Improvements in or relating to Gas Blast Appliances for General Heating and Incandescent Lighting Purposes.
Year: 1898

page_text: Improvements in or relating to Gas Blast Appliances for General
Heating and Incandescent Lighting Purposes.
We, RICHARD THOMAS GLOVER and JOHN GEORGE GLOVER, of the Firm
Thomas Glover and Co. Ld., 214 to 222, St. John Street, Clerkenwell, London,
Gas Meter Manufacturers, do hereby declare the nature of this invention to be
as follows:-
This invention has for object, the construction and combination of two or more
Bunsen flame or blast nozzles so made and arranged that the flame of gas shall
be concentrated by impinging upon or against one another and produce intense
heat, each nozzle or its supply pipe having a spit jet capable of minute regulation
by a cone or other valve turnable by a thumb button from the outside to increase
or determine the strength of the blast, according to the purpose for which the
heat blast is intended.
The invention is specially applicable for brazing and other operations on metals,
for stove heating, and for incandescent lighting.
Dated this no.
J
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Richard Thomas Glover and John George Glover.
Improvements in or relating to Gas Blast Appliances for General
Heating and Incandescent Lighting Purposes.
We, RICHARD THOMAS GLOVER and JOHN GEORGE GLOVER, of the Firm
Thomas Glover and Co. Ld., 214 to 222, St. John Street, Clerkenwell, London,
Gas Meter Manufacturers, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention has for object, the construction and combination of two or more
Bunsen flame or blast nozzles so made and arranged that the flame of gas shall
be concentrated by impinging upon or against one another and produce intense

page_text: heat, each nozzle or its supply pipe having a spit jet capable of minute regulation
by a cone or other valve turnable by a thumb button from the outside to increase
or determine the strength of the blast, according to the purpose for which the
heat blast is intended.
The invention is specially applicable for brazing and other operations on metals
for stove heating, and for incandescent lighting.
Our invention is clearly explained by the annexed drawings in which Figure 1
represents an apparatus for brazing or heating purposes. Figure 2 the applica-
tion of the invention for incandescent gas lighting.
According to Figure 1, the invention consists of two nozzles A, B, arranged at
an angle to each other with the ends C, D, of the nozzles just touching each
other. These duplex nozzles A, B, are affixed to sockets E, F, of a branch G
common to both and receiving the supply of gas at H, the sockets having feet I, J,
for standing on a bench or other surface. Each socket has a screw pin K, L,
operable for adjustment from the outside by a button head M, N, and the
tubes A, B, are provided with sliding shutters P, Q, of ferrule like formation to
close the air inlets R, S, more or less and so that the supply of air can be regulated,
each nozzle A, B, being either screwed or otherwise fitted over the gas spit
nozzles T, U, as to be within proper range of the air inlets to prevent back lash
of the flame from any cause.
We have shown each nozzle A, B, which form the air and gas mixing chambers
with two air inlets but one to each may only be necessary. Each nozzle A, B,
has also a liner tube V, the lower ends of which by saw cuts permit of their being
swaged out to locate the liner V in contact with the lower tubular portions and to
leave a clearance for nearly the full length for air to pass up between them and
the nozzles A, B, for preventing the outer tubes becoming overheated. The
atmospheric flames of the two nozzles A, B, strike against each other at the out-
iets and intensifies the heat considerably by commingling above that of two
single flames not so impinging, the supply of gas to the two nozzles A, B, being
much less than that required for two separate and unconnected nozzles.
The flames striking into each other as just explained ensure a vertical flame,
and their contact and intermingling produces the roar so familiar to workmen
from the ordinary pump and compressed charge apparatus now so much in use,
our apparatus being quite as efficient without a force blast which our apparatus
effects at ordinary atmospheric conditions.
The same advantages and results are obtainable for incandescent lighting, for
which purposes we arrange a gallery, or chimney or globe holder W on the
nozzles A, B, as at Figure 2, and by a hooked post X, we suspend an incandescent
mantle centrally over the flame. Figure 2 represents the nozzles A, B, as pro-
jecting from an ordinary wall bracket or a short length of piping Z provided with
a tap a for regulating the gas supply to the duplex burner, but it will be readily
understood that by making the gas and air supply centrally of the branch G,
as described with reference to Figure 1, the double nozzled burner can be arranged
on a pedestal for table use, or on a column, such as. for street lighting, the requi-
site quantity of gas for our double nozzled burners, besides being more efficient,
effects a great saving of gas.
For incandescent gas lighting, the air inlets S will be proportionately arranged,
so that only the required quantity will pass to mix with the gas in the tubes A, B,
as will ensure a good flame and perfect combustion.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what
claim is :-
we
1. An apparatus consisting of two fixed angled tubes with outlets arranged for
the flame of each to impinge and commingle at the point of combustion, and
supplied with air and gas from a tube common to both, as and for the purposes
described and as represented at Figure 1 of the annexed drawings.

page_text: 2. An apparatus for incandescent gas lighting consisting of two fixed angled
tubes, so arranged that the flame from each impinge and commingle at the point
of combustion and supplied with gas and air from a branch common to both, as
set forth and as represented in the annexed drawing, Figure 2.
1
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Richard Thomas Glover and John George Glover.