GB250677A - Improvements in or relating to distributing-valves for rock drills and like mechanisms - Google Patents
Improvements in or relating to distributing-valves for rock drills and like mechanismsInfo
- Publication number
- GB250677A GB250677A GB141425A GB141425A GB250677A GB 250677 A GB250677 A GB 250677A GB 141425 A GB141425 A GB 141425A GB 141425 A GB141425 A GB 141425A GB 250677 A GB250677 A GB 250677A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- distributing
- valves
- relating
- mechanisms
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
- B25D9/16—Valve arrangements therefor
- B25D9/18—Valve arrangements therefor involving a piston-type slide valve
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
250,677. Holman, J. L., and Holman, A. T. Jan. 16, 1925. Valve chests and casings.-Fluid is distributed in a percussive drill or like tool by a double-ended piston valve 16, 17 which works in coaxial liners 19, 20 separated by a two-part bush 22 which forms a bearing for the spindle 18. The liner 19 has an eccentric projection 23 engaging a hole 24 in the casing; the liner 20 is recessed to receive the end of a spring 26 housed in a plug 27 which ensures the closure of the valve cylinder when the fit of the cover common to the cylinder and valve chest is defective. The supply valve 29 is cast integral with the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB141425A GB250677A (en) | 1925-01-16 | 1925-01-16 | Improvements in or relating to distributing-valves for rock drills and like mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB141425A GB250677A (en) | 1925-01-16 | 1925-01-16 | Improvements in or relating to distributing-valves for rock drills and like mechanisms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB250677A true GB250677A (en) | 1926-04-16 |
Family
ID=9721601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB141425A Expired GB250677A (en) | 1925-01-16 | 1925-01-16 | Improvements in or relating to distributing-valves for rock drills and like mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB250677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014084776A1 (en) * | 2012-11-28 | 2014-06-05 | Atlas Copco Rock Drills Ab | Device in a rock drilling machine and rock drilling machine |
-
1925
- 1925-01-16 GB GB141425A patent/GB250677A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014084776A1 (en) * | 2012-11-28 | 2014-06-05 | Atlas Copco Rock Drills Ab | Device in a rock drilling machine and rock drilling machine |
| CN104822496A (en) * | 2012-11-28 | 2015-08-05 | 阿特拉斯·科普柯凿岩设备有限公司 | Device in rock drilling machine and rock drilling machine |
| US9937611B2 (en) | 2012-11-28 | 2018-04-10 | Atlas Copco Rock Drills Ab | Device in a rock drilling machine and rock drilling machine |
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