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Trolley-Harp.

Description: Patent for improvements to the efficiency of trolley harps by changing how the currents that power "overhead type electric car systems" (lines 13-14) are conducted.
Date: May 15, 1917
Creator: Carmack, James H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Swab Holder

Description: Patent for improvements in swab-holders consisting of a sectional box or cup containing fibrous material to apply a lubricating oil for the piston-rod to reduce friction and wear on the rod.
Date: July 10, 1906
Creator: Bruce. J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Combined Cigar-Tip Cutter and Match-Safe.

Description: Patent for a combined cigar tip cutter and match-safe that consists of a shaft, an operating lever, a match box under the lever, a link that attaches the match box to the lever, a coiled spring that is attached to the lever, a curved lever that is lined up to the other lever, a spring connecting the two levers, and a picker.
Date: April 4, 1893
Creator: Briggs, William J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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