UNT Libraries Government Documents Department - 10 Matching Results

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Chimney
Patent for a chimney. Illustration included.
Door Check
Patent for door check. Illustration included.
Door Stop
Patent for a door stop. Illustration included.
Electrolytic Cell
Patent for an electrolytic cell. "This invention relates to electrolytic cells especially adapted and intended for the electrolyzing of the sulfates of the alkalies to obtain sulfuric acid and alkaline hydrates" (lines 10-13). Illustration included.
File
Patent for a file. Illustration included.
Folding Cot Or Bed
Patent for a folding cot or bed. Illustration included.
Indicator
Patent for an indicator. This invention is designed for use with phonographs, musicboxes, and like intruments. Illustration included.
Reciprocating Electric Engine
Patent for a reciprocating electric engine. Illustration included.
Reciprocating Electric Engine
Patent for "means for employing an ordinary continues current from a suitable source to produce an oscillating primary magnetic field of a solenoid-magazine and to use said magnetic field for setting a piston-like armature in a reciprocal axial motion to develop mechanical power in both directions" (lines 11-17).
Weighing-Scale
Patent for an improved weighing scale that is made in a way that prevents error in weighing objects.
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