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Патент USA US3034539

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May 15, 1962
3,034,529
M. J. KlTTLER
FLOAT HINGE_ADAPTER
Filed NOV. 3, 1958
I
I
INVENTOR.
Maw/v <1 /f/rrc 6/?
U?iid States Patent 0 Nice
3,934,529
Patented May 15, 1962
2
1
Fuel from an external source such for example as a
3,034,529
FLQAT HINGE ADAPTER
Milton 3. Kittler, Bloom?eld Hills, 'Mich., assignor to
Holley Carburetor ?ornpany, Van Dyke, Mich., a cor
poration of Michigan
Filed Nov. 3, 1958, Ser. No. 771,498
15 Claims. (Cl. 137-315)
The present invention relates to a ?oat hinge adapter,
fuel pump 16, is supplied through a ?tting 18 to a cham
ber 20and ‘thence through a passage 22 to-the interior of
the bowl 12. The flow of fuel through the passage 22 is
controlled by a fuel inlet valve member 24 having a
tapered valving portion movable vertically in a valve
housing 26 toward and away from a Valve seat indicated
at 23 therein. Fuel passing the valve seat enters the
interior of the bowl through ports 3%).
and more generally to the combination with a carburetor 10
The fuel in the bowl 12 is maintained at a constant
fuel bowl of a valve actuating ?oat arm and mounting
level by a valve actuating ?oat arm 32 engageable with
an extension 33 of the valve member 24, the arm 32
means therefor.
It is an object of the present invention to provide an
having at its outer end a ?oat 34. Associated with the
adapter mounted on pivot means normally provided for
?oat 34 is a compression spring 36 urging the ?oat up
receiving the free end of a valve actuating ?oat arm, the 15 wardly in valve closing direction.
adapter having pivot mounting means thereon located
The free end ‘of the valve actuating ?oat arm 32 is
more closely adjacent to the fuel inlet valve for mounting
‘pivotally connected to an adapter indicated generally at
the end of the valve actuating ?oat arm so as to increase
38, details of which are best seen in FIGURES 2 and 3.
the leverage applied thereby.
The adapter comprises an elongated body portion 40
More speci?cally, it is an object of the present inven 20 formed of sheet metal having at'opposite sides thereof up
tion to provide an adapter in position between an inlet
valve housing and an adjacent wall of a fuel bowl, abut
ment and wedging means on said adapter engageable with
with a ?rst pair of pin receiving openings 46 adapted to
receive a mounting pin 56 extending inwardly from the
turned ears 42 and 44.
The ears 42 and 44 are provided
confronting surfaces of said housing and wall, and pivot
side wall of the bowl 12.
mounting means on said adapter to support the free end
vided with a second pair of aligned openings 52 adapted
of a valve actuated ?oat arm.
to receive a pivot pin 54 which extends through an eye '56
formed at the free end of the ?oat arm 32. The elongated
body 40 at one end is provided with a rigid abutment 58
engageable with one side of the valve'housing 26. At its
Still more speci?cally, it is an object of the present
invention to provide an adapter having a pair of cars
The cars 42 and 44 are pro
thereon provided with a ?rst pair of registering openings
for mounting the adapter on a pin projecting inwardly 30 other end the elongated body 40 is bent upwardly to
from one wall of a carburetor fuel bowl, said ears having
a second pair of aligned openings adapted to receive a
mounting pin for pivotally supporting the free end of a
provide a resilient ear 60 engageable with the inner sur
face of the end wall 62 of the bowl.
Inasmuch as ‘the adapter 38 is mounted on a pivot pin
valve actuating ?oat arm, a rigid abutment on said adapter
50, it would be rotatable about such pin except for the
engageable with a side of the valve housing, and resilient 35 presence of the ‘abutment portion '53 thereof.
Referring now to FIGURE 2 it will be observed that
means on the adapter engageable with the adjacent inner
upward force applied to the ?oat either by buoyancy
surface of the bowl wall to wedge the adapter in located
or by the action of the compression spring 36 tends to
rock the ?oat arm 32 counterclockwise about the end of
It is a further object of the present invention to pro
"fvide an adapter as described in the preceding paragraph 40 the valve extension 33, thus applying a downward force
to the pivot pin 54. This in turn applies a clockwise
in which the adapter comprises an elongated sheet metal
torque to the adapter 38 and tends to maintain the abut
body in which the ears are bent up from opposite sides
ment 5% in locating engagement against the adjacent side
thereof and in which the resilient means comprises a bent
position with reference to the valve housing.
i;
end portion of said elongated body.
of the valve housing "26. To insure that the adapter is
Other objects and features of the invention will become 45 properly maintained in this desired relationship, the resil
ient ear 6%} of the adapter body 4%) is in wedging relation
apparent as the description proceeds, especially when
taken in conjunction with the accompanying drawing,
against the inner surface of the end wall 62.
