US968491A - Liquid measuring and dispensing apparatus. - Google Patents

Description

E. E. MURPHYI LIQUID MEASURING AND DISPENSING APPARATUS:

APPLICATION FILED JULY 3, 1907.

Patented Aug. 23,1910.

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UNI-E fl EDWARD E. MURPHY, OF WINCHESTER, MASSACHUSETTS.

LIQUID MEASURING AND DISPENSING APPARATUS.

Specification of Letters Patent.

Patented Aug. 23, 1910.

Application filed July 3, 1907. Serial No. 381,963.

T 0 all whom it may concern.

Be it known that I, EDWARD E. MURPHY, of Winchester, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Liquid Measuring and Dispensing Apparatus, of which the following is a specification.

This invention relates to apparatus for dispensing syrups and other liquids, particularly in small measured charges, the apparatus being adapted, for example, for drawing from a tank or receptacle a suitable quantity of syrup for a glass of soda water.

The invention has for its object to provide a simple and efiective measuring syrup lift adapted to be conveniently engaged with and removed from the casing which contains the tank from which the syrup is to be drawn, and of such construction as to secure efiiciency of operation, durability, and freedom from leakage of the syrup through any of the joints between the external parts of the device.

The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,-Figure 1 rep resents a top plan view of a syrup measuring lift embodying my invention and a portion of the casing with which the head of said lift is engaged. Fig. 2 represents a section on line 2-2 of Fig. 1. Fig. 2 represents a view similar to a portion of Fig. 2. Fig. 3 represents a top plan view of the port-ion of the casing shown in Fig. 1, the measuring lift being removed. Fig. 4 represents a section on the line H of Fig. 3. Fig. 5 represents a top plan view showing the head portion of the measuring lift, the parts being broken away.

The same letters of reference indicate the same parts in all the figures.

In the drawings, 12 represents a head, which is adapted to be with the top portion 13 of a casing, whic contains a jar or tank 1% holding the syrup or other liquid to be dispensed in measured charges by the apparatus. The casing portion 13 is provided with an opening 15, conforming in contour to the head 12, the latter being adapted to serve as a closure or cover for said opening. The casing portion 13 and the head 12 are provided with interlocking coupling members which provide detachably engaged for a quick engagement and separation of the head with and from the casing. The coupling members on the casing comprise a vertical lip 16 at one end of the opening 15, and a horizontal lip 17 at the opposite end of said opening, the lip 17 overhanging the opening as clearly shown in Figs. 3 and 1. The coupling members on the head 12 are the edges of two elongated recesses 18, 19, formed in the end portions of the head, said recesses being formed to receive the lip 16, while the recess 19 is formed to receive the'neck 20 which connects the overhanging lip 17 with the casing. In engaging the head with the casing, the part of the head,

containing the recess 19, is first inserted under the lip 17 until the edges of the recess 19 come to a bearing on the inner side and ends of the neck 20. The other end of the head is then lowered until the recess 18 receives the lip 16. The area of the head is somewhat greater than that of the opening so that the margin of the head rests upon the upper side of the casing around the opening.

The head is provided at its under side with a downwardly extending projection 21 and on its upper side with an upwardly extending projection or guide member 22 for the piston rod hereinafter described.

23 represents a fixed inverted cup or cylinder which is located below the head and is rigidly connected therewith by a tubular shank 2t, which constitutes a conduit connecting the interior of the cup 23 with a passage 25 extending through the head and its extension 21, said passage terminating in an outwardly projecting outlet nozzle 27. hen the head 12 is engaged, as described, with the casing top 13, the shank 2s and cup 23 project downwardly from the head into the casing and into a syrup tank lt located within the casing, so that the cup is adapted to receive a charge of liquid from the tank.

23 represents a piston having a close sliding fit in the cup 23, said piston being provided with one or more inlet ports 29, through which liquid may pass from the tank into the interior of the cup.

30 represents a piston rod, the upper end portion 31 of which is preferably enlarged and is movable in the guide member 22, the latter being tubular. The rod 30 has a slid,- ing fit in a central orifice, formed in the piston 2S, and is adapted to have a limited independent endwise movement in the piston.

311 represents a head affixed to the rod 30 below the piston, and 32 represents a collar or projection atlixed to the rod above the piston, the said head and collar being separated by a space of greater width than the thickness of the portion of the piston through which the rod passes, so that the rod has a limited endwise play suiiicient to depress the head 311 below the piston, thus uncovering the ports 29, as shown in Fig. 2, and to hold the head 311 in contact with the piston, thus closing the ports 29, as shown in Fig. 2 It will be seen, therefore, that, when the piston rod is moved downwardly, the head 311 is separated from the piston, the collar 32 bearing on the hub portion of the piston and moving the latter downwardly until the limit of the downward movement of the rod is reached, the parts being then in the position shown in Fig. 2, with the piston 28 at a predetermined position in the cup so that a predetermined quantity of liquid is discharged by the up ward movement of the piston. The ports 29 are therefore left open until the piston rod is again raised so that the liquid enters the cup through the ports 29.

When it is desired to eject the charge of liquid, the piston rod is raised independently of the piston until the head 311 comes to a bearing on the piston, the latter being then raised with the rod and ejecting liquid from the cup through the tubular shank, the outlet passage 25 and the outlet nozzle 27.

The piston rod is operated by means of a lever 33, one end of which is pivoted at 34 to a link 35, the latter being pivoted at 36 to an ear on the head 12. The lever extends through the slotted upper end of the enlargement 31 of the piston rod and is connected therewith by a pivot pin or screw 37. The outer end of the lever projects over the outlet nozzle 27, and is provided with a suitable handle The guide member 22 is provided with upwardly projecting extensions 39, which are at opposite sides of the lever and guide the latter when it is oscillated to operate the piston rod. The enlargement 31 of the piston rod is preferably provided with a plurality of holes 10 each adapted to receive the pivot screw 37, provision being thus made for adjusting the height of the piston rod and piston when the latter are in their lowestposition, and thus varying the quantity of liquid discharged.

