GB375204A - Fluid pressure hammer - Google Patents
Fluid pressure hammerInfo
- Publication number
- GB375204A GB375204A GB34632/31A GB3463231A GB375204A GB 375204 A GB375204 A GB 375204A GB 34632/31 A GB34632/31 A GB 34632/31A GB 3463231 A GB3463231 A GB 3463231A GB 375204 A GB375204 A GB 375204A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cylinder
- seats
- ports
- fluid
- 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
- B25D9/20—Valve arrangements therefor involving a tubular-type slide valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D2209/005—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is coaxial with the piston
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
375,204. Valve-gear for percussive tools. CHICAGO PNEUMATIC TOOL CO., 6, East 44th Street, New York, U.S.A. -(Assignees of Stevens, E. W. ; 6201, 2nd Boulevard, Detroit, Michigan, U.S.A.) Dec. 14, 1931, No. 34632. Convention date, Jan. 12, 1931. [Class 122 (ii).] In fluid-pressure actuated percussive tools wherein a simple ring lift valve 9 is mounted directly on the cylinder or on a closure member thereof as described in Specification 358,398 and moves transversely of the cylinder and engages seats thereon to control the admission to the two ends of the cylinder, the exhaust being controlled by the piston over-running ports in the cylinder wall, the seats of the valve are elongated so that the valve can move longitudinally as well as radially. The fluid pressure automatically centres the valve longitudinally and passes over both edges to the cylinder. The reduced portion 7a of the cylinder engaged by the valve is further reduced eccentrically to provide seats 15, 16 which are connected by ports 11a 12 with the forward and rear cylinder ends respectively. The inner edges 9a of the valve are bevelled to permit easy access of fluid. The same valve may be used for hammers of different length of stroke. The valve is shown applied to a percussive rock drill in Fig. 5. The cylinder end is closed by a chest housing the valve and provided with ports communicating with its ends. A ratchet ring is housed beyond the chest in a chamber separated therefrom by a ring 28 through which the rifle bar 31 passes. A hand-operated, spring-pressed plunger 42 is housed on the side of the drill, and may be operated to lock the valve to blow the hole drilled.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US508126A US1931042A (en) | 1931-01-12 | 1931-01-12 | Fluid pressure hammer |
Publications (1)
Publication Number | Publication Date |
---|---|
GB375204A true GB375204A (en) | 1932-06-23 |
Family
ID=24021503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34632/31A Expired GB375204A (en) | 1931-01-12 | 1931-12-14 | Fluid pressure hammer |
Country Status (4)
Country | Link |
---|---|
US (1) | US1931042A (en) |
DE (1) | DE579202C (en) |
FR (1) | FR728147A (en) |
GB (1) | GB375204A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU655824A1 (en) * | 1976-07-07 | 1979-04-05 | Институт Горного Дела Со Ан Ссср | Pneumatic percussion device for drilling boreholes |
AT392752B (en) * | 1984-01-05 | 1991-06-10 | Voest Alpine Stahl | PNEUMATIC HAMMER |
AT506424B1 (en) * | 2008-02-12 | 2010-09-15 | Bbg Baugeraete Gmbh | AIR HAMMER |
-
1931
- 1931-01-12 US US508126A patent/US1931042A/en not_active Expired - Lifetime
- 1931-12-11 FR FR728147D patent/FR728147A/en not_active Expired
- 1931-12-14 GB GB34632/31A patent/GB375204A/en not_active Expired
- 1931-12-22 DE DEC45793D patent/DE579202C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR728147A (en) | 1932-06-29 |
DE579202C (en) | 1933-06-23 |
US1931042A (en) | 1933-10-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2947519A (en) | Percussion drill | |
GB375204A (en) | Fluid pressure hammer | |
US2051839A (en) | Pressure fluid motor | |
GB359779A (en) | Improvements in valve for rock drills | |
US2043352A (en) | Rotation mechanism | |
GB951919A (en) | Improvements in percussion tools incorporating a combustion cylinder for driving a reciprocable hammer piston | |
GB329921A (en) | ||
US2195204A (en) | Pressure fluid motor | |
GB338696A (en) | Improvements in or relating to means for operating the distributing slide valve of pressure air operated hammers | |
US1907129A (en) | Long stroke hammer | |
US1635475A (en) | Drilling machine | |
GB219530A (en) | Improvements in and relating to percussive rock drills and like fluid pressure operated tools | |
US1905474A (en) | Safety device for rock drills | |
GB171146A (en) | Improvements in fluid pressure operated percussive tools | |
US2270743A (en) | Pressure fluid motor | |
GB194632A (en) | Improvements in or relating to valves for rock drills and like fluid pressure operated tools | |
GB597920A (en) | Distributing valve for rock drills or like percussive tools | |
US2195203A (en) | Pressure fluid motor | |
GB161761A (en) | Improvements in percussive rock drills and like fluid pressure operated tools | |
GB321182A (en) | Improvements in, or relating to, rock drills and like fluid pressure operated tools | |
GB328235A (en) | Improvements in or relating to rock drills and like tools | |
GB446208A (en) | Improved pneumatic percussive tool | |
GB445063A (en) | Improvements relating to pneumatic hammers | |
GB255704A (en) | Improvement in rock drill | |
GB172243A (en) | Improvements in or relating to valve apparatus for rock drills and like fluid pressure operated tools |