This website has been archived from TrainWeb.org/gyra to TrainWeb.US/gyra.

US Pat. 2607839

ILUMINATION APPARATUS FOR WARNING AND SIGNALING PURPOSES AND METHOD OF CONTROL

by Arthur C. Heehler [assigned to The Pyle-National Company]
Filed: Feb. 2, 1949; Serial No. 74,086
Patented: Aug. 19, 1952

"20350 GYRALITE"

Light unit consists of: a fixed light source 22, a reflector 13a, a motor 15a.

Bowl shaped reflector 13a having angularly displaced axis of rotation relative to the optic axis of rotation.

A colored glass globe 14 is used for the red screen

A solid shaft 33 within a hollow shaft 26 enables the colored glass globe to be advanced forward towards the lamp through a circular hole in the reflector 13a upon a clockwise rotation (relative to the view from the locomotive cab) of the motor. The effect of this is to produce a colored(red) beam of light. A counterclockwise rotation retracts the screen producing the clear(white) beam.

---

20350 Gyralite:	photo	spec. sheets