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Патент USA US2406517

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Aug. 27, 1946. Y
ì Filed May 1, 1945
#A 11m/5, MECH, Fos Tem; A/AF'fR/q
Patented Aug. 27, 1946
_ , >2,406,517
` Thomas L. T?pletanncinq, Calif.
Application May» 1-, 1943i, serial No. 4855399Á
10 Claims. (Cl-r 48-180),
My invention relates to- devices for vaporizing
and mixing fuel in preparationtfor combustion.
Whiler the invention may be applied' to the treat
ment' of various types of liquid' fuel for various
specific purposes, it is being initially embodied in a
device for use between `the carburetor and the
intake manifold of 'a automobile. For‘the purpose
of the present disclosure, I elect to describe this
initial embodiment in the knowledge vthatsuch a
inexpensive. and simple fuel vaporizing means
thatmaybe used on. an: automobile to substan
tially'increase the mileagek per gallon` derived' from
themotor fuel.
r I have discovered that; the problem of, using
suiiiciently fine screen for eiîiciency and the prob
lem of using a pluralty of` such screenszwithout
' seriously choking the fuel and air supply may
bel solved by supplying energy to the air stream
description will be adequate guidance for apply 10 fromf an outside.- source, and I have» furtherjdis'
ingr the invention wherever it may yhave utility.
covered that an arrangement. for adding kinetic
My invention* is characterized bythe'concept
energy to the fuel-laden air stream may be de
of forcing fuel-laden air through aß perforate
signed to- maintain engine> ‘efficiency regardless ‘ of
means such as a screen, thereby to achieve such
changing loadand changingenginel speed. I pre
turbulence, flow-velocity, channel restriction, and
mechanical action as to break up, vaporize, and
mix the fuel> for maximum combustion eñiciency.
I have discovered that the desired processing
of a fuel-laden air` stream may be accomplished
15 fer to, accomplish this by rotatingI an. air screw',
adaptedï to. force the fuel-laden air through. the
screens, by an independent power source, such
as anr electric motor. I have found it very desir- `
able, if notfessential, to’have the independent
by using relatively fine screen,„preferab1yr as> fine 20 power source rotate the. air screw at: a substan
as 130 mesh. I have further discovered»A that it ,
tially constant and relatively high rate of speed,
is' desirable toemploy a plurality of such screens
` regardless of thev normali velocity of fuel-laden
spaced apart for successive action on thev fuel'
laden air stream. Unfortunately, however, even
a single screen of relatively'fine- mesh `offers seri
ous resistance to air flow `and maysohind'er air
and fuel supply to the internal combustionvv engine
‘as to more than offset any< advantage gained by
improving the fuel mixture.
air passing from the carburetor to the engine. f
By suchy provision, Ilam able to obtainl complete
and satisfactory mixing at all engine speeds, `
which: has not been possible hitherto. This in
sures: ready- starting of the engine, even when
cold, and greatly increases overall efiìciency of
the fuel system at all`r speeds ofV operationof the
If an air screw is
employed to rotate the screen, the situation is 30 engine.
made worse by additionallyrobbing the airstream
Other objects. and advantages'of my invention g
of kinetic. energy;
I am aware that’ the use of’ screen means for
this purpose has been suggested heretofore. For
example, stationary screen means are foundV in
some> prior disclosures, while other disclosures
teach the use of air screws to derive'- kineticl en
ergy fromV the fuel-laden airy stream for continu
ous rotation of the screen means.
willi be apparent from the following description;
taken with the accompanying drawing:
In the: drawing,> which- is to be regarded as
merely illustrative,
Fig. 1 is aview partly in section and partly in
side elevation: of a. preferredy form of myY inven
Fig. 2 is a transverse section: taken as indicated
Within my knowledge, none of these prior art 40 by theline 2:--2 of Fig. 1;.
arrangements involving either stationary or ro
Fig'. 3 is a transverse section taken as indicated
tary screens has solved therproblem of employing
by the line 3--3`l0f F151.;
' '
suiiiciently fine mesh screen for efficient fuel
Fig. 4 is av fragmentary section taken on. adi
treatment without reducing the rate of ` airv flow
ameter throughf` one> of the impellers in Fig` 1;
to` a intolerable degree. Thel various prior art
arrangements, furthermore, vary widely inv effl
Fig; 5 is- asimilar fragmentary sectional view
cien'cy under varying> engine loads and varying
indicating a construction of a modified form of
engine speeds'.
