GB1180011A - Mine Roof Supports. - Google Patents
Mine Roof Supports.Info
- Publication number
- GB1180011A GB1180011A GB3129666A GB3129666A GB1180011A GB 1180011 A GB1180011 A GB 1180011A GB 3129666 A GB3129666 A GB 3129666A GB 3129666 A GB3129666 A GB 3129666A GB 1180011 A GB1180011 A GB 1180011A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support
- mine roof
- jack
- advancing
- roof supports
- 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
- 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
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
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)
- Framework For Endless Conveyors (AREA)
Abstract
1,180,011. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. 24 April, 1967 [31 Jan., 1966; 12 July, 1966], Nos. 4193/66 and 31296/66. Heading E1P. In an advancing mine roof support 1, 2, 3 having an advancing jack 10 pivotally connected thereto at 6, 7, 8, the jack is connected to the conveyor 13 by a lost-motion device 11, 12, 14 and by a rope or chain 15 passing through a guide 16 on the support. The jack may be indirectly coupled to the conveyor through the medium of a thrust bar with a lost motion connection at either end thereof, see Figs. 1 and 2 (not shown) of Provisional Specification 1,180,011. The support 2 may have the same length as that of the support 1 in which case a second rope 15 is used passing through a guide likewise mounted on the support 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB419366 | 1966-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1180011A true GB1180011A (en) | 1970-02-04 |
Family
ID=9772469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3129666A Expired GB1180011A (en) | 1966-01-31 | 1966-01-31 | Mine Roof Supports. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1180011A (en) |
-
1966
- 1966-01-31 GB GB3129666A patent/GB1180011A/en not_active Expired
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