GB1026256A - Improvements in percussion tool incorporating a combustion cylinder for driving a reciprocable hammer piston - Google Patents
Improvements in percussion tool incorporating a combustion cylinder for driving a reciprocable hammer pistonInfo
- Publication number
- GB1026256A GB1026256A GB8617/65A GB861765A GB1026256A GB 1026256 A GB1026256 A GB 1026256A GB 8617/65 A GB8617/65 A GB 8617/65A GB 861765 A GB861765 A GB 861765A GB 1026256 A GB1026256 A GB 1026256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- piston
- pawl
- ratchet
- air
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B1/00—Percussion drilling
- E21B1/12—Percussion drilling with a reciprocating impulse member
- E21B1/24—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure
- E21B1/30—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure
- E21B1/32—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure working with pulses
- E21B1/34—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by air, steam or gas pressure working with pulses the impulse member being a piston of an internal-combustion engine
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
- E21B6/08—Separate drives for percussion and rotation
Abstract
1,026,256. Percussive tools. ATLAS COPCO A.B. March 1, 1965 [March 6, 1964], No. 8617/65. Heading B4C. A percussive tool comprises a hammer piston 33, 34, 35 driven on a working stroke by combustion gases in a chamber 29 and returned by a pressurized air in a pressure chamber 28, a manually-operable valve 58 being movable between a position in which pressure is built up in the chamber 28 to produce the full impact power of the piston and a further idle position in which the chamber is vented so that the piston does not effect its impact stroke. The compressed air is fed to the pressure chamber 28 by means of a piston 19 movable in a chamber 25 and connected to a piston 17 of an internal combustion engine. The tool bit 43 is mounted in a chuck 41 which can be rotated via a ratchet-and-pawl device 50, 51, the ratchet 51 being actuated by means of a shaft 53 which is oscillated via a crank pin 55 formed on the engine crank-shaft 7. The pawl may be disengaged from the ratchet and the latter locked against rotation by means of a member 64, 65 secured to the valve 58. In operation, the valve may be turned to a first position in which the pawl is disengaged and the air in the chamber 28 is directed, via flushing chamber 40, through a bore 44 in the tool bit. In a second position, the pawl is engaged with the ratchet to rotate the drill and the air is fed to the chamber 28 to actuate the hammer piston 33 on its return stroke. In a third position, the hammer piston is permitted to operate but the pawl is disengaged and in a fourth position the air in the chamber is allowed to build up and instead of operating the hammer piston, it may be arranged to feed any external device.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE285364 | 1964-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1026256A true GB1026256A (en) | 1966-04-14 |
Family
ID=20260851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8617/65A Expired GB1026256A (en) | 1964-03-06 | 1965-03-01 | Improvements in percussion tool incorporating a combustion cylinder for driving a reciprocable hammer piston |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3336986A (en) |
| CH (1) | CH421863A (en) |
| FR (1) | FR1425970A (en) |
| GB (1) | GB1026256A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453698B (en) * | 2014-12-05 | 2016-05-18 | 卢兴耐 | Gravity percussion drill |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1389539A (en) * | 1918-04-04 | 1921-08-30 | Hardsocg Wonder Drill Company | Rock-drill |
| US1709024A (en) * | 1923-12-24 | 1929-04-16 | Gardner Denver Co | Rock drill |
| US1902562A (en) * | 1931-08-06 | 1933-03-21 | Ingersoll Rand Co | Blowing device for pneumatic tools |
| US2764138A (en) * | 1953-03-02 | 1956-09-25 | Atlas Copco Ab | Percussion tools having a reciprocable hammer piston actuated by combustion gases |
| US3231028A (en) * | 1963-01-17 | 1966-01-25 | Warsop Power Tools Ltd | Multi-operational percussive tools |
-
1965
- 1965-02-24 US US434914A patent/US3336986A/en not_active Expired - Lifetime
- 1965-03-01 GB GB8617/65A patent/GB1026256A/en not_active Expired
- 1965-03-05 FR FR8082A patent/FR1425970A/en not_active Expired
- 1965-03-05 CH CH309665A patent/CH421863A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH421863A (en) | 1966-09-30 |
| US3336986A (en) | 1967-08-22 |
| FR1425970A (en) | 1966-01-24 |
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