US2190634A - Draft tube for beer apparatus - Google Patents

Description

Feb. 13, 1940. D. T. LEONE ET AL `*DRAFT TUBE FOR BEER APPARATUS Filednec. 5, 1939' i comprises an outer tube Patented Feb.' 13, 1940 j UNITED d sTArEs TENT y orties 2,190,634 omer 'roes Fon nenn APPARATUS Daniel T. Leone, Cannelle Pagano, and Anthony Cosentino, Newburgh, N. Y.

Application December 5, 1939,` Serial No. 307,688 i claims; loi. 22e- 3l velocity with respect to successively .decreased steps of velocity so that when the beer is delivered to affaucet for discharge, the same` isunder a predetermined lpressure to effect theforrnation of the desired amount of 'oarn appearingon the surface of the beer'discharg-cd into 'a container.

With the above and-otherobjects in view that Vwill become apparent as the nature ofthe in vention is better understood, the same consists in generalof certain .novel` details of constructionv and: `combinatioi'l of partshereinafter more fully described, illustrated in the accompanying drawing and specifically claimed. l

In the accompanyingv drawing: Figure l is a side elevational View of a` draft tir-.be for beer apparatus constructedin accord--v ance with the presentlinvention, Y p

Figure 2 is an enlarged fragmentary `longi-` tudinal. '.ectional view taken .on line 2-2 of Figure l, showing a series of concentrically arranged pipes within the tube of gradually increased diameters ander" successive lengths with a removable cap at the lower end of the tube' to `iacilitate cleaning thereof, and

Figure 8 is a fragmentary longitudinal sectional view, similar lao-Figure 2, showing the cap .formed integral with the plug atthe inner end of the the entire contents of the leeg as well as the orig.: o

When the valve is opened tube thatcarries the conical pipes. ,g y

Referring more in detail tothe accompanying drawing, the draft tube for beer-apparatus having a valve casing upon itsupper end provided with a threaded connection 'igior attach-` ment ci a pipe or conduit that leads to the dispausing faucet, the valve casing` 6 having a valveA thereincontrolling dow through the tube and operated by means of the valve handle 8. l

The .lower end of the tube tis internally threaded as shown in Figure 2 for threaded en-` gagement with a plug l that carries a depending marginal harige lil defining al bottom pocket ll that is closed by a removable threaded cap` i2. The plug ilv has an axial bore i3 vltherethrough of the desired length and the4 outer side of said plug il is preferably provided with annularly reduced stepped portions lil` and it respectively defining annular shoulders lll and il. The outer side of the plusr S below the .shoulder 'it is annularly reduced as shown in 'Figure 3 and threaded for the threaded reception of the lower end Aof the tube 5.`

A pipe iii is secured at itslower lend within the upper-endet the bore S3 in the plug 49, a

second inclosing conical pipe 'lo surrounding the iunerpipe i3 having threaded engagement at its tower end with the outer faceof the annularly reduced portion l5 of theplug, `while a. third inclosing pipe 2li surrounding the' pipe i9 has threaded engagement atv its lower end with the annularly .reduced portion it or said plug. .The lower ends of the pipes lll and 2G `are preferably lnoved into engagement withlthe abutment shoul-,l dersl'i and lil respectively. It will lbe observed p that the lengths of the three pipes lll, I@ and 2l! are successively stepped, the pipe lll being longer than the pipe l 8, while the thepipe` lil. H

A beer inlet opening 2l for the lower end of l the tube ii is formed in ythe annular wall lil` depending `from the plug Sl above the closure cap l2. and diametricallyopposite said inlet opening 2l there is provided4 an upwardly inclined relatively smaller beer jet. opening 22.A i

The draft tube t is mounted Within a beer keg in the usual manner and after assembly with other beer apparatus appurtenances and `it haw` ing been understood that the beer in the barrel l is placed under ydesired pressure, it having been found that `when the pressure of 40 pounds s maintained, the beer can beldelvered atthedis-A` charge faucet at the desired pressure and with the desired amount oi foam as well as maintaining the quality throughout the dispensation of inal taste thereof. by the handle il, pressure in the rkeg forces the beer intotthe tube through the inlet opening 2l and also through the jet opening til, the latter functioning as'- a venturi to increase Velocity, agitato the beer and initially start thefoameproducingstep. The beer is then delivered` under pressure upwardly through the inner pipe l and pipe 2li is longer than when under said pressure of pounds, the rela-' tively small pipe i8 functions as a venturi with the beer flowing through at an increased` velocity,

ythe beerwhen reaching the upper end it of the tube spreading laterally into a larger volume inthe surrounding pipe i9 with the Velocitythereof f reduced, the same reaches the upper end lee of said pipe i9. The beer at this point then discharges into the outer pipe where the same spreads to larger volume and at reduced velocity to the upper end 20a of the pipe 2li, the beer thereafter entering the outer tube 5 fory delivery by Way of the valve to the discharge faucet. The several pipe sections i8, IS and 2E! functioning as venturis produce an initial increase in Velocity of the beer and a step-by-step decrease in such velocity, the reduction in the speed of iiow resulting in the building up of foam-producing action y so that when the beer is delivered to the discharge faucet under the original i0 pound pressure in the keg, the same will be discharged into a receptacle or container with the proper amount of foam thereon.

In Figure 2 oi the drawing, the cap I2 at the lower end of the plug 9 is illustrated as being de- 'tachably engaged therewith to facilitate cleaning of the tube, but in some instances it may be desirablek to form the tube integral with the plug and as shown in Figure 3, the cap l2a is integral with the plug 9a, the outer tube and concentric pipes otherwise corresponding to the form of invention shown in Figure 2 and being identied by similar reference characters. While it is not desired to limit the tube l5 and the pipes E8, I9 and 20 as to proportions, i. e., diameters and lengths, it has been found that the device works with great eiciency when the center pipe I3 has a 1% outside diameter and being 19"y long, the pipe I9 having an'outside diameter of and being 23" long, while the outer pipe has an outside diametero and is 27" long. It is also to be understoodfthat the pipes and tube may be constructed of any material desired, it being found that chromium plated brass pipes produce lexcellent results. Theow of beer from a faucet may be controlled as to volume by the number and size of pipes installed within the draft While there are hereinshown and described the preferred embodiments of the invention,

it is to be understood that minor changes may be made in the details of construction, such as will fall within the scope of the invention as claimed.

We claim:

1. In a drafttube for beer apparatus, a tube having a control valve at its upper end, a series of concentric pipes in the lower end of the tube of gradually increasing' lengths outwardly with the inner pipe only communicating with the lower end of the tube and the lower end of the tube having beer inlet openings therein.

2. A draft tube as in claim l, wherein a plug is mounted in the lower end of the tube for the support of the pipes and said plug having a bore therethrough communicating with the inner pipe.

3. A draft tube as in claim 1, wherein one ofk said openings is of a restricted jet type.

4. A` draft tube as in claim l, wherein a plug is mounted in the lower end of the tube for the support of the pipes and said plug having a bore therethrough communicating with the inner pipe and one of said beer-inlet openings being of a restricted jet type.

5. A draft tube as in claim 1., wherein a plug is mounted in thelower end of the tube with annularly reduced stepped portions providing shoulders for the support of said pipes.

6. A draft tube as in claim l, wherein a plug is mounted in the lower end of the tube with annularly reduced stepped portions providing velocity in an upward direction of beer flowingl through said tube.

. DAl\l'l`.rllLy T. LEONE.

CARMELLO PAGANO. ANTHONY COSENTINO.

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