Improvements in or Applicable to Atmospheric Gas Burners - and to other Articles Requiring Free Circulation of Gaseous Matter while Preventing the Passage of Flame.
Year: 1887

page_text: The decision of the Chief Examiner, acting on behalf of the Comptroller of the
17th day of January 1894, allowed, under Section 18 of the Patents, &c.,
Act, 1883, an Amendment of this Specification.
Improvements in or Applicable to Atmospheric Gas Burners
-
and to other Articles Requiring Free Circulation of Gaseous
Matter while Preventing the Passage of Flame.
We, CHARLES LLOYD BRAITHWAITE Junior and ISAAC BRAITHWAITE, both of
Kendal in the County of Westmoreland, Manufacturers, do hereby declare the
nature of this invention to be as follows:-
The principal object of this invention is an improvement in atmospheric gas
burners.
Instead of wire gauze or perforated metal plates to prevent the flames from
passing back into the mixing chamber, we use strips of thin metal placed side by
side and corrugated so as to leave narrow tubular spaces between thein. Compared
with the holes in wire gauze or in perforated metal, these, spaces are longer. in
proportion to their width, and as the metal strips are placed with their edges facing
the direction of the current of gas and air, this current is but little obstructed.
while at the same time the flame is perfectly prevented from passing into the mixing
chamber.
The manner of carrying this out is as follows. We take narrow strips of thin
sheet metal, preferably copper or brass. Some of these we corrugate in, a
direction at right angles to their length, by passing them between flufed rollers.
or in any other convenient way. We then place the strips together so that
there may be a plain strip and a corrugated strip alternately. If the top of the
burner to be. filled is circular, we may take one plain and one corrugated strip
& fold them round and round in a spiral form, until they have formed a flat
disc the size required. If the burner top is rectangular, or of other shape,
we may cut the strips the length of one dimension of the top, and lay them
on their edges alternately, a plain and a corrugated one, until the requisite.
size is attained.
This apparatus will be equally applicable for some forms of safety lamps and
other articles requiring a free circulation of gaseous matter, while preventing the
passage of flame.
Dated 1.11 1
T
100%
WM. P. THOMPSON & Co.,
Of 6, Lord Street. Liverpool,
Agents for the Applicants..

page_text: COMPLETE SPECIFICATION (AMENDED),
Improvements in or Applicable to Atmospheric Gas-burners
and to other Articles Requiring Free Circulation of Gaseous
Matter while Preventing the Passage of Flame.
We. CHARLES LLOYD BRAITHWAITE Junior and ISAAC BRAFTHWAITE, both
of Kendal, in the County of Westmoreland, Manufacturers, 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:-
The principal object of this invention is an improvement in atmospheric gas
burners.
Instead of wire gauze or perforated metal plates to prevent the flames from
passing back into the mixing chamber, we use strips of thin metal placed side by
side and corrugated so as to leave narrow tubular spaces between thein. Compared
with the holes in wire gauze or in perforated metal, these spaces are longer in
proportion to their width, and as the metal strips are placed with their edges
facing the direction of the current of gas and air, this current is but little
obstructed, while at the same time the flame is perfectly prevented from passing
into the mixing chamber.
The manner which we prefer for carrying this out is as follows:-
We take marrow strips of thin sheet metal. preferably copper or brass. Some
of these we corrugate in a direction at right angles to their length, by passing
them between fluied rollers, or in any other convenient way. We then place
the strips together so that there may be a plain strip and a corrugated strip
alternately. If the top of the burner to be filled is circular or oval, we may
take one plain and one corrugated strip of any desired width and fold them
round and round in a spiral form until they have formed a flat disc the size
required. Should the top of the burner to be fitted, be of annular or argand
form, the same mode of filling may be adopted by commencing to fold the strips
round the top of the inner tube of the space to be filled. This is shown in Figure 1
section of tube. and Figure 2. transverse section of tube having corrugated and
plain sheet metal filling.
If the burner top be rectangular, or of other shape, we may cut the strips the
length of one dimension of the top, and lay them on their edges alternately, a plain
and a corrugated one. until the requisite size is attained.
This is set forți
Figure 3. longitudinal section and Figure 4 transverse section.
This apparatus will be equally applicable for some forms of safety lamps and
other articles requiring a free circulation of gaseous matter, while preventing
the passage of flame.
In these cases the air passages or chimneys will be fitted
with the corrugated & plain metal discs or filling substantially as shown in the
drawings.
While in specification and drawings, we have only shown sheet metal corrugated
with rounded corrugations, as we consider this the best form of carrying our invention
into effect, we wish it to be understood that we do not confine our invention to this,
but that pointed corrugations can be used instead of rounded ones, and if desired-very
long narrow corrugations-or-loops-extending-from-side-to-side-of the containing inbe
or passage, instead of flat sheets-and-corrugated ones-alternately, but-these-forms-are
net-a-good-as-those-shown. If needed, strips of thin metal may be placed under
these tops to support them, the said strips being placed on their edges and
transversely to the length of the strips of which the tops are made.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is
The manufacture or arrangement of gas burners with a filling of strips of

page_text: corrugated sheet metal, or in combination with strips of plain and--corrugated sheet
metal placed parallel to the walls of the tube, and dividing the tube into a series
of small ducts separated from each other by sheet metal walls, substantially as
described.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Agents for the Applicants.

