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Combination Motion-Picture and Sound-Reproducing Mechanism.
Patent for a connecting mechanism between the motion picture and sound reproducing mechanisms. If the two get out of sync, there are manually operable means to halting one until the other has caught up.
Date:
June 4, 1918
Creator:
Kirkwood, Abraham L.
System:
The Portal to Texas History
Ever-Level Table.
Patent for tables designed for trains or ships where it is important for maintaining the table top constantly level. It allows for the top to be held constantly level and for maintaining its position without sudden movement or causing overbalancing.
Date:
July 4, 1911
Creator:
Etheridge, Thomas H., Jr.
System:
The Portal to Texas History
Headlight.
Patent for a headlight that turns with a cars body and will not accidentally turn from bumps.
Date:
July 4, 1911
Creator:
Bell, Robert A. & McKiel, James B.
System:
The Portal to Texas History