Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Equalizing Device for Pump-Rods.
Patent for an improved equalizing device for pump-rods used in hand or windmill pumps that increases the operating efficiency and decreases the manufacture cost of the device.
Date:
April 10, 1906
Creator:
Shipman, John Davis
System:
The Portal to Texas History
Seed Planter
Patent for a seed planter. Illustration included.
Date:
January 10, 1911
Creator:
Dowdy, Ewell Monroe
System:
The Portal to Texas History
Spring Axle
Patent for an axle to provide assistance to the wheel to adapt to the irregularities of the surface.
Date:
June 10, 1913
Creator:
Coggin, Charley J.
System:
The Portal to Texas History