BE649983A - - Google Patents
Info
- Publication number
- BE649983A BE649983A BE649983DA BE649983A BE 649983 A BE649983 A BE 649983A BE 649983D A BE649983D A BE 649983DA BE 649983 A BE649983 A BE 649983A
- Authority
- BE
- Belgium
- Prior art keywords
- frame
- cutting
- machine
- carriage
- desc
- Prior art date
Links
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 240000001890 Ribes hudsonianum Species 0.000 description 2
- 235000016954 Ribes hudsonianum Nutrition 0.000 description 2
- 235000001466 Ribes nigrum Nutrition 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 210000004013 groin Anatomy 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/22—Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE649983A true BE649983A (ru) |
Family
ID=205855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE649983D BE649983A (ru) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE649983A (ru) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125768A (en) * | 1988-04-27 | 1992-06-30 | Ilomaeki Valto | Method and apparatus for the production of underground pipelines |
-
0
- BE BE649983D patent/BE649983A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125768A (en) * | 1988-04-27 | 1992-06-30 | Ilomaeki Valto | Method and apparatus for the production of underground pipelines |
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