UNT Libraries Government Documents Department - 4 Matching Results

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Expansive and Contractive Well-Drill: Patent for improvements for expansive and contractive well drill involving improvements to drill bits.
Garment-Protector.: Patent for an easily detachable garment protector "for use with trousers and overalls to protect them from wear and from becoming soiled while in use" (lines 10-13) including illustration.
Line-Shaft Oiler: Patent for improvements to line-shaft oilers to more easily oil bearings and prevent oil waste.
Single Trigger Mechanism For Double-Barrel Guns: Patent for "new and useful improvement in Single Trigger Mechanism For Double-Barrel Guns (lines 5-7)."