UNT Libraries Government Documents Department - 16 Matching Results

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Turbine Wheel.

Description: Patent for a new and improved turbine wheel. This design eliminates water friction and alleviates pressure on suspended buckets, causing them to last longer.
Date: August 17, 1880
Creator: Hallenbeck, Matthew L.
Item Type: Refine your search to only Patent

Screen.

Description: Patent for a new and improved insect screen. This design consists in "the combination, with the wire frame and the base to which the ends of the wires of said frame are connected, of the auxiliary strands bracing the arch-wire of said frame, and the book-holder having the upper end of its supporting-wires bent and connected to the longitudinal wire of said frame" (lines 18-24).
Date: May 17, 1887
Creator: Rice, Robert G.
Item Type: Refine your search to only Patent

Railroad-Crossing Signal

Description: Patent for signaling devices designed for use along railroads and grade crossings and meant to be automatically operated upon the approach of a train by giving a visible or audible signal at the crossing which will warn travelers of the approach of the train and calcuated to avoid the occurrence of accidents. The signal device includes a track associated train operated circuit closing device for energizing a bell, flashing light, or signal arm or any other equivalence or suitable signal device … more
Date: October 17, 1922
Creator: Hamilton, Morgan Smith & Brady, Charles Pettus
Item Type: Refine your search to only Patent
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