FR961322A - - Google Patents
Info
- Publication number
- FR961322A FR961322A FR961322DA FR961322A FR 961322 A FR961322 A FR 961322A FR 961322D A FR961322D A FR 961322DA FR 961322 A FR961322 A FR 961322A
- Authority
- FR
- France
- 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
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
- E21D23/0047—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
-
- 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
- E21D23/0056—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with individual advancing 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR961322A true FR961322A (en) | 1950-05-10 |
Family
ID=1562839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR961322D Expired FR961322A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR961322A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2694293A (en) * | 1953-05-08 | 1954-11-16 | Hydrauliques Pour L Ind Minier | Propping device for roofs of mine levels |
| DE1003162B (en) * | 1952-10-31 | 1957-02-28 | Wilhelm Reppel | Device for stamp-free pre-paving in accordance with the progressive dismantling and method for operating the device |
| US2795935A (en) * | 1952-09-30 | 1957-06-18 | Joy Mfg Co | Walking roof support |
| US2795936A (en) * | 1952-09-30 | 1957-06-18 | Joy Mfg Co | Walking roof support |
| US2801522A (en) * | 1952-02-28 | 1957-08-06 | Kohlenbergban Leitung Deutsche | Mine arch supports |
| DE1140165B (en) * | 1959-06-09 | 1962-11-29 | Rheinstahl Gmbh Wanheim | Rack and pinion feed device for mining operations |
-
0
- FR FR961322D patent/FR961322A/fr not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2801522A (en) * | 1952-02-28 | 1957-08-06 | Kohlenbergban Leitung Deutsche | Mine arch supports |
| US2795935A (en) * | 1952-09-30 | 1957-06-18 | Joy Mfg Co | Walking roof support |
| US2795936A (en) * | 1952-09-30 | 1957-06-18 | Joy Mfg Co | Walking roof support |
| DE1003162B (en) * | 1952-10-31 | 1957-02-28 | Wilhelm Reppel | Device for stamp-free pre-paving in accordance with the progressive dismantling and method for operating the device |
| US2694293A (en) * | 1953-05-08 | 1954-11-16 | Hydrauliques Pour L Ind Minier | Propping device for roofs of mine levels |
| DE1140165B (en) * | 1959-06-09 | 1962-11-29 | Rheinstahl Gmbh Wanheim | Rack and pinion feed device for mining operations |