US2496821A - Pump for dispensing cans - Google Patents

Description

Feb. 7, 1950 s. H. SMITH PUMP FOR DISPENSING CANS Filed April 29, 1947 Feb 7, 195% s. H. SMITH PUMP FOR DISPENSING CANS 2 Sheets-Sheet 2 Filed April 29, 1947 Patented Feb. 7, 1950 PUMP FOR DISPENSING CANS Samuel H. Smith, Atlantic City, N. J assignor to mma R. Dawson,

Atlantic City, N. J.

Application April 29, 1947, Serial No. 744,571

My invention relates. to new and useful improvements in dispensing cans, and, more particularly, to the pump that is either built. into the can, or fltted within a can.

Another object of the invention is to provide a dispensing can of the type mostly used for out board motors. As is well known, the fuel tank t an outboard motor is relatively small; and after the engine has been run for an hour or two, it is necessary to refuel the tank.

If the boat and outboard motor are used on inland waterways, oreven rivers and bays, if the water is rough or the tide is running swiftly, the rocking of the boat makes it ratherdifflcult to pour the gasoline from the ordinary iuel can into the tank, even though a funnel is used.

One of the principal objects, therefore, is to provide'a can for carrying gasoline, in which either a pump has been built into the can, or to use'the cans that are on' the market, remove the cap and install the small pump, so that it is. not necessary to tilt the can to. refuel-the tank of the outboard motor.

Still another object of; the invention is to provide a smallhand pumpv that is placed centrally of the can and so arranged that. after the pump,- ing of the. fuel into the fueltank, the gasoline in the outlet hose will drain out of the hose into the. tank; and any gasoline that is in the pipe or elbow near the inner end of the hose, will flew back into the dispensing can, so that there is no possibility of any of-the gasoline. in the hose spilling or running into the boat.

Still another object of the invention is to produce a pump that may be instantly installed in the conventinalyoans now used, making it unnecessary to tilt thecan to refuel the tank, and wherein ny asoline in the hose will either run into the refuelingtank: or back, into the dispensingcan.

With these and other objects in view, the invention consists in certain new and novel features of construction and combination of parts as will be hereafter more fully described and pointed out in the claim.

Referring to the drawings, showing a preferr d form and a modified form,

Fig. 1 is a sectional view showing my new pump built into a dispensing can;

Fig. 2 is an enlarged, sectional view of the lower end of the pump;

ig. 3 is a sectional view taken on lin of Fig. 2;

Fi 4 is a sectional view simila to Fi 2, b with the p s on drawing the liquid into the P p;

Fig. 5 is a sectional view similar to Fig, l of the modified form show g my pump fitted int the conventional dispensing can;

Fig. 6 is an enlarged, sectional view of the lowc amber 15. is he upper- 1 Claim. (Cl. 222*385) er end of. the pump, showing the piston in a partly raised position for forcing the liquid from the. pump; I

Fi '7 is a side elevation of the pump'taken at right, angles liQFigi 5 and Fig. 8 is a sectional view Fig; 6.

Reierrin ow more part cularly to s... 1 o. 4 inclusive, showing the pump. as built into a di p nsin an there is shown the can I w th ts dom 2: a d, th i let 3: i h th ntral; fice th. h can whi central y oi the orifi e 4 s the pump .lilxteudins to o e side of the pum 6 may be seen the utlet n ne 1, t e. elbow 8 fitt d in h crown 2 w ile r m t e el ow 8 8X."

tends the dispensing o1;- outlet hose 9.

In this term of pump there is revided a ar plate 10 which s olde ed; or welded to. the suriace o th c o n 1 abo t th orifi 4;- the plate i a so being fit ed, about and ol ered. t the piston I I. This plate Ill also provided with p tures. I2 so that if t e fluid or asoline se above a pist n 1 by pu l ng up he iston ro in the liquid above the pi t n .3 wi l; run hr u h the openings l2 back into the dispensing can I.