The pivot mounting pin 59, on which the adapter 3%
illustrating a preferred embodiment of the invention,
is carried, has in prior constructions served as the pivot
wherein:
50
mounting for the free end of the ?oat arm 32. By em
FIGURE 1 is a side elevational view of a carburetor
ploying the present construction it will be observed that
with the fuel bowl in section.
the leverage exerted by the ?oat 34 is substantially in
FEGURE 2 is an enlarged detailed view of the adapter
and associated mechanism with parts broken away.
creased, thus permitting the ?oat,lwith the assistance of
FIGURE 3 is an exploded view of the elements making 55 the compression spring 36, to effectively maintain the
up the adapter assembly.
valve element 24 in closed relation on its valve seat
In FIGURE 1 there is shown the side elevational view
against the ?uid pressure developed by the fuel pump
of a carburetor comprising a main body it} to which a
fuel bowl 12 is attached. The fuel bowl is an elongated
body having an outer Wall, top, bottom, and end walls 60
and being open on its inner side.
it is attached to the
side of a metering body (not shown) and the metering
body and bowl are attached to the main body by suitable
fastening means such for example as screws passing
through openings 14 so as to clamp the open sided bowl
member 12 against the main body and thus to provide a
completely enclosed bowl.
'
_
The metering body is provided with suitable openings
(not shown) providing for the passage of fuel to the main
nozzle, idling and transfer ports, etc. The present inven
tion is concerned only with the construction which main
tains the proper i€V€1 of fuel in the fuel bowl.
16 as increased, as sometimes occurs, by vapor pressure
attributable to volatility of modern fuels.
The drawing and the foregoing speci?cation constitute
a description of the improved ?oat hinge adapter in such
full, clear, concise and exact terms as to enable any
person skilled in the art to practice the invention, the
scope of which is indicated by the appended claims.
What I claim as my invention is:
l. Carburetor fuel bowl valve and ?oat construction
comprising a fuel bowl having an inlet valve housing
disposed in spaced relation to one wall thereof, a valve
element movable in said housing, a valve actuating ?oat
having an arm provided with pivot means at its end, and
pivot mounting means for said arm comprising an adapter
disposed between confronting surfaces of said valve hous
3,034,529
4
3
to urge said abutment into locating engagement with said
ing and the adjacent wall portion of said bowl, said
adapter being mounted in said fuel bowl independently
one surface.
8. A valve actuating ?oat adapter mounting compris
ing a body having laterally spaced parallel ears, said
of said housing, a pivot connection between said adapter
and said arm, and a locating abutment on said adapter
engaging one of said surfaces.
2. ‘Carburetor fuel bowl valve and ?oat construction
comprising a fuel bowl having an inlet valve housing
disposed in spaced relation to one wall thereof, a Valve
to provide ?rst pivot means for mounting said adapter
between a pair of confronting surfaces, and a second pair
element movable in said housing, a valve actuating ?oat
mounting means for connection to the end of a valve
ears having a ?rst pair of aligned pin receiving openings
of aligned pin receiving openings to provide second pivot
actuating ?oat arm, said body having a rigid abutment
having an arm provided with pivot means at its end, and
pivot mounting means for said arm comprising an adapter
thereon engageable with one of said surfaces and a resil
ient wedging ear engageable with the other of said sur
pivotally mounted between confronting surfaces of said
valve housing and the adjacent wall portion of said bowl,
said adapter being mounted in said fuel bowl independ
faces to urge said abutment into locating engagement
with said one surface.
ently of said housing, a pivot connection between said 15
adapter and said arm, and a locating abutment on said
9. A valve actuating ?oat adapter mounting compris
ing an elongated sheet metal body having laterally spaced
parallel ears turned up from opposite-edges thereof, said
adapter engaging one of said surfaces.
