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Chain-Steamer.

Description: Patent for a chain steamer that has an improved means of propulsion with a uniform speed despite a changing current. It does not allow the boat to laterally deflect. It is especially meant to be used with tow boats that travel on fast-moving, shallow streams. It can be used to move ferry boats across fast-moving rivers as well.
Date: February 7, 1893
Creator: Pfeifer, Edmund I. & Pfeifer, Eduard A.
Partner: UNT Libraries Government Documents Department

Water-Power.

Description: Patent for a water-power. It consists of a dam built halfway across a stream, a power-house with its upper end closed and inclined towards the upstream, gated inlet openings on the side of the power-house, gates that control the inlet openings, and a water-wheel on the stream side of the power-house.
Date: December 4, 1894
Creator: Vernon, William E.
Partner: UNT Libraries Government Documents Department

Means For Protecting River Banks

Description: Patent for a means for protecting river banks. The invention is designed to prevent erosion of banks and maintain the water flows course. Illustration included.
Date: April 16, 1907
Creator: Nabers, John A.
Partner: UNT Libraries Government Documents Department

Flexible Joint.

Description: Patent for a flexible joint for rigid pipes that allows the pipes to be taken around a bend or moved around easily in the operation of a sand pump or hydraulic dredging machine.
Date: July 7, 1908
Creator: Brown, Martin William
Partner: UNT Libraries Government Documents Department

Means for Laying Dredging-Pipes.

Description: Patent for a method of laying dredging pipes, which allows ships to pass through without removing them, allows air to release from the pipes to prevent movement of the pipes during pumping, a method of removing the contents before taking them out of the water, and an easy method removing the pipes completely.
Date: July 21, 1908
Creator: Smith, Phillip S.
Partner: UNT Libraries Government Documents Department

Dredge-Pump

Description: Patent for new and useful improvements to Dredge-Pumps. The pump is used to draw up sand and gravel from the bottom of a river.
Date: April 12, 1921
Creator: Stenberg, Anders Gustaf
Partner: UNT Libraries Government Documents Department
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