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US Patent: 1,258,998
Drill Sharpener
Jesse Ditson - Littleton, CO

USPTO Classifications:

Tool Categories:
metalworking machines : grinders : drill grinders

J. George Leyner Engineering Co. - Littleton, CO

Not known to have been produced

none listed

Patent Dates:
Applied: Feb. 16, 1917
Granted: Mar. 12, 1918

Patent Pictures:
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Joseph K. Schofield - patent attorney

This invention relates to drill sharpeners, and especially to that type of drill sharpener which is operated by fluid or pneumatic pressure. The objects of my invention are to improve the drill sharpener as at present used and especially to provide a jet or jets of the fluid, which is usually compressed air, to the working faces of the vise forming a part of the drill sharpener, in order that the work engaging faces and the work itself may be kept free from scale and dirt and the work engaging faces prevented from becoming overheated.

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