US1391104A - Fluid-actuated liquid-measuring pump - Google Patents

Description

J. R. GOULD.

FLUID ACTUATED LIQUID MEASURING PUMP.

APPLICATION FILED OCT. 20,19I6- Patented Sept. 20, 1921.

2 SHEETSSHEET 1- 3:

J. R. GOULD. FLUID ACTUATED LIQUID MEASURING PUMP. APPLICATION FILED OCT. 20, 1916. 1,391,104.

Patented Sept. 20, 1921.

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UNITED STATES PATENT" o ncE.

, :rosnrn n. GOULD, or wns'r srnmerfnnn, msssncnusm FLUID-ACTUATED LIQUID-MEASURING IELUMP.

' Specification of Letters Patent. Pa,t'e t 1 S t, 1921 Application filed October 20,1916. Serial No. 126,761.

To all whom it may concern: v

Be it known that I, Josnrn R. G001, a citizen of the United States, residing at West Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Fluid-Actuated Liquid-Measuring Pumps, of which thefollowing is a specification.

This invention relates to pumps of the kind used for measuring liquids, such asgasolene or the like,

and the purpose of the present invention is to provide an improved pump of this kind comprising novel means of operation and features of construction.

Liquid measuring pumps are now commonly used for measuring gasolene and other similar hydrocarbon fuels in garages and other similar places, but these pumps the operator for each gallon' of. gasolenenow in use are hand operated and a relatively large amount of work is required of pumped. It is desirable to provide a pump of this class which may be automatically 30.- I 5,1 taken advantage of this factby providing an'improved liquid measuring pump which -may perfect safety operated by an economical source of power and which will be simple in construction, so that the cost thereof will not be increased as compared with the hand operated pumps now in "use. In all public garages a comis always maintained for pressed air supply .the purpose of inflating tires, and I have.

the. like. Another object is to provide a operator pump of the class referred to in which the pumping operation is automatically performed by a suitable source' of power. Another object is to provide an automatically actuated liquid measuring pump in which thequantity of liquid to be discharged by I and the pump upoueach operation thereof may be varied as desired. Still another object is to provide a liquidmeasuring pump comprising improved features of constructlon arrangement, whereby the pump 1s simple and economical in construction and efficient in operation. I

These and other objects of the invention W111 appear more clearly from the following specification taken in connection with the accompanying drawin ments of the invention are illustrated.

In the drawings Figure l is a verti tainparts thereof in elevation Fig. 2 is an enlarged detail sectional view I.

of the valve for controlling the operation of the pump;

cal section through one .embodlment of my invention showing cerin which two embodi- Fig. 3 is a sectional view taken on the line-gift 33 of Fig. 1, looking in the direction of the arrows; I

'Flgs. 4 and 5 arevertical sections through another embodiment of my invention, 1n

which the successive operations of the pump are automatically controlled, certain parts of the device being shown in elevation; and Fig. 6 is a detail sectional view taken on the lines 6-6 of Figs. 4 and 5.

Referring to the embodiment of my in vention illustrated in Figs. 1, 2, and 3,'it 8 I will be seen that my improved pump comprises a metal base. 10 having an annular flan 6 10 which may be secured by screws, or t e like, to the floor 11. The upper part of the base 10 is provided with a annular flange 12 having formed in the upper surface thereof a circular groove 13, adapted. to

receiveand form a fluid tight connection with the lower end of the liquid cylinder 14,

which may be a brass tube, or the like. A

metal casing 15 seats upon the upper end ofthe cylinder, or tube 14, being provided with an annular groove 16 to receive the upper end of said tube and with an annular 16 which extends downwardly around the upper end of the tube. Suitable stay rods 17 are threaded into the casing 15 and extend downwardly at each side of the tube 14, and thence through suitable apertures in the annular flange 12 of the base.

