GB339703A - Improvement in blowing device for rock drills - Google Patents
Improvement in blowing device for rock drillsInfo
- Publication number
- GB339703A GB339703A GB29469/29A GB2946929A GB339703A GB 339703 A GB339703 A GB 339703A GB 29469/29 A GB29469/29 A GB 29469/29A GB 2946929 A GB2946929 A GB 2946929A GB 339703 A GB339703 A GB 339703A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- distributing
- passage
- hole
- cylinder exhaust
- 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
- 238000007664 blowing Methods 0.000 title abstract 2
- 239000011435 rock Substances 0.000 title 1
- 239000012530 fluid Substances 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 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
- 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)
- Percussive Tools And Related Accessories (AREA)
Abstract
339,703. Ingersoll-Rand Co. Dec. 14, 1928, [Convention date]. Percussive tools. - To provide for blowing out the bore-hole by pressurefluid, the cylinder exhaust port H is controlled by a handoperated throttle . valve k which, when in the position shown, closes the cylinder exhaust and opens to atmosphere a passage q leading from the distributing - valve seat so that the distributing is held in position to close the rear inlet d and open the forward inlet c, and pressure fluid flows along the piston flutes to the bore hole. A leakage passage t may be employed to induce decreased pressure below the distributing valve and aid in holding it firmly. The passage t may be replaced by a small hole in the valve. The distributing-valve chamber b is formed in the face of the ratchet ring L surrounding the head of the twist bar, and is supplied with fluid by passages Z in the ring.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US339703XA | 1928-12-14 | 1928-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB339703A true GB339703A (en) | 1930-12-18 |
Family
ID=21873522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29469/29A Expired GB339703A (en) | 1928-12-14 | 1929-09-28 | Improvement in blowing device for rock drills |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB339703A (en) |
-
1929
- 1929-09-28 GB GB29469/29A patent/GB339703A/en not_active Expired
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