US1402835A

US1402835A - Arthur bywater

Info

Publication number: US1402835A
Authority: US
Publication date: 1922-01-10
Anticipated expiration: 1939-01-10

Description

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A., D. AND L. BYWAT'ER.

APPARATUS FOR RAISING AND FORCING OILS.

APPLICATION FILED MAR. 12, 1919.

I Patented Jan. 10, 1922-.

ARTHUR BY'WATER, DAROL BYWA'IER, AND LENNOX BYWATER, OF LONDON,

E1\TGLA1\TD.

APPARATUS FOR RAISING AND FORGING OILS.

l,4lll2,835.

Specification of Letters Patent. Pg tgnted ,1? an, 1Q, 1922,

Application filed MarcliS, 1919. Serial No. 281,569.

ing and forcing oils, as for example for garage or motor or like station use Where motor fuel is designed to be in or atconstant service, and is broadly of the class in which the oil is propelled by a heavier liquid and a closing valve is provided which is floated by the propelling liquid and let down by the propelled liquid.

The present invention more particularly relates to those systems in which overcharging of the storage tank is prevented by a water or balancing leg depending from the bottom of the tank so as to balance the charging head when the storage tank is filled with oil, and according to the'present invention the effective water or balancing leg'is reduced or shortened by a valve system having main and auxiliary connections with the tank, this valve system being located at or just below the bottom of the storage tank, and the valve having a density slightly less than the propelling liquid but'greater than the propelled liquid so as to be floated olf its seating by the propelling liquid and let down on its seating by the propelled liquid.

Means are convenlently and advantageously provided to protect or defend the valve against shockand the ball valve cham ber may be provided with an air vent and air cushion at the upper part.

Advantages of the valve system with main or auxiliary connections according to the invention are that it may be constructed separately from the tank and inserted as an adjunct in the pipe leading to the tank; it being easy to arrange for detachment of the connection for examination, renewalor repair. "When forcing out the oil the valve is raised and held clear ofthe inflow, and when forcing out water or the like the valve is prevented from hammering on its seating by the combined action of the main flow and the auxiliary flow of water, the

auxiliary flow countering the tendency of the main flow to set up suction or vortex action on the valve. Thus there is no suction on the valve until the tank is actually full of oil and in' forcing out the oil the valve is almost immediately raised clear of the influence of the inflow.

The invention may be conveniently and advantageously carried out as follows, reference being had to the accompanying drawings, in which *ig. 1 is a part section of the tank with the valved device applied thereto, and

Fig. 2 is a sectional view of the valved device, slightly modified.

a is the storage tank, 6 the propelling water column pipe leading to the drain through which the water is displaced during the filling of the tank with oil, 0 the valved chamber to be hereinafter described, and j the inway and outway pipe'for the oil.

By appropriate control valves the tank a may be connected in known manner through the pipe 6 with a water supply system operating at a certain head or, otherwise with the drain.

The system depends on the difference between the specific gravity of the propelling liquid, for example water 1.00, and the propelled liquid, for example, petrol 0.72 (average). On this difference depends the relative heights of balancing columns of petrol and water for-example.

Such a system'described, or example, in relation to water as the propelling liquid, operates as follows The tank a having been filled with water from the water supply, the water supply valve is closed, and the valve allowing water to discharge to the drain is opened. Petrol is supplied, either through the funnel or a filler connected to the pipe j or by means of a'flexible hose in either case at a level higherthan the level at which the wa-" ter is discharged to the drain.

The hose and filler connections are valve controlled so that when one is open the other may be closed, or both may be closed, and a back pressure valve is interposed between the ccnnections and the tank a.

The difference in the respective heads of the petrol supply and water discharge causes the petrol to displace the water in the storage tank a and discharge it to the drain.

Having filled the storage tank a with petrol, the water discharge valve is closed. To deliver petrol into a distributing connection leading from the pipe y" the water and in one construction, such a system has embodied a water-leg extending downwardlyfrom the storage tank a to form a hydrostatic column adapted to overbalance the charging head or charging pressure of the petrol, as for example, governed by the height of the petrol in the filler or in the tank of a tank wagon hose coupled thereto.

A long water-leg is open to the objection that it involves costly excavation work, a

1 disadvantage which is overcome by the present invention according to which a valve system, embodying a flotation valve normally sustained by the water to open the water connection with the storage tank a, but adapted when the storage tank isfilled with oil to fall and close the water connection with the storage tank, is'so ordered that the valve chamber is connected with the storage chamber by middle and upper branches or passages whereby the valve, which canrise above and clear of the middle branch or passage, is brought under the in fluence of main or intermediate and auxiliary or upper flows of liquid, whose combined action prevents that hammering of the valve on its seating which otherwise, without the auxiliary or upper flow, would by its violence, damagenot only the valve, but the storage apparatus in general, the

effect of the auxiliary or upper flow of water being to modify or counter the tendency of the main or medial flow of water to set up suction in the valve to cause this to hammer violently, there being no such hammer causing suction produced on the valve of the present device at any time, the valve,-

when the storage tank is filled, being let down softly on its seating with little or no agitation.

