BE567692A - - Google Patents
Info
- Publication number
- BE567692A BE567692A BE567692DA BE567692A BE 567692 A BE567692 A BE 567692A BE 567692D A BE567692D A BE 567692DA BE 567692 A BE567692 A BE 567692A
- Authority
- BE
- Belgium
- Prior art keywords
- machine
- coal
- cutting
- chain
- allow
- Prior art date
Links
- 239000003245 coal Substances 0.000 claims description 25
- 230000002441 reversible effect Effects 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection 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
- E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
- E21C27/12—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools
- E21C27/124—Machines which completely free the mineral from the seam by both slitting and breaking-down breaking-down effected by acting on the vertical face of the mineral, e.g. by percussive tools with rotatable cutters provided with breaking-down members
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)
- Sawing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE567692A true BE567692A (enExample) |
Family
ID=187320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE567692D BE567692A (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE567692A (enExample) |
-
0
- BE BE567692D patent/BE567692A/fr unknown
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