Machine for Sharpening Gin-Saws (open access)

Machine for Sharpening Gin-Saws

Patent for "a machine of this class which shall be simple, durable, an d easily manipulated, and by means of which the teeth of gin-saws may be sharpened in a rapid, convenient, and effectual manner" (lines 9-14).
Date: July 1, 1890
Creator: Smith, John Quince
System: The Portal to Texas History
Plow Attachment (open access)

Plow Attachment

Patent for a plow attachment. This invention works with sweep plows and consists of a runner and secured to the end of the plow beam. Illustration included.
Date: January 1, 1907
Creator: Wiegert, Theodore & Neumann, Louis
System: The Portal to Texas History