Post Hole Drill (open access)

Post Hole Drill

Patent for Post Hole Drill.
Date: February 17, 1917
Creator: Blue, Lee A.
System: The Portal to Texas History
Leg Brace (open access)

Leg Brace

Patent for a leg brace. Illustration included.
Date: October 17, 1905
Creator: Norwood, Robert R. & O'Neall, Elisha V.
System: The Portal to Texas History
Plow. (open access)

Plow.

Patent for a new and improved plow. This design "relates to that type of plows in which a double share is employed, one of which turns the sod or furrow in one direction and the other in the opposite direction, said plow being capable of being brought alternately into action, each to turn a furrow in the same direction in right or left turn plowing. . . . whereby the duplex plows may be alternately raised and lowered, and held in either the non-acting or operative positions. . . . and simple means for locking the plows in position for operation and for operating the locking devices" (lines 8-24).
Date: September 17, 1889
Creator: Leas, James W.
System: The Portal to Texas History