Resource Type

Four Wheel Drive Mechanism (open access)

Four Wheel Drive Mechanism

Patent for giving engine power equally to all four wheels of a vehicle.
Date: February 25, 1919
Creator: Littlejohn, Lonzo B.
System: The Portal to Texas History
Plow (open access)

Plow

Patent for plow improvements, including a "novelly adjusted stock" and "adjustable colter knife," with illustration (lines 10-15).
Date: February 16, 1915
Creator: Hankins, Elias
System: The Portal to Texas History