GB306887A - Improvements in or relating to apparatus for sharpening twist drills - Google Patents
Improvements in or relating to apparatus for sharpening twist drillsInfo
- Publication number
- GB306887A GB306887A GB31700/28A GB3170028A GB306887A GB 306887 A GB306887 A GB 306887A GB 31700/28 A GB31700/28 A GB 31700/28A GB 3170028 A GB3170028 A GB 3170028A GB 306887 A GB306887 A GB 306887A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drill
- wheel
- axis
- twist drills
- holder
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
306,887. Touzot, P. Feb. 27, 1928, [Convention date]. Twist drills, sharpening. -Apparatus for sharpening twist drills consists of a grinding wheel 2, operating with its flat face or with its peripheral edge upon a drill 6 which is carried by a holder 5 rotatably mounted with the axis of the drill inclined to the grinding surface. The holder also is rotatable about an axis 4 lying in the working face of the wheel 2 and passing through the point of the drill, rotation of the drill or its axis causing the rotation about the axis 4 by means of toothed sectors 7, 8; the drill may be rotated by a motor. The wheel 2 or the holder may be moved parallel to the grinding-plane to compensate for wear of the wheel.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR306887X | 1928-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB306887A true GB306887A (en) | 1929-07-11 |
Family
ID=8888973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31700/28A Expired GB306887A (en) | 1928-02-27 | 1928-10-31 | Improvements in or relating to apparatus for sharpening twist drills |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB306887A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2682736A (en) * | 1949-05-04 | 1954-07-06 | Johannes Cawi | Drill sharpening machine |
FR2433996A1 (en) * | 1978-08-22 | 1980-03-21 | Kawaragi Mfg Co | Jig ground twist drill - has plane cutting edges with lateral edges in centre and point symmetrical open areas on tip (NL 26.2.80) |
GB2186512A (en) * | 1986-02-19 | 1987-08-19 | Gardner Alfred B | Drill sharpening apparatus |
US5241791A (en) * | 1992-03-04 | 1993-09-07 | Alfred Brian Gardner | Edge tool sharpening apparatus |
-
1928
- 1928-10-31 GB GB31700/28A patent/GB306887A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2682736A (en) * | 1949-05-04 | 1954-07-06 | Johannes Cawi | Drill sharpening machine |
FR2433996A1 (en) * | 1978-08-22 | 1980-03-21 | Kawaragi Mfg Co | Jig ground twist drill - has plane cutting edges with lateral edges in centre and point symmetrical open areas on tip (NL 26.2.80) |
GB2186512A (en) * | 1986-02-19 | 1987-08-19 | Gardner Alfred B | Drill sharpening apparatus |
GB2186512B (en) * | 1986-02-19 | 1989-11-08 | Gardner Alfred B | Sharpening apparatus |
US5241791A (en) * | 1992-03-04 | 1993-09-07 | Alfred Brian Gardner | Edge tool sharpening apparatus |
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