GB644145A - Improvements in drill bits for hammer drills having hard metal cutting edges and hard metal bodies forming such cutting edges - Google Patents
Improvements in drill bits for hammer drills having hard metal cutting edges and hard metal bodies forming such cutting edgesInfo
- Publication number
- GB644145A GB644145A GB3250647A GB3250647A GB644145A GB 644145 A GB644145 A GB 644145A GB 3250647 A GB3250647 A GB 3250647A GB 3250647 A GB3250647 A GB 3250647A GB 644145 A GB644145 A GB 644145A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hard metal
- cutting edges
- insert
- drill bits
- bodies forming
- 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
- 239000002184 metal Substances 0.000 title 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
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)
- Drilling Tools (AREA)
Abstract
644,145. Percussive drills. AKTIEBOLAGET ATLAS DIESEL., and LARCEN, J. A. Dec. 9, 1947, No. 32506. [Class 124] A drill bit has one or more hard metal cutting inserts, permanently secured in the cutting end, which are provided with gauge producing portions at their outer radial end surfaces extending to a point between the cutting edge and half the axial height of the insert to form the maximum diameter of the bit. As shown the insert 1 may have projections 3 having curved portions 8 joining them to the base of the insert. The projections may extend along less than one third of the axial height of the insert and may have a contour similar to the normal shape of the cone formed by wear, Fig. 3 (not shown). The ratio of breadth to height of the insert may be as in Specification 643,179.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3250647A GB644145A (en) | 1947-12-09 | 1947-12-09 | Improvements in drill bits for hammer drills having hard metal cutting edges and hard metal bodies forming such cutting edges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3250647A GB644145A (en) | 1947-12-09 | 1947-12-09 | Improvements in drill bits for hammer drills having hard metal cutting edges and hard metal bodies forming such cutting edges |
Publications (1)
Publication Number | Publication Date |
---|---|
GB644145A true GB644145A (en) | 1950-10-04 |
Family
ID=10339642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3250647A Expired GB644145A (en) | 1947-12-09 | 1947-12-09 | Improvements in drill bits for hammer drills having hard metal cutting edges and hard metal bodies forming such cutting edges |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB644145A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996007011A1 (en) * | 1994-08-30 | 1996-03-07 | Reburg Patentverwertungsgesellschaft Mbh | Drilling head with cutters in arrow-shaped array |
DE10057877A1 (en) * | 2000-11-22 | 2002-05-29 | Lueken Gisela | wellhead |
-
1947
- 1947-12-09 GB GB3250647A patent/GB644145A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996007011A1 (en) * | 1994-08-30 | 1996-03-07 | Reburg Patentverwertungsgesellschaft Mbh | Drilling head with cutters in arrow-shaped array |
DE10057877A1 (en) * | 2000-11-22 | 2002-05-29 | Lueken Gisela | wellhead |
DE10057877C2 (en) * | 2000-11-22 | 2002-10-17 | Lueken Gisela | wellhead |
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