GB1160328A - A System for Supplying Fluid to Advanceable Mining Apparatus - Google Patents

A System for Supplying Fluid to Advanceable Mining Apparatus

Info

Publication number
GB1160328A
GB1160328A GB27248/67A GB2724867A GB1160328A GB 1160328 A GB1160328 A GB 1160328A GB 27248/67 A GB27248/67 A GB 27248/67A GB 2724867 A GB2724867 A GB 2724867A GB 1160328 A GB1160328 A GB 1160328A
Authority
GB
United Kingdom
Prior art keywords
fluid
jack
cylinder
piston
valve
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
GB27248/67A
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB1160328A publication Critical patent/GB1160328A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
    • E21F13/086—Armoured conveyors shifting devices

Abstract

1,160,328. Control systems for mining apparatus. GEWERKSCHAFT EISENHUTTE WESTFALIA. 13 June, 1967 [18 June, 1966], No. 27248/67. Heading E1P. A plurality of fluid pressure operated jacks 1 is used to urge the guide 20 of a mineral cutting machine (not shown) against a working face, and each jack 1 is extended in steps of predetermined magnitude by causing fluid supplied thereto or the fluid exhausted therefrom to be, expelled from, or received in, a cylinder 2 containing a floating .piston 5 the stroke of which is adjustable by a screwed spindle 8. As shown, fluid is supplied to the jack 1 from the cylinder 2 by operation of a valve 19, whereby fluid from a conduit 3 flows into one end of the cylinder 2 through a line 18, and fluid is expelled by the piston 5 through a line 17, a non-return valve 12 and a valve 16 to the jack 1. If the jack 1 is prevented from extending due to an obstruction, a relief valve 13 automatically operates. In the alternative arrangement, (Fig. 3, not shown), the fluid is expelled from the piston rod chamber of the jack and into the cylinder 2 by fluid supplied to the piston chamber of the jack.
GB27248/67A 1966-06-18 1967-06-13 A System for Supplying Fluid to Advanceable Mining Apparatus Expired GB1160328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1483957A DE1483957C3 (en) 1966-06-18 1966-06-18 Rear device for a face conveyor or a guide rail with an extraction machine guided on it

Publications (1)

Publication Number Publication Date
GB1160328A true GB1160328A (en) 1969-08-06

Family

ID=7128277

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27248/67A Expired GB1160328A (en) 1966-06-18 1967-06-13 A System for Supplying Fluid to Advanceable Mining Apparatus

Country Status (3)

Country Link
US (1) US3421795A (en)
DE (1) DE1483957C3 (en)
GB (1) GB1160328A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245299A (en) * 1990-06-20 1992-01-02 Hemscheidt Maschf Hermann A control system for longwall face support frames

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531162A (en) * 1967-12-09 1970-09-29 Gullick Ltd Metered supply of pressure fluid for longwall advance system
DE2265518C3 (en) * 1972-11-29 1982-04-01 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Device for backing the leadership of a mining machine or the like. for mining operations with metered loading of the return cylinders
DE2258423C3 (en) 1972-11-29 1980-11-13 Gewerkschaft Eisenhuette Westfalia, 4670 Luenen Device for backing the leadership of a mining machine or the like. for mining and extraction operations, with metered loading of the return cylinder
US3898845A (en) * 1973-01-31 1975-08-12 Gewerk Eisenhuette Westfalia Mineral mining installations
DE2830510C3 (en) * 1978-07-12 1981-07-23 Bergwerksverband Gmbh, 4300 Essen Method and valve arrangement for setting the stamps of a walking support
US20130255802A1 (en) * 2012-04-02 2013-10-03 Cameron International Corporation Valve and hydraulic controller
US20130256570A1 (en) * 2012-04-02 2013-10-03 Cameron International Corporation Valve and hydraulic controller

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692767A (en) * 1950-12-23 1954-10-26 Goodman Mfg Co Indexing means for continuous mining machine heads
US2859022A (en) * 1955-04-04 1958-11-04 Dowty Mining Equipment Ltd Hydraulic roof supports and conveyor feed jacks
US3120105A (en) * 1959-09-25 1964-02-04 Coal Industry Patents Ltd Self-advancing mine roof supports
GB1023125A (en) * 1963-07-22 1966-03-16 Dowty Mining Equipment Ltd Mining apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245299A (en) * 1990-06-20 1992-01-02 Hemscheidt Maschf Hermann A control system for longwall face support frames
GB2245299B (en) * 1990-06-20 1994-07-13 Hemscheidt Maschf Hermann A control system for longwall face support frames

Also Published As

Publication number Publication date
DE1483957A1 (en) 1969-04-17
DE1483957C3 (en) 1978-12-14
US3421795A (en) 1969-01-14
DE1483957B2 (en) 1974-03-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
PCNP Patent ceased through non-payment of renewal fee