IMPROVEMENTS IN GAS BURNERS AND IN APPARATUS CONNECTED THEREWITH.
Year: 1874

page_text: LETTERS PATENT to John Wallace, of 3, St. Nicholas Buildings,
Newcastle-on-Tyne, in the County of the same Town, Engineer,
for the Invention of "IMPROVEMENTS IN GAS BURNERS AND IN APPARATUS
CONNECTED THEREWITH.
"
Sealed the 26th February 1875, and dated the 28th September 1874.
Office of the Commissioners of Patents, with his Petition, on the
28th September 1874.
I, JOHN WALLACE, of 3, St. Nicholas Buildings, Newcastle-on-Tyne,
5 in the County of the same Town, Engineer, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN GAS BURNERS AND IN
I, JOHN WALLACE, of 3, St. Nicholas Buildings, Newcastle-on-Tyne,
5 in the County of the same Town, Engineer, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN GAS BURNERS AND IN

page_text: For gasing yarns and other purposes I employ a burner tube adapted
to produce a small flat flame. The construction is shewn by the
Figures 1 of the annexed Drawings. The tube is flattened at the upper
part, and so cut and shaped that the flame shall issue from the side of
the top in such a manner that no dust or other particles falling from
above may enter the opening from which the gas issues.
I employ a ventilator for carrying off the products of combustion from
the before-mentioned burner or any other burner on gasing frames. It
consists (see Figures 2 of the Drawings) of an inverted cup or vessel
suspended over the flame having an orifice in its upper part, which may
be adjusted to carry off the products of combustion by means of a
draught of air. The cup is attached to an air tube having a hole to cor-
respond, and the opening through may be varied at will according to the
amount of products of combustion.
In atmospheric or Bunsen burners, to effect a better admixture of the
gas with the air induced by it previous to combustion, I employ the
arrangement shewn at Figure 3. It consists of one or more diaphragms
of sheet metal, wire gauze, or other material placed inside the burner
tube, dividing its area into two or more compartments, the friction of
the sides of which has the effect of more intimately mixing the gas and
air passing between them. Cross bars or twisted or bent wire may be
arranged in the burner with the same object.
No.
'
,
For compound or multiple burners of the class specified in my Patents
29th February 1872, and No. July 2nd, 1872, in which
wire gauze is used to prevent striking back, I make the burner tube of
increased diameter at the bottom, as shewn at Figure 4, so that the wire
gauze may be placed close against the bottom of the tube without
reducing the necessary area for the passage of the gas.
'SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Wallace in the Great Seal Patent Office 3
on the 27th March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
WALLACE, of 3, St. Nicholas Buildings, Newcastle-on-Tyne, in the
County of the same Town, Engineer, send greeting.

page_text: Another part of my Invention relates to a ventilator for carrying off
the products of combustion from the before-mentioned burner or other
burner used on gassing frames. The ventilator is shown in section at
Figure 3. It consists of an inverted cup or vessel a suspended over the
flame, and having an orifice a¹ in its upper part. The cup or vessel a is
connected by a screw 6 with a tube c, having a hole in it at c¹ to cor-
respond with the hole a¹. The tube c communicates with a fan or
exhauster. The amount of ventilation can be regulated by turning the
cup or vessel a so as to open or close the holes to the extent which is
found to give the best results. The burner and ventilator are shown in
their proper relative positions in Figures 1 and 3.
Another part of my Invention relates to atmospheric or Bunsen
burners, and has for its object to produce a better admixture of the gas
and air previous to combustion. For this purpose I arrange diaphragms
of sheet metal, wire gauze, or other material within the burner tube,
dividing its interior into two or more channels, as is shown by the
transverse section, Figure 4. The friction of these diaphragms on the
ascending current ensures a more intimate admixture of the gas and air
than otherwise would be obtained.
A similar effect may be obtained by packing the burner tube with
bent wire or introducing other obstructions into it, as is illustrated by
Figure 5.
With the same object I apply to the mouth of the burner tube a
cylinder of perforated sheet metal or wire gauze, the former by preference
closed at the upper end with the same material or completely closed by
an unperforated disc, as may be found most suitable. The cylinder may
be applied internally, as is shown in Figure 6, or it may be applied
externally or both.
Another part of my Invention relates to compound or multiple burners
of the class referred to in the Specifications of my Patents dated respec-
tively the 29th February 1872, No. 634, and the 2nd July 1872, No. 1999.
In these burners wire gauze is placed beneath the burner tubes where
several burner tubes open into the common mixing chamber to prevent
the flame striking back. If the burner tubes were of the same size
throughout the wire gauze would if placed in contact with the base of
the tubes tend to check the flow of gas and air. I make the burner
tube of increased diameter at the bottom, as is shown in section at

page_text: Third. The means for obtaining a better admixture of gas and air
in the tubes of Bunsen burners, substantially as shown at Figures 4, 5,
and 6.
Fourth. The multiple burner tube, substantially as shown at
Figure 7.
In witness whereof, I, the said John Wallace, have hereunto
set my hand and seal, this Twenty-seventh day of March, in
the year of our Lord One thousand eight hundred and seventy-
five.
JOHN WALLACE. (L.S.)