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Frictional Clutch.
Patent for a frictional clutch, which can be attached to different size pulleys.
Date:
October 26, 1909
Creator:
Haggard, William H.
System:
The Portal to Texas History
Cotton-Gin
Patent for a cotton gin which uses air blasts to clear cotton from the saws of the gin. Illustrations included.
Date:
January 26, 1909
Creator:
Lumpkin, Robert B.
System:
The Portal to Texas History