Improvements in Gas Fires.
Year: 1894

page_text: The decision of the Chief Examiner, acting on behalf of the Comptroller, of the
6th day of March 1895, allowed, under Section 18 of the Patents, &c. Act, 1883,
an Amendment of this Specification.
Date of Application, 19th Jan., 1894
Complete Specification Left, 14th June, 1894-Accepted, 14th July, 1894
I, ROBERT BAILLIE MAIN, of Argyle Works, Kinning Park, Glasgow,
Scotland, Gas Cooking and Heating Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object to provide a gas fire burner which will altogether
prevent firing back, as well as obviate the hissing noise which is so common and
disagreeable in gas fires presently in use.
In carrying my invention into practice I make the jets or nozzles of the burner
where combustion takes place of bell-shape and with a flange at the lower ends or at
any suitable distance from top and on these flanges rests a sheet of perforated metal or
gauze of any suitable material and either flat or shaped somewhat similar to a
thimble to enable it to be replaced when necessary. The cold current of gas and
air passing continuously through the perforated metal or gauze at a distance from
point of combustion, prevents it becoming overheated and so wasting away by
direct contact or radiation from the fire.
Dated this 18th day of January 1894.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
COMPLETE SPECIFICATION (AMENDED).
Improvements in Gas Fires.
I, ROBERT BAILLIE MAIN, of Argyle Works, Kinning Park, Glasgow,
Scotland, Gas Cooking and Heating Engineer, 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 :―
My invention has for its object a gas fire burner which will altogether prevent
firing back, as well as greatly reduce or lessen the hissing noise which is so common
and disagreeable in gas fires presently in use.
In carrying my invention into practice I make the jets or nozzles of the burner
at the outlet where combustion takes place of bell shape or widening towards
outlets, and with a flange or other support at the lower ends or at any suitable
distance from the top, and on these flanges or supports rests and pressing against the
sides of the nozzles or jets there is a sheet of perforated metal or gauze of any suitable
material, and having turned-up edges to facilitate placing and maintaining it in

page_text: position, as well as to enable it to be easily removed for cleaning or renewal it
necessary.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended an explanatory sheet of drawing, which I shall
now proceed to describe.
Figure 1 is a section of one form of gas fire burner; and Figure 2 is a plan of
the same.
A are the jets or nozzles of the burner, the outlets a¹ of which where combustion
takes place, as will be seen from the drawings, are wider than the inlets a². B is the
mixing pipe or chamber, and C is the pipe which conveys the mixed gas and air to
the jets or nozzles A. D are the flanges provided on the jets or nozzles A to
support the gauzes E, which are so shaped that when placed into the nozzles or
jets A the turned-up edges press against the sides of the nozzles or jets, forming a
tight joint to secure them firmly when pressed into position. The cold current of
gas and air passing continuously through the perforated-metal-or gauzes E at a
distance from point of ignition, prevents them becoming overheated and so wasting
away by direct contact with the flame. of the fire, and also prevents the flame
striking back and burning at injector.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In gas fire burners, having the nozzles or jets of bell-shape or widening
towards their outlets to facilitate the placing, fixing, or withdrawal of the gauzes or
other perforated metal, substantially as described and shown on the accompanying
sheet of drawings,
2. In gas fire burners, providing the nozzles or jets with flanges or other supports
at a suitable distance from the point of ignition to support the gauzes or other
perforated metal, substantially as described and shown on the accompanying cheet
of drawings.
3. In gas fire burners, having gauzes or other perforated metal with turned-up
edges so shaped that when placed in the nozzles or jets the turned-up-edges press
against-the-sides of the nozzles or jets forming a tight joint to secure them firmly
when pressed into position, and also to facilitate the removal of the ganzes for
eleaning, or renewal if necessary, substantially as described and shown on the
accompanying sheet of drawings,
4. In gas-fire-burners, the fixing or inserting of gauzes or other perforated
material in nozzles, removed from point of combustion, substantially as and for-the
purposes hereinbefore-described.
In gas fire burners in combination with nozzles or jets of bell-shape or widening towards
the outlet, the gauze with turned up edges so shaped that when placed in the bell-shaped
nozzles or jets the turned up edges press against the sides of the nozzles or jeta forming a
tight joint to secure them firmly when pressed into position, and also to facilitate the
removal of the gauze for cleaning or reneical if necessary, substantially as described and
shown on the accompanying sheet of drawings.
Dated this 13th day of June 1894.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.