ears having a ?rst pair of aligned pin receiving openings
3. Carburetor fuel bowl valve and ?oat construction
to provide ?rst pivot means for mounting said adapter
comprising a fuel bowl having an inlet valve housing
disposed in spaced relation to one wall thereof, a valve 20 between a pair of confronting surfaces, and a second
element movable in said housing, a valve actuating ?oat
having an arm provided with pivot means at its end, and
pivot mounting means for said arm comprising an adapter
pivotally mounted between confronting surfaces of said
valve housing and the adjacent wall portion of said bowl,
a pivot connection between said adapter and said arm,
.a locating abutment on said adapter engaging one of said
surfaces, and resilient wedging means on said adapter
pair of aligned pin receiving openings to provide second
pivot mounting means for connection to the end of a
valve actuating ?oat arm, said body having one end
shaped to form a rigid abutment thereon engageable with
one of said surfaces and its other end bent to form a
resilient wedging ear engageable with the other of said
surfaces to urge said abutment into locating engagement
with said one surface.
10. An adapter for increasing the leverage of a float
engaging the other of said surfaces.
4. Carburetor fuel bowl ?oat and valve construction 30 actuated valve control arm having pivot means at one
end and a ?oat at the other end, said arm being adapted
comprising an elongated bowl having side and end walls,
an inlet valve housing in said bowl spaced from an end
to be mounted on a pivot pin located in a fuel bowl
generally between an inlet valve housing and an adja
wall thereof, a valve element movable in said housing,
cent wall portion of the bowl and normally constituting
a valve actuating ?oat having an arm provided with pivot
means at its end, an adapter disposed between confront 35 a pivot mounting for an end of the ?oat actuated arm,
said adapter comprising pin receiving portions for mount
ing surfaces of said end wall and said valve housing,
ing said adapter on said pin for pivotal movement
an abutment on said adapter engaging one of said sur
thereon, pivot means on said adapter located between said
faces, resilient wedging means on said adapter engaging
pin receiving portions and the valve housing for pivot
the other of said surfaces, and a pivot connection be
tween said adapter and the end of said arm.
ally supporting said arm, and abutment means on said
adapter engageable with the valve housing when said
5. Carburetor fuel bowl ?oat and valve construction
adapter is swung about the pivot pin in the direction occa
comprising an elongated bowl having side and end walls,
an inlet valve housing in said bowl spaced from an end
sioned by ?oat applied force on said arm.
11. An adapter for increasing the leverage of a ?oat
wall thereof, a valve element movable in said housing,
a valve actuating ?oat having an arm provided with pivot 45 actuated valve control arm having pivot means at one
means at its end, an adapter disposed between confront
ing surfaces of said end wall and said valve housing,
pivot mounting means extending from a side wall of said
bowl on which said adapter is mounted, an abutment on
end and a ?oat at the other end, said arm being adapted
to be mounted on a pivot pin located in a fuel bowl
generally between an inlet valve housing and an adja
cent wall portion of the bowl and normally constituting
said adapter engaging one of said surfaces, resilient wedg 50 a pivot mounting for an end of the ?oat actuated arm,
ing means on said adapter engaging the other of said
surfaces, and a pivot connection between said adapter
and the end of said arm.
6. A valve actuating ?oat adapter mounting compris
ing a body having laterally spaced parallel ears, said
ears having ?rst pivot means for mounting said adapter
between a pair of confronting surfaces, and second pivot
mounting means for connection to the end of a valve
said adapter comprising pin receiving portions for mount
ing said adapter on said pin for pivotal movement
thereon, pivot means on said adapter located between said
pin receiving portions and the valve housing for pivotally
55 supporting said arm, abutment means on said adapter
engageable with the valve housing when said adapter is
swung about the pivot pin in the direction occasioned
by ?oat applied ‘force on said arm, and resilient means
on said adapter engageable with the wall of the bowl
actuating ?oat arm, said body having a rigid abutment 60 adjacent the valve housing.
thereon engageable with one of said surfaces and a resil
ient wedging ear engageable with the other of said sur
/
12. A carburetor fuel bowl assembly comprising a
bowl having an inlet valve housing spaced inwardly from
‘a ?rst side wall thereof, a ?rst pivot pin extending in
wardly from a second side wall adjacent said ?rst side
with said one surface.
