GB667636A - Wet and dry backhead for rock drills - Google Patents
Wet and dry backhead for rock drillsInfo
- Publication number
- GB667636A GB667636A GB5985/50A GB598550A GB667636A GB 667636 A GB667636 A GB 667636A GB 5985/50 A GB5985/50 A GB 5985/50A GB 598550 A GB598550 A GB 598550A GB 667636 A GB667636 A GB 667636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill
- throttle valve
- tube
- wet
- passage
- 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 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
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
- E21B21/011—Dust eliminating or dust removing while drilling
- E21B21/013—Dust eliminating or dust removing while drilling by liquids
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
667,636. Percussive drills. CHICAGO PNEUMATIC TOOL CO. March 9, 1950 [April 29, 1949], No. 5985/50. Class 124. In the back head of a percussive drill having a throttle valve and an air reservoir, a passage is provided from the reservoir to a tube leading to the working end of the drill, passageways lead from a water supply to this tube, and there is provided two sets of plugs, one to allow the drill to operate dry, and the other for wet operation. As shown, air is led from a throttle valve 17 to a reservoir 42 which is connected by passages 54, 55 and 57 to a central tube 62 leading to the drill end. A water supply may be connected to a threaded bore 63 and the water may pass by way of passages 65, 68 and 67 to the tube 62. When operating as a wet drill, a plug 75 prevents air passing through the passage 55. The throttle valve 17 may be used as a watercontrol valve by the action of a cam 86 on its stem on the stem of a valve inserted in a sleeve 77 in the passage 68. A spring-loaded pawl 47 may engage a ratchet on the throttle valve to maintain it in a particular position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US667636XA | 1949-04-29 | 1949-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB667636A true GB667636A (en) | 1952-03-05 |
Family
ID=22071537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5985/50A Expired GB667636A (en) | 1949-04-29 | 1950-03-09 | Wet and dry backhead for rock drills |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB667636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1157177B (en) * | 1958-07-08 | 1963-11-14 | Cons Pneumatic Tool Company Lt | Pneumatic hammer drill controlled by the flushing water pressure |
| DE1176587B (en) * | 1957-10-16 | 1964-08-27 | Preussische Bergwerks Und Huet | Rotary hammer with coaxial detergent tube |
-
1950
- 1950-03-09 GB GB5985/50A patent/GB667636A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176587B (en) * | 1957-10-16 | 1964-08-27 | Preussische Bergwerks Und Huet | Rotary hammer with coaxial detergent tube |
| DE1157177B (en) * | 1958-07-08 | 1963-11-14 | Cons Pneumatic Tool Company Lt | Pneumatic hammer drill controlled by the flushing water pressure |
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