US1620065A - Pumping mechanism - Google Patents

Description

F W ,1. Manila (2399 PUMPING MECHANISM 1 Original Filed July 28, 1922 Sheets-Sheet 1 I D W. J INVENTORS I @451 I. BRQCHWAY CHLQFTER H. BRASELTUN wp W I A TTORNEY EQi TFO 4 M Q. H EFMfiELLTQN ET AL PUMPING MECHANISM Original Filed July, 1922 2 Sheets-5heet 2 E l v N w n MN Patented Mar. 8, 1927.

' UNITED "STATES.

PATENT OFFICE.

onnsrnn H. BRASELTON, or New YORK, n; Y., Ann onnn r. BROCKWAY, or TOLEDO, OHIO; SAID :enooxwnv nssrenon T sun) nansnmou.

' PUMPING MECHANISM.

' Application filed July 28, 1922, Serial No. 578,064. Renewed May 10, 1926.

The present invention relates to a liquid feeding system wherein a liquid such as fuel is pumped from a supply tank to an auxiliary reservoir to be distributed therefrom toa consuming means such as the charge forming device for a power plant of a motor 'vehicle and is intended to constitute anim-z provide a simple, compact arrangement of pumping mechanism associated with said auxiliary tank, so constructed as to greatly facilitate the production thereof and the reduction of the cost by reason of the arrangement and correlation of the elements thereof.

A further object of the present invention is to construct avunitary valve assembly in a pumping mechanismarranged to force liquid from a supply tank to an auxiliary tank or to a liquid consuming means.

A further object of the present invention is a novel arrangement of the location of a compact valve cage assembly with respect to an inertia operated pumping mechanism which may be employed as a source of energy for effecting a forcing of the liquid in the system, the invention having particular utility with such an inertia operated pumping mechanism for feeding gasoline from a supply tank located at a lower level on an automotive vehicle chassis than the charge forming device for the ower plant A further object of t e present invention relates to a novel assembly and amounting of the relative parts such as the valve assembly, the inertia mass, and the equilibrium maintaining means such as a spring, if employed, to thereby reduce the cost of manufacture of such a type of device and to insure an uninterrupted and continuous operation under all conditions of use.

A further object of the present invention relates to means, in combination with the advantageous assembly of parts referred to, incorporated in the construction of the parts, to effectively limit the amount of liquid pumped. after the liquid has risen to certain amounts in the auxiliary-supply reservoir referred to.

Various other objects are within the scope of this inventlon such as relate to the arrangement. of the related elements or the structure, and to various details of construction and to economics of manufacture and numerous other features as will be apparent from consideration of the drawing and re lated description of a form of the invention. which may be preferred, in which- Fig. 1 is a diagrammatic view of the present invention applied to an automobile.

Fig. 2 is a vertical sectional view through the auxiliary tank and pumping mechanism. Fig. 3 is a top plan view ofthe unitary pump valve assembly.

Fig. 4 is a sectional view taken on line H of Fig. 3.- V

Fig. 5'is a sectional view on line 5-5 of Referring to Fig. 1, it is seen that I have illustrated an automobile chassis with an internal combustion engine 12, having a carburetor or other charge forming device 14, and a fuel supply tank located at a lower level than said carburetor 14 or at such a level that upon moving up a grade,

the supplyl5 is likely to be lower than the carburetor 14. An auxiliary supply reser voir 18 is mounted on the dash of the automobile as shownor in any convenient position to be higher than the carburetor 14 in all normal uses of the system. A; suppl line 19 connects the rear tank '15 with the auxiliary reservoir 18 while a pipe 20 isprovidedfto discharge fuel from the reservoir 18 to the carburetor 14.

Referring to Fig. 2 it will be seen that l I have illustrated herein as the pumping mechanism an inertia operated device including a weighted mass 25, spring supported on the sprin 26 and sliding over a piston rod 28 depen ing from the unitary pump valve case assembly 30. The unit 30 is preferably secured in the lid 31 of the tank 18 and has a flange 32 which rests upon a gasket 33 in a suitable opening 34 lll"'l3l16 lid 31. The unitary valve assembly 30 as hereinbefore intimated is made in such manner that the same can be readily constructed at a minimum cost expenditure and has been so compactly and relatively arranged with respect to the inlet and outlet passages, the valve and valve seat arrangement and the like, that the same may be die-cast.

Referring to Figs. 8, t and 5 it will be "ceive the end of the supply line 19. The pipe 19 dischargesinto a reservoir 39 which is constructed by providing the cylindrical well 40 -in the unit 30 and by tappingthe same as indicated at 41 to receive the screwthreaded plug 42, which closes the upper open end of the well 40 to form the chamber 39. If desired a strainer 43 may be attached to the plug 42 to screen the gasoline as the same passes through the pumping mecha nism. The bottom of the well 40 is provided with a connecting passage 43 to the adjacent valve chamber 45 which is likewise formed by providing a well 46 and a screwthreaded closing plug 47 (Fig. 4) provided at its lower edge with a plurality of ribs 48 against which the valve 49 contacts when drawn open by the suction of the pumping mechanism.

