GB138032A - Improvements in valves and valve gear for rock drills and like percussive tools - Google Patents
Improvements in valves and valve gear for rock drills and like percussive toolsInfo
- Publication number
- GB138032A GB138032A GB18644/19A GB1864419A GB138032A GB 138032 A GB138032 A GB 138032A GB 18644/19 A GB18644/19 A GB 18644/19A GB 1864419 A GB1864419 A GB 1864419A GB 138032 A GB138032 A GB 138032A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- passages
- fluid
- valves
- cylinder
- 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
- 239000012530 fluid Substances 0.000 abstract 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 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
- E21B1/00—Percussion drilling
- E21B1/12—Percussion drilling with a reciprocating impulse member
- E21B1/24—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure
- E21B1/30—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
138,032. Rayner, G. H. T., and Rayner, P. July 28, 1919. Fluid-actuated gears.-The valve is provided with a central enlarged head a and two perforated heads b, b<1> on either side which control the cylinder exhaust through ports m, m<1>, m<2>. It is moved by compression and by pressure-fluid from the cylinder passing through one or the other of piston-controlled passages j, i and the corresponding perforated head b<1>, or b to act on one of the faces of the head a. The admission to the cylinder ends is controlled by piston extensions c, c' which engage ported blocks e, l. In the construction shown, during the motion of the valve fluid passes from one face of the head a to the other since it is narrower than the port m<1>. In a modification, four exhaust passages are provided, and the head a is wider than either of them. One of the passages b<3> in each of the heads b, b<1> is provided with a transverse outlet b<4> to dispose of leakage along the pistons c, c'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18644/19A GB138032A (en) | 1919-07-28 | 1919-07-28 | Improvements in valves and valve gear for rock drills and like percussive tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18644/19A GB138032A (en) | 1919-07-28 | 1919-07-28 | Improvements in valves and valve gear for rock drills and like percussive tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB138032A true GB138032A (en) | 1920-01-29 |
Family
ID=10115986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18644/19A Expired GB138032A (en) | 1919-07-28 | 1919-07-28 | Improvements in valves and valve gear for rock drills and like percussive tools |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB138032A (en) |
-
1919
- 1919-07-28 GB GB18644/19A patent/GB138032A/en not_active Expired
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