US2492123A

US2492123A - Float bowl assembly

Info

Publication number: US2492123A
Authority: US
Inventors: Williams Judson
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-12-17
Filing date: 1947-12-17
Publication date: 1949-12-20
Anticipated expiration: 1966-12-20

Description

5 A 5. A m p J WILLIAMS FLOAT BOWL ASSEMBLY Filed Dec. 1'7, 1947 Dec. 20, 1949 UNITED STATES PATENT OFFICE FLOAT BOWL ASSEMBLY Judson Williams, Ben Salem, Pa.

1947, Serial No. 792,1

1 Claim. 1

This invention relates to an improved float bowl assembly as employed in connection with my improved motor-generator unit disclosed in my prior application filed July 10, 1945, Serial No. 604,238, the present application being a substitute 1011' my prior application filed August 30, 1945, Se-

rial No. 613,459.

A portable motor-generator unit of the character disclosed in my prior application for said invention and adapted to be carried on the back of a person on foot, as for instance, in the armed tones for use in the field, is unavoidably sublooted to much rough handling, vibration and shock, and it accordingly becomes necessary to provide in conjunction with the engine carburetor of the unit, a float bowl assembly which will tunetlonemcientlyunder conditions of abuse.

An object of the present invention, therefore, is to provide a float bowl assembly which, notwithstanding jar, shock, and vibration thereon, will not leak iuel therethrough.

Another object or the invention is to provide a float bowl assembly wherein the seal of the valve when closed will be protected, primarily, by companion cushioning means suspending the bowl to float therebetween, and, secondarily, by the resiliency of the material of the valve itself, the two being adapted to cooperate and maintain the seal M the valve under the most unfavorable conditions or operation of the assembly.

provide an assembly which may be readily taken apart and cleaned.

Other and incidental objects of the invention will appear during the course of the following description, and in the drawings:

Figure 1 is a front elevation of my improved assembly showing the device full size.

Figure 2 is a perspective view showing the parts separated but in proper relative position.

Figure 3 is an enlarged vertical section on the line 3-3 or Figure 1.

In carrying the invention into effect, I employ a substantially U-shaped holder l which is preferably of resilient sheet metal and is provided with parallel spring arms I i in which are formed aligned openings l2. It so desired, the metal of the arms may, as best seen in Figure 2, be cut away to deflne arcuate jaws I3.

Removably supported by the holder I0 is a cy- Substituted for application Serial No. 613,459, Au-

gust 30, 1945. This application December 17,

with a base Hi from which extends an axial nipple l6. Externally, the base 15 is provided with an annular shoulder l I below which is a shoulder [8, while, internally, the base is formed with a cylindrical valve chamber l9 having a conical upper end wall which forms a valve seat 20. Leading from the upper smaller end of said seat is a passage 2| connecting the valve chamber with the interior of the bowl.

At one side thereof, the base I5 is provided with a boss 22 in which is formed a fuel inlet passage 23 entering the valve chamber I9, and formed through said boss to communicate with the interior of the bowl is a fuel outlet passage 24. Fixed in the outer end of the passage 23 is a short tube 25 over which is slipped a conventional flexible hose connected, as shown in my prior application for motor-generator unit mentioned, with a fuel tank for supplying liquid fuel to the bowl I4, and fixed in the outer end of the passage 24 is a short tube 26 over which is slipped a conventional flexible hose leading, as also shown in said lprior application for motor-generator unit, to a carbureter fuel nozzle for supplying liquid fuel thereto from the bowl.

Closing the bowl [4 at its upper end is a detachable cover plate 21 through which is fixed an axial bushing 28, :and clamped between the bushing and said plate is a spring cup 29. Closing the valve chamber I9 is a removable plug 30 screwed into the lower end of the nipple I6.

Slidable through the passage 2| at the bottom of the bowl l4 and through the bushing 28 is a valve stem 3| which is provided at its lower end with a head 32 and is protected at its upper end by a removable cap 33 frictionally fitting over said bushing. Snugly fitting the stem is a cylindrical valve 34 which rests against the head 32 and is preferably 01' rubber. The upper end of the valve is thus disposed to engage at its outer periphery with the valve seat 20, and since said seat is tapered, the valve will have only edge contact with the seat. Dirt and grit will thus be prevented from lodging or collecting between the valve and seat to cause leakage while the resiliency of the valve will tend to maintain a seal between the valve and seat when the valve is closed. Furthermore, as will be noted, the valve is fiat and square at both ends thereof, Thus, should one end of the valve become worn, the valve may be removed and reversed end for end.

Formed in the valve stem 3| are spaced annular grooves 35, and detachably mounted on the stem to lie between said grooves is a. float 36. In the lindrlcal .iuel bowl I provided at its lower end present instance, I have shown a float of cork.

3 Removably engaged in the grooves 35 are stop collars 37 seated against the ends of the float and limiting the float against endwise movement on the stem so that, as will be understood, the float Will respond to the rise of fuel in the bowl [4 to close the valve 34 and thereafter maintain said valve closed until fuel is used from the bowl. It

is to be noted that the; passageli at the bottomof the bowl is of a size to permit the flow of fuel from the valve chamber l9 upwardly around the valve stem 3| into the bowl. Also, it is to be noted that after the cover plate 21 has been removed, the uppermost of the collars 31 may be displaced, when the float 36 may be Withdrawn from the valve stem. The lowermostof saidv collars may then be removed when, after displacing the plug,

30, the valve stem 3| and valve 34 may be with drawn. V

Removably engaged with the arms H of the holder it are like cup rings which, for convenience, are. indicated at, 3,8: and .39, respectively. These, rings are, preferablyprovided; with. sloping inner; walls,.. and formed: on said rings are annular flanges; 4-0: snugly fitting; in the: openings I 2 of: said arms, Interposedbetweenthe ring 33 and i the. shoulder ll of thebase; 15 at the lower end of the bowi I l-is, acushioning, spring 4! fittingv atzits; upper end about the. shoulder I 8 of said base, and interposed between thering. 39 and the oupZiLis axlike cushioning-spring 4'2 fitting at its lower end; in said cup. The lower end of, the springzfilifits Within theiring 38 while the, upper. end of 'thespring;42:fits.within the ring 3.9. Thus; the springswiliiyieldably hold theboiwl. I 4, against displacement. in. any direction, and will also; yield.- a'oly sustain the.- bowl; to; float. therebetween. These,- springs' will. accioitdinglvprovide a primary cushioning means tendin to relieve: shock and;

vibration and maintain the seal of the valve 34 with the seat 20, while the resiliency of the material of the valve will provide a secondary cushioning means cooperating with said springs to also promote the seat of the valve when closed.

Having thus described my invention, what I claim is: p I A float bowl assembly including; a. holder having-spaced arms provided with openings therein, cup rings having flanges engaged in said openings, a fuel bowl provided at one end with a base having; a shoulder thereon and at its opposite end with a cover plate having a spring cup thereon, said bowl being formed with an inlet and an 1 outlet, a float within the bowl having a valve connectedthereto for controlling flow through said inlet and outlet, and cushioning springs engaged at corresponding ends thereof with said rings and atopposite corresponding ends thereof one with said base to surround said shoulder and the other with said spring cup, said springs connecting the bowl with said holder and. sustaining the bowlto float.betweemsai-d spaced arms; 7 v

JUSON WILLIAMS;

eni ERfiNoE's erriain The following references are of record inthe file of this patent:

UNI'EED seems: eii isnfi'rs