US1749970A - Automatic liquid-dispensing machine - Google Patents

Description

March 11, 1930. RE. COLLINS 1,749,970

AUTOMATIC LIQUID DISPENSING MACHINE Fild Feb. 15. 1928 I Q-nu'enkw R.E.C0llins.

Patented Mar. 11, 1930 UNITEDVTSTATE'S PATENT OFFICE,

ROBERT E. COLLINS, OF TOPEKA, KANSAS, ASSIGNOB TWENTY-FIVE TO CONSTAN'I'INE G. CHUMOS, OF TOPEKA, KANSAS Application tiled February 1a, 1928. Serial No. 254,698.

The present invention relates to improvements in automatic liquid dispensing machines, and has more particular reference to a valve arrangement therefor.

5 An object of the invention is to provide a device particularly useful for measuring and delivering gasoline through automatic mechanisnnwhereby an attendants or station operators time is conserved.

providing an improved automatic mechanism' involving coordinate valves for conitially for the quantity of gasoline desired by the customer, and the mechanism will carry out the purpose automatically withoutfurther attention on the part of the operator.

A further object of the present invention is -to provide a simply constructed, compact valve casing, internal valvemechanism, an external control, so situated and arranged as to be released by the action of the overflow gasoline in the measuring vessel. v

4 With the foregoing and other objects in. view, the invention will be more fully described hereinafter, and will be more particularly pointed out inthe claims appended hereto. v

' In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views, J

The figure shows a side elevation, with parts broken away and parts illustrated in section, of a gasoline measuring and distrib-' uting machine constructed according to the present invention.

Referring more particularly to the drawing, 10 indicates the ground line or surface of i A a gasoline filling station conventional for automobiles. Numeral-11 indicates upright adapted to surround the mechanism and prevent unauthorized persons from tampering with the interior arrangement of its parts; it being understood that the fragment of the housing 12 which is shown is continued upon all sides of the machine.

Another object of the invention residesin:

' i above the supports or legs, and 12 a housing which is Numeral 13 indicates a cylindrical container ormeasuring device mounted upon the support or legs 11, said container preferably being formed of transparent glass. 14 and 15 respectively indicate the bottom and topl of the member 13 and 16 indicates a vent ole .cap. The members 14 and 15 are preferably formed of metal. 17 indicates a graduated scale formed upon the side wall of the member 13, its graduations denoting gallons of gasoline.

Numeral 18 indicates a storage tank for containing compressed air, which is supplied by a compressor engine run by a motor, the latter two elements not being shown. 19 indicates a conduit pipe adapted to conduct the air from the compressor engine to the tank 18, the latter being preferably placed ound. ,20 indicates a pipe leading from t 1e pressure tank 18 upwardly for purposes later described. The pipe 20 is provided with a pressure reducing valve 21 shown in dotted lines which is adapted to reduce the pressure of the storage tank to a prelssure, of say, thirty pounds to the square 1nc Numeral 22 indicates a pipe leading from the mechanism above the ground to a small auxiliary tank 23, which is placed below the ground. The upper ends of the pipes 20 and 22 are ada ted to have commumcation with each other y opening a valve 24. c

A pipe 25 is connected with the bottom of the auxiliary tank 23 and is connected to the bottom of the measuring device 13, and is provided with a check valve 26. A pipe 27 is attached 'to the bottom of the measuring device and is in communication with an outlet pipe 28 at desired times and at other times said communication is cut off by means of a valve 29. The pipe 28 is in communication with a flexible hose 30 which is provided with a nozzle 31.

The measuring device 13 is in communication at all times with an over-flow pipe 32.

. The pipe 32 extends downwardly and is in Within the over-flow pipe 32 a bucket 34 is placed. The bucket is provided with a plubucket will gradually seep through or leak through said apertures. The bucket is suspended upon a wire 36 which extends through the overflow pipe 32. The wire 36 is further provided with a spring 37 for normally maintaining the bucket 34in a raised or upwardposition. A valve 29 is provided for cutting off the flow of liquid from the member 13 to the hose 30. p I

About the overflow pipe 32 is placed a housing 39 which is attached to the bottom 14 of the measuring device 13. The housing 39 encircles the overflow pipe 32 in a manner whereby leakage of gasoline from the member 13 will be prevented. The interior diameter of the housing 39 is larger than the exterior diameter of the overflow pipe 32 and in the space thus formed a tubular adjustable member 40 is loosely positioned whereby it is adapted to have vertical reciprocating movement. A rod 41 is attached to the bottom of the tubular member 40 and extends outwardly of the housing 39 and downwardly, leakage atthis point being prevented by means of a packing ring 42. Upon the lower end of the rod 41 and exteriorly of the sides of the housing 12, a handle 43 is provided. An adjustable indicating finger 44 is mounted upon the rod 41. At any convenient point, such as upon the side wall of the device or a leg thereof, an indicating scale 45 is provided. The graduations of the scale 45 cor-- respond with the graduations of the scale 17 formed upon the measuring vessel 13. Adjacent the scale 45 lugs are providedas shown at 46 whereby upon the placement of the in dicating finger 44 upon said lugs, the adjustable tubular overflow pipe 40 will be held and prevented from downward movements.

