US636537A - Pneumatic liquid-dispensing jar. - Google Patents

Description

Patented Nov. 7, |899. F. H. LIPPINGOTT & W. MOHLUK.

PNEUMATIC LIQUID DISPENSING JAR.

(No Model.) (Applation led Mar. 26, 189B.)

Witnesses. Inventors,

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Attorney.

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UNITED STAT-ns PATENT OFFICE.

FISHER H. LIPPINOOTT AND WILLIAM MORLOK, OF PHILADELPHIA, PENN- SYLVANIA, ASSIGNORS TO THE AMERICAN SODA FOUNTAIN COMPANY,

OF TRENTON, NEW JERSEY.

PNEUMATIC LIQUID-DISPENSING JAR.

SPECIFICATION forming part f Letters Patent N0. 636,537, dated November 7, 1899. Application filed March 26,1898. Serial-No. 675,249. (No model.)

.To all whom it may concern:

Beit known that we, FISHER H. LIPBIN- GOTT and WILLIAM MoRLoK, citizens of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Pneumatic Liquid-Dispensing Jars,

of which the following is la full, clear, and exact description, reference being had to the ac- Io companying drawings, of which-- 'Figure l is a vertical section through the middle of our jar; Fig. 2, a top plan View; and Fig. 3, a section on line a: w, Fig. 1.

The object of this invention is to provide, in connection with a suitable jar or the like for containing Syrups or other liquids, means whereby a desired quantity may be readily and conveniently forced out of the jar by airpressure.

The invention broadly considered, comprises the combination of a jar or other suitable vessel, atube, open at the topv and bottom, suspended therein,'a second tube also suspended in the jar and communicating with 2 5 the outer air, and means for compressing the body of air within the first-mentioned tube and forcing a quantity thereof out of the lower end of the latter into the jar, wherebyr a portion of the liquid contained in the jar will be 3o forced out of the same by way of the said second tube by pneumatic pressure, as hereinafter described.

The invention further comprises certain particular features or combinations herein- 3 5 after pointed out.

Referring to the accompanying drawings, which represent a form of our invention which we have put into practice, l designates asecured, in this instance being bent around and under a peripheral ange 3a of support 3, and is held in place by means of the cap 4, which is provided with a horizontally-extending offset 4a. When the cap is screwed down, the rubber is compressed between the offset and the edge of the top of the jar, as seen in Fig. l, thus making an air-tight joint. To the middle part or crown of the diaphragm is secured the lower end of a tubular rod or plunger 6, that is adapted to be reciprocated vertically in a guide-hole in cap 4. There is a knob 6a on the upper end of the plunger for convenience in operating the latter. One or more apertures 4b in the cap serve to admit air between the latter and the diaphragm.

i is a second tube, hereinafter termed the outlet-tube, suspended within the jar, and whose lower end extends near to the bottom of the jar, audits upper end projects through an air-tight aperture in the side of the upper 7o part of the jar and has connectedy thereto a nozzle 7 a, whose end is preferably downwardly turned, as seen.

Having thus described the construction of the invention, its mode of operation is as follows The cap 4 and adjuncts, as also the support 3 and tube 2, ,having been detached and removed from the jar, the latter is filled with the syrup or other liquid. These parts are then replaced. The liquid will obviously 8o stand at the same level in the two tubes and exterior thereto within the jar. When it is desired to draw some of the syrup from the jar, the nger or hand is placed upon the top ofthe tubular plunger 6, so as to close the same, and then the plunger is depressed. This carries down the diaphragm 5 and so compresses the underlying air, and consequently the syrup, or a portion thereof, will be forced out of the lower end of the tube 2 into the jar-space, and having no other outlet it escapes by way of the tube 7 and may be received in a cup or tumbler placed 4beneath the downturned end of the nozzle 7a. Upon now opening the upper end of the plunger 95 the liquid will come to a certain and the same height within the two tubes lower than it was before; but that within the jar exterior to said tubes will remain at substantially the same height that it was before the operation. This is because the upper ends of the said tubes are open to the air, while the upper part of the jar immediately below the support 3 is closed thereto. It being understood that the plunger and diaphragm have been rst brought to the elevated position either by drawing up the plunger or allowing it to be brought up by the elasticity of the diaphragm, if the plunger be given another downward stroke, with the hand or finger stopping the opening therein, as before, some of the liquid will again be expelled from tube 2 and escape from the nozzle of the outlettube, as before, and upon unsealing the end of the plunger the liquid will come to alevel within the two tubes lower than before, and the level exterior to the tubes will still remain substantially unchanged. Finally, at the next or a subsequent depression of the plunger and diaphragm all of the liquid within tube 2 will be forced out therefrom; but the quantity thus expelled may not suiiice to cause the liquid to rise high enough in tube 7. to escape; but, however, as the plunger descends, thus compressing the body of air within tube 2 above the liquid therein, a quantity of this compressed air will be forced out of the lower end of said tube and rise to the air-tight space above the top of the body of the liquid exterior to the two tubes and so establish a pressure upon that body of the liquid. This pressure may, however, not be sufficient to compel the outflow of the liquid from the tube 7. If not, the operation is repeated as may be necessary to obtain such pressure. At each repetition of this air-supplying operation the level of the liquid exterior to the tubes will fall, while that within the latter will relatively rise.

