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Blow-Off Cock

Description: Patent for new and useful Improvements in “blow-off cocks for use on locomotive and other boilers,” (line 9-11), including an illustration.
Date: November 23, 1915
Creator: Roach, John L. & Dawson, Lance L.

Door Opener

Description: Patent for "improved door opener for automobiles constructed particularly to enable the driver to control any of the doors and open any such selectively at pleasure without leaving his seat." (lines 8-12).
Date: June 8, 1915
Creator: Hyland, George O.

Mouse Guard for Pianos

Description: Patent for a pivoting flap device to block access of mice to the interior of the piano through the space beneath the pedals.
Date: August 10, 1915
Creator: Bell, Silas D.

Packing Ring

Description: Patent for improved packing rings for pistons.
Date: October 16, 1915
Creator: Westmoreland, Ernest T.
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