRICS Ltd filed Critical DOWTY ELECTRICS Ltd
Priority to GB41628/64A priority Critical patent/GB1123975A/en
Priority to DED48399A priority patent/DE1237041B/de
Priority to US494336A priority patent/US3381581A/en
Publication of GB1123975A publication Critical patent/GB1123975A/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

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)
  • Fluid-Pressure Circuits (AREA)
GB41628/64A 1964-10-12 1964-10-12 Hydraulically-operated advancing mine roof supports Expired GB1123975A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB41628/64A GB1123975A (en) 1964-10-12 1964-10-12 Hydraulically-operated advancing mine roof supports
DED48399A DE1237041B (de) 1964-10-12 1965-10-11 Einrichtung zur Anzeige des Vorrueckvorganges eines wandernden Strebausbaues
US494336A US3381581A (en) 1964-10-12 1965-10-11 Roof support assembly having electrically operated signalling means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB41628/64A GB1123975A (en) 1964-10-12 1964-10-12 Hydraulically-operated advancing mine roof supports

Publications (1)

Publication Number Publication Date
GB1123975A true GB1123975A (en) 1968-08-14

Family

ID=10420573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41628/64A Expired GB1123975A (en) 1964-10-12 1964-10-12 Hydraulically-operated advancing mine roof supports

Country Status (3)

Country Link
US (1) US3381581A (de)
DE (1) DE1237041B (de)
GB (1) GB1123975A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498244A1 (fr) * 1981-01-20 1982-07-23 Coal Industry Patents Ltd Equipement de mesure de l'avance d'un appareil mobile de mine, notamment d'un convoyeur pour grand front de taille

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1583080A1 (de) * 1966-10-14 1970-04-23 Dowty Mining Equipment Ltd Grubendeckenausbau
US3908318A (en) * 1974-03-22 1975-09-30 Ambar Investment Method of vibration dampening by surface griding
DE3110220A1 (de) * 1981-03-17 1982-10-07 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hydraulische, insbesondere elektro-hydraulische ausbausteuerung fuer untertaegige gewinnungsbetriebe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271386A (fr) * 1959-10-12 1961-09-08 Coal Industry Patents Ltd Supports du toit des galeries de mines
GB961225A (en) * 1961-06-12 1964-06-17 Electro Hydraulics Ltd Hydraulically operated advancing roof support systems
GB991007A (en) * 1962-05-25 1965-05-05 Dowty Mining Equipment Ltd Mining apparatus
GB991226A (en) * 1962-08-07 1965-05-05 Rohm & Haas Manufacture of articles from plastic materials
GB996137A (en) * 1963-04-22 1965-06-23 Dowty Mining Equipment Ltd Mining apparatus
US3198083A (en) * 1963-05-13 1965-08-03 Dowty Mining Equipment Ltd Control system for mine roof supports
US3290997A (en) * 1964-09-24 1966-12-13 Pneumo Dvnamics Corp Low pressure pneumatic proportional control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498244A1 (fr) * 1981-01-20 1982-07-23 Coal Industry Patents Ltd Equipement de mesure de l'avance d'un appareil mobile de mine, notamment d'un convoyeur pour grand front de taille
US4453846A (en) * 1981-01-20 1984-06-12 Coal Industry (Patents) Limited Mine equipment

Also Published As

Publication number Publication date
DE1237041B (de) 1967-03-23
US3381581A (en) 1968-05-07

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