Subsequently a
tubular-headed burner known as the Sirius has been produced for the
consumption of acetylene at high pressure (20 inches and upwards).
The more recent burners which have been somewhat extensively used include
the "Schimek," made by W. Guentner of Vienna, which is shown in Fig. 19.
It consists of a tapering narrow injecting nozzle within a conical
chamber C which is open below, and is surmounted by the mixing tube over
which telescopes a tube which carries the enlarged burner head G, and the
chimney gallery D. There are two diaphragms of gauze in the burner head
to prevent firing back, and one in the nozzle portion of the burner. The
conical chamber has a perforated base-plate below which is a circular
plate B which rotates on a screw cut on the lower part of the nozzle
portion A of the burner. This plate serves as a damper to control the
amount of air admitted through the base of the conical chamber to the
mixing tube. There are six small notches in the lower edge of the conical
chamber to prevent the inflow of air being cut of entirely by the damper.
The mixing tube in both the 10-litre and the 15-litre burner is about
0.24 inch in internal diameter but the burner head is nearly 0.
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