PERPETUAL MOTION.
A perpetual motion wheel never fails to attract attention in a show window. There is one form of perpetual wheel device which can be made very easily, as it consists of a simple mechanism such as is shown here.
The wheel is three feet in diameter, of light wood and crude construction, provided with eight arms disposed radially so as to be separated by angles of 45 degrees, as shown. The axle is supported in bearings of wood. Each arm is provided with a movable weight of five pounds, being movable on a pivot or hinge on the arms so as to transfer the weight from the axis to the periphery, whereby, as it appears to the eye, the wheel is continually overweighted on one side, and revolves slowly. Attached to the base, A, is an upright piece of wood, B, and a spring hooked wire, G, extends from the top of this to the point D. Here the hook part tips up the weights as they come around in turn, causing each to drop over on its arm, thus placing the weight further from the center, and making the wheel turn. The center of gravity of the wheel varies from a point on the left of the center to a point at an equal distance on the right, according to the location of the arms at the particular point in the rotation of the wheel. The wheel can be draped with light goods and made attractive. The notice “Perpetual Motion” should be attached on a card.