GB755260A - Hollow drill for the impact drilling of rocks and other minerals - Google Patents
Hollow drill for the impact drilling of rocks and other mineralsInfo
- Publication number
- GB755260A GB755260A GB7943/54A GB794354A GB755260A GB 755260 A GB755260 A GB 755260A GB 7943/54 A GB7943/54 A GB 7943/54A GB 794354 A GB794354 A GB 794354A GB 755260 A GB755260 A GB 755260A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bit
- hollow
- drill
- spigot
- shank
- 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
- 238000005553 drilling Methods 0.000 title abstract 3
- 229910052500 inorganic mineral Inorganic materials 0.000 title 1
- 239000011707 mineral Substances 0.000 title 1
- 239000011435 rock Substances 0.000 title 1
- 230000001681 protective effect Effects 0.000 abstract 2
- 239000002699 waste material 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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
755,260. Percussive drills. HEMSCHEIDT., H., [trading as HEMSCHEIDT MASCHINENFABRIK, H.J. March 18, 1954 [March 21, 1953; Feb. 12, 1954], No. 7943/54. Class 124 A hollow percussive drill comprises a drill shank, a drill bit, a spigot for connection to a drilling implement, thesecomponents being provided with internal passageways for the removal of drilling waste, and a protective tube making a clearance fit in respect to the part of the drill between the bit and the spigot and having an external diameter slightly less than that of the bit. As shown, the drill comprises a hollow shank 1 having a tapered portion at each end, a hollow bit 3 being secured at one end and a hollow spigot 2 at the other. Intermediate the bit and the spigot a protective tube 5 is fitted in such a manner as to allow limited longitudinal movement. A hollow connecting element with ratchet teeth may be fitted between the bit and the shank (Fig. 2, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE755260X | 1953-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB755260A true GB755260A (en) | 1956-08-22 |
Family
ID=6659568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7943/54A Expired GB755260A (en) | 1953-03-21 | 1954-03-18 | Hollow drill for the impact drilling of rocks and other minerals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB755260A (en) |
-
1954
- 1954-03-18 GB GB7943/54A patent/GB755260A/en not_active Expired
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