GB560422A - Improvements in pneumatic rock drills - Google Patents
Improvements in pneumatic rock drillsInfo
- Publication number
- GB560422A GB560422A GB18012/42A GB1801242A GB560422A GB 560422 A GB560422 A GB 560422A GB 18012/42 A GB18012/42 A GB 18012/42A GB 1801242 A GB1801242 A GB 1801242A GB 560422 A GB560422 A GB 560422A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- additional
- opening
- piston
- pneumatic rock
- 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
- 239000011435 rock Substances 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 239000012530 fluid Substances 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
560,422. Pneumatic rock drills. HOLMAN BROS., Ltd., DOWNING, R. E., and TREGONING, A. H. Dec. 18, 1942, No. 18012. [Class 124] [Also in Group XXIX] In a pneumatic rock drill provided with valve mechanism whereby the supply of air or other operating fluid is possible only when dust-laying water under sufficient pressure is being supplied to the drill steel, an additional rotary air control valve housed within the hand-operated main rotary air control valve renders the latter ineffective until the water pressure is sufficient to maintain the additional valve in its operative position. In the form shown, the main valve 2 operated by a handle 11 houses an additional spring-pressed rotary sleeve valve 6 with an opening 7 to register with an opening 8 in the main valve which communicates with the operating mechanism by a,passage 30. Some of the water supplied by a pipe 22 for the central opening 29 of the drill steel moves a piston head 18 in a cylinder 25 against the air pressure on the top surface 21 of a piston 19, a rack 17 connected to the piston engaging a pinion 9 on the valve 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18012/42A GB560422A (en) | 1942-12-18 | 1942-12-18 | Improvements in pneumatic rock drills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18012/42A GB560422A (en) | 1942-12-18 | 1942-12-18 | Improvements in pneumatic rock drills |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB560422A true GB560422A (en) | 1944-04-04 |
Family
ID=10105111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18012/42A Expired GB560422A (en) | 1942-12-18 | 1942-12-18 | Improvements in pneumatic rock drills |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB560422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1010930B (en) * | 1955-05-18 | 1957-06-27 | Hauhinco Maschf | Device for controlling the compressed air supply to mining hammers as a function of the pressurized water supply |
| DE970954C (en) * | 1954-07-09 | 1958-11-20 | Rudolf Hausherr & Soehne G M B | Air-water mixing device for hydraulic breakers for wet operation |
-
1942
- 1942-12-18 GB GB18012/42A patent/GB560422A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE970954C (en) * | 1954-07-09 | 1958-11-20 | Rudolf Hausherr & Soehne G M B | Air-water mixing device for hydraulic breakers for wet operation |
| DE1010930B (en) * | 1955-05-18 | 1957-06-27 | Hauhinco Maschf | Device for controlling the compressed air supply to mining hammers as a function of the pressurized water supply |
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