The valve seat is illustrated in the chamber 45 in the form of an up-turned lip 50 with which the disc valve 49 cooperates as shown. The die-casting 30 is provided with a transverse passage to connect the inlet valve chamber 45 with the outlet valve 56 which is formed in a manner similar to that in which the valve chamber 45 is constructed, that is, by providing the die casting 30 with a cast well 57 and closing the same with a screw-threaded closing plug 58 provided with the valve engaging ribs 59 as in the other construction. The outlet valve seat 60 is providedwith a rib or upstanding edge of the bottom of the well 57 and a check valve 61 is adapted to rest thereon as indicated in Figs. 2 and 4.

The outlet valve chamber 56 is connected,

' by a horizontal passage 62 and a vertical passage 63, the otherwise open end of the passage 62 being closed by a plug 64 after the die-casting is formed. The outlet passage 62 discharges into the auxiliary tank or reservoir 18. The body of the die-casting 30 is provided with a well or recess 65 to .receive the stationary pump piston 66 which is provided with a central passage 67 in line with the vertical portion 55 of the passage 55 between the two pump valves. The hollow tube 66 is secured to the die-casting 30 a in any manner as by swaging or the like.

The inertia mass 25 in the particular embodiment illustrated herein is preferably formed in such a manner as to have such a buoyancy that as the height of the liquid in the tank 18 incresases, thespring 26 becomes strong enough to overcome a tendency for the mass 25 to vibrate, and to effectively dampen oscillations when the height of the liquid reaches predetermined amounts in the i tank 18. To this end the weight 25 is formed in the embodiment illustrated by employing a sheet metal receptacle 70 carrying ahollow -forced past the valve central tube 71 to receive the statitmary piston 66, the receptacle 70 being filled with cement or a similar substance 72. The lower end of the tube 71 isclosed by a plug 74 adapted to carry an inverted cupshaped die-cast unit 30 when the mass 25 is suili-' ciently elevated. This construction will materially aid in the dampening of the oscillations of the mass and hence the dampening of the pumping action of the device.

Means are incorporated inthe device to permit manual operation of the pumping mechanism as may be desired and as illustrated in Fig. 5. Unit 30 is provided with a transverse passage or opening 80 through which slides a hollow plunger 81 carrying a spring 82 which engages with a spider 83-3 at the lower end thereof extending through transverse slots 84 in the plunger 81. Normally the spring 82 tends to keep the plunger in the upper-1nost position but the same may be depressed manually to causethe lower end of the plunger 85 to engage the weight 25 and vibrate the same against the action of the spring 26 to cause a manual action of the spring mechanism.

It will be seen that upon a relative movemen f. of the mass and plug 74 on the piston 66 due to vibration with respect to the. tank 18, gasoline is drawn through the inlet chamber 39, transverse passage 43, opening valve 50 and into the pump chamber formed by'the various passages including the transverse passages 55 and 55', the hollow chamber 67 in the piston 66 and the chamber above the plug 74 in the weight 25. When the weight moves in the op osite directionthe valve 50 is closed an the valve 61 opened and liquid in the pump chamber is and discharged through the passages 62 and 63 into the upper part of the tank 18. From the tank 18 the liquid may flow through the pipe 20 to the carburetor 14.

When the liquid in the tank 18 rises to a valve chambers in the die casting unit is such that the same may be easily and readily constructed in the manner indicated, as the die-casting thereof will be .readily appreciated by those skilled in the art. It will also be seen that by this construction the pump cylinder or piston 66 forms a guiding means for the weight 25 and that by depending both these parts from the top j of the tank 18 the action of the device in operation is facilitated, particularly when the spring 26 is associated therewith in some manner such as indicated to provide a further adjustment of position of the parts in action. 1

It is apparent that, within the spirit of the invention modifications and different arrangements may be made otherthan as here in disclosed, and the present disclosure is illustrative merely, the invention comprehending all variations thereof. 1

' Having thus described our invention, what we desire to secure by United States Letters Patent and claim is;

1. In a system of the character indicated, a combination of an auxiliary tank, an inertia member located in said tank, a spring cooperating with said inertia member and resting upon the bottom of said tank and a unitary die-cast pump valve assembly provided with inlet and discharge passages, inlet and outlet valves and a hollow stationary piston extending between said die-cast unit andsaid inertia mass, said hollow member being located between the inlet and outlet valves in said unit.

2. An inertia pumping mechanism comprising in combination, a tank, an inertia pump actuating mass of relatively great buoyancy arranged in said tank, a spring cooperating therewith and resting upon the cooperating therewith and resting upon the bottom of said tank and a pumping mechanism comprising a unitary self-contained inlet, outlet and inlet and outlet valve chambers, a hollow stationary piston on which said mass moves in operation and means associated with said mechanism for ,man-

ually actuating said pumping mechanism.

4. A device of the class described comprisv ing a tank, a cover for said tank carrying inlet and discharge valves and inlet and discharge passages, a hollow plunger supported by said cover, a spring resting on the bottom of said tank, and a weightsupported by said spring and having a pump chamber in which said plunger fits.

5. A device of the class described comprisin .a tank, a spring sea-tedon the bottom 0 said tank, a disc seati 1g on the top of'said spring, and a Weight having a pin at its" lower end projecting throu h a hole in said disc whereby. said Weight as a one point support on said spring, inlet and outlet valve niechanisms carried by the cover of said tank, and a plunger carried by said cover and working in a chamber formed in said weight.

In testimony whereof, we aflix our slgnatures.

CHESTER H. BRASELTON. CARL P. BROCKWAY.

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