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Balanced Piston Engine.

Description: Patent for a new and improved balanced-piston engine. This design "relates to that class of steam or other engines which are constructed with two pistons receiving the pressure in opposite directions, each connected with cranks set at opposite positions, whereby the strain occurs simultaneously in opposite directions upon the crank-shaft and balances the same within its bearings, and thus obviates great friction on the journals and thereby economizes power" (lines 7-15).
Date: February 15, 1881
Creator: Peebles, William D.
Partner: UNT Libraries Government Documents Department

Spinning-Wheel

Description: Patent for "an improvement in domestic spinning wheels; and it consists in the combination of parts whereby the spindle or whirl is supported from above so as to hang down within the operator's reach, and is made to constantly revolve at the same time that the whirl is moved from and toward the operator" (lines 12-19) including instructions and illustrations.
Date: June 22, 1880
Creator: Church, Joshua G.
Partner: UNT Libraries Government Documents Department

Churn.

Description: Patent for a churn with a construction which will prevent "access of objectionable matter to the churn-body" (lines 14-15) including instructions and illustrations.
Date: April 3, 1900
Creator: Hargrove, Kincheon W.
Partner: UNT Libraries Government Documents Department

Stamp-Vending Machine

Description: Patent for improvements in stamp vending machines. "To improve the construction of coin-operated vending-machines and to provide a simple and comparatively inexpensive one designed for selling postage-stamps and capable of operation only by a coin of the proper denomination and adapted when properly operated to feed a stamp to the operator." (Lines 9-17) Illustration is included.
Date: December 10, 1901
Creator: Fender, John Brown
Partner: UNT Libraries Government Documents Department