US1748985A - Liquid-delivery device - Google Patents

Description

March 4, 1930. R. s. HUNICKE LIQUID DELIVERY-DEVICE Filed March 15. 1927 2 Sheets-Sheet 1 March 4, 1930. R. s. HUN ICK E I LIQUiD DELIVERY DEVICE Filed March 15. 19277 2 Sheets-Sheet 2 avwemtoz Patented Mar. 4, I930 UNITED ,s'r TEs PATENT OFFICE] n amonn STEWART numcxE; E ELIZABETH, NEW JERSEY, ASSIGNOR TO THE;

BAEEE T comm, OF NEW .YORK, N

. Y., A GORBORATION OF NEW JERSEY LIQUID-DELIVERY DEVICE Application filed March 15, 1927. Serial No. 175,538.

, This invention relates to means for siphoning from a container a predetermined amount of liquid.- 7

In a number of large cities stringentregulations have been passed with respect to the delivery and sale of combustible orexplosive liquids such as gasoline, benzol and the like.

In some congested areas canning ofi ofthe liquid from the tank truck is forbidden. To partially circumvent this provisionthe truc s are made up of a series of separate tanks or containers of approximately 250 gallons capacity in each tank or container but the purchaser can thus only buy in 250 5 gallon lots. Means for delivering predetermined amounts of a lesser quantity are de-. sirable. l One of the ob'ects of this invention is to provide means ordelivery of a pr detergo mined amount of liquid from a compa inent by siphon or suction means; Another object of the invention is to utilizethe present form of truck without material alteration.

Still another object of the invention is to provide such delivery means in such a manner as not to affect the eflicacy of the siphon. Still other objects of the invention are to' provide a delivery mechanism thatiwill be simple in construction, positive in operation, free from mechanical upkeep, but, in case of repairs (being necessary, can be easily repaired and one from which the purchaser can be certain of receiving the predetermined amount *of liquid desired. y

Referring to the drawings:

Figure 1 is a view in side elevation, parts broken away of a siphon tank truck embody-l circular casting or casing 9 which I prefering the principles of myinvention.

' Figure 2 is a; view in cross section ofa container of the tank truck showing the valve mechanism. V

' valve mechanism along the line 3,3, of Figure 5, looking in the direction offthe arrows.

- Figure 4 is a cross section of a valve mechanism along the line 4, 4, of Figure 5, looking in the direction of the arrows. Figure 5 is a plan view of the valve mecha- Figure 6 is a plan view of the valve mechanism with the cover removed.

In the present siphon-truck a shaft 1 runs along the top of the containers. This shaft when moved longitudinally selects the delivery valve of the desired container, by-

neans of rocker arms 2 which are mounted in differentially spaced .relatlon on shaft 1, and levers 3, 4, from which container the liquid is to be siphoned and a rotating or rocking of the shaft 1 lifts the valve from its seat. I propose to utilize this form of mechanism although'any other well known valve lifting mechanism can be used.

In carrying out my invention, I propose to provide means for interrupting the siphon or suction withdrawal of liquid from a. container when the liquid therein reaches a predetermined level, whereby .predetermlned amounts of the liquid can be withdrawn.

The invention comprises one or more small withdrawal pipes 5'having valves 6 therefor surrounding the-delivery valve '4'. The lower ends of pipes 5 terminate at different levels in the liquid'within the container 8, the 118- ,per ends thereof communicating with -t main withdrawal line,v as will be more clearly described hereinafter. The auxiliary valves 6-are interposed between theipipes 5 and the main withdrawal line and can be selectively lifted so that when the level of the liquid reaches the bottom of the pipe that has had its valve lifted, air is admitted therethru and into the main withdrawal line,- thereupon intgrrupting the withdrawal of liquid there- 1; ru.

In carrying out my invention, I provide 'a ably secure to the container top by welding the flange 10-to the shell of the container 8. Although I have shown six passages 11,

I Figure 3 is a cross sectional view of the cas mg It Is obvmus that the her as desired. These passagespassages 11', in any suitable manner as by threadin or welding; The central passage "11,,is o larger diameter and corresponds to the present delivery passage from' the con-- tainer. Withinchamber 13 and in said central passage 11', operates main withdrawal valve 7. The seat 14 for this valve may be formed in the casting or, as I have shown, separately made and threaded therein. The advantage of making the seat separable is that a guide 15 can be provided as a pilot for the valve stem 16. Above the valve 7 and secured to the valve stem is a plate 17 having a finger or lip 18, extending beyond the periphery of valve 7, said finger or lip 18 being adapted to selectively engage and lift disks 34 secured to stems 22. In each passage 11 in casting 9, I provide valve seats 20 for auxiliary valves 6. Also in casting 9,1.

