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Packing-Ring for Piston-Rods.

Description: Patent for improved piston rings used in steam or internal combustion engines that prevent steam or combustion force from leaking by having packing rings automatically expand.
Date: August 31, 1915
Creator: Bryant, Clarence Ross
Partner: UNT Libraries Government Documents Department

Silo.

Description: Patent for a new silo design made of hollow tiles "to provide dead-air spaces within the tile, for the purpose of preventing the rapid passing of heat or cold through the tile" (lines 13-16) including instructions and illustrations.
Date: August 11, 1914
Creator: Sellors, Edward M.
Partner: UNT Libraries Government Documents Department

Sleeping-Car Seat and Berth.

Description: Patent for a sleeping car berth, which has pneumatic elevators for raising and lowering the top bunk, and folds the bunks and sheets between the car seats during the day.
Date: August 6, 1907
Creator: Butz, John F.
Partner: UNT Libraries Government Documents Department
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