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Патент USA US2105300

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Jan. 11, 1938.
‘
F-. N. RUSSELL
2,105,300
CARBURETOR
Filed March 13, 1937
VI /IA,»
r
ATTORN EYS .
Patented Jan. 11, 1938
'
2,105,309
UNITED‘ STATES
PATENT OFFICE
2,105,300
CARBURETOB.
Frank N. Russell, Oakland, Calif.
Application March 13, 1937, Serial No. 130,636
4 Claims.
This invention relates to carburetors, and has
for an object to provide a construction wherein
there is provided an improved carburization of
the gasoline before it reaches the intake mani
5» fold of an engine.
Another object of the invention is to provide a
carburetor having a mixing or vaporizing cham
ber wherein atomized gasoline is discharged.
An additional object of the invention is to pro
(Cl. 261—-78)
the throats H and H’ the vaporized or atomized
gasoline and the air both enter the tubular out
let 2 in parallel streams. These streams mix as
they pass upwardly to the outlet end of member i.
In case any uncarbureted gasoline passes into the
member I, it is supplied with fresh air from the
respective pipes l3 and [4 which are of differ
ent heights. These pipes are carried by wall l2
and extend centrally into the tube l. Wall 2 is
10 vide a carburetor having an atomizing structure
provided with a passageway l5 for each of the
for directing a mixture of air and gasoline to an
pipes I3 and I4 so that air passing inwardly
through the auxiliary air inlet 8 will strike wall l2
and part of the air will be de?ected upwardly and
part will pass into the passageways l5 and thence
outlet ‘together with auxiliary air supplying
means for providing air at different points along
the travel of the air and gasoline mixture.
In the accompanying drawing:
Fig. 1 is a longitudinal vertical sectional view
through a carburetor disclosing an embodiment
of the invention;
Fig. 2 is a horizontal sectional view through
20' Fig. 1 approximately on the line 2-2;
Fig. 3 is a transverse sectional View through
Fig. 1 on the line 3—3;
Fig. 4 is a transverse sectional view through
Fig. 1 on the line 4-4;
Fig. 5 is a fragmentary side View showing an
25
accelerator lever and associated parts embodying
certain features of the invention;
through pipes i3 and I4.
As shown
chamber l6
of gasoline.
desired kind
in Fig. 1, there is provided a ?oat
which is adapted to carry a supply
This ?oat chamber may be of any
and is provided‘ with a ?oat ll reg
ulating the valve l8 through which gasoline
passes from the supply pipe IS. The lid or cover
20 may be secured to the chamber IS in any de
sired way and a Supporting pipe 2| is secured to
lid 12 by nuts 22 and 23. Pipe 2| is screwed into
a suitable threaded opening 24 formed in casing
The tubular outlet ex
'i so that a plurality of tubes 25 may extend from
near the bottom of chamber [6 upwardly into
the chamber l0’. These pipes may be held in
place by friction or other means and are slightly
bent at the upper ends as shown in Figs. 1 and
4. Also it will be observed that the upper ends
are at different elevations coacting with the pas
sageways or apertures 26, 21, and 28 formed in
the valve casing 29, which casing has a bore for
35' tension I is adapted to be bolted or otherwise rig
accommodating the valve 4, passageways 30, 3|,
Fig. 6 is an elevation of one of the valves shown
in Fig. 1, the same being on an enlarged scale;
Fig. '7 is a fragmentary sectional view through
Fig. 6 approximately on the line 7-7.
Referring to the accompanying drawing by
numerals, I indicates a tubular pipe forming part
of the outlet member 2.
idly secured to an intake manifold of an internal
and 32, as well as the chamber 33. An air inlet
combustion engine. If desired, a butter?y throttle
pipe 34 continually comunicates with the cham
valve 3 could be arranged in the tubular mem
ber l near the outlet end. However, this throttle
40‘ valve, which is the usual kind now in common
use, could be eliminated, but if used it must be
connected up to function in synchronism with the
valve member 4 hereinafter more fully described.
The tubular outlet 2 is formed as a T-shaped
member with the legs 5 and 5 connected respec
tively to the casing ‘l and the pipe 8.
Pipe 8
acts as an auxiliary air inlet pipe and is provided
with the usual butter?y choke valve 9. Casing l
with portion ill of leg 5 forms a vaporizing
chamber having a throat or outlet passageway I I
discharging into the tubular outlet 2. An abut~
ment or wall I2 is arranged in line with the cen
ter of the tubular outlet 2 and forms a division
wall between the vaporizing chamber [0’ and the
55 air inlet 8. It will be noted that by reason of
ber 33 and is supplied with air from a suitable
source of compressed air, as for instance a pump
or a tank ?lled with compressed air. From this
it will be seen that whenever valve 4 is open fully
or partly, air will rush into the chamber I0’ and
will pass over one or more of the upper ends of
tubes 25 whereby gasoline will be drawn up the
tubes and discharged with the air into chamber
NJ’ in an atomizing manner.
