'Scarab' Patent oil burner

"Scarab" Patent 131955 Oil Burner, No.3B8

This burner, known as the Scarab," is for crude oil and is of the film type. It was patented in 1919 by Mr. R. E. Ellis and Mr. R. F. Macdonald. The warmed oil, under the control of the upper of the two valves shown, falls on to an open-ended tray so designed that the oil spreads over its surface in a film or ribbon. Along the open edge are a number of equally spaced fins, whose action is to give the film of oil a toothed form. Steam or compressed air is directed from a nozzle beneath these fins; it meets the oil flow at right angles, atomising it and giving a soft burning flame of large area. Different sizes of burner were made for stationary boilers, industrial purposes, steam wagins, and locomotives.