The lower. projecting ends of these stay rods are engaged by the nuts 18, whereby the base, tube, and easing are held in assembled relation to form the liquid cylinder. A pisten 20 is mounted to reciprocate in the cylinder 14 and has secured to the upper side thereof a leather washer or packing gland 21, which forms a part thereof and which has its outer edges upturned to engage closely thewalls of the cylinder. Suitable apertures 22 are provided through the piston 20,-and the piston is operated by the. piston rod 23'- whlch extends upwardly which is seated in a suitable depression 29.

formed in the upper side of the base 10 and which threadedly engages the walls of an opening communicating with the conduit 26. The cap 27 of the vah'e 27 is normally in a closed position as shown in Fig. 1, but when the piston 20 moves upwardly the suction will open the valve cap 27 and permit the gasolene to be drawn upwardly into the chamber 28 below the piston.

upon the downward stroke of the piston the 1 Then leather washer or packing gland 21 will move upwardly at its outer edges away from the piston 20, thus permitting the gasolene to pass upwardly through the apertures 22 into the chamber 30 above the piston, it being understood that upon the downward stroke of the piston the valve 27 will close owing to its weight and the pressure of the liquid in the chamber 28.

For the purpose of operating the pumping apparatus described above, I have provided the novel device now to be explained. The upper part of the casing 15 is provided at opposite sides thereof with two upwardly extending bosses 32 which are apertured and which have rigidly mounted therein the upwardly extending parallel pipes or tubes 33, which pipes are closed at their upper ends by the caps 33* and which commun1cate with the chamber 31 of the casing 15, thereby providing air chambers which serve as cushions for the liquid moved upwardly by the pumping apparatus described above. A horizontally extending frame member or support 35, having suitable apertures 35 to be engaged by the tubes 33, is mounted adjacent the upper ends of said tubes, being .secured thereto by bolts 36, and a similar frame member or support 37 is secured to the tubes 33 at a suitable point between the casing 15 and the frame member 35 by means of other bolts 36. The projecting ends of these frame members are secured in rigid relation to each other by means of the stay rods 38. A compressed air cylinder 40 is mounted between the frame members35 and 37 the ends of the cylinder being seated in suitable depressions formed in said frame members, so that fluid tight connections are formed. A piston 41 is mounted to reciprocate in the cylinder 40 being provided with suitable packing washers 41 of leather, or the like, and this piston is connected to the upper end of the piston rod 23 previously described, which extends upwardly between the tubes 33 through a suitable packing box 42 carried by the lower frame member 37, and thence upwardly into the cylinder 40.

It will be seen that the operation of the piston 41 in the cylinder 40 will operate to actuate the pumping mechanism previously described, and for this purpose I have prov vided means for introducing a compressed fluid supply into the cylinder 40 above and below the piston 41, alternately, thereby effecting the reciprocation ofthe iston rod and the operation of the pump. he supply of compressed fluid, such as the compressed air supply normally found in garages, is introduced to the pumping apparatus through a suitable pipe 44 which leads to the valve 45, from which a pipe 46 extends upwardly tothe upper frame member 35,

and another oppositely disposed pipe 47 extends downwardly to the lower frame member 37. A suitable duct 48 leads through the upper frame member 35 from the outlet of the pipe 46 to the upper end of the cylinder 40, and a substantially similar duct 49 leads through the lower frame member 37 to the lower end of the cylinder 40.. Both of these ducts have relatively large areas where they communicate with the cylinder, as shown in the drawings; The

valve 45 is operated by a handle 45 and it.

comprises the valve member 45 which may be moved into different positions to connect the compressed fluid supply with the pipe 46 or with the pipe 47. lVhen the valve is in the position shown in Fig. 2 of the drawings. the compressed fluid supply will be connected to the pipe 47 and thence to the lower end of the cylinder 40 so that an upward stroke of the piston 41 will be produced, and at the same time the fluid in the cylinder 40 above the piston 41 will be exhausted to the atmosphere through the ipe 46, valve 45, and the vent opening 45 wli is provided in the valve casing. When the valve is turned to a diametrically opposite position such as is shown in Fig. 1 of the drawings, the compressed fluid supply willbe connected through the pipe 46 to the upper end of the cylinder to produce a downward stroke, and the pipe47 will be connected to the vent opening 45 to permit the fluid below the cylinder 41 to .be exhausted to the atmosphere. It will be seen, therefore, valve 45, the piston 41 may be 'caused to move alternately in opposite directions and thus effect the continuous operation of the pumping mechanism previously described.