It is` an object of' my invention to provide for
employing ñne mesh screensv in any desired num
ber in an intake passageA of' a combustion engine
without the usual penalties heretoforel encoun
tered, and to do s0 withoutwide fluctuations. in
eiiìciencyfunder varying operating conditions. A
further object of my invention. isA tot provide an
the invention.
The preferred >form of my invention shown >in
Figs'. 1l’ to 4‘ includes-1 a: cylindrical passage means
generally designated t!) having allateralv elbow Iv I,
the passage'- means and elbow constituting >that
part: of: the- down-draiêt 'intake passage of anxin->
termal. combustion. engine between acarburetor>
t2' off-thesengine and an intake manifold~ I3. For
screen assemblies. The rotation of the screens in
creases the turbulence of the fuel-laden air and
communication with the manifold I3 I provide a
special fitting I5 having a bottom ñange I6 to
match the top flange I1 of the manifold I3. In
a well knownmanner these two ñanges with an
in addition causes the wires of the screens to
move laterally into impingement with fuel drop
lets. The fuel reaches the intake manifold I3
intervening gasket I8 may be joined by suitable
thoroughly vaporized and thoroughly intermixed
’ bolts 26. The fitting I5 vprovides an annular seat
with the accompanying air. The degree to which
2| to receive the lower cylindrical end of the
passage means .Ill and is joined to the passage
meansby suitable screws 22 vextending through
a gasket 23. As' indicated in Figs. 1 and 3,` the
the impellers impart energy to the fuel-laden air '
stream is at least suificientto substantially com
fitting I5 provides a transverse web 25 having a
pensate for- the resistance? to fluid ñowfimposed
bythe various screen assemblies 46. In practice,
itis found that the degree to which the impellers
suñ'icient number of relatively large apertures „
26 to permit ready air flow from the cylindrical ' f exert a boosting effect on the air stream is'not '
critical, _variation in the design and efficiency of
the impellers being possible without sacrificing
passage means I6 into the manifold I3.~í->
The cylindrical upper end of the passage.'
the lmaterial advantages inherent in the inven
tion. Injone test the device, substantially as
means I0 may be closed by a p1ate‘2'I and‘a'suita'»,
able gasket 28, the plate and; gasket being;` held A
shown inFig. 1, increased by yLll% the efficiency
in place by suitable screws 30.
Mounted on the upper side of the vplate -”21'is a Y
motor 3l which may be held in place by suitable
means suchv as a band 32«having its spaced ends
of- anautomobile engine measured in miles per
The' purpose of Fig. 5 isjto indicate how the
described arrangement'may be modified to use
anchored by .two of the screwsY 36 as indicated in
stationary screen assemblies instead of'rotary
screen assemblies. In the arrangement shown in
Figli'. AThe motor 3I may be energized through
v a cable 33 bythe battery employed ‘inthe ignition
systemV for the engine and may be controlled by 25 Fig. 5, impellers generally designated 5'I of the
same' construction as the impellers 45 are' mount
an> ignition‘switch 35: so .that when the ignition
edxin the same manner on a motor-.driven axial
switch is turned on, the motor 3| isvenergized.
