Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1977-10-07
1979-12-04
Godici, Nicholas P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51219R, B24B 328
Patent
active
041764994
ABSTRACT:
The disclosure relates to a simple drill sharpener for sharpening cutting points of twist drills; the sharpener having a drill guide and holder adapted to hold a drill in certain axial alignment and having means for engaging the trailing edge of one flute of a drill in cooperation with an abutment means which supports the shank end of the drill such that when one facet of the drill point is ground on a grinding wheel, torque is imparted to the drill and forcing it in a rotary direction to maintain it in firm engagement with said flute edge engaging means and with said abutment means, thereby precisely maintaining longitudinal axial position of the drill, and fixing the drill against rotation relative to the holder. Further, the disclosure relates to a carrier for the drill guide and holder, together with mounting means which permits adjustment of the carrier and the drill guide and holder about a generally horizontal axis and generally vertical axis, and further provides for the sweeping action of the drill guide and holder relative to a grinding wheel about an axis parallel to the rotary axis of the grinding wheel which is provided with a grinding face disposed at right angles to the rotary axis of the grinding wheel. The guide and drill holder may be replaced by a table for supporting a tool to be sharpened by a grinding wheel.
REFERENCES:
patent: 614092 (1898-11-01), Eames
patent: 690398 (1902-01-01), Chandler
patent: 1576311 (1926-03-01), Desjardins
patent: 2142923 (1939-01-01), Stocking
patent: 2486335 (1949-10-01), Smith
patent: 2524279 (1950-10-01), Van Wyk
patent: 2580884 (1952-01-01), Bowman
patent: 2583159 (1952-01-01), Swanson
patent: 3374587 (1968-03-01), Simpkins
Flickinger Don J.
Godici Nicholas P.
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