GB991010A - Roof support assembly - Google Patents

Roof support assembly

Info

Publication number
GB991010A
GB991010A GB31932/62A GB3193262A GB991010A GB 991010 A GB991010 A GB 991010A GB 31932/62 A GB31932/62 A GB 31932/62A GB 3193262 A GB3193262 A GB 3193262A GB 991010 A GB991010 A GB 991010A
Authority
GB
United Kingdom
Prior art keywords
roof support
support assembly
roof
series
signalling
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
GB31932/62A
Inventor
Michael Charles Potts
Douglas Herbert Hewlett Bolton
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 GB31932/62A priority Critical patent/GB991010A/en
Priority to DED42278A priority patent/DE1198769B/en
Priority to FR945014A priority patent/FR1372076A/en
Priority to US414507A priority patent/US3202058A/en
Publication of GB991010A publication Critical patent/GB991010A/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E21D23/26—Hydraulic or pneumatic control

Abstract

991,010. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. July 23, 1963 [Aug. 20, 1962], No. 31932/62. Heading F1P. The subject matter of this Specification is identical to Specification 991,011 but the claims relate to a roof support assembly wherein a series of fluid pressure operated roof supports are advanceable in a predetremined sequence, each support including signalling means whereby a signal is sent to the next roof support in the series to initiate its advance, the signalling means being locked in the signalling position until unlocked by release means.
GB31932/62A 1962-08-20 1962-08-20 Roof support assembly Expired GB991010A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB31932/62A GB991010A (en) 1962-08-20 1962-08-20 Roof support assembly
DED42278A DE1198769B (en) 1962-08-20 1963-08-19 Face wall expansion
FR945014A FR1372076A (en) 1962-08-20 1963-08-19 Roof support device in a mine
US414507A US3202058A (en) 1962-08-20 1964-11-20 Roof support assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31932/62A GB991010A (en) 1962-08-20 1962-08-20 Roof support assembly

Publications (1)

Publication Number Publication Date
GB991010A true GB991010A (en) 1965-05-05

Family

ID=10330546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31932/62A Expired GB991010A (en) 1962-08-20 1962-08-20 Roof support assembly

Country Status (3)

Country Link
US (1) US3202058A (en)
DE (1) DE1198769B (en)
GB (1) GB991010A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1209086B (en) * 1964-12-30 1966-01-20 Bergwerksverband Gmbh Process for the automatic backward movement and placement of individual expansion units connected to form groups
US3348381A (en) * 1964-06-04 1967-10-24 Jacobi Oskar Coal face support systems
US3399601A (en) * 1965-03-24 1968-09-03 Fairey Eng Hydraulic sequential control systems
DE1583080A1 (en) * 1966-10-14 1970-04-23 Dowty Mining Equipment Ltd Pit ceiling extension
US3601998A (en) * 1969-02-19 1971-08-31 Wild A G & Co Ltd Control of mine roof support assemblies
GB1531246A (en) * 1975-07-29 1978-11-08 Gullick Dobson Ltd Mine roof support control systems
AU8549282A (en) * 1981-07-16 1983-01-20 Dowty Mining Equipment Ltd. Hydraulically operated mine roof support

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069548B (en) * 1959-11-26
DE1131626B (en) * 1958-04-14 1962-06-20 Kloeckner Werke Ag Method and device for controlling the robbery and setting process of hydraulic longwall construction frames

Also Published As

Publication number Publication date
US3202058A (en) 1965-08-24
DE1198769B (en) 1965-08-19

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