Resource Type

Improvement in Hand-Vises. (open access)

Improvement in Hand-Vises.

Patent for hand vise to use as a tool for mechanics to hold small articles, can be attached to bits or augers for gauging the depth of a hole bored, and also for countersinking such holes for screws.
Date: November 19, 1872
Creator: Overton, Thomas
System: The Portal to Texas History
Improvement in Plows. (open access)

Improvement in Plows.

Patent for improving a plow device that is curved and has open grooves.
Date: September 11, 1875
Creator: Freeman, Irvin
System: The Portal to Texas History