Year: 1887

page_text: I, HERBERT JOHN HADDAN, of the firm of Herbert & Co., Patent Agents, of
18, Buckingham Street, Strand, London, in the County of Middlesex, Civil Engineer,
do hereby declare the nature of this invention a communication to me from abroad
by Walter Marsh Jackson, of New York, United States of America, Manufacturer,
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 gas burners, and particularly to a class of burners for
house use, in which controlling devices are located in the same to cause a uniform flow
of gas from the burner tip, and correct the fluctuations of pressure incidental to unequal
supply from the gas main.
The object of the invention is to construct a gas burner possessing the characteristics
of self regulation and economical consumption of gas, the burner being of simple
construction and consequent low cost of production.
With these objects in view the invention consists in certain features of construction
and combinations of parts that will be hereinafter described and pointed out in the
claims.
In the drawings Figure 1 represents a vertical section of the burner taken on an
axial line, the form being that of an ordinary house burner, the two sections that
compose the shell being represented as they appear before they are swedged
together.
Fig. 2 is a partial view of the joined edge of the burner body or shell, showing the
edges of the joined shells swedged together.
The tip a, is made of lava in a preferred form known as the E. H. Batswing, it is
located in the top of the burner shell and is adapted to fit the same with a gas-tight
joint.
The upper half shell B has a projecting flange c, formed on its lower edge, which
extends outwardly.
The lower shell H, is constructed with a similar flange d, which is made of such
proportionate size to the peripheral diameter of the flange c, on the upper shell, as to
receive it and permit it to be clamped tightly upon the outer edge of the diaphragm, E,

page_text: when the upwardly projecting flange d, is turned over and swedged down upon these
parts, and in this manner join the shells and fix the diaphragm in place by one opera-
tion. The base of the lower shell I, is contracted to form the depending portion i,
which is threaded to engage the interior threaded upper end of the pillar m.
The portion i, is furnished with a conical flange, that made to project upward
and is perforated at its top to form a gas passage from the pillar m, into the portion
of the burner located below the diaphragm E, the conical seat thus formed in the base of
lower shell E, is provided for the reception of a pendent valve P, which is made
conical at its upper end to correspond in taper to the shape of the seat it, formed on
the base i.
The suspended valve P, is held pendent and in secure engagement with the
diaphragm E, by a headed pin p, which is centrally secured to the valve P, to project
vertically, its head being made to rest upon the diaphragm the body passing through
a central perforation in the same. A cap plate o, has its centre cupped 10 rest upon
the head of the pin p, its disk laying upon the upper face of the diaphragm E, a
disk o', of similar size is placed opposite the cap plate o, and these plates are rigidly
secured in place by cutting slots s, in the lower plate o¹, to receive tongues, formed
integrally with the cap plate o, by punching them loose on three sides and bending
them at right angles to the surface of the plate, these tangs being clinched upon
the lower face of plate or disk o hold the two plates o, o', and the body of the pin,
(by its enclosed head) in secure adjustment with each other. It is important that
the valve P, that is secured to the diaphragm E, in the manner just stated, should be
held concentric with its opposed seat, and thus produce a true annular gas passage
from the pillar m, to the lower portion of the burner body.
The depending legs a, a, are made integral with the lower disk o¹, and are of
such a relative length to the extreme limit of proper depression of the valve. P,
with regard to its conical seat that their contact with the lower wall of the lower
shell H, will prevent an improper sagging of the weighted valve P, and the connected
diaphragm E.
It
In the diaphragm E, a proper sized perforation S, is made to permit gas to pass
into the upper chamber of the burner, and from thence to the tip to be consumed.
is essential that the relative proportion of these gas escapes be so graduated as to
produce a differential pressure of gas in the upper and lower chambers of the burner,
which by the vertical vibration of the diaphragm will cause a change of position of
the valve P, this will control the influx of gas to the burner boly below the diaphragm
establishing a constant pressure in the upper chamber and thus compensate for varying
pressures in the supply main.
As a further means of regulation I have found it expedient to perforate the base of
the depending portion i, with a hole, that is located between the threaded wall of the
portion, and the conical elevation formed on it. This side gas passage, in effect
forms a by-pass for the gas, to prevent the excessive rise of the valve P, under sudden
violent changes of pressure in the main supply pipe from producing a temporary "cut-
off of gas supply to the burner, by such an undue elevation of this valve. The
orifice, is so proportioned that the influx of gas effected by this small orifice to
the lower chamber of the burner, will be sufficient to restore the differential pressure
to the underside of the diaphragm E, that should exist relative to the back pressure
resulting from the restrained flow of gas that is expelled from the tip or slit orifice
while in the process of combustion as an illuminant."
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
:-
1st. In a gas burner the combination with a shell having an outwardly extended
flange adapted to fit within the rim of an opposed shell, of a flexible diaphragm
the edge of which is adapted to lay between the opposed flat flanges of the two
mated shells, and be secured between them by the returned edge of one flange
clamping upon the outer surface of the other flange, substantially as set forth.

page_text: 2nd. In a gas burner, the combination with a diaphragm to separate the interior
of a burner into two gas chambers, of two interlocking diaphragm plates one located
above, and one below the diaphragm, they being secured in place by slots in one
plate and tongues integrally struck from the other plate to enter the slots and be
clinched on the plate, substantially as set forth.
3rd. In a gas burner the combination with a flexible diaphragm adapted to
separate the interior of the burner into two gas chambers, of two interlocking
diaphragm reinforce plates, the upper plate being provided with a cupped recess in
its under side, adapted to receive the head of a valve stem, and the under plate
provided with a perforation for the passage of the valve stem, substantially as
set forth.
4th. In a gas burner, the combination with a flexible diaphragm adapted to
separate the interior of a burner into gas chambers, of a pair of interlocking
diaphragm plates, one located above and one below the diaphragm, of the plates
being provided with legs that are adapted to rest upon an interior shoulder or
floor of the burner shell, substantially as set forth.
5th. In a gas burner the combination with a flexible diaphragmn and a gas
regulating valve suspended therefrom, of a diaphragm plate provided with legs
adapted to engage a shoulder or floor within the burner shell, and thereby limit
the depression of the diaphragm and its connected valve, substantially as set
forth.
6th. In a gas burner, the combination with a pair of diaphragm reinforce plates
located one above, and one below the flexible diaphragm, of a gas regulating valve
suspended from the flexible diaphragm, the head of the valve stem being located
in à recess in the under side of the cap-plate, and resting upon the diaphragm,
substantially as set forth.
7th. In a gas burner having the gas to be burned on both sides of a diaphragm,
and a pendent weighted valve operated by gas pressure against said diaphragm by
means of which the gas is partially or wholly cut-off or put on, the combination
with the pendent valve of an independent by-pass, substantially as set forth.
8th. In a gas burner the combination with the jointed shells, a superimposed
secured diaphragm, and a valve pendent from the diaphragm to oppose a valve
seat in the base plate of the lower shell, of a conical valve, and a gas by-pass
made in the base wall of this lower shell to admit a limited amount of gas into the
lower chamber of the burner independent of the valve, substantially as set forth.
Dated this 20th day of December 1887.
H. J. HADDAN.
By Herbert & Co.,
Agents to Applicant.