If the capacity of the space below the diaphragm and the top of tube 2 be greater than the capacity of the said tube, and the jar being full of the liquid, the tube would be emptied at the first stroke and (if it be desired to then expel so much of the liquid) a quantity of the air will also be forced out into the jar, and the same with each repetition of the operation.

By suitably operating the rod and depressing the diaphragm any desired quantity of the liquid may of course be forced out from the outlet-tube.

We remark,that although not essentiahit is preferred that the diameter or capacity of the tube 2 should be greater than that of the tube 7. In case the device is to be used with ordinary syrups, as for soda-water fountains, we would have tube 2 about double the capacity of tube 7, as in the construction shown in the drawings.

In order to prevent air forced from the tube 2 from, so to say, jumpinr7 across the interval between said tube and the tube 7, and thus escaping up through the latter, we usually form a vertical guard or projection 8 in .the bottom of the jar, extending above the line of the lower end of tube 7.

To secure the full effect of the rubber diaphragm 5 in its descent, we generally secure to the plunger G, immediately above the diaphragm, a plate 9 of suitable diameter with upturned periphery, as shown, whereby when the diaphragm is depressed it will take the cup-shaped form indicated by dotted lines in Fig. l.

IVe remark that We do not limit ourselves to the precise construction of the invention shown in the drawings or of any of the elements thereof. We have simply shown and described that form which we have found by practical experience to be a suitable and convenient one.

Having thus described our invention, we'

claim as new and desire to secure by Letters Patentl. In an apparatus for the purpose recited, the combination with a jar closed at its top, of an air-inlet tube suspended in said jar and extending to a point below the surface of the liquid therein, an independent liquid-outlet tube also arranged within the jar and also extending to a point below the surface of the liquid therein, a flexible diaphragm for forcing air. into said air-inlet tube, and a tubular plunger for operating said diaphragm, substantially as described.

2. In an apparatus for the purpose recited, the combination with a jar closed at its top, of an air-inlet tube suspended therein and communicating normally with the external air, said tube extending to a point below the surface of the liquid in the jar, an independent liquid-outlet tube also arranged within the jar and also extending to a point below the surface of the liquid therein, a flexibleV diaphragm for forcing the air out of the lower end of the air-inlet tube, and a tubular plunger for operating said diaphragm, substantially as described.

3. In an apparatus for the purpose recited, the combination with the jar, of the outlettube, the tube, 2, terminating below the level of the liquid in the jar, the air-tight support from which it is suspended, the flexible diaphragm mounted above said support, and the vertically-movable tubular plunger connected to said diaphragm; substantially as and for the purpose set forth.

4. In an apparatus for the purpose recited, the combination with the jar, closed at the top, the tube, suspended therein having its lower end adjacent to the bottom of said jar, and its upper end communicating normally with the external air; the outlet-tube having its lower end adjacent to the bottom of the jar, means for forcing the air out of the lower end of the first-mentioned tube, and the detlector for preventing escape of air into the outlettube, substantially as described.

5. The combination with a jar closed at its IOO IIO

top, of the independent air-inlet and liquidfixed our signatures this 16th day of March, outlet tubes Within said jar, a. flexible dia.- A. D. 1898.

phragm for forcing air through the air-inlet ,1 tube and through the liquid for accumulation O l T' at the upper portion of the jar, and a. tubular plunger for operating said diaphragm, sub- Witnesses: stantialiy as described. C. E. PARKER,

In testimony whereof We have hereunto af- WALTER C. PUSEY.

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