FR855963A - Feeding device for rock drills - Google Patents
Feeding device for rock drillsInfo
- Publication number
- FR855963A FR855963A FR855963DA FR855963A FR 855963 A FR855963 A FR 855963A FR 855963D A FR855963D A FR 855963DA FR 855963 A FR855963 A FR 855963A
- Authority
- FR
- France
- Prior art keywords
- feeding device
- rock drills
- drills
- rock
- feeding
- 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
- 239000011435 rock 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
- E21B19/086—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 with a fluid-actuated cylinder
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)
- Actuator (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US529694XA | 1938-06-11 | 1938-06-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR855963A true FR855963A (en) | 1940-05-24 |
Family
ID=21981076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR855963D Expired FR855963A (en) | 1938-06-11 | 1939-06-08 | Feeding device for rock drills |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE434813A (en) |
FR (1) | FR855963A (en) |
GB (1) | GB529694A (en) |
-
0
- BE BE434813D patent/BE434813A/xx unknown
-
1939
- 1939-06-06 GB GB16621/39A patent/GB529694A/en not_active Expired
- 1939-06-08 FR FR855963D patent/FR855963A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB529694A (en) | 1940-11-26 |
BE434813A (en) |
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