The apparatus, as above described, is constructed so that a complete upward stroke of the piston 20 of the pump will carry with it some suitable unit of gasolene, such as a gallon, and the-liquid'so moved by the piston is discharged through a suitable outlet pipe 50, which, in this instance, is connected to one of the tubes 33, and which has secured to the that by manually operating the.

ich

' stroke. It will be seen that by varying this tially constant 4.5

outer end thereof the usual anti-drip nozzle or valve 51, having a handle 51" by which it is operated, and a suitable projection 51 adapted to support a suitable vessel for receiving the liquid. It will be understood, of course, that the tube 50 may be either a rigid pipe or a flexible hose of, any suitable length.

In order to regulate the limit of the complete upward stroke of the pump, I have provided an adjusting screw or member 52 which threadedly engages a boss 53 formed on the upper frame member 35 and which extends downwardly into the upper end of the cylinder 40, where its end is adapted to engage the upper surface of the piston .41 when the latter is at the upper limit of its.

upper limit the amount of liquid discharged through the valve 51 may be varied to secure the desired unit of measure, such as a gallon. Upon each upward stroke of the piston 20 a part of the liquid will enter the tubes 33 and thus prevent any shock upon the parts of the apparatus, and upon the downward stroke of p1ston 20 this liquid which does not flow out of the nozzle 51, will flow back into the chamber 30 where it commingles with a new supply of liquid which passes upwardly through the openings 22 of the valve 20 upon the downward stroke of the latter. It will be understood that this residue of liquid which remains in the pump" above the piston at the end of each upward stroke, is a quantity in addition to the full gallon which is discharged by the pump, the parts of the apparatus being so proportioned and adjusted that a full gallon will be discharged by the complete stroke of the piston regardless of any residue which enters the tubes 33 or which remains in other parts of the pump. In the normal operation of the, pump this residue will besubstanand will not interfere with the. accuracy of the pump as a measuring device. i v

In order to provide means for measuring other quantities of liquid, suchas fractional parts of a gallon, I have provided a fixed threaded rod 54 which is rigidly secured to the bosses 55 carried by the upper part of the casing 15 and the lower part of the frame member Threaded on this rod 54 are a plurality of stop members 56, 57, and 58, the projectingiarms of which are adapted to be swung into alinement with a suitable collar or stop 59 fixed on the piston rod 23 by means of a set screw 60. The stop members 56, 57, and 58 may be secured in adjusted position on the rod 54 by means of other set screws 61, or, if desired, the projecting arms of these stop members may themselves be set screws for securing the stop members in adjusted positions. When the stop member 58 is swung into the position shown in Fig. 1

' stop member 56 may be arranged to control the operation of the pump so' that it will discharge some other quantity of ii uid, such as one quarter of a gallon, per stro e.

In the operation of the above device, the operator merely manipulates the valve 45 at the upper and lower limits of the'stroke of the pump in order to produce the successive operations of'the pump, and at the same time he counts the upward strokes to determine- '-the number of gallons of liquid discharged,

or, if desired, some automatic counting means may be attached for the purpose of counting the upward strokes.

