UNT Libraries Government Documents Department - 14 Matching Results

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Multiple Telegraph

Description: Patent for "a simple device of this character by means of which any one of a number of instruments or translating devices at a distance may be operated over a single line-wire and by means of a single flow of electric current through said wire" (lines 10-15).
Date: May 7, 1901
Creator: Foster Jr., Samuel T.

Lubricator.

Description: Patent for a lubricating device for use on railroad cars, which continuously supplies lubricant to the journal box of the train car.
Date: October 6, 1908
Creator: Maness, William C.

Chain Jack.

Description: Patent for new and useful improvements in chain-jacks. "This invention aims to provide a chain-jack for lifting the boxes of axles, so that the bearings or brasses therefor can be readily replaced, and is designed especially for use in cases of hot boxes on railway-cars" (line 11-15).
Date: February 18, 1902
Creator: Phillips, Henry S.