File:AmCyc Boring - Drill with prolonged cutting edge tapered to a point (2).jpg

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AmCyc_Boring_-_Drill_with_prolonged_cutting_edge_tapered_to_a_point_(2).jpg(196 × 329 pixels, file size: 20 KB, MIME type: image/jpeg)

Description
English: Woodcut/drawing of a drill bit with a prolonged cutting edge (ensuring a clean cut) tapered to a point (ensuring a straight hole).
Date published 1879
Source The American Cyclopædia, v. 3, 1879, p. 98 (Fig. 4).
Author Unknown authorUnknown author
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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:AmCyc_Boring_-_Drill_with_prolonged_cutting_edge_tapered_to_a_point_(2).jpg

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current21:41, 20 March 2014Thumbnail for version as of 21:41, 20 March 2014196 × 329 (20 KB)Library Guy{{Information |Description ={{en|1=Woodcut/drawing of a drill bit with a prolonged cutting edge (ensuring a clean cut) tapered to a point (ensuring a straight hole).}} |Source =''The American Cyclopædia'', v. 3, 1879, p. 98 (Fig. 4). |Autho...

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