GB306887A - Improvements in or relating to apparatus for sharpening twist drills - Google Patents

Improvements in or relating to apparatus for sharpening twist drills

Info

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
Application number
GB31700/28A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAUL TOUZOT
Original Assignee
PAUL TOUZOT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PAUL TOUZOT filed Critical PAUL TOUZOT
Publication of GB306887A publication Critical patent/GB306887A/en
Expired legal-status Critical Current

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.
GB31700/28A 1928-02-27 1928-10-31 Improvements in or relating to apparatus for sharpening twist drills Expired GB306887A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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