Improvements in Carburetting-apparatus.
Year: 1897

page_text: Date of Application, 11th Jan., 1897-4ccepted, 27th Feb., 1897
COMPLETE SPECIFICATION.
Improvements in Carburetting-apparatus.
We CHARLES GAUTIER and XAVIER WEHRLE, both of Boulevard
Haussmann, Paris, in the Republic of France, Constructive Engineers, 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:-
Carburetting apparatus are divided into two categories or types namely,
(1) those, into which the air is forced by fans or the like, and (2) those, into which
the air is drawn by suction. Apparatus of the first type, which are supplied by
pump or the like, require a special mechanism, the operation of which is
dependent upon the action of a motor; the motor being on its part likewise
dependent on the action of the carburetting apparatus. The consequence thereof
is that the starting operation, effected by hand, proves often lengthy and
difficult.
Carburetting apparatus operated by suction are also of various kinds, namely,
those in which the carburation is effected by atomizing the liquid gasoline,
petroleum essence or oil; and others in which the carburation is effected by the
contact of the air with the liquid in motion. Apparatus of the former kind are
less complicated and consequently preferable to those of the latter kind.
In the apparatus which forms the subject of this invention the air is drawn
in by suction and the carburation is effected by atomizing the carburetting
liquid.
The advantage of this apparatus consists in its small bulk and its absolute
reliability of action, as soon as the motor has been started.
The following description applies to a motor with two cylinders.
In the accompanying drawings,
}
Figures 1, 2, 3 and 4 represent the whole carburetting apparatus as seen from
four sides,
Figure 5 is a longitudinal section and Figure 6 a cross section thereof;
Figure 7 shows a tubular attachment to suit other conditions.
I
The apparatus comprises a certain number of constituent parts, these are the
mixing box or chamber A (Figures 1, 2, 3, 4, 5 and 6); the perforated cover.B
(Figures 1, 4, 5 and 6); the cap C (Figures 1, 3, 4, 5 and 6); the connection D
(Figures 1, 2, 5 and 6) and the clack valve E (Figures 5 and 6).
The box or chamber A communicates with the explosion chambers of the motor by
way of the tubes a a' (Figures 1 and 3) which convey the carburetted air into the
cylinders, which latter form a suction apparatus when the piston is started. The
air to be carburetted passes into the box A in sufficient quantity through the
opening b (Figure 1), to which a pipe for conducting in the air from without is
attached.
The cover B, screwed into the chamber A is provided with holes c (Figure 6)
serving to admit a quantity of air the object of which is to correct, as will be
hereinafter shown, the incomplete carburating of the air arriving through the
opening b.
The apparatus is either simple or provided with tubular connection according as
access to the carburator is obtainable easily or not. Figure 7 shows the junction

page_text: piece which connects the tubular connection to the chamber. The perforated
cover is screwed to the extremity of the said tubular connection.
The cap or disc C covers the perforated cover B and is like the latter pierced
with holes of the same diameter and of equal number. This cap can turn around
the axis within the limit of the diameter of the holes so that the latter may be
entirely stopped; for this purpose the cap is provided with a groove or recess of
suitable length traversed by a screw d (Figures 1, 5 and 6) screwed in and fixed to
the cover B.
By turning the cap the width of the holes is either diminished or increased and
the admission of air to the chamber is thus regulated.
The cap thus serves to regulate the carburetting process. The tubular piece D
serves to connect the box to the hydrocarbon receptacle, which is placed at a
higher level. It serves as a conduit for the passage of the liquid and is screwed to
the chamber in the manner shown in Figures 5 and 6. The orifice of the conduit
is widened to form a seat for the conical part of the clack valve E.
The clack valve (Figures 5 and 6) comprises a valve body E and a rod f. The
upper part of the latter serves as a guide in the reciprocating movement of the
valve. It is conical at 9 (Figures 5 and 6) where it closes the passage for
the hydrocarbon conveyed through the tubular connection D. Below this part g,
its diameter is smaller than that of this conduit in order that the liquid may pass
upward around it. It terminates at in a piece of cross shaped section the edges
of which serve as a guide, the hydrocarbon flowing past the flat sides.
The apparatus operates as follows:-
At the first stroke of the piston, which as is known, is usually effected by hand,
by means of the crank or otherwise, air flows through the orifice b and lifts the
valve E which obstructs its passage.
The conical portion g below the valve, opens the conduit for the passage of the
hydrocarbon and the latter from a higher level immediately emerges and is atomized
by the air current, the mixing operation is regulated by means of the holes
provided in the cap C and the cover B and the carburetted air is drawn toward
and into the chamber where the ignition and explosion takes place. The piston
again moves outward and produces a partial vacuum causing a fresh admission and
mixing operation, and so on.
The regulation of the mixing is very easily effected by means of the holes in the
disc; the more these holes are opened, the more air will be admitted through
them, while the amount admitted through the opening b is reduced. When the
valve is lifted with less force, a smaller quantity of the essence or hydrocarbon is
admitted.
The spring e wound spirally around the rod is for the purpose of limiting the
upward movement of the valve and causing it to very rapidly descend when the
speed of the motor is very high.
Such is the carburator forming the subject of this invention. When arranged
in the manner just described, the carburator may be used with a motor having two
opposite cylinders, but we may modify the apparatus so as to render it applicable
to connected or compound cylinders, or to a single cylinder.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. An improved carburetting apparatus in communication with an air inlet and
an admission inlet for the carburetting liquid, the latter inlet being alternately
closed by a valve, provided with an opposing spring, and opened by the suction
resulting from the receding movement of the piston or pistons during the action of
the motor, the air thus drawn in atomizing the carburetting liquid; the supply of
air admitted to the mixing chamber being regulated by means of a device adapted
to block more or less, the holes provided in the cover or the like, substantially as
described.

page_text: 2. A carburetting apparatus substantially as described and represented in the
accompanying drawings.
Dated this 11th day of January 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, W.C., Agents for the Applicants.