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Packing Ring

Description: Patent for improved packing rings for pistons.
Date: October 16, 1915
Creator: Westmoreland, Ernest T.
Partner: UNT Libraries Government Documents Department

Automatic Air-Brake Applier.

Description: Patent for automatic air brake applier to release the air in the train pipe with a resultant application of the brakes upon a car wheel leaving the tracks, including illustration.
Date: December 16, 1913
Creator: Hall, Charles E.
Partner: UNT Libraries Government Documents Department
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