US54904A - Improved bung for beer-casks - Google Patents

Description

UNITED STATES PATENT OFFICE.'

IMPRovED BUNG FOR BEI-:R-GASKS.`

Specification forming part of Letters Patent No. 541,904, dated May 22, 1866.

To all whom 'it may concern:

Be it known that I, MICHAEL HEY, of the city of Philadelphia, in the State ot' Pennsylvania, have invented a new and useful Improvement in Ventilating Beer-Brings; and I do hereby declare that the following is a full, clear, and exact description-ot' the construc tion and operation of the same, reference being had to the accompanying drawings, making a part of this speciiication, in which- Figure l represents the inner side ot' a vertical half-section of a Ventilating beer-bung; Fig. 2, a transverse or horizontal section of the same below the dotted line :r y of Fig. l, and Fig. 3 my improved valve-disk, like letters of reference indicating the same parts when in both figures.

'lhe object of my improvement is to ai'ord a valve for a seltventin g beenbarrel bung that will not be liable to become fast or obstructed in its operation from the adhesive or gummy nature ot' the beer, which may at any time come into direct contact with it.

My invention consists in giving to either the face of the valve-disk or its seat a sharp edge bearin g, substantial] y as hereinafter described and set forth.

In the drawings, A B represent a self-venting beer-barrel bung provided with the usual inlet-openings waz, and D the valve.

The bung A B is cast of brass or other suitable metal and provided with a valve-seat in its upper end, the opening to which is closed airtight by means of a screw-plug, a3.

- The part of the inletopening which is below the valve D communicates at its lower end with the external air through a diametrical opening, a4, in the neck of the bung. In Fig. 2 this opening is :indicated by the dotted lines c o. The space which is above the valve-seat communicates with the remaining portion, ct of the inlet.

The valve D, as shown in Figs. 1 and 2, consists of a loose disk of metal, a5, and the seat upon which the said disk rests has a raised annular portion, as, Witha sharp edge upward, surrounding the inlet-opening a' thereat, and the space above the disk a5 is made sufficiently high to allow the said disk to be raised by the passage of the air from beneath it upward, but yet low enough to prevent the said disk from being turned over or out of its place thereby.

The seat of the valve D should be made dat, and the sharp annular edge a6 be formed on the under side of the disk, as shown in Fig. 3, thus avoiding the annular groove in the seat, (shown in Figs. 1 and 2,) which becomes filled with gummy matter and causes the loose disk to stick.

It will be seen that as the contact portions of the valve D consist of a plain dat seat and a sharp annular edge on a light loose disk only, there is not suflicient contact-surface to permit adhesion, so as to prevent the passage of external air into the barrel as the beer is drawn out from time to time, and yet that it will e'ectually prevent the escape through it of any carbonic-acid gas which may be generated at any time in the barrel.

Having thus fully described my improvement, I do not desire to claim nor to use a sharp edge on the seat of a valve 5 but,

I claim- The sharp-edged disk, Fig. 3, when applied to operate upon a flat seat in a Ventilating beer-bung as and for the purpose described.

Witnesses: MICHAEL HEY.

BENJ. MoEIVsoN, J As. WINsMoEE. i

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