FR852957A - Holding device for charcoal punches - Google Patents
Holding device for charcoal punchesInfo
- Publication number
- FR852957A FR852957A FR852957DA FR852957A FR 852957 A FR852957 A FR 852957A FR 852957D A FR852957D A FR 852957DA FR 852957 A FR852957 A FR 852957A
- Authority
- FR
- France
- Prior art keywords
- punches
- charcoal
- holding device
- holding
- charcoal punches
- 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.)
- Expired
Links
- 239000003610 charcoal Substances 0.000 title 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/081—Screw-and-nut feed mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE852957X | 1938-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR852957A true FR852957A (en) | 1940-03-07 |
Family
ID=6786369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR852957D Expired FR852957A (en) | 1938-04-14 | 1939-04-12 | Holding device for charcoal punches |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR852957A (en) |
-
1939
- 1939-04-12 FR FR852957D patent/FR852957A/en not_active Expired
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