UNT Libraries Government Documents Department - 5 Matching Results

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Casing Spear: Patent for casing spears. This invention is designed for pulling well tubes or casings that have broken off out of the well. Illustration included.
Coupling Means for Demountable Rum Sections.: Patent for coupling means for demountable-rim sections. Improved device that is simple, durable, efficient, and inexpensive to produce.
Electric Clock: Patent for an electric clock. Illustration included.
Machine for Holding Wall-Paper.: Patent for a wall-paper hanging machine. It has a frame with a handle, a paste-pot, pasting rollers, a paper-holding roll, a pivoted matching-frame, a cutter, and a way of putting the frame out of use.
Railroad-Crossing.: Patent for a railroad crossing that has tracks, which make less noise when it is crossed by a train than previous models.