US271236A - John p - Google Patents

Description

(No Model.)

J. P. GRUBER.

VENT OR VENT BUNG.

Patented Jan. 30, 1883.

INVENTOR: flat.

By his Jl ttorneys,

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WITNESSES:

. UNITED STATES PATE T OFFICE.

JOHN P. GRUBER, OF JERSEY CITY, NEW JERSEY.

.VENT OR VENT-BUNG.

SPECIFICATION forming part of Letters Patent No. 271,236, dated January 30, 1583.

Application filed October 26, 1882. (No model.)

To all whom it may concern:

Be it known that I, JOHN P. GRUBER, a citizen of the United States, residing in Jersey City, Hudson county, New Jersey, have invented certain Improvements in Vents or Vent- Bungs, of which the following is a specifica' register or coincide with the passages 71. h in tion.

My inventioinrelates in part to an improved construction of a vent-bung for beer kegs and barrels, and for other receptacles of gaseous liquids, and in part to the method of constructing the valve for the same.

In the drawings which serve to illustrate my invention, Figure 1 is a side view, and Fig. 2 a plan, of a vent-bung provided with my improvements. These views show the bung as a whole. Fig. 3 is a vertical mid-section of the vent-bung. Fig. 4 is a plan of the plug, and

Fig. 5 is a plan of the under side of the body of the bung. These three views are drawn to a larger scale than Figs. 1 and 2. Figs. 6 and 7 illustrate the construction of the valve, and will be referred to hereinafter. Fig. 8 is a modification of the plug, which will be hereinafter described.

Let A represent the body of the bung, provided with an external screw-thread, a,whereby it is screwed into the keg, and a flange, b,provided with recesses c c to receive the wrench for screwing it in. This part A has a bore, (1, (see Figs. 3 and 5,) internally screw-threaded to receive the plug, and three bores or passages, e, e, and 6 for the passage of air. The passage 0 extends transversely through the hung from one recess cto the other. The passage 0 extends longitudinally from passage 6 to thelower end ofthe bodyA. The passage 6 extends from the bottom of the bore (1, hya bend, to the lower end of the body A.

B is the plug,which is provided with a bore or recess, f, to form with d a valve-chamber, and a screw-threaded tubular projection, g, which screws into the bore cl in the body A. This plug is cylindrical, and has a diameter about equal to that of the body, as shown.

It is provided with two air-passages, h and h, the former of which extends from the bottom of the valve-chamber f, by a bend, to the upper face or end of the plug, and the latter of which extends through the plug longitudinally from bottom to top.

G is an annular washer or packing, of leather, rubber, or other suitable material, which is interposed between the upper end or face of the plug B and the lower face or end. of the body A when the two are screwed together. The passages c e in the body are made to the plug, respectively, when the parts are tightly screwed together, and holes are cutin the washer or packing C at the proper points to allow a free passage for the air and gas.

D is the valve as a whole, which finds aseat on the end of the projection g on plug B, and 1 is limited in its lift by the roof of chamber d. When the two parts A and Bare screwed tightly together, with the valve inclosed, as shown in Fig. 3, the bung is practically the same as if made from one piece, and the valve is protected from injury, even though the bung receives the severest usage.

The operation is as follows: When the bung is screwed into the keg of beer or other gaseous liquid the gas from within rises through passages 71/ and e and presses down on top of the valveD, thus holding it down upon its seat and effectually closing the valve-apertu re. When beer is drawn at the faucet until the pressure inside becomes less than that of the air outside, then the air enters through passages e, e, and h. takes under and lifts the valve from its seat. The air then flows into the keg through passages e and h until the equilib rium is established. Thus all escape of gas is prevented, while air is admitted as needed to enable the beer to flow freely at the faucet.

I will now describe the peculiar construction of the valve D, referring especially to Figs 6 and 7, the former of which shows the four pieces of which the same is composed detached from each other, and the latter the construction of the triangular guide on the valve-stem.

a is the valve proper, which is made of vul canized rubber or other suitable material], with a flat circular disk-like top, a conical base, and an axial perforation for the stem j.

The winged guide is is made by taking a thin metal tube (l in Fig. 7) and rolling, drawing, or swaging it in until it assumes the shape shown in the end view, Fig. 7. This guide is pressed onto the stem j (which may be of wire) with such force as to fixit firmly in place.

The valve i is then put onto the upper end of the stem, which projects through it, and a circular metal or other disk, on, (shown in Fig. 6,) is then placed on the stem over the valve and fixed by riveting or other means. The valve thus formed is peculiarly durable, and will last usually as long as the remaining parts. Should it become injured or leaky, it may be readily removed by taking out plug 13. It will be seen that the disk-like top of the valve t rests on the end of the tubular part 9 of the plug B, while the conical part below it depends into same. The guide It plays loosely in the bore f. The valve is thus constructed to lift freely,

yet to close surely and hermetically.

Fig. 8 illustrates a slight modification of the plug B, in which the passage h is made to come out at the axis of the plug by bending it, as shown.

By extending the transverse passage 0 through the body A two inlets are provided. Itone should become accidentally stopped, the other will admit air. Should the valve get stuck by reason of the mucilaginous properties of the beer or from other causes, or the passages become clogged, the vent may be readily cleaned by forcing a stream of water through it.

It will be seen that by my arrangement of the valve in the bung the weight of the valve tends to keep itnormally closed. This is very important, as if it should get stuck it will stick closed and not open.

Having thus described my invention, I claim- 1. A valve for a vent-bung, comprising a valve proper, i, made of rubber or other similar material, a stem,j, a winged guide, It, made 'from a thin sheet-metal tube swaged or drawn into the form shown and secured to the stem, and 'a disk or washer secured to the stem above the'valve i, all constructed and arranged substantially as set forth. I

2. A vent-bung comprising abody provided with an air-passage, e 6, leading from its outer .toits inner end, a chamber or bore, d, and an air-passage. e leading from said chamber to the inner end of the body, a plug arranged to scr'ewinto the inner end of the body, and provided with a passage, h, which connects the passage 0 a in the body with a valve-chamber, f, in the plug, and a passage, h, which forms a continuation of the passage 6 in the body through the plug, and a valve arranged in the ehamberf, all substantially as set forth, the air-passages in the body and plug being arranged to coincide when the parts are screwed together, as shown.

3. The combination, to form a vent-bung, ot the body A, provided with a recessed flange, b, an external screw-thread, a a transverse passage, 0, a longitudinal passage, 6, an angular passage, 0 and an internally-screwthreaded chamber or here, d, the plug B, provided with an externally-screw-threaded projection, g, a bore or chamber,f, and passages h and h, the washer O, and the valve D, all constructed substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOHN P. GRUBER.

Witnesses:

HENRY Qomvn'r'r, ARTHUR O. FRASER.

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