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Improvement to Lifting-Jacks

Description: Patent for the improvement of the lifting jack which allows the user to "lower the lifting bar by a step-by-step movement as well as to elevate the lifting bar by such a movement (lines 12-14). Includes instructions and illustration."
Date: January 12, 1915
Creator: Parker, Charles W. & Wittliff, Theodore H.
Partner: UNT Libraries Government Documents Department

Locomotive.

Description: Patent for an improved locomotive or traction-engine, with a series of water-shells, each containing "a series of fire-flues, a feeding-water heater, a pipe discharging steam" (lines 118-121), and a double-action plunger-pump.
Date: January 26, 1897
Creator: McCallum, Daniel W.
Partner: UNT Libraries Government Documents Department

Stationary Boiler.

Description: Patent for a new and useful improvements in stationary boilers for " marine, locomotive, and stationary purposes" (line 14- 15).
Date: January 4, 1898
Creator: McCallum, Daniel W.
Partner: UNT Libraries Government Documents Department

Music-Indicator.

Description: Patent for a music indicator, which shows sheet music notations and the name of the note and major and minor chords on a device, which is placed over the keyboard of a piano to show where the different notes are for use in teaching music.
Date: January 21, 1908
Creator: Thrash, William E.
Partner: UNT Libraries Government Documents Department

Fan Spring-Motor

Description: Patent for a portable fan spring motor.
Date: January 28, 1913
Creator: Von Hohenstein, Charles H.
Partner: UNT Libraries Government Documents Department

Adding-Machine

Description: Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Date: January 5, 1915
Creator: Gatewood, William F.
Partner: UNT Libraries Government Documents Department
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