GB593076A - Improved pneumatic percussive drill - Google Patents
Improved pneumatic percussive drillInfo
- Publication number
- GB593076A GB593076A GB16111/44A GB1611144A GB593076A GB 593076 A GB593076 A GB 593076A GB 16111/44 A GB16111/44 A GB 16111/44A GB 1611144 A GB1611144 A GB 1611144A GB 593076 A GB593076 A GB 593076A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- piston
- head
- spring
- lug
- 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
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
593,076. Percussive tools. DONNELLY, F. Aug. 24, 1944, No. 16111. [Class 124] In a pneumatic percussive tool the back stroke of the piston 18 is cushioned by means of a bufferplate 14 and a spiral spring 15, whilst on the forward stroke a recess 23 in the forward side of the piston engages a rubber ring 22 carried by the recoil collar 6. The handle 17 may be gripped by hand and is also curved to fit the user's shoulder and provided with a rubber shock-absorbing pad 19. Compressed air is supplied by a valve case 1 which is screwed on to the cylinder 3 and locked thereto by a spring- pressed pin. Cleaning air is supplied to a bore 24 in the piston-rod 5 by means of a passage 25 which opens close to the piston head 18. The drill is retained in position by means of a semicircular head 35 on one end of a rod 29, the other end of which is rounded to swivel in a hole 28 in a lug 26 on the front cover 7. In the releasing position, the rod 29 rests on a split pin 31 carried by the jaws of a second lug 27, and it is surrounded by a spring 32 which engages two shoulders on a squared portion 34 of the rod and, in the retaining position, presses them into a notch in the head 35. The drill bit may have tapered sides 40, two side points 39 and a middle lead 38, or four sides or points 41 and a hollow centre 42.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB593076A true GB593076A (en) | 1947-10-08 |
Family
ID=1732069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16111/44A Expired GB593076A (en) | 1944-08-24 | Improved pneumatic percussive drill |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB593076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1063098B (en) * | 1953-07-28 | 1959-08-13 | Pleiger Maschf Paul | Compressed air feed for rock drills u. Like. With telescoping support tubes |
| US2905443A (en) * | 1956-01-23 | 1959-09-22 | Arnold H Goett | Jet pronged digging heads |
-
1944
- 1944-08-24 GB GB16111/44A patent/GB593076A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1063098B (en) * | 1953-07-28 | 1959-08-13 | Pleiger Maschf Paul | Compressed air feed for rock drills u. Like. With telescoping support tubes |
| US2905443A (en) * | 1956-01-23 | 1959-09-22 | Arnold H Goett | Jet pronged digging heads |
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