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Needle for Graphophones and the Like.

Description: Patent for a gramophone needle that produces better sound due to allowing for vibrations and can be used longer by producing a a sharpened point on one side while playing that can be used the next time by turning over the needle.
Date: April 9, 1907
Creator: Petmecky, Fred
Partner: UNT Libraries Government Documents Department

Mold for Typographical Casting-Machines.

Description: Patent for a mold for typographical casting machines which may be altered to produce slugs of different sizes.
Date: April 7, 1914
Creator: Diaz, Pascual M.
Partner: UNT Libraries Government Documents Department

Road Service and Preservative

Description: Patent for improved surface, repairs, and preservation of roads.
Date: April 8, 1913
Creator: Wardell, Henry R.
Partner: UNT Libraries Government Documents Department
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