A housing 47 for the valves 24' and 29 is provided. The housing is provided with a c amber 48 which is in communication at all times with the pipe 20 and a second chamber 49 is likewise in communication with the pipe 22. The valve 24 is attached to its stem 50 by any suitable means and it will be understood that when the stem 50 is moved outwardly that communication will be established between the pipes 20 and 22.v A vent 51 is provided upon the valve housing 47 whereby communication with the atmosphere.

is at all times established with an interior chamber 52 of the valve. Communication between the chambers 49 and 52 may be prevented at desired times by means of a valve 53 which is slidably and loosely mounted upon itsvalve stem 50. It will be noted that upon a movement of the valve stem 50 that the valve 53 will seat and cut off communication between the chambers 49 and 52 since the valve 53 is provided with a spring 54 which when the stem 50 is moved outwardly, is of greater resistance than thirty pounds, air pressure. The spring 54 is provided with a pin or keeper 55, said pin being mounted through the stem 50.

The valve29 is adjustably mounted upon lever is provided with a lug 62 adapted to.

register at desired times with the lug 58 upon the valve stem 50 and prevent the return of said valve stem at desired times.

The reasonfor providing an annular lug 58 is so that the valve stem 50 may have 1'0 tary movements, if desired, and at the same time the lugs 58 and 62 will be adapted to engage at all times.

In operation, reservoir tank 33 is filled with gasoline or partially filled with gasoline which is adapted to move downwardly by gravity into the auxiliary tank 23 through a valve port 63. The valve 64 will be pressed downwardly, thereby permitting the flow, but will 'be detained against-a large movement by means of the lugs 65. The valve 64, bein loosely mounted, is adapted to be closed by the action of compressed air as later described. The dotted line 66 indicates the normal level of the gasoline within the tank 33, the auxiliary tank, 23 and the bottom portion of the pipe 25, it being understood that the capacity of the auxiliary tank 23 is slightly larger than the capacity in gallons of the measuring device 13.

The operator, desiring that ten gallons of gasoline or any portion thereof be delivered to an automobile, may move the rod 41 upwardly and rest the finger 44 upon the heretofore described lug, thereby adjusting the over-flow pipe 40 so that when ten gallons of gasoline are admitted into the measuring device 13 that the overflow pipe will function to lead any excess amount of gasoline above the selected amount to the reser-' voir tank 33 through the pipe 32. The indicating scale 17 has no function if the scale 45 is used. The operator now passes the nozzle 31 of the hose 30 into the container tank of an automobile, not shown, and next pulls the handle 57 outwardly whereupon it will be detained in an outward position by means of the lug 62 engaging with the lug 58 of the stem 50. At this time the operator may leave the machinefor other duties since nomore and no less than ten gallons of gasoline, or the select d am u w be de ivered to the or use the time for filling the'radiator of the automobile with water, etc.

By the movement of the stem 50 air pressure from the chamber -18 is admitted to the pipe 22, said pressure immediately causin the valve 64 to close, said valve being locate between the tanks 23 and 33. Said air pressure will cause the gasoline or liquid within the tank 23 to be forced upwardly into the measuring device 13, said upward movement of gasoline will continue until its level has reached the top of the overflow pipe whereupon it will overflow into the pipe 40- and become automatically cut off by the following described devices.

The overflow liquid will descend the pi e 32 'and a portion thereof will lodge in t e bucket 34:; the increased weight thereby disengaging the lugs 58 and 62, whereupon the spring 59 causes the valve stem to have a return movement, said movement will close the valve 24 and cut off the air pressure and will automatically open the valve 53 whereby thepressure in the pipe 22 will be removed through the vent 51 and thereby permitting more or a new supply of gasoline to fill the auxiliary tank 23 from the tank 33. Said movement of the valve stem 50 will simultaneously with the above described operations, cause the valve 29 to open thereby establishing communication between the measuring device 13 and the automobile through 1 the nozzle 31; whereupon the liquid will flow from the measuring vessel 13 to the automobile until the'former becomes empty, the vent 16' permitting the latter described movement of the liquid, and the check valve 26 preventing flow to the tank 23.

