GB905379A - Improvements relating to hydraulic mine roof supporting devices - Google Patents

Improvements relating to hydraulic mine roof supporting devices

Info

Publication number
GB905379A
GB905379A GB10341/60A GB1034160A GB905379A GB 905379 A GB905379 A GB 905379A GB 10341/60 A GB10341/60 A GB 10341/60A GB 1034160 A GB1034160 A GB 1034160A GB 905379 A GB905379 A GB 905379A
Authority
GB
United Kingdom
Prior art keywords
valve
mine roof
frame units
march
improvements relating
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
GB10341/60A
Inventor
Colin Michael Frye
Herbert Milburn
Richard Henry Bryan Winder
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
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB10341/60A priority Critical patent/GB905379A/en
Priority to US96746A priority patent/US3164066A/en
Publication of GB905379A publication Critical patent/GB905379A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0086—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor in galleries
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0069—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 without essential advancing shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/12—Control, e.g. using remote control

Abstract

905,379. Advancing pit props. DOWTY MINING EQUIPMENT Ltd. March 14, 1961 [March 23, 1960], No. 10341/60. Class 20 (2). In an advancing mine roof support comprising two overlapping and interconnected frame units, see Fig. 1 (not shown), adapted to be advanced in push-pull fashion, the prop means 15 of each frame unit are each connected to power supply and return lines through conduit means incorporating a four-way selector valve 33 and an isolating valve 55 for preventing simultaneous contraction of the frame units. Each isolating valve is spring-loaded to prevent contraction of its associated prop means unless retracted by pressure fluid fed through a conduit 64 communicating with the setting pressure of the second frame unit, the selector valve being suitably positioned. Each valve 55 is provided with a manual over-ride 66 to allow both frame units to be simultaneously extended.
GB10341/60A 1960-03-23 1960-03-23 Improvements relating to hydraulic mine roof supporting devices Expired GB905379A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB10341/60A GB905379A (en) 1960-03-23 1960-03-23 Improvements relating to hydraulic mine roof supporting devices
US96746A US3164066A (en) 1960-03-23 1961-03-20 Hydraulic mine roof supporting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10341/60A GB905379A (en) 1960-03-23 1960-03-23 Improvements relating to hydraulic mine roof supporting devices

Publications (1)

Publication Number Publication Date
GB905379A true GB905379A (en) 1962-09-05

Family

ID=9966074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10341/60A Expired GB905379A (en) 1960-03-23 1960-03-23 Improvements relating to hydraulic mine roof supporting devices

Country Status (2)

Country Link
US (1) US3164066A (en)
GB (1) GB905379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367907A1 (en) * 1976-10-15 1978-05-12 Bochumer Eisen Heintzmann AUXILIARY SUPPORT FOR THE PASSAGE FROM PRUNING TO THE GALLERY
FR2415720A1 (en) * 1978-01-27 1979-08-24 Stephanois Constr Meca Mine gallery roof support - has three relatively movable portal frames, with hydraulically-operated shoes supportable against caps

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE655844A (en) * 1963-11-29 1965-03-16
GB1287565A (en) * 1968-09-10 1972-08-31 Mastabar Mining Equip Co Ltd Improvements in or relating to a self-advancing mine roof support
US4091715A (en) * 1975-05-30 1978-05-30 Deggendorfer Werft Und Eisenbau G.M.B.H. Hydraulic system for opening and closing hopper barges
JPH05280505A (en) * 1992-04-02 1993-10-26 Toshiba Mach Co Ltd Cylinder device
EA201692170A1 (en) * 2014-04-28 2017-03-31 Коугар Кан Компани Пти Лтд. TELESCOPIC PUMPING STAND IN ASSEMBLY WITH IMPROVED CHARACTERISTICS OF RESISTANCE OF CEILING LOADS

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1955154A (en) * 1932-11-08 1934-04-17 Cash A W Co Valve mechanism
US2573563A (en) * 1947-08-27 1951-10-30 Vickers Inc Flow control and pressure regulating device
US2714505A (en) * 1948-05-01 1955-08-02 Joy Mfg Co Apparatus for mine roof control
US2593039A (en) * 1949-07-26 1952-04-15 Bendix Aviat Corp Valve for sequential operation of hydraulic motors
US2650782A (en) * 1951-09-18 1953-09-01 Boeing Co Landing unit for aircraft
US2778378A (en) * 1952-07-28 1957-01-22 Bendix Aviat Corp Combination sequence and locking valve
US3018630A (en) * 1960-02-25 1962-01-30 City Tank Corp Automatic valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2367907A1 (en) * 1976-10-15 1978-05-12 Bochumer Eisen Heintzmann AUXILIARY SUPPORT FOR THE PASSAGE FROM PRUNING TO THE GALLERY
FR2415720A1 (en) * 1978-01-27 1979-08-24 Stephanois Constr Meca Mine gallery roof support - has three relatively movable portal frames, with hydraulically-operated shoes supportable against caps

Also Published As

Publication number Publication date
US3164066A (en) 1965-01-05

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