provide pilot guide holes 21 for the auxiliary valve stems 22. A cover plate 23 is bolted by stud bolts 24 to the flange 10 of casting 9 and has corresponding pilot guide holes 33 and 33 respectively for stems 22, 16. Cover plate 23, contains chambers 25 and 25', to provide for valve stems 22 and 16, and helical springs 27 and 28. Centrally thereof the main valve stem 16 passes through the top of chamber 25' of said cover plate 23. A stuffing box 29 is also provided for said central stem 16 in said cover plate 23. Each of the tops of the chambers 25 in said cover plate is marked with numerals 3O denoting the amount of liquid that may be withdrawn in the operation of that particular auxiliary valve. A pointer 31 is carried by main valve stem 16, and has the same direction as the lip 18 on the lifting plate 17. Main with drawal pipe 32 and delivery pi e 36 are threaded or welded in passages 11 11'. A gasket 35 is provided between cover plate 23 and flange 10. As shown in Fig. 1 delivery pipes 36 communicate with a manifold 37 which is connected with a suction pump 38 of any well known type, preferably manually operable, and also with a by-pass 39 provided with a valve 40, both the by-pass and pump leading to a common outlet 41 from which the liquid may be dispensed thru hose 42. The customary airports 44 are provided in the manhole covers 45 surmounting each container, for the admission of air in the containers during the withdrawal of the liquid therefrom. Both the pump and bypass and the air admission constructions are well known in this type of tank construction as disclosed, for instance, in Patent No. 1,614,561 to Kramer. The operation of the device is as follows: The driver of the truck under the supervision of the purchaser rotates the pointer to the desired auxiliary valve in the container which is to be emptied of the pre determined amount of liquid, moves the shaft 1 of the valve operating mechanism to the proper position to lift the main valveand the predetermined auxiliary valve of the particular container and then rocks said shaft 1. This causes the lifting of main valve stem 16 and the rising of plate 17, the lip 18 of which lifts or opens the desired auxiliary valve 6. The suction pump 38 is then operated to reduce the pressure in pipe 36 and thus initiate the flow of liquid from the tank in the container 8 up thru pipe 32 and passage 11, and also up thru the pipe 5, whose valve is raised and the corresponding passage 11, thence thru chamber 13, passage 11 and down thru pipe 36. When the hose 42 commences discharging liquid (initiated by the operation of pump 38) the operation of the pump may be and preferably is suspended and the by-pass valve 40 simultaneously opened so that the siphon thus established may continue to discharge the liquid from the container without fur- .is to the bottom of pipe 5 of the auxiliary valve 6, that has been opened, the siphon stream is broken by the admission of air up thru pipe 5, the valve of which has been opened, into the main siphon line; thereupon breaking the siphon stream and causing delivery of the liquid to cease. If it is desired to drain the entire tank the pointer 31 is moved to an intermediate space, and not opposite anumber on cover plate 23 so that no auxiliary valve is lifted; the flow will then continue until the tank is empty.

It'will thus be seen that the tanks can be properly calibrated and the auxiliary pipes can be made to remove the desired amount of liquid. It is important that chambers 13, and the auxiliary chambers 25 and 25 in the cover plate be as small as can be made in order to reduce the necessary pumping in connection with the starting of the siphon.

It should further be noted that all moving parts are enclosed within the'casting and cover-plate exceptthe main valve stem 16 so that danger of air leakage is avoided and is no greater than with present practice.

Although my invention has been shown embodied in a siphon tank truck, I do not desire to be restricted in its use to such a device as it is adapted to deliver predetermined amounts of liquid from any container where drainage is by suction or siphon.

What I claim is:

1. In a liquid delivery device the combination which comprises, a container for the liquid, a main withdrawal pipe, valve controlled auxiliary withdrawal pipes communieating with said main withdrawal pipe, all pipes terminating in said container and said auxiliary pipes terminating at higher levels than the main pipe, and at different levels in said container and suction means connected with the main pipe exteriorly of the container for withdrawing liquid from said container,

whereby the withdrawal of liquid from the container may be interrupted when the level of the liquid therein caches the level ofthe termination of any auxiliary pipe selected.

2. In a liquid delivery device the combination which comprises, a-container for theliquid, a siphon associated with said 'c ontainer, a plurality of valve controlled auxm iliary withdrawal pipes for said siphon extending into said container and communicat-- ing with the siphon intermediate the extremities of the siphon, said pipes terminating in said container at progressively spaced points above the termination of said siphon therein, whereby a siphon stream in said siphon may be broken when the liquid in said container reaches the levels of the terminations of said auxiliary pipes in said container.

3. In a liquid delivery device the combination which comprises, a container for the liquid, a siphon associated with said container for withdrawing liquid therefrom a plurality of auxiliary withdrawal pipes or said siphon extending to different levels in the container above the termination of the siphon therein and communicating with said siphon intermediate the extremities thereof, a valve normally closin the passage in the siphon, a valve for eachpipe normally closing the respective passages of-said pipes, and means selectively opera le to open said siphon valve andone of said ipe valves, whereby a siphon stream may be roken when the liquid in the container reaches the level of the termination therein of the selected pipe.

4. In a liquid delivery device the combination which comprises, a container for the liquid, a valve casing mounted in said container, a main withdrawal pipe terminating at one end in said container, and at the other v in said casing, a delivery pipe terminating at one end in said casing in communication with said main withdrawal pipe and terminating at the other end externally of the container, an auxiliary withdrawal pipe termi- 7 nating atone end in said container at a level above the termination of the main withdrawal pipe and terminating at its other end in said casingin communication with the main withdrawal pipe and the delivery pipe,

a valve in said casing normally closing the passage in said main withdrawal pipe, a valve in said casing normally closing the passage in said auxiliary withdrawal pipe, and means for simultaneousl moving said valves out of closing relations ip with said passages, whereby liquid may be withdrawn from said container until the liquid reaches the level of '0. the termination of the auxiliary withdrawal p1 e. V p

In a liquid delivery device the combination which comprises, a container for the liquid, a siphon associated with aid contamer, and fixed auxiliary pipes, each of which has one end communicating with said siphon and the other end in communication with the liquid in;the container, said other ends being arranged at diflerent levels in the container.

6. In a liquid delivery device the combination which comprises, a container for the liquid, a siphon associated with said container, a-valve in said siphon, a plurality of .pipes connected to said siphon, each arranged to terminate at different predetermined levels in the container, valves in said pipes, and means for simultaneously opening said, valve in-said siphon and any one of said valves in said pipes.

Signed at New York, in the county of New York, and State of New York, this 12th day of March, A. D. 1927.

RAYMOND STEWART HUNICKE.

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