IMPROVE- MENTS IN APPARATUS FOR CARBURETTING GAS
Year: 1862

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London, Patent Agent, for the Invention of "IMPROVE-
MENTS IN APPARATUS FOR CARBURETTING GAS."-A communication from
abroad by Louis Bricout, Julien Bricout, and Emile Berlet, all of Reims,
France.
Sealed the 13th April 1868, and dated the 14th October 1862.
PROVISIONAL SPECIFICATION left by the said Richard Archibald
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 14th October 1862.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City
of London, Patent Agent, do hereby declare the nature of the said Invention
for IMPROVEMENTS IN APPARATUS FOR CARBURETTING GAS," (communicated to
me from abroad by Louis Bricout, Julien Bricout, and Emile Berlet, all of
Reims, France,) to be as follows:-
This apparatus for carburetting gas may be divided into three parts, con-
sisting, first, of a vessel or reservoir for containing the carburetting liquor;
second, of the carburator proper, fed by the first-named vessel; and, third,
of certain valve and tap arrangements, all as hereafter described.
The vessel or reservoir for containing the carburetting liquid is placed above
and is independent of that of the carburator, and can be removed from it to be
supplied with liquid. The reservoir consists of a vessel, by preference of zinc,
with an aperture at top for the introduction of liquid, which is hermetically

page_text: closed by a stopper screwing on to a flange, and kept tight by packing. The
reservoir is put in communication at bottom with the carburator by a tube, the
mouth of which is covered by metallic cloth to filter the liquid as it flows out.
The reservoir is supported on feet which rest on the carburator, and the feet fit
over it. There is an air tube leading from the carburator to the reservoir
above, passing, when the latter is fixed to the carburator, through one of the
feet, and extending to near the top of the reservoir, but when the reservoir is
not attached to the carburator the air tube is replaced by a gas pipe. The
carburator is supplied by liquid from the reservoir through the tube and valve
arrangement to be hereafter described. It is divided by partitions into three
compartments, each of which forms a small vessel, the depth varying according
to the size of the apparatus. These vessels are fitted with cotton wicks
extending vertically the whole depth or--nearly so of the apparatus. In the
two upper compartments the level of the liquid is regulated by two small tubes
which carry the overflow from one into the other and into the lower vessel.
There is a safety compartment at the bottom of the carburator, which through
a tube receives any excess of liquid that may be produced. The gas after having
passed through a tap of peculiar construction and hereafter described, reaches
the carburator through a pipe and descends by another pipe to the lower part,
whero after having traversed in a zig-zag, direction, the three compartments,.
fitted with wicks and thus becoming enriched, issues from the apparatus by
another pipe provided for that purpose. To empty the carburator a two-way
valve is opened by a key extending outside the carburator, and the contents of
the upper vessels are conveyed away by tubes. To empty the overflow and
the lower basin two taps parallel to each other are opened, each tap being at
other times stopped by a stopper. The carburator is fitted at top with a
cover.
The valve arrangement is composed of three principal parts,-a tube, a tap,
and a valve; the tube is connected to the liquid reservoir, and terminates in an
enlarged head fitted so as to hermetically close the valve chamber; the tube is
fitted at its upper part with a tap, which must be closed whenever the reser
voir is removed, a joint-screws on to the body of the valve. The valve proper
is formed with a conical head. fitting into a conical seat; the conical head is
formed on a rod screwing into a. spring, which exerts, a strong pressure from
top to bottom, and. thereby keeps the valve: closed. A..weighted, float, con-
nected to a lever free to oscillate upon, a fixed, point, imparts to the valve
an upward motion, and exerts sufficient, power to overcome the resistance
offered by the spring, whereby the valve is opened and passage is allowed to
the carburetting liquid until a certain level is attained in the vessels in the