This. arrangement s d sirable, as. otherwise it mi ht be dif icult after e can has been, standing for a wh le to raise th pisto 3.

la cing new at Fig. 2, ther may e. the valve chamber 15 which is welded or 0th?!- wise permanently ecured to ne side i the. cylind r ll. Also ther s ma n p rt l6 eading fr m the lower end .Of the cyliude f l into the valve chamber I5. Built in the valve va ve sea 11 and the ower va ve s at 8 with the ports n he upper valv ea l1 and th po s n the lower valve ea l8- F tted w hin t e alv seat H s t valve Us a d l kewise fi t w hin the valve seat 18 is the valve l8a. These valves Ha and. I84; are similar and are weighted so, tha they ar bo normal y a closed pos There is a small cover. l9 over the bottom of the chamber I5 with its central opening 2,0 EX- tendins from th top o he valve ham e 5 s. the. outlet pipe. heretofore m nt on d; and. it, wil be noticed (Fig. 1) ha ne the pper nd. of the pip 1 ust below t e c n 2 there is th smal orifi e 2 he. purpose o hi bein that a t h pi ton r d [4 has en pera ed, any gasol ne n. the ub 9 wi l nat rall ow out hrou h e be u if he outer end were eleva ed, o he e was any gas back f he. rear nd of the hose 9 o n the el 8 it il d a n in to t eca hr ugh the o ific 2 els to make sure that here in the ub 9 ite h op r tor h s i ui pumping, he should raise the outer end i the tub .9 abo e the lev l i th can I nd a taken on line 8.-..-.-8; of-

no ga leit in the tube 9 will drain back into the elbow 8 and out through the orifice 2| into the fuel tank.

Of course, when pumping the gas from the can I, a small-amount will be shot through this orifice 2| back into the can I but the opening is so small that the amount that goes back into the can I, rather than being dispensed, is negligible.

Thus it will be seen in refueling an outboard motor it can be done without spilling a drop in the boat or on the deck.

The operation of the valve iseasily understood, so only a brief reference is made thereto. When the piston rod I 4 is raised (Fig. 4) the suction will cause the gasoline in the can I to pass up through'the opening 20 and the suction will also raise'the valve I So on its seat I 8 and cause the gasoline to pass through the port I 8' through the port I6 and up'into the cylinder H. The suction and the weight in the meantime will both tend to close the upper valve Ila.

Referring now to Fig. 2, which shows the downward stroke of the piston 13, the pressure will cause the lower valve [8a to close as the port I 6 is above this valve and will cause the upper valve I 1a to rise to permit the gas to pass through the ports I 1' up into the dispensing pipe 1 where a negligible part will be forced through the orifice 2|; but the remainder will pass through the elbow 8, and, of course, out through the dispensing hose 9.

As heretofore mentioned, this is the type of pump that is to be used when the pump is permanently built into the can I as it is a little cheaper to manufacture than the modified form aboutto be described.

Referring to the modified form, as shown in Figs. to 8, it will be understood that this form is to be applied to the dispensing cans now in general use.

The central orifice or opening is generally two and one-eighth inches (2%") in diameter, so that to pass this pumpwithin this type of can, it is necessary to use a difierent form of valve chamber than that shown in Fig. 2 of the preferred form, as the over-all diameter of the cylinder and the valve chamber in this form is 1/grea'ter than two and one-eighth inches (2 Therefore, instead of building the valve chamber to one side of the cylinder, I construct it at the bottom of the cylinder, so that the pump may then easily be fitted within the opening of the standard type of dispensing can. In this instance, the pump and the dispensing pipe and tube form a unit that may readily be passed within the orifice of the can and a cap screwed over the plate about to be mentioned, and the tank then ready for use.

