GB624071A - Improvements in or relating to dustless rock drills - Google Patents
Improvements in or relating to dustless rock drillsInfo
- Publication number
- GB624071A GB624071A GB15168/47A GB1516847A GB624071A GB 624071 A GB624071 A GB 624071A GB 15168/47 A GB15168/47 A GB 15168/47A GB 1516847 A GB1516847 A GB 1516847A GB 624071 A GB624071 A GB 624071A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity
- passage
- fluid
- tube
- conduit
- 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 abstract 3
- 239000012530 fluid Substances 0.000 abstract 5
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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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)
- Earth Drilling (AREA)
Abstract
624,071. Percussive drills. INGERSOLLRAND CO. June 9, 1947, No. 15168. Convention date. Nov. 19. 1941. [Class 124] In a fluid actuated rock drill having means for maintaining sub-atmospheric pressure in a cavity in the casing by the introduction of a jet of pressure fluid into a passage connected with cavity by a conduit, the conduit is a tube co-axial with the cavity and extends to the rear end of the drill casing. As shown, a cavity 36 between a chuck nut 35 and a chuck bush 37 communicates with a passage 63 in the head of a rock drill by a tube 35 coaxial with the cavity and which may surround a tube 46 for cleansing fluid. A passage 65 fitted with a needle-valve 67 and connected to a source of pressure fluid forms an ejector to maintain a sub-atmospheric pressure in the cavity 36. A washer 49 prevents leakage of cleansing fluid into the passage 63.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US624071XA | 1941-11-19 | 1941-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB624071A true GB624071A (en) | 1949-05-26 |
Family
ID=22042284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15168/47A Expired GB624071A (en) | 1941-11-19 | 1947-06-09 | Improvements in or relating to dustless rock drills |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB624071A (en) |
-
1947
- 1947-06-09 GB GB15168/47A patent/GB624071A/en not_active Expired
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