page_text: carburator, then the float in rising ceases to keep the valve closed, when the
spring acts to keep it in its seat, and thereby closes and stops communication
between the carburator and reservoir. The metal reservoir may be replaced
by a glass vessel fitted with tubes or necks at top and bottom. The upper
tube serves for the introduction of liquid into the reservoir, and is closed by a
glass or metal stopper. A copper pad divided into two parts embraces the
neck of the vessel and receives a screw cap, into which a metal top is screwed.
The lower tube or neck allows the passage of liquid to the valve before described
and is surrounded by a metal ring also divided into two parts, which presses
against the fitting on the edge of the neck, and screws into the intérior of the
body.of the valve similarly to that before described. The air tube: in this
arrangement passes through the glass and acts as a guide to it. A four-way
tap is fitted to the carburator by which the gas is conveyed, two passages
for the supply and two for leading it to the carburator; the key has six openings
in pairs, together making three passages.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent Office
on the 14th April 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN; of 166, Fleet Street, in the City of London, Patent
Agent, send greeting.
•
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of October, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Richard Archibald Brooman, 'Her special licence that I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, or such
others as I, the said Richard Archibald Brooman, my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVEMENTS IN APPARATUS FOR CARBURETTING
GAS," (communicated to me from abroad by Louis
Louis Bricout, Julien Bricout,
and Emile Berlet, all of Reims, France,) upon the condition (amongst others)
that I, the said Richard Archibald Brooman, my executors or adminis-

page_text: trators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed;
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Richard Archibald Brooman, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings hereunto
annexed, that is to say:
This apparatus for carburetting gas may be divided into three parts, con-
sisting, first, of a vessel or reservoir for containing the carburetting liquid;
second, of the carburator proper, fed by the first-named vessel; and, third, of
certain valve and tap arrangements, all as hereafter described.
Figure 1 of the accompanying Drawings is a longitudinal section of an
apparatus for carburetting gas constructed according to this Invention.
A is the vessel or reservoir for containing the carburetting liquid, and B is
the carburator proper. The reservoir A is placed above, and is independent
of the carburator B, and can be removed from it to be supplied with liquid.
The reservoir A consists of a vessel, by preference of zinc, with an aperture a
at top, for the introduction of liquid, which is hermetically closed by a
stopper entering the part c, and covered with packing d, which makes a
tight joint in the cap e, which is screwed on to the part c. The reservoir A is
supplied with carburetting liquid as required by a portable reservoir put in
communication therewith by the aperture a. The reservoir A communicates
at bottom with the carburator B by a tube f, the mouth of which is covered
by metallic cloth g, to filter the liquid as it flows out. The reservoir is
supported on feet h, which rest on the carburator, and the feet fit over it.
There is an air tube j, leading from the carburator B to the reservoir A,
passing when the latter is fixed to the carburator by preference through one of
the feet h, and extending to near the top of the reservoir; but when the
reservoir is not attached to the carburator, the air tubej is replaced by a gas
pipe. The carburator B is supplied with liquid from the reservoir A by means
of the tube fand the valve arrangement C, hereafter described. It is divided
by partitions K, K', K", into three compartments, each of which forms a
small vessel, the depth varying according to the size of the apparatus. Theso
vessels are fitted with cotton wicks 1, extending vertically the whole depth, or
nearly so of the apparatus. In the two upper comparturents the level of the

