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Transmission Gear Shifting Device.
Patent for a new transmission gear shifting device will "provide means for shifting the transmission parts of an automobile or other motor driven vehicle, without employing the usual hand levers and appliances, and to do so by means of electrically controlled operating mechanisms in combination with certain component parts." (Lines 12-18) including illustrations.
Date:
January 5, 1915
Creator:
De Witt, G.
System:
The Portal to Texas History
Rotary Boring-Drill.
Patent for new and useful improvement for rotary boring-drills that are used for drilling wells.
Date:
January 5, 1915
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Rotary Boring-Drill
Patent for a simply constructed rotary drill suitable for drilling wells in soft formations such as shale.
Date:
January 5, 1915
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Single-Disk Drill
Patent for a single disk drill for drilling into soft materials ("gumbo, shale, hard clay, and soft rock") without clogging.
Date:
January 5, 1915
Creator:
Hughes, Howard R.
System:
The Portal to Texas History