The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 1979
Filed:
Jul. 18, 1977
Robert Wolff, 5466 Engeln, DE;
Other;
Abstract
An auxiliary device for facilitating re-grinding and sharpening of spiral drills used by a home or do-it-yourself amateur in conjunction with a conventional grinding machine mounted on a table and having a rotating grinding wheel or disk exposed on a horizontal shaft. The device comprises a fork-shaped bracket including means for clamping to the table. Grooves are provided in the upper surfaces of the forks for bearings which rest in these grooves and are aligned thereby. The device includes a swiveling part which is loosely held into the grooves to accomodate the drill workpiece which is to be reground. Axle journal members in the bearings provide the swiveling movement of the workpiece. The swiveling part is provided with a groove between the axle journal members into which the workpiece is inserted and this groove has a clearance below the axis of the axle journals and is directed slantingly toward the grinding surface or path of the grinding disc thereby providing the desired re-grinding angle.