DE177004C - - Google Patents
Info
- Publication number
- DE177004C DE177004C DENDAT177004D DE177004DA DE177004C DE 177004 C DE177004 C DE 177004C DE NDAT177004 D DENDAT177004 D DE NDAT177004D DE 177004D A DE177004D A DE 177004DA DE 177004 C DE177004 C DE 177004C
- Authority
- DE
- Germany
- Prior art keywords
- same
- die
- core pieces
- shape
- drill
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/02—Making tools or tool parts, e.g. pliers drilling-tools or other for making or working on holes
- B21K5/06—Dressing, e.g. sharpening rock drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE177004C true DE177004C (enrdf_load_stackoverflow) |
Family
ID=441511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT177004D Active DE177004C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE177004C (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293123B (de) * | 1957-04-22 | 1969-04-24 | Noma Lites Inc | Mehrteiliges Gesenk |
-
0
- DE DENDAT177004D patent/DE177004C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293123B (de) * | 1957-04-22 | 1969-04-24 | Noma Lites Inc | Mehrteiliges Gesenk |
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