GB161761A - Improvements in percussive rock drills and like fluid pressure operated tools - Google Patents
Improvements in percussive rock drills and like fluid pressure operated toolsInfo
- Publication number
- GB161761A GB161761A GB364020A GB364020A GB161761A GB 161761 A GB161761 A GB 161761A GB 364020 A GB364020 A GB 364020A GB 364020 A GB364020 A GB 364020A GB 161761 A GB161761 A GB 161761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid pressure
- cylinder
- pressure operated
- operated tools
- rock drills
- 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
161,761. Rayner, G. H. T., and Rayner, P. Feb. 6, 1920. Addition to 138,304. Fluid-actuated gears; slide valves, cylindrical and piston.-The forward exhaust ports described in the parent Specification are dispensed with, the rearward ports c serve both the front and rear ends of the cylinder and co-operate with an auxiliary exhaust port e controlled by the valve f. The auxiliary exhaust groove e<2> communicates with the right-hand of the cylinder by a groove e<3>. Modified forms of the valve f, which permit a short valve stroke and the release of air trapped in the cylinder, are described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB364020A GB161761A (en) | 1920-02-06 | 1920-02-06 | Improvements in percussive rock drills and like fluid pressure operated tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB364020A GB161761A (en) | 1920-02-06 | 1920-02-06 | Improvements in percussive rock drills and like fluid pressure operated tools |
Publications (1)
Publication Number | Publication Date |
---|---|
GB161761A true GB161761A (en) | 1921-04-21 |
Family
ID=9762123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB364020A Expired GB161761A (en) | 1920-02-06 | 1920-02-06 | Improvements in percussive rock drills and like fluid pressure operated tools |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB161761A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2852474B1 (en) * | 2012-05-23 | 2019-03-06 | Construction Tools GmbH | Percussion device |
CN111270982A (en) * | 2020-03-12 | 2020-06-12 | 姚佳锋 | Air-leg rock drill |
-
1920
- 1920-02-06 GB GB364020A patent/GB161761A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2852474B1 (en) * | 2012-05-23 | 2019-03-06 | Construction Tools GmbH | Percussion device |
CN111270982A (en) * | 2020-03-12 | 2020-06-12 | 姚佳锋 | Air-leg rock drill |
CN111270982B (en) * | 2020-03-12 | 2021-05-14 | 江苏合海集团股份有限公司 | Air-leg rock drill |
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