GB1186179A - Mine Roof Support Unit. - Google Patents
Mine Roof Support Unit.Info
- Publication number
- GB1186179A GB1186179A GB3969966A GB3969966A GB1186179A GB 1186179 A GB1186179 A GB 1186179A GB 3969966 A GB3969966 A GB 3969966A GB 3969966 A GB3969966 A GB 3969966A GB 1186179 A GB1186179 A GB 1186179A
- Authority
- GB
- United Kingdom
- Prior art keywords
- extension
- mine roof
- roof support
- sept
- roof
- 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
- 238000010276 construction Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type
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)
- Body Structure For Vehicles (AREA)
Abstract
1,186,179. Cantilever extensions for mine roof supports. A. G. WILD & CO. Ltd. 6 Sept., 1967 [6 Sept., 1966], No. 39699/66. Heading E1P. An advancing mine roof support frame is provided with a cantilever extension which is reciprocated by a first fluid-operated jack 9 and is urged against the roof by a further fluid-operated means 4. The extension may comprise one or more forepoling members 7 removably carrying a canopy 8 and fulcrums 14. The means 4 constitute single-acting rams which to-gether with the double-acting jack 9 are controlled by a circuit, see Fig. 7 (not shown), independent of the main control circuit of the support and embodying an adjustable relief valve, trigger valve, selector valve with attendant manual control means. For details concerning mode of operation, attachment of extension to the main roof support 1 and construction of the latter the Specification and remaining figures, (not shown), should be referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3969966A GB1186179A (en) | 1966-09-06 | 1966-09-06 | Mine Roof Support Unit. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3969966A GB1186179A (en) | 1966-09-06 | 1966-09-06 | Mine Roof Support Unit. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1186179A true GB1186179A (en) | 1970-04-02 |
Family
ID=10410992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3969966A Expired GB1186179A (en) | 1966-09-06 | 1966-09-06 | Mine Roof Support Unit. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1186179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046944A (en) * | 2012-12-26 | 2013-04-17 | 三一重型装备有限公司 | Hydraulic support |
| CZ308397B6 (en) * | 2019-10-25 | 2020-07-22 | Ostroj A.S. | Articulated steel mining joist to cover the ceiling at the point of contact between the face and the corridor |
-
1966
- 1966-09-06 GB GB3969966A patent/GB1186179A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046944A (en) * | 2012-12-26 | 2013-04-17 | 三一重型装备有限公司 | Hydraulic support |
| CN103046944B (en) * | 2012-12-26 | 2015-04-22 | 三一重型装备有限公司 | Hydraulic support |
| CZ308397B6 (en) * | 2019-10-25 | 2020-07-22 | Ostroj A.S. | Articulated steel mining joist to cover the ceiling at the point of contact between the face and the corridor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |