IMPROVEMENTS IN METRICAL CARBURETTERS
Year: 1881

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex, for
an Invention of "IMPROVEMENTS IN METRICAL CARBURETTERS." A commu-
nication from abroad by Walter Marsh Jackson, of Providence, United
States.
COMPLETE SPECIFICATION filed by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 23rd November 1881.
HERBERT JOHN HADDAN, of Kensington, Middlesex. "IMPROVEMENTS IN
METRICAL CARBURETTERS." A communication from abroad by Walter Marsh
Jackson, of Providence, United States.
This Invention relates to certain improvements in apparatus whereby the
volume of gas or air flowing to the burner controls the quantity of carburetting
fluid exposed to a passing current of gas or air, as more fully hereinafter
specified.
In the Drawings Figure 1 represents an elevation of my improved apparatus.
Figure 2 represents a top view of the same with the cover of the meter removed.
Figure 3 represents a vertical sectional view of the upper part of the meter,
and a side elevation of the hydro carbon distributing devices.
Figure 4 represents a sectional view of the valve and the shaft for operating the
same.
Figure 5 represents a view of the valve casing detached, showing the face of the
same.
Figure 6 represents a view of the valve detached.
Figure 7 represents a view of the valve and spring for holding it to its seat.
Figure 8 represents a detached sectional view of the upper part of the carbu-
reting chamber.
Figure 9 represents a vertical sectional view of a modification of my Invention.
Figure 10 represents a view of the face of the valve employed in such modi-
fication of the apparatus, and
Figure 11 represents a detached view of the valve casing looking down upon
the valve seat.

page_text: The letter A indicates a gas measuring or indicating device which may be of
any suitable description, an ordinary gas meter being represented in the present
instance.
The letter B indicates the rods by means of which motion is transmitted from
the flexible chambers or bellows of the meter to shaft C, which is provided with
the usual worm D actuating the indicating mechanism.
The shaft C at its upper end is provided with a mitre wheel E which inter
meshes with a mitre wheel F mounted on the inner end of a horizontal shaft G,
journalled in a horizontal tube G' supported at H to one of the walls of the meter
and extending through the same.
The said shaft at its outer end is provided with a recess I and a transverse pin K
for the purpose hereinafter described.
The letter L indicates a cylindrical valve casing provided with disconnected
pipes M, M², having suitable couplings N, O, by means of which they may be
secured respectively to tubes leading from a suitable reservoir and to the
carbureter.
The said valve casing is provided with a conical valve seat P having ports Q, R,
communicating respectively with the pipes M, M².
The letter S indicates a horizontal extension attached to the valve casing.
This is screw threaded externally and is adapted to be secured to the shoulder T
on the outer end of the tube G¹ by means of a coupler U.
The letter W indicates a valvo provided with a conical face Z¹ which sets against
the conical seat of the valve casing.
The said valve on its conical face is provided with a series of chambers A¹ for
the purpose hereinafter specified.
The said valve is provided with a shaft B¹ which extends backwards through
the extension S, and is slotted as indicated by the letter C', and is adapted to enter
the recess in the shaft G, and engage the pin K so as to be rotated by said shaft.
The letter D indicates a screw threaded gland in the extension S, by means of
which a packing E' may be compressed around the shaft B¹ to prevent the escape
of the hydro carbon fluid, as more fully hereinafter set forth.
The outer face of the valve is made slightly concave, and is provided with
recesses F in which fit the ends of the radial spring G².
The valve casing is provided with a removable cap H' which has an adjusting
screw I passing through its center, the inner end being pointed and bearing
against the center of the radial spring in such a manner that the pressure upon the
valve may be regulated as required.
The lower port R of the valve casing is formed obliquely, as indicated, and the
recesses in the valve are of given capacity, and so arranged with respect to the
two ports to supply a continuous flow of hydro carbon from the reservoir to the
carbureter as the valve is rotated,
The valve casing is provided with a small port H³ leading from the upper
pipe M¹ in such position as to communicato with the upper parts of the chambers
in the valve as they successively connect with the port and thus allow the
hydro carbon to escapo through the said port to the carbureter, being replaced in
the chambers by a suitable quantity of gas or air from the carbureter.
This gas or air as the chambers are successively brought into connection with
the port escapes through the same and bubbles up into the reservoir to create
the necessary displacement to fill the next succeeding chamber without the
admission of atmospheric air to the reservoir.
The letter E indicates the carbureting chamber.
This is preferably formed of a rectangular box and is connected with the
eduction pipe F2 of the meter by means of a suitable coupling G³.
The carbureter however may be in the form of a coiled pipe, or may be
constructed in any other approved manner without departing from the spirit of
my Invention.

