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Improvement in Force-Pumps.

Description: Patent relating to "that class of force-pumps which are to be submerged and are double-acting" (lines 17-19). Includes instructions and illustration.
Date: July 8, 1879
Creator: Finney, James J.
Partner: UNT Libraries Government Documents Department

Mechanical Movement.

Description: Patent for improvements in mechanical movements by using cranks and wrist pins to “converting rotary motion, like that of a wheel or pulley, into reciprocating motion.” (Lines 12-14) Illustration is included.
Date: April 8, 1902
Creator: McKean, Frank
Partner: UNT Libraries Government Documents Department

Marking Attachment for Planters.

Description: Patent for an attachment for agricultural machines, such as planters and cultivators, that marks off the distance between rows. The attachment consists of a marker that projects laterally from the ground to form a guide for the driver of the machine.
Date: April 8, 1913
Creator: Hallenbeck, Garrett L.
Partner: UNT Libraries Government Documents Department
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