Contracting Wires Harness Sun’s Rays (Nov, 1932)
Contracting Wires Harness Sun’s Rays
THE long, exhausting search of scientists for a method of harnessing the rays of the sun has yielded the solar machine illustrated in the artist’s drawing above.
Operation of the machine is based upon the principle of contraction and expansion of tungsten wires. These wires are arranged lengthwise of a revolving drum, and the sun’s rays are directed against them by means of a parabolic mirror on each side.
As the drum rotates the wires pass out of the focal range of the sun’s rays and are doused in a trough of water at the bottom. Sudden cooling of the wires causes them to contract rapidly, pulling on a bell crank at the end of the drum. This action in turn causes the dogs to engage notches in the fixed ratchet and drive the drum around. Rotation of the drum causes the shaft to which it is fixed to revolve and operate the pulley on the same shaft. J. J. Warner, of San Francisco, is the inventor.