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Well-Drilling Tool.
Patent for a bit that can be attached to a rotary tool for drilling wells. It features a means for using water to dislodge any accumulated mud from the tool.
Date:
April 5, 1921
Creator:
Clore, Franklin H.
System:
The Portal to Texas History
Motor.
Patent for a new and improved motor. This design consists in the reciprocating "bar, the shaft mounted in the lower portion of the chair, the drum on said shaft, cord coiled around the drum and connected to the bar, the rest secured to the upper end of the bar, and the spring coiled around the said bar between the chair-seat and the rest" (lines 1-6).
Date:
April 30, 1889
Creator:
Lovejoy, De Soto
System:
The Portal to Texas History
Improvement in Wheels for Vehicles.
Patent for improvements to carriage wheels, relating to the socketing ring that braces the spokes between the hub and the rim. Includes instructions and illustrations.
Date:
April 13, 1875
Creator:
Nelson, George
System:
The Portal to Texas History