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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.
Date: August 14, 1855
Creator: Brown, A. & Coffin, Abel, Jr.
Description: Patent for "extracting the nutritious part of flesh or animal meat of every description and combining this concentrated extract with flour or vegetable meal, and baking the two substances in an oven, thereby forming a portable desiccated soup-bread....." (lines 8-14), instruction only, no illustration.
Date: February 5, 1850
Creator: Borden, Gail, Jr.
Description: Patent for the improvement of the rotary engine through the arrangement of passages and system of pistons for a more simple construction with little friction, including illustration.
Date: August 16, 1859
Creator: Montjoy, George J. & Sawyer, J. B.