14. Of the non-
atmospheric type the "Sansair," also made by Geo. Bray and Co., Ltd., is
extensively used. It is shown in Fig. 15. In order to avoid the warping,
through the heat of the flame, of the arms of burners which sometimes
occurs when they are made of metal, a number of burners are now made with
the arms wholly of steatite. One of the best-known of these, of the
injector type, is the "Kona," made by Falk, Stadelmann and Co., of
London. It is shown in Fig. 16, fitted with a screw device for adjusting
the flow of gas, so that when this adjuster has been set to give a flame
of the proper size, no further adjustment by means of the gas-tap is
necessary. This saves the trouble of manipulating the tap after the gas
is lighted. The same adjusting device may also be had fitted to the Phos
burner (Fig. 9) or to the "Orka" burner (Fig. 17), which is a steatite-
tip injector burner with metal arms made by Falk, Stadelmann and Co.,
Ltd. A burner with steatite arms, made by J. von Schwarz of Nuremberg,
and sold in this country by L. Wiener of London, is shown in Fig. 18.
[Illustration: FIG. 17.--"ORKA" BURNER.]
[Illustration: FIG. 18.--"SUPREMA" NO.
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