There is no gauze in this
burner, and the parts are readily detachable for cleaning when required.
Another burner, in which metal is abolished for the nipple, is made by
Geo. Bray and Co., Ltd., of Leeds, and is shown in Fig. 20. In this
burner the injecting nipple is of porcelain.
[Illustration: FIG. 20.--BRAY'S INCANDESCENT BURNER.]
ACETYLENE FOR HEATING AND COOKING.--Since the problem of constructing a
trustworthy atmospheric burner has been solved, acetylene is not only
available for use in incandescent lighting, but it can also be employed
for heating or cooking purposes, because all boiling, most warming, and
some roasting stoves are simply arrangements for utilising the heat of a
non-luminous flame in one particular way. With suitable alterations in
the dimensions of the burners, apparatus for consuming coal-gas may be
imitated and made fit to burn acetylene; and as a matter of fact several
firms are now constructing such appliances, which leave little or nothing
to be desired. It may perhaps be well to insist upon the elementary point
which is so frequently ignored in practice, viz., that no stove, except
perhaps a small portable boiling ring, ought ever to be used in an
occupied room unless it is connected with a chimney, free from down-
draughts, for the products of combustion to escape into the outer air;
and also that no chimney, however tall, can cause an up-draught in all
states of the weather unless there is free admission of fresh air into
the room at the base of the chimney.
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