US1525485A - Liquid-elevating apparatus - Google Patents

Description

Feb. 1 1925- 1,525,485

A. C; WOOD LIQUID ELEVATING APPARATUS Filed Oct. 51, 1921 3 Sheets-Sheet 1 Feb. 0, 1925. 1,525,485

A. c. WOOD LIQUiD ELEVATING APPARATUS A. C. WOOD LIQUID ELEVATING APPARATUS Filed Oct. 61, 1921 Patented Feb. 10, 1925.

UNITED STATES ANDREW G. WOOD, OF CHICAGO, ILLINOIS.

LIQUID-ELEVATING APPARATUS.

Application filed October 31, 1921. Serial No. 511,704.

To all whom it may concern: i

Be it known that I, ANDREW O. Woon, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Liquid-Elevating Apparatus, of which the following is a de scription.

My invention belongs to that general class of devices known as liquid elevating apparatus, and relates particularly to an apparatus for feeding or supplying a fluid or liquid to meet the required demand, the same being designed to elevate the fluid, if required, or draw the same from any desired point of supply. The device is particularly adapted for drawing gasoline or hydrocarbon from a supply tank and supplying it to the carburetor of an internal combustion engine as required, but its use, however, is not limited to this alone, as it may be used wherever found applicable.

The invention has among its objects the production of a device of the kind described that is simple, compact, durable, reliable, efiicient, satisfactory and positive in action.

Many other objects and advantages of the construction herein shown and described will be obvious to those skilled in the art from the disclosures herein given.

To this end my invention consists in the novel constructidn, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like or corresponding parts,

Fig. 1 is a sectional view through one form of my improved device;

Fig. 2 is a cross sectional view taken. substantially on the line 22 of Fig. 1;

Fig. 3 is a sectional view taken substantially on the line 3-3 of Fig. 1;

Fig. 4 is a view similar to Fig. 1, illustrating a slightly modified construction;

gig. 5 is a top elevation of the device; an

Fig. 6 is a sectional view of another modified construction.

Referring to the drawings, in which the preferred embodiments of my invention are shown, 1 represents a shell or tank part which is provided with a bottom 2 and closure 3, the several parts being constructed in any desired manner. IOrdinarily I prefer to arrange the closure part 3 so that it may be removed when desired, the same being secured in place byscrews or any equivalent for the urpose..

I have illustrate a filtering screen 4 arranged between the body part 1 and the closure part 3, the part 3 being preferably constructed so as to provide a chamber 5 above the screen, it being understood, however, that the screen may be depressed to afford the same results.

The device is provided with an intake pipe 6, preferably connectedwi'th an inlet duct in closure 3 and with the discharge pipe 7 as well as with the drain outlet which may be controlled by a drain cock 8 or the equivalent. It will be seen that the screen when employed is interposed between the inlet and outlet.

Referring particularly to Figs. 1 and 3, closure part 3 is provided with a duct 9-10, suitable means being provided -for inducing the flow of the fluid through and from the intake pipe 6 into said duct and discharged through port 11 into the chamber 5 of the device, from whence it passes through the screen into the lower portion of the easing. Obviously the screen 4 may be omitted, as the same is not essential, but merely removes any sediment or particles that are too large to pass through the screen. As shown in the illustration, there is provided a pum and any satisfactory type of pump may e used, that shown consisting of the cooperating members 12 and 13, which, when driven, cause the passage of fluid through the ducts 9 and 10, and port 11 into the tank, as will be more fully described hereinafter.

Members 12 and 13 may be driven in any suitable manner, a simple construction being shown most clearly in Fig. 3, in which 14 is the shaft connected with member 12 and arranged to be driven by a pulley 15, sprocket wheel or any equivalent for the purpose. Shaft 14 is provided with a gear 16, arranged to mesh with gear 18 on shaft 17, which drives member 13, so that members 12 and 13 are driven together and constitute a pump.

As most clearly shown in Fig. 3 referred to, a duct or port 19 is provided connecting the gear chamber 20 with the interior of the device, 21 being a vent ipe. Obviously the vent may be at any other desired point, but this construction, as shown, is generally pre an arm 28, pivot-ally supported at 29. Arm

28 is arranged to be controlled by a float 30, or its equivalent. As shown, the float is provided with a stem 31 carrying the clutch member 32 arranged to cooperate with the arm 28 and raise the same when the float rises a predetermined distance. I whether it be air or the liquid itself, through have shown the float provided with a stem 35 at-the bottom, arranged to cooperate with the guide 34 provided on the depending part 33 of the tubular member 23. If desired, a guiding member 36 may be arranged onthe closure for guiding the upper end of the float. Preferably, but not necessary,

I provide a check valve 37 of any desired type in the feed line or intake pipe 6.