The embodiment of my invention illustrated in Figs. 4, 5, and 6 is, in most respects, similar to the form described above in so far as the construction of the pump is concerned. However in this construction I have substituted a modified form of intake valve 60 for the valve 27 previously de-' scribed, and, in this instance, I have shown the outlet pipe 50 as connected-to the chamber 31 of the casing 15 instead of being con-' nected to one of the pipes or tubes 33. In

this construction the frame members 61 .1

and 62 correspond'to the frame members 35 and 37 of the preceding form of the invention, and they are secured to. the tubes 33 by means .of bolts 63. The piston 41 reciprocates in a cylinder 64 corresponding to the cylinder 40 of the preceding form of the invention, this cylinder being provided with annular flanges 64 which are secured to the frame members 61 and 62, these frame members serving as cylinder heads for closing the ends of the cylinder. The piston rod 23 leads through a suitable stuffing box 65 into the cylinder 64 and is connected to the piston 41 in the manner previously descrlbed. Instead of governing the successive operations of the pump by a manually controlled means,

to slide upon the valve seat 67 formed on the enlarged wall of the cylinder 64, being contained within a suitable chest or chamber 68 which is attached to the cylinder and which has communicating therewith a pipe 69 leading from alsupply of compressed fluid such as the usual compressed air supply. When the valve is in its lowermost I have provided in this instance a slide valve 66 which is mounted position as-shown in Fig. 4 of the drawings,

the compressed air will pass from the valve chest 68 through the duct 7 0 1n the wall of the cylinder to the upper end of the cylin- 'der, thereby producing adownward stroke vided the valve rod of the piston 41. At the same time, the fluid in the cylinder 64: below the piston 40 will pass outwardly through the duct 71 to the chamber 66 of the slide valve, and thence to the exhaust port 72 which leads to the atmosphere through the wall of the cylinder. When the slide valve is moved upwardly, the fluid above the piston 41 will be exhausted through the duct 70 and the compressed fluid will pass from the valve chest 68 through the duct- 71 to the lower end of the cylinder 40. I

' For the purpose of causing the automatic operation of the slide valve 66, I have pro- 74 which is slidably mounted in a suitable stufling ried by the valve chest 68, and which has its lower end mounted in a suitable bearing 76 carried by the sup orting arms 77 which have their enlarge ends apertured to be engaged by the tubes 33, to which they are secured by the set screws 7 8.. It will be seen that these arms '77 are angularly disposed in order to clear the piston rod 23 and to support the bearing member 76 in proper position. These arms 77 are further provided bet-ween their extremities with upwardly andinwardly extending arms 79 which serve as supports for the valve control lever 80, which is pivotally mounted thereon at 81. One end 80 of this lever is mounted between the collars 82 which are adjustably secured to the valve rod 74 by set screws, or the like, and the ot-her'end 80 of the lever occupies a position adjacent the piston rod 23 where itis adapted to be engaged by the collars 84c and 85, which are screws 86. hen the pistons 20 and 41' have reached their lower limits of travel, the collar 81 will engage the end 80 of the lever 80 and thus move the slide valve 66 upwardly. thereby connecting the upper end of the cylinder 64 to the exhaust port 7 and connecting the lower end of the cylin er 64 to the valve chest 68 so that the compressed fluid supply will then produce an upward stroke of the piston 41 and a corresponding upward stroke of the piston 20, which will effect the discharge of apredetermined quantity of liquid from the nozzle 51.

When the upper limit of this stroke is reached, the collar 85 will engage the end 80 of the lever 80, thereby moving the slide valve 66 downwardly and causing the lower end of the cylinder 61 to be connected to the exhaust port and the upper end of the cylinder to be connected to the compressed air supply. By means of this construction, the operation of the pump is carried on automatically after the compressed fluid has been admitted tothe valve chest 68, and it is only necessary to count the upward strokes of the piston to determine the amount of liquid discharged by the pump. 'hen it is debox 75 car- I pump cylinder, secured to the piston rod by means of the set sired to vary the amount of, liquid discharged upon each stroke of the pump, the positions of the collars 84 and 85 may be varied on the piston rod 23 to regulate the points at which the valve 66 is operated by the lever 80. v

Although I have shown and described certain embodiments of my invention for purposes of illustration, it will be understood that my invention is not limited to these precise forms and that it may be embodied in various diflerent constructions without departing from the scope thereof as defined in the appended claims.

