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Watch-Charm.

Description: Patent for watch charms or badges with "interchangeable emblems" (lines 11-12) to facilitate on-demand charm or badge creation through a separate stock of emblem carriers and the "interchangeable emblems."
Date: October 31, 1911
Creator: Friedman, Bernhard Z.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

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
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Building Tile.

Description: Patent for "hollow blocks" or "tile and hollow corner blocks" that "prevent moisture from passing through walls" (lines 10-14).
Date: December 31, 1918
Creator: Bennett, Walter R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automobile-Clutch.

Description: Patent for improvements to automobile clutches with the objectives of avoiding a jerky start, preserving integrity of friction surfaces, associating with anti-friction bearings to minimize load on motor, and producing an economical clutch.
Date: March 31, 1914
Creator: Bryant, Clarence R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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