It will be observed that the overhanging lip 17 engages the front end of the head 12 or the end immediately under the handle end of the operating lever, the said lip being adapted to hold down the front end of the head and resist any tendency of the head to tip upwardly when upward and backward pressure is exerted on the head by the upward movement of the lever 33 in lifting the piston rod. At the same time,

the lip 16 engaging the coupling recess 18 immediately under the rear or pivoted end of the operating lever, prevents the head from sliding backward under the same pres sure.

The lip 16 and recess 18 comprise a pair of coupling members at the inner or rear end of the lever 33, while the lip 17 and recess 19 comprise a pair of coupling members at the handle end of the lever. The two pairs of coupling members constitute an extremely simple and effective means for interlocking the head with the casing against displacement from pressure exerted on the lever, and for permitting the quick attachment and removal of the head, there being no extended reciprocal bearing surfaces on the head and casing, such as would be formed by a depending flange on the head and a seat on the casing for said flange, to cause resistance to the removal of the head either by friction or by the cementing of one surface to the other by the crystallization of saccharin matter.

The projection 21. of the head 12 is provided with a lower guide member 11 located below the guide member 22 and having an orifice in which the piston rod 30 has a sliding fit. The passage 25, which connects the shank 24 with the outlet nozzle 27, is offset in the projection 21, a portion of said passage extending horizontally under the guide member -11, which constitutes the upper wall of the horizontal portion of the passage. The liquid, forced upwardly through the shank and through the passage 25 by the lifting of the piston, impinges against the under side of the guide 11 and is deflected thereby. The pressure of the liquid against the guide -11 is liable to cause some leakage of the liquid between the piston rod and the wall of the opening in the guide 41 through which the piston rod passes. To prevent the liquid from thus escaping above the head, I provide the head with a leakage chamber 12 located between the guides 41 and 22, said chamber surrounding a portion of the enlarged part 31 of the piston rod and being of sutlicient capacity to accumulate such liquid as leaks through the guide member 41, the said liquid subsequently returning or leaking back into the shank while the apparatus is at rest. Provision is thus made for preventing leaking of the liquid between the upper guide 22 and the portion of the piston rod located therein.

I claim 1. A liquid measuring lift comprising an inverted cup, a tubular shank extending upwardly therefrom, a head afiixed to the shank and adapted for engagement with a supporting casing, the said head having upper and lower guides in alinement with the shank, a leakage chamber between said guides, and an outlet passage in alinement at its lower end with the shank, said passage being ofiset under the lower guide and the leakage chamber and terminating in an outwardly projecting outlet nozzle, a piston movable in the inverted cup, a rod engaged with the piston and extending upwardly through the said shank, guides and leakage chamber, and means supported by the head for operating said rod and piston, means being provided for admitting liquid to the cup when the piston and rod are depressed and for entrapping and raising the liquid when the piston is raised.

2. In a liquid measuring lift, in combination, a head adapted to be detachably engaged with a supporting casing, a tubular shank extending downwardly from the head, an inverted measuring cup at the lower end of the shank, a piston frictionally engaged with and movable in the cup, the upward movement of the piston being limited by the cup, and provided with a central orifice and with an inlet port, a piston rod extending through the head, shank, and piston, and having a head below the piston adapted to cover the inlet port and impart movement to the piston, and also having a piston-engaging shoulder above the piston, the rod having a limited endwise movement inde pendently of the piston, whereby when the rod is depressed, its shoulder is caused to depress the piston and its head is separated from the piston to uncover the port, and when the rod is raised, the said head is caused to close said port and raise the piston, and means for limiting the independent downward movement of the rod and head, whereby the said shoulder is caused to leave the piston in a predetermined position in the cup when the rod is fully depressed.

3. In a liquid measuring lift, in combination, a head adapted to be detachably engaged with a supporting casing, a tubular shank extending downwardly from the head, an inverted measuring cup at the lower end of the shank, a piston frictionally engaged with and movable in the cup, the upward movement of the piston being limited by the cup, and provided with a central orifice and with an inlet port, a piston rod extending through the head, shank, and piston, and having a head below the piston adapted to cover the inlet port and impart movement to the piston, and also having a piston-engaging shoulder above the piston, the rod having a limited endwise movement independently of the piston, whereby when the rod is depressed, its shoulder is caused to depress the piston and its head is separated from the piston to uncover the port, and when the rod is raised, the said head is caused to close said port and raise the piston, and means for limiting the independent downward movement of the rod and head, whereby the said shoulder is caused to leave the piston in a predetermined position in the cup when the rod is fully depressed, said means having provisions for varying the downward movement of the rod and the quantity of liquid discharged by the upward movement of the piston.

4. In an apparatus of the character stated, a casing having an opening, a head formed to cover said opening, and provided with a guide member, a piston rod movable in said member, an operating lever having a handle at one end and a loose connection at its other end with the head, the lever being connected at an intermediate point with the piston rod, an inverted cup connected by a tubular shank with the head, a piston in said cup engaged with the piston rod, and two pairs of coupling members, one under the inner end of the lever, and the other under the handle end, one pair being adapted to resist endwise movement of the head, while the other is adapted to resist upward movement of the head.

In testimony whereof I have affixed my signature, in presence of two witnesses.

EDWARD E. MURPHY. Witnesses:

G. F. BROWN, P. W. Pnzzn'r'rr.

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