DE172561C - - Google Patents
Info
- Publication number
- DE172561C DE172561C DENDAT172561D DE172561DA DE172561C DE 172561 C DE172561 C DE 172561C DE NDAT172561 D DENDAT172561 D DE NDAT172561D DE 172561D A DE172561D A DE 172561DA DE 172561 C DE172561 C DE 172561C
- Authority
- DE
- Germany
- Prior art keywords
- cutting
- different
- disks
- drills
- wheel
- 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.)
- Active
Links
- 241000131971 Bradyrhizobiaceae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
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)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE172561C true DE172561C (US20080094685A1-20080424-C00004.png) |
Family
ID=437442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT172561D Active DE172561C (US20080094685A1-20080424-C00004.png) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE172561C (US20080094685A1-20080424-C00004.png) |
-
0
- DE DENDAT172561D patent/DE172561C/de active Active
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