7. A valve actuating ?oat’ adapter mounting compris 65 wall and intended to provide a pivot mounting for the
free end of a valve actuating ?oat arm, an adapter pivot-t
ing an elongated sheet metal body having laterally spaced
ally mounted on said pin and located generally between
parallel ears turned up from opposite edges thereof, said
said valve housing and said ?rst wall, a second pivot
ears having ?rst pivot means for ‘mounting said adapter
on said adapter located between said ?rst pivot pin
between a pair of confronting surfaces, and second pivot 70 pin
and said valve housing, a valve actuating ?oat arm piv
mounting means for connection to the end of a valve
otally mounted on said second pin, and an abutment on
actuating ?oat arm, said body having one end shaped
said
adapter engageable with said valve housing to locate
to form a rigid abutment thereon engageable with one
said adapter properly with respect thereto.
of said surfaces and its other end bent to form a resilient
13. A carburetor fuel bowl assembly comprising a
wedging ear engageable with the other of said surfaces 75 bowl having an inlet valve housing spaced inwardly from
faces to urge said abutment into locating engagement
v
Tl
3,034,529
5
6
a ?rst side wall thereof, a ?rst pivot pin extending in
wardly from a second side wall adjacent said ?rst side
wall and intended to provide a pivot mounting for the
free end of a valve actuating ?oat arm, an adapter piv
otally mounted on said pin and located generally between
said valve housing and said ?rst wall, a second pivot
pin on said adapter located between said ?rst pivot pin
and said valve housing, a valve actuating ?oat arm piv
comprising an elongated fuel bowl having side and end
Walls, an inlet valve housing disposed in said fuel bowl
spaced from an end wall thereof, a valve element mova
ble in said housing, a ?oat arm for controlling said valve
element, a pivot pin normally provided for receiving an
end of the ?oat arm and extending from a side wall of
said fuel bowl between said inlet valve housing and said
end wall on one side of said valve element, an adapter
mounted on said pivot pin for increasing the leverage of
adapter engageable with said valve housing to locate said 10 the aforesaid ?oat arm, a fulcrum on said adapter be
tween said pivot pin and said inlet valve housing, said
adapter properly with respect thereto, and resilient means
otally mounted on said second pin, an abutment on said
?oat arm being pivotally connected on one end to said
on said adapter engaging said ?rst wall and effective to
fulcrum, a ?oat connected to the other end of said ?oat
maintain said abutment in locating engagement with said
arm on the other side of said valve element, a locating
valve housing.
14. ‘Carburetor fuel bowl valve and ?oat construction 15 abutment on said adapter engageable with said valve
housing when said adapter is swung about the pivot pin
comprising an elongated fuel bowl having side and end
in the direction occasioned by the ?oat applied force on
walls, an inlet valve housing disposed in said fuel bowl
spaced from an end wall thereof, a valve element mov
able in said housing, a ?oat arm ‘for controlling said valve
said ?oat arm, and resilient means on said adapter en
gageable with said one wall of the fuel bowl.
element, a pivot pin normally provided for receiving an 20
end of the ?oat arm and extending from a side wall of
References Cited in the ?le of this patent
said fuel bowl between said inlet valve housing and said
UNITED STATES PATENTS
end wall on one side of said valve element, an adapter
mounted on said pivot pin for increasing the leverage of
the aforesaid ?oat arm, a fulcrum on said adapter be
25
tween said pivot pin and said inlet valve housing, said
?oat arm being pivotally connected on one end to said
fulcrum, a ?oat connected to the other ‘end of said ?oat
arm on the other side of said valve element, and a locating 30
abutment on said adapter engageable with said valve hous
756,538
1,463,907
1,874,443
Smith ________________ __ Apr. 5, 1904
Olson ________________ __ Aug. 7, 1923
Carter ______________ __ Aug. 30, 1932
2,066,523
Ewart ________________ __ Jan. 5, 1937
2,376,623
2,521,794
Romberg _____________ __ May 22, 1945
Harvey et al __________ __ Sept. 12, 1950
Bimberg _____________ __ Feb. 22, 1955
2,702,562
ing when said adapter is swung about the pivot pin in
the direction occasioned by the ?oat applied force on
said ?oat arm.
15. Carburetor fuel bowl valve and ?oat construction 35
FOREIGN PATENTS
139,631
118,112
Great Britain _________ __ Mar. 11, 1920
Australia _____________ __ Feb. 8, 1944
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