Year: 1888

page_text: Date of Application, 31st Dec.. 1889
Specification Accepted, 5th Feb.. 1889
We WILLIAM HOOKER, Gas Engineer, and DAVID MURRAY, Capitalist, both of
Sydney in the Colony of New South Wales, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to improvements in what are known as incandescent gas
burners,
In carrying out our invention we prefer that the burner shall be turned downwards
and not upwards as is usually the case with ordinary gas burners. In order to prevent
the fusing of the end of the bracket or supply pipe to which the burner is to be
attached, wo insert into the extremity of the gas supply pipe or bracket a small
porcelain tubular connection, which near its lower end is furnished with an annular
groove, so that the burner itself may be secured to it by platinum wire or other
suitable medium. This porcelain connection may, where the burner is to be secured
to it, be made of any convenient section, viz., circular, square, oval, oblong, or any
suitable form it may be desirable to give the burner. The burner itself is composed
of a thin sheet or plate of fine platinum, which is irregularly perforated with a great
number of fine holes through which the fluid within the pipe may escape to the
external atmosphere when the burner is fixed in position. After the platinum has
been perforated, the thin sheet of platinum is shaped or moulded to the desired form,
having preferably the smooth surface within and the grater-like surface without, and
is then lapped and secured by brazing or any other method found most convenient.
When the form of the burner has been obtained, its open end is placed over the free
end of the porcelain connection, and secured in position by platinum wire or other
suitable medium. The perforations in the burner should not approach too closely to
the spot where the burner is secured to the porcelain connection; the overheating
of the burner and consequent injury to the porcelain connection and supply pipe will
be thus prevented. At the same time, the heat conveyed from the burner to the
supply pipe will be sufficient to materially warm the gas which is approaching the
burner, and a more perfect combustion of the gas be thus ensured.

page_text: In the accompanying drawing, Fig. 1 is a side elevation of a gas bracket, the how
of the curve being upwards instead of downwards as is usual with brackets intended to
be used with ordinary gas burners. This view shows the porcelain connection in
position, a preforated platinum cylindrical hurner attached to it, and projected down-
wards, so that the light may not be intercepted by the gas fittings. Fig. 2 is an
elevation of the porcelain connection with cylindrical platinum burner attached, the
whole being fixed in position. on the bracket. Fig. 3 is a section of the same.
Fig. 4 is an elevation of an oval or other flat shaped burner. Fig. 5 is a side view of
the same, and Fig. 6 is a separate view of the porcelain connection.
The gas bracket a a is at the burner end, terminated by a female screw, into
which the male screw on the porcelain connection & is inserted. The platinum
burner e is placed over the free end of the porcelain connection b, and secured to
the latter by a platinum wire d or other suitable medium.
When the gas is lighted, a lambent flame will commence to play round the
burner, disappearing however as the heat developes; after a short space of time, the
burner will become heated to incandescence, and a brilliantly white, but soft light will
be diffused throughout the chamber.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the saine is to be performed, we declare that what we
claim is :
1. In an incandescent gas burner, the porcelain connection in combination with
perforated platinum burners as and for the purpose herein set forth.
2. The perforated platinum burner, or any mere modification thereof, substantially
as described and illustrated in the drawing, and for the purpose herein set forth.
Dated this:31st day of December 1888.