The operation of this form of device may be briefly described as follows: It may be assumed that the tank is empty but that the pumping members 12 and 13 are driven, thereby inducing a flow of fluid through the intake pipe 6, thence through the pump, and finally be discharged through port 11 into the tank, Obviously the same will be again discharged or drawn off through the. discharge pipe 7. The capacity of the pump, however, being greater than the demand of the apparatus fed by pipe 7, the fluid will accumulate in the tank, and as it accumulates it will finally reach the point where the float being raised, will open the valve 27 through the mechanism described or its equivalent. Opening valve 27 will permit the entrance of air or vapor in the casing or tank to enter port 26 and pass through the ducts 2524 and 9 into the duct 9 and thence through the pump and duct 10 back into the tank. In other words, there will be a circulation of the air or any fluid that may pass the valve 27. Consequently there will be no draw on the pipe 6 and no additional fluid will be pumped into the tank. As the fluid is drawn from the tank through the pipe 7, if the same is not replenished, the float will tend to drop and close the valve 27. Consequently the introduction of fluid from intake pipe6 will be renewed and continued until the float is again raised.

The construction shown in Fig. 4 is substantially similar except in this case pipe 39 extends to adjacent the lower portion of the tank so that the lower end of the duct 40 indicated at 41 is below the float. The valve mechanism consisting of valve 42, arm 43 supported at 44, clutch member 45 arranged on the stem 47 of the float 46, is substantially similar to that previously described. In this case the float is provided with the guiding stems 47 and 48 and arranged to cooperate with the guides 49 and 50. The operation of this type of apparatus is substantially'similar to that described, except that being below the normal level of the fluid in the tank, the fluid itself is pumped or churned and circulated instead of the air'or vapor. In other respects the device is similar and indeed both of the constructions illustrated might be combined in the. same tank. However, this is a needless expense, as one is sufficient. Either one permits'a circulation of fluid,

the pump, which automatically controls the introduction of fresh fluidor liquid into the chamber. I have illustrated a simple valve construction. butit should be understood that the valve construction itself is immaterial. A modified valve construction is shown in Fig. 6, in which 51 represents a tubular depending part extending the desired distance into the tank, the passage of fluid throughthe tubular bore 52 of the same being controlled by a' valve 53. Valve 53 is shown connected with an arm 54 connectcd to part 55 on the float 56. Obviously, the float raises or lowers to control the valve and the circulation of fluid in the device itself.

It will be noted in the device herein described that the same consists of substantially few parts, is compact, and that there is nothing complicated to get out of order or wear. The same doesnot need priming and will become operative immediately the pumping members 12 and 13 are driven. The device is designed to supply all the fluid that is needed and operates automatically. The same will draw fluid from a point below the tank, making it particularly adapted for use on automobiles where the gasoline or fuel supply tank may be suspended, for example, from the rear. In operation, substantially a constant level is maintained in the device.

The device may be said to be automatically operable to control the admission of fluid to the tank from a source of supply or circulate fluid in the tank, this depending upon the demand or amount of fluid required. I

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same Without departing from the spirit of my invention;

hence I do not wish to be understood as tank, an outlet, a pump in the path of flow of said liquid through said inlet passage, a second passage leading from said firstmentioned passage in advance of said pump and communicating with said tank, and float operated means controlling the flow through said last-mentioned passage.

2. In combination, a tank having an inlet passage for discharging liquid into said tank, an outlet. a constantly driven pump in the path of flow through said passage, a second passage leading from said inlet passage in advance of said pump and communicating with said tank and normally closed. and float operated means operable to permit flow through said last-mentioned passage only when the liquid in said tank has reached a predetermined level.

3. In a device of the kind described and in combination, a tank having an inlet thereto, and an outlet therefrom, said inlet communicating with a source of liquid supply, a pump for inducing the flow of liquid from said inlet and discharging it into said tank, a second duct communicating with said inlet in advance of the intake side of said pump, and a float-controlled valve controlled by the height of the liquid in said tank to control the passage through said last-mentioned duct whereby when said valve is opened fluid from the interior of said tank will be induced to flow through said duct and inlet and back into said tank, interrupting the flow of liquid through said inletfrom said source of supply.

4. In a device of the kind described and in combination, a tank having an inlet passage and an outlet. said inlet communicating with a source of liquid supply and discharging it into said tank, a pump in said inlet for controlling the flow of liquid through said inlet into said tank, a tube leading from said inlet from a point in advance of the intake of the pump and communicating with the interior of the tank, a valve at the discharge end of said tube, a gravity float controlled by the liquid in the tank and connected to said valve to unseat it when the level of liquid within the tank reaches a predetermined height, whereby fluid from Within the tank will be caused to circulate through said tube, inlet and pump, and back into the tank, while at the same time interrupting the flow of liquid through said inlet from said source of sup- In testimony whereof, I have hereunto signed my name 1n the presence of two subscribing witnesses.

Images