Contrast is very light, images are dull Claiming an ultimate speed of 5 miles a minute for his device, dr. J. A. Purves, of Taunton, reveals his unique conveyance. A hugh, 10-foot wheel driven by a 21/2-horsepower motor, held to the ground by gravity, easily attains 30 miles an hour, as the spherical contrivance whirls around the rigid engine. Leaders of the transportation industry are impressed by the singular demonstration of the astonishing contrivance.