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Automatic Damper
Patent for "an attachment for stove-dampers whereby said dampers will be automatically moved, in order that the fire may be maintained at a predetermined heat" (lines 9-13).
Date:
January 31, 1888
Creator:
Beauchamp, William A. J.
System:
The Portal to Texas History
Oil Can.
Patent for a new and improved oil can. This design utilizes a handle with a hollow tube leading into the oil chamber, so when the removable cap is unscrewed from the handle, air flows into the chamber, which allows the oil to flow. This eliminates the need for a spring-bottom as with other oil cans, for the flow of oil can be stopped by sealing the tube.
Date:
January 31, 1882
Creator:
Wilson, Charles Bennett
System:
The Portal to Texas History
Shutter Regulator for Moving-Picture Machines
Patent for new and useful improvements in shutter regulators for moving picture machines. This invention relates to the cinematographic apparatus and more particularly to the shutter mechanism of moving picture machines which may be adjusted with ease and convenience and made secure in the located position
Date:
October 31, 1922
Creator:
Journeay, Fred Y.
System:
The Portal to Texas History