Description: Patent for a new and improved street-car motor. This design consists in "the shaft geared to an axle of the car, the friction-wheels free to slide on the said shaft and having the annular collars, the rods . . . connected to the said annular collars, and the lever connected to the said rods to move the friction-wheels toward or from each other" (lines 16-22).
Date: May 10, 1887
Creator: Sparks, John Parks
Partner: UNT Libraries Government Documents Department