shaft 58: Fig. 5 shows a setscrew 66 extending
In the preferred form of my invention, Imount
through the-hub 'portion 6i of one Vof the impel-=`
a -shaft'36 inside the .cylindrical passage means
Ißïaxially'thereof for power rotation by the mo 30 1ers.;A Each lofthe screen vassemblies v employed y in
this ¿modified form ofr the invention mayibe‘held
tor 3|".r Y:Fign'l showsa vreduced lower end'31 of
in a stationary"manner> by suitable means engag
the shaft- 36 journaled in a suitable anti-friction
ing peripheral portions' of the `assembly.`_ Thus,
bearing 38 that is mounted in the transverse web
in Fig. 5 a screen assembly 62 comprisingl three
255an`d.also shows the upper end'of the shaft
formedvwith a socket 40 to receive the end of a 35 layers ¿of screen, as heretofore described, is ípe- l
ripherally engaged‘between two sleeves 63 that
, smaller shaft 4I extending downwardly from the
line ythe interior of the passage means"l0.ï The
motor 3|; ’The two shafts may be keyed together
by 'aÍsuitable cross pin 42'. The'motorV shaft 4I
screen assembly 62 in Fig.f5 is centrally aper- . y
tured to clear the rotating shaft 58, the screen
isijournaled in ‘af suitable .anti-friétion bearing
43 -carried by> the top'plate 21.;
'- In variouspractices -of my invention,A various
screens in` varying number may be placed in the
passage means I6, and various impellers'in vary
of'v the --invention operates in substantially, the
ing number may be mounted on the shaft 36.y In
~f vIn the
as the
of my
invention, is contenir
theiillustrated preferred arrangement, both îthe
screens and the impellers are carried by the shaft
assemblyv includingfa suitable flanged ring 65 to
line the' aperture andghold» the three layers of
the screen assembly together. This second form
platedy that lthe design of lthe impellers 'and'fof
the associated motor forf'useV Awith an internal
combustion engine will be such that the motor
1 shows three impellers or blowers 45 -
and shows screen'assemblies 46 mounted on the
3I will contribute energy'to the fuel-laden air
opposite ends of each Yof the impellers.
Each impellei' 45 has Aa hub portion 4'I'keyed 50 stream when the air stream tends’to flow at low
velocity due 'to idling of the engine or otherwise,
` to’theshaftA 36 by a suitable setscrew 48 and has
and, on the other hand, when the engine causes
anulnber‘òf blades 50 preferably of small helical
the »fuel-'laden air .stream to flow at 4relatively
high velocity,the air stream will-drive the motor
fEach'screen assembly 46 `comprises a fine mesh
screen 5I reinforced on one side byan upper, re1
55 as a generator t0 contribute to Vcharging of the
battery. `-'Thus, even with the enginev idling,>my n
ative'ly coarse Jscreen >52- and reinforced on the
other sideby a lower, relatively coarse screen 53.
If the impellers are made of relatively soft ma
teriaLÍsuch as aluminum, the three layers com
prising each of the screen' assemblies 46 may be 60
anchored by suitably hardened pins 55 driven in
to suitable bores 56 in theassoc‘iated impeller.
In ythe initial embodiment of my invention, the
metal screen 5IV is preferably 130 mesh per inch,
while the two reinforcing screens 52 and 53 are
cut ' from ordinary copper or brass -window
Y screen.4` The Vtwo screens4 52 yand 53 _are notre
lied upon for any function other than lreinforce
ment of the fine mesh screen 5I.
device .provides 'a complete mixing of the fuel
and‘ air stream'to insure more -efficient combus
tion. Furthermore,> dueto such complete mix
ing, my invention permits ready starting fof `an
automobile ‘engine when-the sameis cold with
out f Supplementary 'enriching of the mixture>
through the use ofthechoke.
Although the preferred embodiment of `:my in
vention as -ill'ustrate’dïand previously described
herein‘is'» adapted for vuse with a down-draft
carburetor'of the standard lautomobiletypa-'I
do not intend _to be limited thereto.l ForY ex
ample,V VI' have discovered» byY interchanging -the
70 down-draftcarburetor I2 for an up-draftfcar
buretor, of Yany standard ._type, and attaching it
vention may be readily understood from the
to thevñtting I5 inthe place ofthe manifold' I3;
foregoing description. The three rotating im
and by attaching the manifoldto theelbow II
pellers 45 force the fuel-laden air delivered from
in the place of the carburetor I2, andxby revers- .
the carburetor I 2 and the elbow II through the
exceedingly 'ñne openings I of the -successive 75 ing the direction of rotation of the motor 3 I ,that ,
The operation of the preferred ‘form/of my in
results can be obtained which are fully com
parable to those attained by the use of the down
draft carburetor i2 in the manner illustrated in
the drawing. It will therefore be appreciated
that my invention is equally applicable to either
up-draft or down-draft carburetion.