page_text: Date of Application, 9th June, 1887
Complete Left, 21st Jan., 1888
Complete Accepted, 16th Mar., 1888
Improvements in or Applicable to Atmospheric Gas Burners and
to other Articles Requiring Free Circulation of Gaseous Matter
while Preventing the Passage of Flame.
We, CHARLES LLOYD BRAITHWAITE Junior and ISAAC BRAITHWAITE both of
Kendal in the County of Westmoreland, Manufacturers, do hereby declare the nature
of this invention to be as follows:-
The principal object of this invention is an improvement in atmospheric gas
burners.
Instead of wire gauze or perforated metal plates to prevent the flames from passing
back into the mixing chamber, we use strips of thin metal placed side by side and
corrugated so as to leave narrow tubular spaces between thein. Compared with the
holes in wire gauze or in perforated metal, these spaces are longer in proportion
to their width, and as the metal strips are placed with their edges facing the
direction of the current of gas and air, this current is but little obstructed, while
at the same time the flame is perfectly prevented from passing into the mixing
chamber.
The manner of carrying this out is as follows. We take narrow strips of thin
sheet metal, preferably copper or brass. Some of these we corrugate in à direction
at right angles to their length, by passing them between fluted rollers, or in any other
convenient way.
We then place the strips together so that there may be a plain
strip and a corrugated strip alternately. If the top of the burner to be filled is
circular, we may take one plain and one corrugated strip & fold them round and
round in a spiral form, until they have formed a flat disc the size required. If
the burner top is rectangular, or of other shape, we may cut the strips the length of
one dimension of the top, and lay them on their edges alternately, a plain and
a corrugated one, until the requisite size is attained.
This apparatus will be equally applicable for some forms of safety lamps and other
articles requiring a free circulation of gaseous matter, while preventing the passage of
flame.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Agents for the Applicants.

page_text: Improvements in or Applicable to Atmospheric Gas-burners and
to other Articles Requiring Free.Circulation of Gaseous Matter
while Preventing the Passage of Flame...
We, CHARLES LLOYD BRAITHWAITE Junior and ISAAC BRAITHWAITE both of
Kendal in the County of Westmoreland, Manufacturers, 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:-
The principal object of this invention is an improvement in atmospheric gas
burners.
Instead of wire gauze or perforated metal plates to prevent the flames from passing
back into the mixing chamber, we use strips of thin metal placed side by side
and corrugated so as to leave narrow tubular spaces between them. Compared with
the holes in wire gauze or in perforated metal, these spaces are longer in proportion
to their width, and as the metal strips are placed with their edges facing the direction
of the current of gas and air, this current is but little obstructed, while at the same
time the flame is perfectly prevented from passing into the mixing chamber.
The manner which we prefer for carrying this out is as follows:-
We take narrow strips of thin sheet metal, preferably copper or brass. Some
of these we corrugate in a direction at right angles to their length, by passing them
between fluted rollers, or in any other convenient way. We then place the strips
together so that there may be a plain strip and a corrugated strip alternately. If the
top of the burner to be filled is circular or oval, we may take one plain and one
corrugated strip of any desired width and fold them round and round in a spiral form
until they have formed a flat disc the size required. Should the top of the burner to
be fitted, be of annular or argand form, the same mode of filling may be adopted
by commencing to fold the strips round the top of the inner tube of the space to be
filled. This is shown in Figure 1 section of tube, and Figure 2, transverse section of
tube having corrugated and plain sheet metal filling.
If the burner top be rectangular, or of other shape, we may cut the strips the
length of one dimension of the top, and lay them on their edges alternately, a plain
and a corrugated one, until the requisite size is attained. This is set forth in Figure 3,
longitudinal section and Figure 4 transverse section.
2
This apparatus will be equally applicable for some forms of safety lamps and other a
articles requiring a free circulation of gaseous matter, while preventing the passage
of flame. In these cases the air passages or chimneys will be fitted with the
corrugated & plain metal discs or fillings substantially as shown in the drawings.
While in specification and drawings, we have only, shown sheet metal corrugated
with rounded corrugations, as we consider this the best form of carrying our invention 3
into effect, we wish it to be understood that we do not confine our invention to this,
but that pointed corrugations can be used instead of rounded ones, and if desired very
long narrow corrugations or loops extending from side to side of the containing tube

page_text: or passage, instead of flat sheets and corrugated ones alternately, but these forms are
not as good as those shown. If needed, strips of thin metal may be placed under
these tops to support them, the said strips being placed on their edges and transversely
to the length of the strips of which the tops are made.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
The manufacture or arrangement of gas burners with a filling of corrugated sheet
metal, or plain and corrugated sheet metal, placed parallel to the walls of the tube,
and dividing the tube into a series of small ducts separated from each other by
sheet metal walls, substantially as described.