I claim v 1. In combination, a liquid cylinder and a compressed fluid cylinder mounted in axial alinement with each other, a piston mounted in said liquid cylinder, an inlet valve carried by the piston, a conduit leading to the space on the inlet side of said piston, a second inlet valve leading from said conduit cylinder on each side of said second named piston alternately, a stop member carried by said piston rod, and an adjustable stop arm mounted adjacent said piston rod to engage said stop member and thereby regulate the length of stroke of said pistons.

2. In liquid measuring and pumping mechanism, a. pump cylinder and a compressed fluid cylinder mounted in alinement with each other, a piston mounted in said an inlet valve carried by said piston, a conduit leading to the space in said pump cylinder on the inlet side of said piston, a second inlet valve leading from the conduit to said space, a second piston mounted 1n said compressed fluid cylinder, a pis ton rod connecting said pistons, means to admit compressed fluid to said compressed.

fluid cylinder on each side of said secondnamed piston alternately, a discharge outlet leading from the space in said pump cylinder on the outlet side of said first-named piston, and an air chamber to cushion the liquid in said last-mentioned space in said pump cylinder.

3. In liquid measuring and pumping mechanism, abase adapted to',rest upon asupport and having a duct leading therethrough, a cylinder mounted vertically 'on said base and communicating with said duct, an inlet valve mounted in said base to control the passage of liquid from said duct to said cylinder, a casing mounted upon the upper'end of said cylinder and having a casing between said vertical members, a compressed fluid cylinder carried by said vertical members, a second piston connected to said piston rod and mounted in said compressed fluid cylinder, and means to admit compressed fluid to said compressed fluid cylinder on opposite sides of said second-named piston.

4. In combination, a base adapted to rest upon a sup ort and having a duct leading therethrougli, liquid measuring and dispensing means inc uding a cylinder mounted vertically on said base and communicating with said duct, an inlet valve mounted in said base to control the passage of liquid from said duct to said cylinder, a casing mounted upon the upper end of said cylinder and having a chamber communicating therewith, a pair of vertically extending parallel members secured to said casing, a

piston mounted in said cylinder, a piston rod connected to said piston and extending upwardly through said casing between said vertical members, a compressed fluid cylinder carried by said vertical members, a second piston connected to said piston rod and mounted in said compressed fluid cylinder,

means to admit compressed fluid to said compressed fluid cylinder on opposite sides of said second-named piston, and a discharge opening communicating with lthe chamber of said casing, said vertically extending air cushions for the liquid discharged through the discharge opening.

5. In combination, a baseadapted to rest upon a support, a liquid pumping and measuring means carried by said base, a casing mounted at the upper end of said pumping members being hollow to provide 5 der, means to admit compressed fluid to said compressed fluid cylinder on opposite sides of said piston, a screw-threaded member fixed on said casing and extending upwardly therefrom, adjustable stop arms engaging said screw-threaded member, and a stop member mounted on said piston rod to be engaged by one of said stop arms to regulatethe length of strokeof said piston.

6. A pump ofthe class described, comprising a gasolene cylinder, a piston therein, a discharge opening leading from said cylinder, a plurality of elongated hollow members extending upwardly from said cylinder and communicating therewith to provide air pockets for the liquid discharged through said opening when said pump is 0perated, a compressed fluid cylinder. supported by said hollow members above said gasolene cylinder, a piston mounted in said compressed fluid cylinder, and a piston rod connecting both said pistons whereby said pump is operated upon actuation offsaid fluid piston.

In testimony whereof, I have subscribed my name. V

JOSEPH R. GOULD.

Witnesses: l

J. G. DUNNING, HENRY L. DAVIS.

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