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Compound Air-Compressor.
Patent for an improved Compound Air-Compressor by having four cylinders, in pairings of a high pressure and a low pressure cylinders. The air from the low pressure cylinder will be fed to the high pressure cylinder. The pistons will work in succession rather than simultaneously.
Date:
February 17, 1920
Creator:
Jones, Oceola
System:
The Portal to Texas History
Drapery Support and Form
Patent for a new kind of drapery system that keeps the drapes pleated neatly and allows drapes to open and close easily with metal fasteners.
Date:
February 17, 1914
Creator:
Jantzen, Marius
System:
The Portal to Texas History