page_text: The letter H indicates the eduction pipe of the carbureter adapted to be
connected by means of a suitable coupling 1 with ordinary service pipe.
The letter L³ indicates the induction pipe leading from the main to the meter,
and M³ the taps, by means of which the products of condensation may be drawn
off from the meter and carbureter should any of such collect.
The shelf at the upper part of the carbureter has its bottom slightly elevated
from the front to the rear, as indicated by Fig. 8 of the Drawings, so as to
insure the distribution of the carbureting material properly over the inner walls of
the carbureter.
In the modification shown in Figs..10 and 11, the valvo casing and carbureting
chamber are constructed in two united sections a, b, secured together by means of
a screw thread or joint c, or in any other convenient manner.
The upper section or valve chamber is provided with an inclined, conoidal, or
beveled valve seat through which extend the ports f
The letter e indicates two radial recesses in the face of the valve seat which are
located midway between the ports fand diametrically opposite each other.
The said recesses extend about half way from the center to the edge of the seat,
as indicated in Fig. 11.
The ports are located about half way between the center and edge of the seat,
as indicated in Figs. 9 and 11 of the Drawings.
The letter indicatos a valve which has an inclined, conoidal, or beveled face,
and which is adapted to set upon the valve seat Z' and rotate freely thereon.
The said valve on its face is provided with a series of radial recesses n which
extend from about half way from the center to near the edge of the said valve for
the purpose more fully hereinafter specified.
This is constructed in the form of a shell or annular vessel, and is of a diameter
somewhat less than the casing, in order to leave a space between its outer wall
and the inner wall of the casing through which the hydro carbon may pass from
above to the recesses in the valve and valve seat.
The hollow portion of the valve is filled with lead, or otherwise weighted, so as
to hold it to its seat against any pressure of gas or air from below.
The letter B¹ indicates a valve stem which extends downwardly from the center
of the valve through a central tubular opening i in the valve sent
The lower end of the said stem is slotted as indicated, and is adapted to set into
the upper end of a vertical tubular shaft journalled in a bearing centrally located
at the bottom of the lower section of the valve casing. The slotted portion of said
stem is adapted to set over a "bridge" secured in the upper end of the tubular
shaft, which extends through a packing land a gland or screw cap m which has
a conoidal top so as to shed any inflowing hydro carbon, and prevent the same
from escaping into the meter below.
The valve stem is also provided with a conoidal shield n, which serves
additionally to deflect the hydro carbon, and confine it to the carbureting
chamber.
The lower end of the tubular shaft is provided with a solid termination o from
which extends a horizontal tubular rod p which passes loosely through an opening
in a head r swivelled to a pin & adjustably secured by means of the nuts t to the
screw threaded end of the horizontal arm u of the vertical shaft v of a meter or
other measuring device.
'
The letter windicates one of the parallel guide rods of the meter which is
swivelled to the pin.
The letter a indicates the top or cover of the valve casing.
This is provided with an annular boss which may be connected with a pipe
leading from a suitable hydro carbon reservoir.
The space is for the purpose of collecting any solid impurities which may settle
from the liquid bydro carbon on its passage to the valve casing, and thus prevent
any injury to the valve and valve seat.

