GB474511A - Improvements in or relating to electrically-operated hand hammers - Google Patents
Improvements in or relating to electrically-operated hand hammersInfo
- Publication number
- GB474511A GB474511A GB6265/37A GB626537A GB474511A GB 474511 A GB474511 A GB 474511A GB 6265/37 A GB6265/37 A GB 6265/37A GB 626537 A GB626537 A GB 626537A GB 474511 A GB474511 A GB 474511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrically
- drill
- march
- rotated
- shaft
- 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
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910001315 Tool steel Inorganic materials 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000010959 steel 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
- E21B11/00—Other drilling tools
- E21B11/005—Hand operated drilling tools
-
- 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)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
Abstract
474,511. Percussive drills. BOSCH AKT.-GES., R. March 3, 1937, No. 6265. Convention date, March 3, 1936. [Class 124] An electrically - operated percussive tool has a detachable front portion 3 in which is mounted a shaft 10 carrying the tool steel 7 on its outer end. A bevel wheel 14, axially displaceable on the shaft 11 gears with a wheel 16 rotated by a crank handle 9, allows the drill to be rotated by hand in addition to the rotation of the normal drill twist mechanism. A nozzle 4 to which an air blower is connected, allows blowing air to enter the drill steel bore. The drift hole 13 is closed by a rubber band 22.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE474511X | 1936-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB474511A true GB474511A (en) | 1937-11-02 |
Family
ID=6541729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6265/37A Expired GB474511A (en) | 1936-03-03 | 1937-03-03 | Improvements in or relating to electrically-operated hand hammers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB474511A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2189423A (en) * | 1986-03-18 | 1987-10-28 | Dowty Mining Equipment Ltd | Rock drill assemblies |
-
1937
- 1937-03-03 GB GB6265/37A patent/GB474511A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2189423A (en) * | 1986-03-18 | 1987-10-28 | Dowty Mining Equipment Ltd | Rock drill assemblies |
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