IMPROVEMENTS IN CARBURETTERS
Year: 1875

page_text: LETTERS PATENT to George Grundy, of Chapel Lane, near Tunstall,
in the County of Stafford, for the Invention of "IMPROVEMENTS IN
CARBURETTERS."-A communication from abroad by John R. Allen,
of Chicago, in the State of Illinois, in the United States of
America.
PROVISIONAL SPECIFICATION left by the said George Grundy at the
Office of the Commissioners of Patents, with his Petition, on the
20th November 1875.
I, GEORGE GRUNDY, of Chapel Lane, near Tunstall, in the County of
Stafford, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN CARBURETTERS," a communication to me from abroad by
John R. Allen, of Chicago, in the State of Illinois, in the United States
of America, to be as follows:-
This Invention relates to certain improvements in apparatus for
carburetting air or gas for the purpose of illumination and heating, its
object being to thoroughly and unformly charge the air or gas with the

page_text: vapor of the hydrocarbón liquids, such for example as naptha, benzine,
and the like, in such a.manner as to produce when burnt a brilliant and
steady flame.
The Invention consists of an open mouthed vessel formed of two
concentric cylinders united to a common bottom, and so arranged that
an annular space is left between the two for containing water, in which
annular space an ordinary gas holder is set. The inner cylinder which
forms the carburetting chamber is constructed with a flaring mouth, the
object of which is to prevent any hydrocarbon fluid from being carried
over into the annular chamber between the two cylinders, and thus to
avoid waste. Near the bottom of the inner chamber there is arranged
a distributing box having discharge pipes with an elbow or bend
deflecting the air on the bottom of the carburetter in opposite directions
and making a thorough agitation of the hydrocarbon fluid. To the ends
of the said pipes or arms there is attached a foraminous piece of tin or a
piece of wire gauze to assist in the agitation. The box is secured to the
air or gas supply tube which enters at the centre of the apparatus
projecting upward therein, and is provided with a screw thread upon
which the lower end of a tube which passes up through the bottom of
the box may be secured. This tube is rigidly attached to the bottom of
the box and projects into the same, terminating about the middle of the
box, and serving to hold the box in proper position. To the top of the
box there is attached a handle by means of which it can be secured in
the apparatus or removed at pleasure.
The air supply pipe extends upon, the outside to a height above the
level of the hydrocarbon liquid contained in the inner chamber of the
apparatus, and is connected with any suitable blast apparatus or gas
holder.
The pipe may also serve to introduce the hydrocarbon liquid to the
apparatus, in which case it is provided with a funnel end and stop-cock
at its upper end, the blast or gas pipe being tapped into its side below
the said funnel. This will be found the most convenient arrangement
for filling or charging the carburetter with hydrocarbon liquid, although
it may be dispensed with and the hydrocarbon introduced by removing
the gas holder.
The exit pipe or escape for the carburetted air or gas extends down-
wards from the top or at a point near the top of the outer cylinder

page_text: through the bottom of the apparatus, and is connected with the service
pipe leading to the burners. The inner chamber or carburetting
chamber being surrounded by water with which the annular chamber is
filled will be thereby rendered safe against fire, and all danger of
explosion will be avoided.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Grundy in the Great Seal Patent Office on
the 17th May 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
GRUNDY, of Chapel Lane, near Tunstall, in the County of Stafford, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of November, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said George Grundy, Her special
license that I, the said George Grundy, my executors, administrators,
and assigns, or such others as I, the said George Grundy, my executors,
administrators, or 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
CARBURETTERS," a communication to me from abroad by John R. Allen,
of Chicago, in the State of Illinois, in the United States of America,
upon the condition (amongst others) that I, the said George Grundy,
my executors or administrators, by an instrument in writing under my
hand and seal, 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.
3.. de borehu deplexi

page_text: k
in the agitation. The box is in communication with the air supply
pipe by means of a tube which is screwed into the pipe k, and also
into the bottom of the box g, into the interior of which it projects,
terminating about the middle of the box and serving to hold the box in
proper position. To the top of the box g there is attached a handle m
for the facility of securing the box in the apparatus and removing it as
required.
The air supply pipe / extends upon the outside to a height above the
the level of the hydrocarbon liquid contained in the inner chamber a of
the apparatus, and is connected with any suitable blast apparatus or gas
holder.
The pipe may also serve to introduce the hydrocarbon liquid to the
apparatus, as in the example represented in the Drawings, in which
case it is provided with a funnel and stop-cock 2 (as shown in the
Drawing) at its upper end k¹, the blast or gas pipe k² being tapped into
its side below the said funnel. A cock p is provided for the discharge of
the oil contained in the pipe k. This will be found the most con-
venient arrangement for filling or charging the carburetter with
hydrocarbon liquid, although it may be dispensed with and the hydro-
carbon be introduced by removing the gas holder e.
The exit pipe or escape n for the carburetted air or gas extends
downwards from the top, or a point near the top of the outer cylinder b
through the bottom c of the apparatus, and is connected with the service
pipe o leading to the burners. By reason of the inner or carburetting
chamber a being surrounded by water with which the annular chamber d
is nearly filled, a complete immunity from the danger of fire and
explosion is obtained.
Having now described and particularly ascertained the nature of my
said Invention, and it what manner the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention secured to
to me by the herein-before in part recited Letters Patent is,-
First. Constructing carburetters with an inner carburetting chamber
having a flaring mouth, and with an outer water chamber in which a
gas holder works in combination with inlet and outlet pipes or passages,
all arranged substantially as and for the purposes herein-before described
and as illustrated by my Drawings.

page_text: Secondly. The combination with an induction pipe for introducing
the air or gas to be carburetted into a carburetting chamber of an
intermediate box or chamber having radiating or diverging, bent, or
curved pipes or conduits for distributing and deflecting such air or gas
as it is discharged into the carburetting chamber, and thereby agitating
the carburetting liquid, substantially as herein-before described and
illustrated by my Drawings.