Improvements in or relating to Carburetters for Internal Combustion Engines.
Year: 1898

page_text: Date of Application, 17th Feb., 1898-Accepted, 23rd Apr., 1898
COMPLETE SPECIFICATION.
Improvements in or relating to Carburetters for Internal Combustion
Engines.
A communication from LA SOCIÉTÉ NOUVELLE DES ETABLISSEMENTS DÉCAUVILLE
AINE, Engineering Works, of 13, Boulevard Malesherbes, Paris, in the
Republic of France.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
The carburetter forming the subject of the present invention is destined to
supply internal combustion engines used for any purpose, but more particularly for
the purposes for propelling road-carriages with the explosive mixture necessary for
their working.
A carburetter according to the present invention is illustrated by way of
example in the accompanying drawing in which
Fig. is a longitudinal section,
Fig. 2 a vertical cross section and
Fig. 3 a plan corresponding to Fig. 1.
The carburetter is chiefly constituted by a rectangular or other shape receptacle A
the upper wall of which, open at B is surmounted by a cap or cover C supporting a
cock controlling the admission pipes EF connected with the motor, the number
of said admission pipes of course varying with the number of motor cylinders to be
fed. This cock D is combined with another cock G communicating with the
interior of the carburetter through a branch or passage H and can also be put in
communication with the atmosphere by means of an air inlet I with which it is
provided, so that by regulating the position of its valve the quantity of explosive
mixture admitted to the distributing cock I is also regulated.
In the receptacle A is suspended a wick J of such height as to reach from its
point of attachment K at the joint of the cap C and the receptacle A, nearly down
to the bottom of the latter, passing through the liquid say, petroleum contained
therein. This wick J is arranged so as to form in the receptacle A a wall dividing said
receptacle into two compartments K L one compartment being in the centre of the
apparatus and the other compartment L surrounding it and being separated from it
by the wick J and by the layer of liquid which it absorbs.
Two suitably arranged air-inlets M N supported by the cap C place the outer
compartment L in communication with the atmosphere so that the suction produced
through the passage H above the compartment K draws the air entering the com-
partment L through the air inlets M N through the wick J which is thoroughly
and entirely impregnated, by capillarity, with the liquid into which said wick dips,
and thus, in passing through the wick, the air becomes sufficiently carburetted, and
is ready to be drawn in by the motor with which the carburetter is connected.
At the bottom of the receptacle A there is arranged a coiled or bent tube O
destined to receive from the motor, or preferably from a silencer combined with a

page_text: motor through a tube P the combustion gases which in their passage heat the coil ()
and thereby the liquid in the receptacle A in- which said tube is arranged. The
volatilisation of the liquid is thus assisted. At the end opposite to that connected
with the tube P the coiled tube O is provided with a nozzle or opening projecting
beyond the receptacle through which nozzle the combustion gases escape into the
atmosphere.
One of the vertical walls of the receptacle A is preferably provided with a
window to enable the level of the liquid to be observed. The liquid may be sup-
plied to the receptacle A directly through an upper brauch S provided with a
plug T or it may be continuously supplied through a lower branch U connected
to a supply tank.
A cock Vat the bottom enables the carburetter to be completely emptied for
cleaning or other purposes.
Having now particularly described and ascertained the nature of this invention
as communicated to me by my foreign correspondents and in what manner the
same is to be performed I declare that what I claim is :-
1. A carburetter for internal combustion engines comprising a reservoir divided
into two compartments-central and outer compartiments-by means of a depending
wick the upper edge of said wick being secured around the edge of an opening
provided in the upper side of the reservoir by means of a cap covering said opening,
said cap supporting tubes for admitting air into the outer compartment of the
receptacle, and a cock H, for taking the explosive mixture from the cap C, in com-
munication with the inner compartment of the receptacle and provided with an
air inlet I to enable the carburetted air to be diluted with air, if desired, before
it reaches a second cock through which it is supplied to the motor substantially as
described.
2. The combination and arrangement of parts constituting the complete
carburetter for internal combustion engines substantially as described and
illustrated in the accompanying drawings.
נד
14 17th love of Folwuary 1898.
BOULT & WADE,
Agents for the Applicant.