In carrying the present invention into practical effect, at that end of the storage tank 64 adjacent to the propelling watercolumn pipe I), the bottom of the tank is placed into communication with the water column pipe through the. mediation of a valved chamber 0. The bottomof the chamber communicates by a suitable bend d with the water column pipe and at the middle and top of the chamber, the chamber communicates by'branch pipes with the bottom of the storage tank a (this being usually a horizontally placed cylinder of iron) through connections which are made respectively as shown, on the longitudinal wall of the tank a and on an end wall of the tank a.

The valve ball is shown in its two positions by e and 6 respectively. Fig. 2 shows the valve chamber 0 on an enlarged scale, and in the chamber 0 is the aforementioned ball valve of the character described, this being conveniently made of hollow brass and adjusted by internal loading to the required specific gravity. Over the valve is a confining or guiding cage f which allows the valve to rise in the presence of the propelling liquid (in the exemplar case water) above and clear of the middle branch, also to sink on to a leather or other appropriate seating g if andwhen the propelled liquid .the chamber a to the tank a; this upper branch being an organ for realizing or facilitating equilibrium.

With a water or balancing leg adpmct substantially as described, better facilities are given for accommodating oils of widely varying specific gravities.

7' designates the outway pipe for petrol.

In relation to the chamber 0 (Figs. 1 and 2) it may be expedient to provide an air pipe m, Fig. 2, this serving to allow the outpour or outlet of any air which may lodge in the apparatus, or alternatively an inway for any air which may be desirable as a; buffer; an appropriate control or valve being provided at the upper extremity of the pipe at. The lower part of the pipe we may be expanded and made to contain a mass or volume of air to give a cushioning efiect.

In the above description, instead of water an aqueous solution or technically equivalent fluid of higher specific gravity may be used as solution of calcium chloride, spent lye or waste or other saline solution. The double advantage of greater immunity against peatedly. Sea-water if on supply may be especially useful.

In the action of the ball valve 6 there is a tendency to an undesirable blow or shock when it passes from end to end of the guidecage f, and the applicants relieve or modify this by constrictingthe flow increasingly'as the ball progresses, as, for example, by enveloping or clothing the upper and lower portions of the cage with wire meshing or perforated metal or material as shown at 0 and 0 (Fig. 2) sothat the ball on entering either one of the clothed portions, 0 or 0 may experience resistance,-which resistance may be made greater or less diminishing or increasing the size of the perforations; the perforated casings thus acting as defences against shock.

The top of the cage may be fitted with a mat, tender or bulier or the like a.

What we claim is 1. In an apparatus of the class described, in combination, a water column, a storage tank, a discharge pipe from said storage tank, connecting means between said water column and said storage tank comprising a valve chamber with main and auxiliary connections communicating with said storage tank, said chamber containing a valve of specific g'avity intermediate the propelling liquid and the propelled liquid.

2. In an apparatus of the class described, in combination, a water column, a storage tank, a discharge pipe from said storage tank, connecting means between said water column and said storage tank comprising a valve chamber with main and auxiliary connections communicating with said storage chamber, said chamber containing a valve of specific gravity intermediate the propelling and the propelled liquid, and a metal guiding cage for said valve.

3. In an apparatus of the class described, in combination, a water column,a storage tank, a discharge pipe from said storage tank, connecting means between said water column and said storage tank comprising a valve chamber with main and auxiliary connections communicating with said storage tank, said chamber containing a valve of specific gravity intermediate the propelling and the propelled liquid, a metal guiding cage for said valve, and shock absorbing means at each end of the chamber to prevent injury to said valve when it is at extreme positions in the cage.

4:. In anapparatus of the class described, in combination, a water column, a storage tank, a discharge pipe from said storage tank, connecting means between said water column and said storage tank comprising a valve chamber with main and auxiliary con nections communicating with said storage tank said chamber containing a valve of specific gravity intermediate the propelling and the propelled liquid, a metal guiding cage for [said valve, shock absorbing means at each end of said chamber to prevent injury to said valve when it is at extreme positions in the cage, and retarding means, as wire meshing, for obstructing and retarding the rise or fall of the valve as it reaches its extreme positions.

In testimony whereof we affix our signatures.

ARTHUR BYWVATER. DAROL BYWVATER. LENNOX BYWATER.