UNT Libraries Government Documents Department - 3 Matching Results

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Rail-Joint.
Patent for the improvement of railroad constructions by means of using a fishplate that provides an effective connection between two rail bars and secures the accuracy in lining the bars up.
Saw-Filing Machine
Patent for a Saw-Filing Machine. "This invention relates to saw-filing machines; and the object of the invention is to provide a simple and effective device of this character which is adapted to sharpen with accuracy and rapidity the teeth of different kinds of saws." (lines 8-13) including illustrations.
Speculum
Patent for an improved version of the speculum, a gynecological instrument, including illustrations.
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