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  You limited your search to:

 County: Jefferson County, TX
 Decade: 1850-1859
 Collection: Texas Patents
Mode of Straining Saws by Atmospheric Pressure.

Mode of Straining Saws by Atmospheric Pressure.

Date: August 14, 1855
Creator: Brown, A. & Coffin, Abel, Jr.
Description: Patent for the improvement of the reciprocating saw by simplifying the arrangement of cylinders, pipes, and exhaust pumps to produce the necessary vacuum, including illustration.
Contributing Partner: UNT Libraries Government Documents Department
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