Resource Type
States
Decade
Month
6 Matching Results
Results open in a new window/tab.
Results:
1 - 6 of
6
Adding-Machine
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.
System:
The Portal to Texas History
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
Music-Indicator.
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.
System:
The Portal to Texas History
Fan Spring-Motor
Patent for a portable fan spring motor.
Date:
January 28, 1913
Creator:
Von Hohenstein, Charles H.
System:
The Portal to Texas History