The valve 4, as shown more particularly in
Figs. 6 and 7, is provided with passageways 35,
36 and 3'! cooperating with the passageways 30,
3| and 32 and the outlet openings 26, 21 and 28. 50
By this arrangement when the valve 4 turns a
certain distance, air will pass through passage
way 35 and blow across the top of the lowermost
tube 25 so as to provide a certain volume of va
porized or atomized gasoline. If the valve 4 is 55
2
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2,105,300
turned a further distance, air will pass through
the passageways 35 and 36 vso that gasoline will
be fed from the second highest tube 25, and if
the valve 4 is turned to its full open position, air
will pass through all three passageways in the
valve so that a maximum atomizing effect is pro
duced and consequently a maximum supply of
vaporized gasoline is directed to the tubular out
let 2.
' Valve a is provided with an enlarged end 38 as
shownin Fig. 2, which limits the movement of
the valve as it is inserted into proper position
whereby the various passageways will properly’
register. An accelerator or throttle lever 39 is
for mixing air with the vaporized gasoline and
any unvaporized gasoline from said vaporizing
chamber, said abutment being formed with a
passageway for each of said pipes, said passage
ways having respectively one end in free com
vmunication with said pipes and one end open
to said auxiliary air inlet.
2. In a carburetor, means forming a T-shaped
structure with one leg acting as an outlet, a sec
ond leg as an auxiliary air inlet, and the third
leg as a vaporizing chamber, a wall arranged be
tween said second and third legs in alignment
with the ?rst mentioned leg but spaced therefrom
so that the second and third legs are in con
15 secured to the protruding end of valve; 4 so as to .tinuous communication with the lower end of 15
hold the valve in proper place and also to rotate
the valve. This lever may be actuated through
link Ale and other mechanism as may be desired.
When the throttle vaive 3 is used it must be con
20 nected with the accelerator lever 39 in some man
ner so that it will be open as valve 4 opens.
However, usually valve 3 is eliminated. A set
screw éli acts to clamp lever 39 rigidly to the valve
d and also projects outwardly sufficiently far
25, to strike the pipe at and limit theopening move
ment of the lever so that the lever can not be
moved further than a full open position for
valve ll. An adjustable abutment is also pro
vided for lever 33. This consists of a screw 42
30 locked in place by a suitable lock 2, said screw
being threaded into the extension all of lever 39.
If desired,v the usual spring connected with
the ?rst mentioned leg, a plurality of pipes of
different lengths extending from said wall into
said ?rst mentioned leg, said wall having a pas
sageway for each of said pipes, said passageways
opening into said auxiliary air inlet, a ?oat 20
chamber adapted to receive gasoline, a plurality
of tubes extending from said ?oat chamber into
said vaporizing chamber, and means for directing
air across the upper end of each or" said tubes,
said means directing the air toward said vaporiz
ing chamber, and means for regulating the air
directed across said tubes.
3. In a carburetor, means forming a vaporiz
ing chamber, means forming an auxiliary air inlet
chamber, a- tubular outlet member appreciably 3,01
longer than said vaporizing chamber, said out
let member having substantially equal sized open
accelerators may be connected with lever 39, link
ings registering with the vaporizing chamber and
to, or any parts associated therewith, so that
the air inlet member, tubes of different lengths
35 when the link "ii? is released the spring will auto
extending into said outlet member centrally and
matically move lever 39 and associated parts in
longitudinally thereof, one end of each of said
a direction for'closing valve
In order to pre
vent a complete closing of the valve It so that the
tubes opening into said air inlet chamber where
by air is supplied to said outlet member at its
engine may idle, abutment S2 is adjusted and
inlet end and at spaced points along its length,
means for supplying gasoline to said vaporizing
chamber, and means for directing air under
pressure into said vaporizing chamber.
40, strikes the pipe 35% as shown in Fig. 5. This holds
valve fl suf?ciently open to allow idling at any
desired speed.
I claim:
1
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i. A carburetor comprising a float chamber,
45 means for directing gasoline into said chamber,
a valve for controlling the action of said means,
a float for controlling the action of said valve,
a plurality of outlet tubes extending from near
the bottom of said chamber to a point exteriorly
50 of said chamber, the ends of said tubesexteriorly
of said chamber being arranged in different
planes, means for directing air under pressure
across the tops of said ends for drawing gasoline
from said tubes and vaporizing the gasoline at
55 the same time, means forming a mixing chamber
for said gasoline and air, an outlet tubular mem
ber adapted to lead to the intake manifold of
an internal combustion engine, means forming
an auxiliary air inlet leading into said outlet
60 tubular member, a baiile between said vaporizing
chamber and said air inlet means, and a plu
rality of pipes of different lengths extending from
said abutment into said outlet tubular member
4.9
4. In a carburetor, tubular means formed with
a tubular outlet member substantially centrally
thereof, said outlet member extending substan
tially at right angle to said tubular means, a di
45,
vision member positioned substantially centrally
or" said tubular means, said division member ex
tending to near said outlet member for dividing
said tubular means into an air inlet chamber and 50
a vaporizing chamber, both of said chambers dis
charging into said outlet member above said
division member, a valve in said air inlet cham
ber for controlling the air passing therethrough,
a plurality of tubes extending into said vaporiz~ 55
ing chamber for directing carburetable fuel into
said vaporizing chamber, and means at the end
of said vaporizing chamber opposite said division
member for directing air under pressure across
the tops of said tubes for drawing fuel into said
vaporizing , chamber.
FRANK N. RUSSELL.
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