GB825396A - Improvements in pneumatic percussion tools - Google Patents
Improvements in pneumatic percussion toolsInfo
- Publication number
- GB825396A GB825396A GB15644/58A GB1564458A GB825396A GB 825396 A GB825396 A GB 825396A GB 15644/58 A GB15644/58 A GB 15644/58A GB 1564458 A GB1564458 A GB 1564458A GB 825396 A GB825396 A GB 825396A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- outlets
- air
- piston
- main
- 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
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/11—Arrangements of noise-damping means
- B25D17/12—Arrangements of noise-damping means of exhaust silencers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
825,396. Compressed-air engines; cylinders. ATLAS COPCO A.B. May 15, 1958 [May 21, 1957], No. 15644/58. Classes 122 (1) and 122 (3). A pneumatic percussion tool comprises a cylinder 1, a hammer piston 11, first and second chambers 12, 13 for compressed-air producing the working and return strokes respectively, valve means 8 for admitting air to the first chamber in which piston - controlled main and auxiliary outlets 19 and 22, 27 are formed in the cylinder wall, the total area of the outlets 22, 27 being less than that of the main outlets 19 and disposed so as to be uncovered by the piston during the working stroke before the main outlet. The cylinder 1, which is of steel and mounted in an aluminium casing 2, is also provided with a further series of auxiliary outlets 23 to be uncovered similarly on the return stroke of the piston. The holes 19, 22, 23, 27 may be evenly distributed as shown or in zig-zag lines, a separate series of main outlets 19 may be provided for each chamber 12, 13 and the auxiliary outlets 22, 27 in the chamber 12 may consist of one series of holes only. For the working stroke, compressed-air is admitted into a valve chamber 7, through the valve 8 and passages 14 into the chamber 12 and, for the return stroke, through passages 15 and port 16 into the chamber 13, the air being exhausted to atmosphere through a chamber 24.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US825396XA | 1957-05-21 | 1957-05-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB825396A true GB825396A (en) | 1959-12-16 |
Family
ID=22171832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15644/58A Expired GB825396A (en) | 1957-05-21 | 1958-05-15 | Improvements in pneumatic percussion tools |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB825396A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0104156A2 (en) * | 1982-09-16 | 1984-03-28 | Atlas Copco Aktiebolag | Pneumatically operated impact tool |
-
1958
- 1958-05-15 GB GB15644/58A patent/GB825396A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0104156A2 (en) * | 1982-09-16 | 1984-03-28 | Atlas Copco Aktiebolag | Pneumatically operated impact tool |
EP0104156A3 (en) * | 1982-09-16 | 1984-08-22 | Atlas Copco Aktiebolag | Pneumatically operated impact tool |
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