I do not wish to be restricted to the size,

form and proportions of the various parts, and obviously changes could be made in the construction herein described without departing from the spirit of the invention, it

being only necessary that such changes fall within the scope of the appended claims. What is claimed is 1. A gasoline dispensing machine comprising a measuring vessel in communication with a source of theliquid supply and having an outlet for dispensing the gasoline and an 7 overflow, a source of compressed air in communication with the gasoline source for lifting the fuel to the measuring vessel, an adjustable measuring device associated with the overflow, valve means for cont-rolling the outlet from the measuring vessel, a second valve means for controlling the supply of compressed air to the gasoline source, and a single operating means connecting both said valve means for alternate opening and closing, and latch means for said operating means positioned to be released upon movement of the li uid through the overflow.

2. A liquid ispensing device comprising a measuring vessel in communication with a source of liquid supply and having an outlet source of liquid for delivering same to the measuring vessel, valve means for controlling the flow of the compressed medium to the source of liquid supply and the evacuation of such medium, other valve means for opening and closing the outlet, a common operating means for connecting both said valve means for conjoint operation and for alternate opening and closing, and latch means for holding the'operating means with the outlet valve closed until the overflow of liquid in the measuring vessel.

3. A liquid dispensing device comprising a measuring vessel in communication with a source of liquid supply and having an outlet and an overflow, a source of fluid medium under pressure in communication with the source of liquid for delivering same to the measuring vessel, valve means for controlling the flow of the compressed medium to the source and'the evacuation of such medium, other valve means for opening and closing the outlet, a commonoperating means for connecting both said valve means for closed, a bucket having a perforated bottom movably situated in the overflow, and coupled to said latch-, 'and yieldable means for holding the latch normally in the engaged position.

4. A liquid measuring and dispensing device comprising a measuring vessel in communication with a source of liquid supply and having an outlet and an overflow, a valve controlling the outlet, a valve stem fixedly coupled to said valve, :1 second valve fixedly coupled to the same valve stem, a source of compressed medium for-raising the liquid from the source to the measuring vessel under control of the second mentioned valve, a handle on said valve stem, latch means for holding the valve stem with the first valve closed and the second valve open, and means in the overflow coupled to release said latch means on the movement of liquid through the overflow. I

5. A liquid, dispensing device comprising a measuring vessel in communication with a source of liquid supply and having an outlet and an overflow, a valve casing in communication with'the outlet and having an outlet valve seat therein, an outlet valve adapted to close against said seat, a stem to which said valve is secured, a second valve seat in the casing, a second valve rigidly fixed to said stem for closing against said second valve seat, a source of compressed fluid in communication with the source of liquid under control of said second valve, and a conjoint operating means for said valve stem whereby the outlet valve will be closed when the second valve is open and whereby the outlet valve will beopened when the second mentioned valve is closed.

6. A liquid dispensing device comprising a measuring vessel in communication with a source of liquid suppl and having an outlet and an overflow, a va ve casing in communication with the overflow and having adjoining chambers with an outlet valve seat in one chamber and opposed valve'seats in the adjoinin an outlet valve for said outlet valve seat, a valve stem for said valve, a second valve rigidly secured to said valve stem for closing against one of the opposed seats, a source of compressed fluid in communication with the source of liquid supply under the control of the second valve, a slidable and yieldable third valve on the valve stem for closing against the other opposed seat and acting alternately with the second valve for evacuating the compressed fluid pressure when the second valve is closed, and a common operating means for said valve stem.

7. A liquid dispensing device comprising a measuring vessel in communication with a source of liquid supply and having an outlet and an overflow, a valve casing in communication with the overflow and having adjoining chambers with an outlet valve seat in one chamber and opposed valve seats in the adjoining chamber with a vent to atmosphere, an out et valve for said outlet valve seat, a valve stem for-said valve, a second valve rigidly secured to said valve stem for closing against one of the opposed seats, a source of compressed fluid in communication with the sourceof liquid supply under the control of the second valve, a third valve slidably mounted on said valve stem and adapted to close a ainst the other alternate seat only when't e second valve is open, and a coil spring carried fixedly at one end by said stem and valve at the other end. 7

In testimony whereof, I have afiixed my signature.

ROBERT E. COLLINS.

chamber with a vent to atmosphere,

ieldably bearing against the third-

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