page_text: liquid is regulated by two small tubes m, m', which carry the overflow from
one into the other, and into the lower vessel. There is a safety compart-
ment D at the bottom of the carburator, which through a tube E receives any
excess of liquid that may be produced. The gas after having passed through
a tap of peculiar construction, and hereafter described, reaches the carburator
B through a pipe EI, and descends by another pipe I to the lower part, where
after having traversed in a zig-zag direction the three compartments fitted
with wicks, and thus becoming enriched, issues from the apparatus by another
pipo H provided for that purpose. To empty the carburator B, first open the
interior tap or taps below the upper vessels; this tap, or these taps is or aro
opened from the outside by a prolongation of the axis o, which fits into the
head p screwed to the side of the apparatus. Where-two taps are employed, as
shewn in the Drawing, each of the vessels K, K¹, is provided with a tube n
or n¹ leading to one of the taps 'd, d'. When only one tap is employed, it is
furnished with two apertures, each leading to one of the said vessels; secondly,
to empty the carburator, open two parallel taps placed one on each side at the
bottom of the carburator. The carburator B is fitted at top with a cover B¹..
The valve arrangement C is composed of three principal parts, a túbe, a tap,
and a valve. The tube f is connected to the reservoir A, and terminates in an
enlarged head f¹, fitted so as to hermetically close the valve chamber; the.
tube f is fitted at its upper part with a tap s, (see the detached view, Figure 2,)
which must be closed whenever the réservoir A is removed; a joint & screws
on to the body C of the valve. The valve proper u is formed with a conical:
head fitting into a conical seat; the conical head is formed on a rod'u³, screwing.
into a spring e, which exerts a strong pressure from top to bottom, and thereby
keeps the valve closed. A weighted float P, connected to a lever Q free to
oscillate upon a fixed point, imparts to the valve u, u', an upward motion, and
exerts sufficient power to overcome the resistance offered by the spring v;
whereby the valve is opened, and passage is allowed to the carburetting liquid
until a certain level is attained in the vessels in the carburator B, then the
float in rising ceases to keep the valve closed, when the spring v acts to keep
it on its seat, and thereby closes and stops communication between the car-
burator B and reservoir A. In order to shew the quantity of carburetting
liquid contained in the reservoir A, a float is used for indicating the level of
the liquid in the reservoir. The rod h' of a float f¹ (see Figure 1) is attached
at its extremity to a needle 9 of the scale 1. The top of the reservoir A is
raised at to receive the float f¹ when the reservoir is quite full. There is
also a recess or cavity m³ at the bottom of the reservoir to receive the float
when the reservoir is quite empty. This arrangement gives a correct
',

page_text: :
indication of the level of the carburetting liquid in the reservoir. Although
I have shewn the valve arrangement C, placed in one of the feet of the
reservoir A as being most suitable, yet it may occupy any other convenient
position. The metal reservoir A may be replaced by a glass vessel A¹,
Figure 3, fitted with tubes or necks T, T', at, top and bottom. The upper
tube T serves for the introduction of liquid into the reservoir A', and is closed
by a glass or metal stopper y. A copper pad divided into two parts embraces
the neck of the vessel A', and receives a screw cap ¹, into which a metal
top is screwed. The lower tube or neck T¹ allows the passage of liquid to
the valve u, before described, and is surrounded by a metal ring w, also divided
into two parts, which presses against the fitting on the edge of the neck, and
screws into the interior of the body of the valve C, similarly to that before
described. The air tube in this arrangement passes through the valve, and
acts as a guide to it. A four-way tap R is fitted to the carburetting apparatus,
see Figures 3 and 4, by which the gas is conveyed. The two passages 1 and 4
of the tap are for the supply of the gas, and the other two passages 2 and 3
are for leading it to the carburator. The keys has six openings, 1', 21, 3¹;
4, 5, and 6, in pairs together, making three passages. In the section,
Figure 4, the tap is shown open to the carburator, the gas enters by 1, 11, 21,
and 2 into the carburator B, and passes out by 3, 31, 41, and 4. To reverse
the tap, turn the key s, so that the opening 6 may correspond with the
passage 1 for the admission of gas, and the opening 5 with the passage 4 for
the exit of the gas; the passages of the carburator are thus closed by the full
parts of the key s.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim, the improvements
in apparatus for carburetting gas, herein-before described and illustrated in
the accompanying Drawings.
In witness whereof, I, the said Richard Archibald Brooman, have here-
unto set my hand and seal, this Fourteenth day of April, One thousand
eight hundred and sixty-three.