The preferred practice of my invention de
scribed in specific detail will suggest to those
skilled in the art various changes and substitu
tions under my basic concept, and I reserve the
right to all such departures from my disclosure
that properly lie within the scope of my appended
air stream in the intake passage leading to an in
ternal combustion engine, comprising in com
bination: passage means; a closure for one end
of said passage means; a .motor carried by said
closure; a drive shaft cormected with said motor
and extending through said closure and axially
into said passage means; a plurality of spaced
screen assemblies disposed about said drive shaft;
a plurality of impellers on said shaft and dis
posed in alternatingrelation between said screen
assemblies; a lateral connection to said passage
means adjacent its end carrying said motor; and
means providing for air passage at the opposite
¿end of said passage means, said motor being
adapted to be driven at a' relatively high rate of
Speed independently of the speed of said internal
I claim as my invention:
l. Means for vaporizing f?el entrained in the
air stream in an intake passage leading to an
internal combustion engine, comprising in com
bination: passage means providing said intake
passage; a plurality of spaced impellers disposed
combustion engine.
transversely across said passage each impeller _
6. A combination according to claim 5 Where
in mountings for said impeller shaft are provided
whereby relatively higher engine speed will cause
having ya plurality of blades; a plurality of spaced
said motor to serve as a generator by reason of
screen assemblies transversely disposed between
consequent relatively higher air trave1 through
said impellers and supported upon edges of said
said passage means.
blades for rotation therewith; a drive shaft car
7. A combination according to claim 5 Where
rying said impellers, said drive shaft extending 25 in certain of said screen assemblies include screen
exteriorally of said passage; and a motor carried
the mesh of which is in the order of 130 mesh
by said passage means and connected with the
per inch.
extending portion of said drive shaft for driv
8. A combination according to claim 5 where
ing said impellers independently of operation of
said engine.
2. Means for vaporizing fuel entrained in the
air stream in an intake passage leading to an
internal combustion engine, comprising in com
bination: passage means providing said intake
in a screen assembly is secured to each side of
30 each impeller.
9. A combination according to claim 2 where
in a screen assembly is carried by each impeller
andeach screen assembly comprises a fine fuel
dispersing screen and a coarse reinforcing screen
passage; a, plurality of spaced bladed impellers 35 secured in contact therewith.
disposed transversely across said passage; a plu
rality of spaced screen assemblies alternating be
tween said impellers and disposed perpendic
10. Means for vaporizing fuel entrained in the
air stream in an intake passage leading to an
internal combustion engine, comprising in com
ularly to the axis of said passage, each screen
bination: passage means providing said intake
assembly comprising a fine fuel-dispersing screen 40 passage; a plurality of spaced impellers disposed
and a relatively coarse screen reinforcing said
transversely across said passage, each impeller
fine screen; a drive shaft carrying said impellers;
having a plurality of blades; a plurality of spaced
and a motor connected with said drive shaft for
screens carried upon and supported by said im
driving said impellers.
peller blades in positions substantially perpendic
3. A combination according to claim 2 Where- , ,is :lular
to the axis of said passage; and a drive shaft
in relatively coarse reinforcing screens engagev
connected with said impellers and extending ex
the opposite sides of each ñne screen.
teriorly of said passage, said shaft having rmeans
4. A combination according to claim 2 Where
for driving connection with motor means to oper
in said impellers have hubs and said screen as
ate said impellers and screens.
semblies are respectively secured to said hubs.
5. Means for vaporizing fuel entrained in the
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