GB8729740D0 - Boring bits - Google Patents
Boring bitsInfo
- Publication number
- GB8729740D0 GB8729740D0 GB878729740A GB8729740A GB8729740D0 GB 8729740 D0 GB8729740 D0 GB 8729740D0 GB 878729740 A GB878729740 A GB 878729740A GB 8729740 A GB8729740 A GB 8729740A GB 8729740 D0 GB8729740 D0 GB 8729740D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- boring bits
- boring
- bits
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA869726 | 1986-12-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8729740D0 true GB8729740D0 (en) | 1988-02-03 |
GB2199520A GB2199520A (en) | 1988-07-13 |
Family
ID=25578681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08729740A Withdrawn GB2199520A (en) | 1986-12-29 | 1987-12-21 | Boring bit for coal or soft rock |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU8289087A (en) |
DE (1) | DE3743480A1 (en) |
GB (1) | GB2199520A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4110245A1 (en) * | 1991-03-28 | 1992-10-01 | Boart Hwf Gmbh Co Kg | Drill head with hard metal cutters - has main cutter provided with outwardly curved section extending over greater part of total length of main and adjoining cutters |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB599451A (en) * | 1946-07-24 | 1948-03-12 | Charles Frederick Hay | An improved boring bit for use in drilling coal, stone and the like |
GB351337A (en) * | 1929-09-18 | 1931-06-25 | Siemens Ag | Double winged boring bit |
GB364460A (en) * | 1930-05-15 | 1932-01-07 | Krupp Ag | Improvements in rotary drill bits |
GB518747A (en) * | 1938-08-31 | 1940-03-06 | Charles Crofton And Company En | Improvements relating to rock boring bits |
GB685967A (en) * | 1950-12-02 | 1953-01-14 | Jessop William & Sons Ltd | Improvements in or relating to rotary bits for coal and like drilling |
GB788104A (en) * | 1954-10-01 | 1957-12-23 | Modern Hardmetals Ltd | Improvements in or relating to rock drilling bits |
GB822029A (en) * | 1956-03-15 | 1959-10-21 | Coal Industry Patents Ltd | Improvements in or relating to scroll-type drilling tools |
-
1987
- 1987-12-21 GB GB08729740A patent/GB2199520A/en not_active Withdrawn
- 1987-12-21 AU AU82890/87A patent/AU8289087A/en not_active Abandoned
- 1987-12-22 DE DE19873743480 patent/DE3743480A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE3743480A1 (en) | 1988-07-07 |
GB2199520A (en) | 1988-07-13 |
AU8289087A (en) | 1988-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |