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Improvement to Lifting-Jacks
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.
System:
The Portal to Texas History
Locomotive.
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.
System:
The Portal to Texas History
Stationary Boiler.
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.
System:
The Portal to Texas History