UNT Libraries Government Documents Department - 5 Matching Results

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Cotton Chopper
Patent for a new type of cotton chopper that has the ability to be adjusted in the vertical to make for faster cotton cutting. This is a simpler design making it cheaper to make and easier to repair.
Header.
Patent for "new and useful improvements in Headers," including illustrations.
Improvements in Rail-Lubricators
Patent for "a lubricating apparatus for use on street and other cars for lubricating the track when the car rounds a curve" (lines 8-11) including list of parts and illustrations.
Railroad-Crossing.
Patent for a railroad crossing that has tracks, which make less noise when it is crossed by a train than previous models.
Rotary Attachment
Patent for an attachment for rotary well drilling machinery meant to "provide means for automatically gripping a pipe when being raised to prevent such pipe from slipping back while the lifting tools are being lowered for such lifting" (lines 13-17)
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