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 Adjustment means for a drill bit sharpening device

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Inventors: Slinsky, Albert;
Assignee:
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:

An improvement to a drill bit sharpening apparatus in the form of a simple spacer that provides the space setting between a drill bit point and the surface of a grinding device. The spacer comprises an elongated strip made of hard material; the width of the strip is not uniform and diminishes at two portions of the strip. The slanting angle of the portions corresponds to the Z-distances travelled by a drill bit supporting member so as to accomplish the setting. The strip also has calibration marks on its surface corresponding to a set of drill bit diameters for a given point angle. The spacer completely replaces the disc shaped and rectangular shaped prior art spacers.

DETAILED DESCRIPTION The invention accomplishes these and other objects by providing a spacer that comprises an elongate strip made of a hard material; the width of said strip diminishes from a maximum to a minimum at two separate portions of the strip so that one of its longitudinal edges has two slanted portions.
The strip has calibration marks to perform the setting.
The novel spacer replaces the aforesaid disc type and rectangular type of spacers.
The invention provides several significant features and advantages.
With prior art spacers, some parts of the drill bit sharpener have to be removed when setting the sharpener for drill bits of different diameters or when changing gauges.
An important feature is that by using the spacer according to this invention there is no need to make such removal of parts.
An advantage of the spacer according to the invention is that the construction is much simpler than the types of the prior art.
Another advantage is that a wider variety of materials can be utilized for its construction.
Further advantages are that fewer parts are needed for the space setting when using the spacer according to this invention; and that the setting is visible at all times during the drill bit sharpening operation.
The invention accordingly comprises the features of construction, combination of elements and arrangement of parts that will be exemplified in the construction hereinafter set forth, and the scope of the invention will be indicated in the claims.



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