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Transmission Gear Shifting Device.

Description: 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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Boring-Drill

Description: 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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Single-Disk Drill

Description: 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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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