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Rotary Force Pump.

Description: Patent for a new and improved rotary force-pump. This design "consists in a rotary force-pump constructed with a tubular standard provided with one or more flexible tubes having interior half-tubes and an interior cylinder mounted upon a crank-shaft and provided with adjustable bars carrying rollers whereby a liquid can be raised by the successive action of the said rollers upon the said flexible tubes" (lines 22-29).
Date: April 14, 1885
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automatic Telephone-Exchange System.

Description: Patent for "a simple system and arrangement which is especially adapted for a telephone exchange, which enables the instruments to be connected by a single wire, which dispenses with the use of an operator at the central station, which has automatic means for registering the messages sent by each subscriber, and which is provided with an automatic switching device by means of which one subscriber may connect with any other" (lines 10-19).
Date: December 5, 1893
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bookbinder's Gluing-Press.

Description: Patent for a bookbinder's gluing press, which can be used for books of varying thicknesses.
Date: October 11, 1910
Creator: Giesecke, Julius; Nebergall, Ben F. & Oheim, George F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Wind Engine.

Description: Patent for a new and improved wind engine. This design "relates to an improvement in wind-engines, in which a vertical circular frame having a wind-wheel is covered to the half by a hemispherical roof supported by posts" (lines 8-12).
Date: February 2, 1886
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Butter-Container.

Description: Patent for a butter container that holds butter and protects against direct handling until it is served. This is inexpensive, two-piece and very easy to clean.
Date: August 12, 1913
Creator: Eiband, Ernst A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Wheel-Operated Lift Mechanism

Description: Patent for a wheel operated lift mechanism designed for agricultural implements with wheels which can raise the frame of the agricultural implement for easy access to the wheel. This tool is adjustable to raise or lower the frame for easy access to the wheel to disconnect it.
Date: May 17, 1921
Creator: Altgelt, Herman E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Corn-Husker.

Description: Patent for a "simple, inexpensive, and convenient hand-operated machine employing an oscillating knife or cutter for severing the stalk or stem and at at the same time clamping the shucks, so that the ear, when turned, will effect the bursting open of the shucks, thus permitting the ready removal of the ear" (lines 8-15).
Date: December 22, 1896
Creator: Willmann, Joseph
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Collar-Fastener.

Description: Patent for providing a durable structure for fasteners to be used on horse collars for effectiveness and quick manipulation. Illustrations are provided.
Date: July 20, 1915
Creator: Wallace, William F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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