GB668991A - Improvements in rotary drill bits - Google Patents
Improvements in rotary drill bitsInfo
- Publication number
- GB668991A GB668991A GB10951/50A GB1095150A GB668991A GB 668991 A GB668991 A GB 668991A GB 10951/50 A GB10951/50 A GB 10951/50A GB 1095150 A GB1095150 A GB 1095150A GB 668991 A GB668991 A GB 668991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insert
- wings
- rotary drill
- inserts
- faces
- 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
- 239000002826 coolant Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 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
- 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)
- Earth Drilling (AREA)
Abstract
668,991. Drilling-bits. BOART PRODUCTS (SOUTH AFRICA), Ltd. May 3, 1950 [Nov. 8, 1949], No. 10951/50. Class 83 (iii). A rotary drill-bit comprises a metal body having two wings 5 separated by a slot, a single insert 7 of hard material secured to the wings and accommodated partly within the slot, the insert presenting obliquely inclined cutting- faces 11 and diametrally-opposed lateral reaming edges 2, a stem 16 for attachment to a drillrod line, and a coolant passage 17 in the stem connected with two passages 18 opening into recesses formed between the wings and the faces of the insert. The insert is of tungsten carbide and is brazed to the body. It may be formed in two parts which may be mounted with a space 15, Fig. 2, between them. When two inserts are used, they may have recesses 19, Fig. 6, or projections 21, Fig. 8, to assist in securing them to the body. The inserts may be cast or sintered.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA668991X | 1949-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB668991A true GB668991A (en) | 1952-03-26 |
Family
ID=25561058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10951/50A Expired GB668991A (en) | 1949-11-08 | 1950-05-03 | Improvements in rotary drill bits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB668991A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1002264B (en) * | 1952-09-29 | 1957-02-14 | Josef Dionisotti | Rock drill bit with detachably inserted cutting tools |
| US2815933A (en) * | 1951-10-02 | 1957-12-10 | Dionisotti Joseph | Detachable drill bit insert for rock boring tools |
| US4165790A (en) * | 1976-12-10 | 1979-08-28 | Fansteel Inc. | Roof drill bit |
| US4190125A (en) * | 1977-11-09 | 1980-02-26 | Fansteel Inc. | Drill bit and steel combination for improved fluid flow |
| CN110886586A (en) * | 2019-12-18 | 2020-03-17 | 贵州高峰石油机械股份有限公司 | Method for improving cutting efficiency of grinding shoe and fracture centering grinding and milling shoe used in method |
-
1950
- 1950-05-03 GB GB10951/50A patent/GB668991A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2815933A (en) * | 1951-10-02 | 1957-12-10 | Dionisotti Joseph | Detachable drill bit insert for rock boring tools |
| DE1002264B (en) * | 1952-09-29 | 1957-02-14 | Josef Dionisotti | Rock drill bit with detachably inserted cutting tools |
| US4165790A (en) * | 1976-12-10 | 1979-08-28 | Fansteel Inc. | Roof drill bit |
| US4190125A (en) * | 1977-11-09 | 1980-02-26 | Fansteel Inc. | Drill bit and steel combination for improved fluid flow |
| CN110886586A (en) * | 2019-12-18 | 2020-03-17 | 贵州高峰石油机械股份有限公司 | Method for improving cutting efficiency of grinding shoe and fracture centering grinding and milling shoe used in method |
| CN110886586B (en) * | 2019-12-18 | 2023-12-12 | 贵州高峰石油机械股份有限公司 | Method for improving cutting efficiency of mill shoes and fracture centering mill shoes used by method |
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