page_text: The letters b' and c' indicate the induction and eduction pipes for the gas or
air.
The induction pipe may be suitably connected with the meter so as to receive
the measured gas or air passing through the same, and the eduction pipe connects
with the main, leading to the burners as usual.
The operation of my Invention will be readily understood in connection with the
above description, and is briefly as follows:-
The distributing or delivering valve is rotated by tho registering mechanism of
the meter or measuring apparatus for the gas or air.
As the said valve is rotated, its chambers, which are of a determined capacity,
are filled from the reservoir, and discharge their contents into the carbureter in
direct ratio to the volume of gas consumed.
The chambers may be made of any desired capacity, so as to distribute the
carbureting fluid through the carburoter in a film of any required thickness, to be
determined by the volatility or density.
As constructed it will be perceived that there is a continuous uninterrupted flow
of hydro carbon fluid into the carbureter, which is essential when such fluid is
exposed in a thin film, to secure uniform evaporation and a steady light of a
practically unvarying candle power.
Having thus described my Invention, what I claim as new and desire to secure
by Letters Patent is,―
1st. The feed mechanism for supplying continuously a thin film of hydro-carbon
to the carbureter, in combination with a meter and connecting operating
mechanism, whereby the volume of gas or air flowing to the burner controls the
quantity of carbureting fluid exposed to the passing current of gas or air, sub-
stantially as specified.
2nd. In combination with a valve provided with recesses on its face, a valve
casing provided with induction and eduction ports, and a meter and connecting
mechanism whereby the carbureting fluid may be supplied from a suitable reservoir
to the carbureter continuously, substantially as specified.
3rd. The combination in a carbureter of a single valve provided with recesses of
a given capacity, with a valve casing in which said valve is adapted to rotate the
valve casing, being provided with induction and eduction ports communicating
with a supply reservoir and a carbureter respectively, and mechanism operating in
conjunction with the metrical mechanism of the apparatus to supply the carbureter
continuously with the hydro carbon in regulated quantities, substantially as
specified.
4th. The combination with a valve having a beveled, conoidal, or inclined face,
and provided with suitable recesses, of a valve seat having an oppositely beveled,
conoidal, or inclined face, and provided with suitable induction and eduction ports
and mechanism for operating the said valves, substantially as specified.
5th. The combination with a valve having a beveled, conoidal, or inclined face
provided with recesses, of a valve seat provided with suitable induction and
eduction ports for the purpose of metrically supplying the hydro carbon contained
in a suitable reservoir to the measured gas or air, substantially as specified.
6th. A recessed valve for distributing carbureting fluid to a passing current of
gas or air, the said valve being actuated by a suitable device for measuring the gas
or air, substantially as specified.
7th. The combination with the valve and the valve casing of a valve shaft
slotted at its inner end, and the shaft of the actuating mechanism provided with a
transverse pin with which the slot is adapted to engage, and the actuating
mechanism connected by suitable gearing with the measuring or indicating
mechanism, substantially as specified.
8th. The combination with the valve shaft and the valve casing of a gland and
packing, whereby the carbureting fluid is confined to the valve casing and pre-
vented from escaping to the meter, substantially as specified.

page_text: 9th. In combination with the valve chest provided with an inclined, conoidal
or beveled seat, having ports and recesses as described, the valve having an
inclined, conoidal, or beveled seat and a series of radial recesses, substantially as
specified.
10th. In combination with the valve casing and carbureter, the valve and valve
seat provided with recesses and ports as described, and the valve stem and vertical
rotating shaft and connecting mechanism, substantially as specified.
11th. In combination with the valve chamber and carbureter, and the valve and
valve seat provided with ports and recesses as described, the conoidal shield or
distributor secured to the valve stem, substantially as and for the purposes
specified.
12th. In combination with the vertical shaft which actuates the valve, and the
horizontal arm secured thereto, the contral meter shaft and its horizontal arm, and
the swivelled head secured there to, through which head passes loosely the arm of
the valve actuating shaft, whereby the valve is operated without the use of ordinary
gearing, substantially as specified.
In witness whereof, I, the said Herbert John Haddan, have hereunto sot
my hand and seal, this Twenty-third day of November, A.D. 1881.