UNT Libraries Government Documents Department - 4 Matching Results

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Hog-Trough.: Patent for an improved and durable pig trough, one that stays clean and can be filled and eaten out of easily without wasting feed.
Improvement in Fire-Place Fenders.: Patent for "an extensible fender adapted for large or small fire-places" (lines 8-10) including instructions and illustrations.
Improvement in Permutation Locks.: Patent for improvements to permutation locks by various means.
Thill-Coupling.: Patent for a new and useful thill coupling for "locking the thill-iron to the attached thill in a raised position" (line 8 -9).