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US Pat. 2645761

ILLUMINATION APPARATUS FOR WARNING AND SIGNALING PURPOSES

by Thomas E. McDowell and Arthur C. Heehler [assigned to The Pyle-National Company]
Filed: April 14, 1951; Serial No. 221,046
Patented: July 14, 1953
revision of US Pat. 2642522

"18350 GYRALITE"

This light unit consists of: a sealed beam lamp 39, light bulb 35, reflector apparatus 25, motor 24, a lens 33 made of glass or plastic of any desired color (preferably red for use as a warning light).

The sealed beam lamp 39 produces a stationary beam whereas the regular bulb lamp 35 produces the gyrating beam.

When the shaft of the motor 24a is rotated, the reflector apparatus 25 will move in a conically eccentric path with respect to the normal longitudinal fixture axis. This produces a gyrating beam of light.

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18350 Gyralite:	spec. sheets