GB941767A - Mine roof-supporting device - Google Patents
Mine roof-supporting deviceInfo
- Publication number
- GB941767A GB941767A GB810661A GB810661A GB941767A GB 941767 A GB941767 A GB 941767A GB 810661 A GB810661 A GB 810661A GB 810661 A GB810661 A GB 810661A GB 941767 A GB941767 A GB 941767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prop
- extension
- march
- carried
- mine 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
- 239000003245 coal 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
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
-
- 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
- E21D23/0047—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor without essential shifting devices
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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Framework For Endless Conveyors (AREA)
Abstract
941,767. Advancing mine-roof supports. DOWTY MINING EQUIPMENT Ltd. March 5, 1962 [March 6, 1961], No. 8106/61. Heading E1E. An advancing mine roof support having a pivoted cantilever extension 16 is provided with a swingable prop 18 carried by the extension in such a manner that on meeting obstructions it does not interfere with the advancement of the support. A boss 25 on the prop 18 is received in an aperture 23, 25 of the extension 16, 22 which carries apertured brackets 27 for the reception of pivot pins 26 carried by the prop thereby allowing relative movement as is decided by the dot-dash lines. Swinging movement of the prop as it engages the coal conveyer may be used to operate hydraulic control valves for the prop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB810661A GB941767A (en) | 1961-03-06 | 1961-03-06 | Mine roof-supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB810661A GB941767A (en) | 1961-03-06 | 1961-03-06 | Mine roof-supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB941767A true GB941767A (en) | 1963-11-13 |
Family
ID=9845878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB810661A Expired GB941767A (en) | 1961-03-06 | 1961-03-06 | Mine roof-supporting device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB941767A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121426A (en) * | 1976-10-02 | 1978-10-24 | Gewerkschaft Eisenhutte Westfalia | Mine roof support unit and assembly |
| US4309131A (en) * | 1979-07-12 | 1982-01-05 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Mine roof support |
| US4309130A (en) * | 1979-07-12 | 1982-01-05 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Mine roof support |
-
1961
- 1961-03-06 GB GB810661A patent/GB941767A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121426A (en) * | 1976-10-02 | 1978-10-24 | Gewerkschaft Eisenhutte Westfalia | Mine roof support unit and assembly |
| US4309131A (en) * | 1979-07-12 | 1982-01-05 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Mine roof support |
| US4309130A (en) * | 1979-07-12 | 1982-01-05 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Mine roof support |
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