Pat_2645761 - Gyrating Warning Lights
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.
