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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
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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