GB190009930A - Improvements in Drill Grinding Machines. - Google Patents

Improvements in Drill Grinding Machines.

Info

Publication number
GB190009930A
GB190009930A GB190009930DA GB190009930A GB 190009930 A GB190009930 A GB 190009930A GB 190009930D A GB190009930D A GB 190009930DA GB 190009930 A GB190009930 A GB 190009930A
Authority
GB
United Kingdom
Prior art keywords
piece
holder
drill
rest
grinding
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
Inventor
James John Guest
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190009930A publication Critical patent/GB190009930A/en
Expired legal-status Critical Current

Links

Abstract

9930. Guest, J. J. May 30. Sharpening twist drills &c. The apparatus is shown in plan in Fig. 1. The drill is laid in a V-shaped holder c adapted to be swung about a pin c<3>, the axis of which intersects the line of the apex of the V at the face of the grinding-disc a, and is somewhat inclined to the plane bisecting the V. The pin c<3> is mounted in a piece c<2> adjustably secured on a stud h<2> which is clamped, parallel to the spindle of the grinding-disc, in the bracket a<7>. The holder is recessed at c<6>, to accommodate the shanks of the drills, and is fitted with an adjustable tail-rest g, g<3> provided with a feedscrew g<4>. A lip rest f, Figs. 3 and 4, is secured to the front end of the holder ; the drill is held against this by a pivoted piece e, having at one end a notched plate e<2> to engage the lip of the drill, and at the other bearing-piece e<4>, to rest on its body ; this piece e is mounted on a spring plunger d<2> fitted to slide in a socket in the holder.
GB190009930D 1900-05-30 1900-05-30 Improvements in Drill Grinding Machines. Expired GB190009930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190009930T 1900-05-30

Publications (1)

Publication Number Publication Date
GB190009930A true GB190009930A (en) 1901-02-09

Family

ID=32148610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190009930D Expired GB190009930A (en) 1900-05-30 1900-05-30 Improvements in Drill Grinding Machines.

Country Status (1)

Country Link
GB (1) GB190009930A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426478A (en) * 1942-09-01 1947-08-26 Jack Van H Whipple Drill grinder
US2511055A (en) * 1945-04-13 1950-06-13 Ganz Joseph Device to sharpen twist drills
US2848852A (en) * 1955-02-23 1958-08-26 Gordon T Rosholt Twist drill-bit sharpening unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426478A (en) * 1942-09-01 1947-08-26 Jack Van H Whipple Drill grinder
US2511055A (en) * 1945-04-13 1950-06-13 Ganz Joseph Device to sharpen twist drills
US2848852A (en) * 1955-02-23 1958-08-26 Gordon T Rosholt Twist drill-bit sharpening unit

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