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Flying-Machine
Patent for a flying machine with rotating feathered wings and propellers with an included emergency parachute like apparatus for landing the machine safely in case of malfunction.
Date:
September 24, 1912
Creator:
Hardgrave, Henry
System:
The Portal to Texas History
Plug for Lubricator-Cups.
Patent for a lubricator cup and plug system typically used with rods and crank pins. The improvements prevent plug loss and alter the cup to be “readily placed in position or removed therefrom and the plug can be adjusted as required” (lines15-18). Includes illustrations and detailed part description.
Date:
November 24, 1908
Creator:
McDonald, Al
System:
The Portal to Texas History