Resource Type
Counties
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Cotton-Chopper
Patent for a cotton chopper and cultivator which has adjustable cutters.
Date:
June 18, 1912
Creator:
Cain, James N.
System:
The Portal to Texas History
Equalizer for Pump Rods
Patent for an equalizer for pump rods. This invention is designed to "assist in elevating the column of water in a pump, is designed to sustain the pump rod in its fixed position" (line 11-14). Illustration included.
Date:
June 13, 1911
Creator:
Johnson, Robert H.
System:
The Portal to Texas History
Spirit Level.
Patent for a spirit-level by Allan T. Gibson. Meant for helping users obtain level and perpendicular lines with more ease and accuracy, as well as for determining any intermediate angle.
Date:
June 26, 1906
Creator:
GIbson, Allen T.
System:
The Portal to Texas History