GB991010A - Roof support assembly - Google Patents
Roof support assemblyInfo
- 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
Links
- 230000011664 signaling Effects 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
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.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB31932/62A GB991010A (en) | 1962-08-20 | 1962-08-20 | Roof support assembly |
FR945014A FR1372076A (en) | 1962-08-20 | 1963-08-19 | Roof support device in a mine |
DED42278A DE1198769B (en) | 1962-08-20 | 1963-08-19 | Face wall expansion |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3348381A (en) * | 1964-06-04 | 1967-10-24 | Jacobi Oskar | Coal face support systems |
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 |
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)
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 |
-
1962
- 1962-08-20 GB GB31932/62A patent/GB991010A/en not_active Expired
-
1963
- 1963-08-19 DE DED42278A patent/DE1198769B/en active Pending
-
1964
- 1964-11-20 US US414507A patent/US3202058A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1198769B (en) | 1965-08-19 |
US3202058A (en) | 1965-08-24 |
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