Referring now to Fig. 5, there is shown the cylinder 25. It will be noticed that at the top thereof there is welded or soldered a central plate 26 to rest on a flange 21 about the central opening 28 in the crown 29 of the can 30. There is also provided a top 3| of the cylinder 25 that fits over the plate 26. There is also a screw cap 32 which is cut out centrally to leave the flange 33 to clamp down on the plate 26 that, it will be remembered, is secured to the cylinder 25. Thus, when the pump is placed in the central orifice 28 and the screw cap 32 is turned down in position, it will tightly clamp the plate 26 and the pump in place. Over the usual inlet 34 is fitted a metal cap 35.

Referring now to Figs. 6 and 7, there will be also be seen the lower valve seat 40 with its ports and the valve 40a fitted on the valve seat 40. Likewise there will be seen the upper valve seat M with its ports 4 I and the fitted valve 4 la. Also may be seen the port 42 located above the valve 4! which leads into the dispensing pipe 43. This pipe 43 also has the small opening 44 near its 'upper end and just before it passes through the plate 26. The pipe is then bent as at 45 to which is "attached the dispensing hose 46.

The valve chamber 36 also has a small opening 41 in its bottom for the entrance of the fluid into this chamber. There is a piston 48 with a piston rod 49 that passes up through the plate 26 and top plate 3|; and there will be a small handle 50 at the top of the piston rod 49.

I can also use a packing nut 5| about the piston rod 49 and this may also be used in the preferred form.

The pumping operation and the movement of the valves are exactly the same as in the preferred form, that is, when the piston 48 is pulled upwardly, the lower valve 40a will rise off its seat 40 and the upper valve 4la will remain closed so that the cylinder 25 will fill up with gas. Here and on the down-stroke the pressure on the valve 40a will close the same and the under pressure on the upper valve 4la from beneath will open the-same, so that the liquid will be forced into the dispensing pipe 43 and out of the tube 46.

Also near the upper end of the cylinder 25 there are the plurality of orifices 52 so that if any liquid gets above the piston 48 the up-stroke of the piston 48 will cause it to flow out of these orifices 52 back into the can.

Thus, it will be seen that the action and arrangement in both the preferred and modified forms is practically the same, with the exception that in the modified form, the pump may be used and sold as a unit and installed in cans that are now on the market, due to the fact that the overall diameter is less than that of the central opening in the present cans.

From the foregoing, it will be seen that I have provided a pump that may be permanently built into a can; or temporarily fitted in cans now in use, so that it is not necessary to tilt the can when refuelling the tank; and it is also possible to refuel an outboard motor even though the boat is rocking, without spilling a drop of gasoline on the motor, or on the boat, or in the boat.

It will be understood that throughout the specification I have mentioned the special adaptability of the can for use with outboard motors. However, the can may be used as an auxiliary tank to be carried in an automobile and used in an emergency; or, in fact, it may be used wherever a small quantity of gasoline is to be dispensed.

Furthermore, the parts are readily assembled and the unit type, or the modified form may be placed in a standard can within a matter of moments.

Having thus described my invention, what I claim is new and desire to secure by Letters Patent is:

In combination with a small dispensing can having a central opening, a pump, comprising a cylinder, a plate secured at the upper end of the cylinder and provided with openings for drainage purposes, spaced slightly inwardly from the periphery, said plate permanently secured in the can beneath said opening, a valve chamber secured to one side and near the lower end of said cylinder, a port leading from the port to the valve chamber, an upper and lower valve in said valve chamber and spaced respectively above and below said port, an inlet port for the valve chamber and an outlet pipe from the valve chamber, a flexible hose connected to said outlet pipe, the outlet pipe passing through the upper portion of said can, a piston for drawing fluid into the cylinder and for forcing it out of the cylinder through the outlet pipe, and the outlet pipe provided with a small orifice near its upper end and 15 within the can, whereby any fluid remaining in the outlet pipe above the orifice, after pumping, will drain back into the can.

SAMUEL H. SMITH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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