GB704247A - Improvements relating to mechanically operated hammers - Google Patents
Improvements relating to mechanically operated hammersInfo
- Publication number
- GB704247A GB704247A GB27952/50A GB2795250A GB704247A GB 704247 A GB704247 A GB 704247A GB 27952/50 A GB27952/50 A GB 27952/50A GB 2795250 A GB2795250 A GB 2795250A GB 704247 A GB704247 A GB 704247A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- sleeve
- shaft
- clutch
- cam
- 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
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/10—Means for driving the impulse member comprising a cam mechanism
- B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
- B25D11/106—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool cam member and cam follower having the same shape
-
- 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
- B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
704,247. Percussive drills. RAWLPLUG CO., Ltd. Nov. 1, 1951 [Nov. 15, 1950], No. 27952/50. Class 124 A mechanically operated hammer comprises a casing, a cam member fixed to a sleeve assembly which is movable axially but not rotatably in the casing, a hammer member operated by the sleeve, a driving shaft rotatable but not axially movable in the casing, a cam on the forward end of this shaft co-acting with the cam on the sleeve, a spring acting between the sleeve and an abutment in the casing, a clutch between the driving shaft and a second shaft, and a spring acting to hold the members of the clutch in the disengaged position. As shown, a shaft 8, rotatably and axially movable at the rear end of a casing 1, has at its inner end a clutch member 7 co-acting with a clutch member 6 on a shaft having two parts 4 and 5 rotatable but not axially movable in the casing. A spring 10 urges the clutch members into the disengaged position. On the forward end of the part 5 of the shaft is fixed a cam 12 which co-acts with a cam 13 fixed in a sleeve 14 which may move axially in the casing but is prevented from rotating by a spline 16 sliding in a slot 15 in the sleeve. A spring. 25, which abuts an adjustable stop 26 in the casing, urges the cams 12, 13 into contact. Mounted on the forward end of the sleeve is a hammer 17 which strikes an anvil 19 which in turn strikes a tool holder 21 held in the casing by a ball 23 in a groove 22. The tool holder may easily be removed from the casing. A knurled sleeve 30 on the outside of the casing may be attached to the stop 26 by pins 27 moving in a slot in the casing and having three positions of rest to adjust the compression on the spring 25. A handle 34 may be pivoted to a strap 35 surrounding the casing. The end 11 of the shaft 8 may be attached to a coupling on an electric motor and the whole pressed against the work when the clutch 6, 7 will engage and set the percussive action into operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB306434X | 1950-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB704247A true GB704247A (en) | 1954-02-17 |
Family
ID=10310842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27952/50A Expired GB704247A (en) | 1950-11-15 | 1950-11-15 | Improvements relating to mechanically operated hammers |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE507080A (en) |
| CH (1) | CH306434A (en) |
| DE (1) | DE880280C (en) |
| FR (1) | FR1045092A (en) |
| GB (1) | GB704247A (en) |
-
0
- BE BE507080D patent/BE507080A/xx unknown
-
1950
- 1950-11-15 GB GB27952/50A patent/GB704247A/en not_active Expired
-
1951
- 1951-11-13 FR FR1045092D patent/FR1045092A/en not_active Expired
- 1951-11-14 CH CH306434D patent/CH306434A/en unknown
- 1951-11-15 DE DER7646A patent/DE880280C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH306434A (en) | 1955-04-15 |
| DE880280C (en) | 1953-06-18 |
| BE507080A (en) | |
| FR1045092A (en) | 1953-11-24 |
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