US854182A - Tire or other valve. - Google Patents

Description

- PATENTED MAY 21, 1907. M. G. SGHWEINERT dz H. P. KRAFT.

TIRE OR OTHER VALVE.

APPLICATION FILED SEPT. 5, 1905.

FIG. 2.

WITNESSES:

UNITED STAT S PATENT 'orrron.

MAXIMILIAN CHARLES SCHWEINERT, oF- WEST HOBOKEN, NEW JERSEY,

AND HENRY'P. KRAFT, or. NEW YORK, N. Y.

Y TIRE OR OTHER VALVE.

Specification of Letters Patent;

Patented May, 21, 1907.

Application filed September a, 1905.. BerinI'No. 277,052.

improved construction which wil prevent the displacement of a packing ring, and which has other advantages referred to in detail hereinafter.

The accompanying drawings illustrate embodiments of the invention.

Figure 1 is a diametral section of a valve, showing the internal parts in elevation. Fig. 2 is a section through the seat member of the valve, in process of construction. ,Fig. 3 is a section through the seat member completed. Fig. 4 is a horizontal section illustrating the method of construction. Figs. 5 and 6 are sections through the seat member, illustrating alternative constructions.

Referring to the embodiments illustrated, the valve comprises a shell A, a seat member B, a plug C carrying the seat member and screwing into a socket at the upper end of the shell, a valve stem D projecting above and below the valve proper E, a closing spring F, a spring holder G, a packing ring H making an air tight joint between the seat member B and the shellA. In general these parts may be of any usual or suitable con-.

struction and operation, the internal parts shown being adapted to be inse'rtedin or removedfrom the shell at will by screwing in or out the plug C, which, for this purpose, is provided with a screw-driver rib on its top adapted to be engaged by a complementary provision on the cap; these parts being, generally speaking, all old and well understood in the art. It is to be understood that the improvement is also applicableto other types of valve.

There is sometimes a'tendency of the packing ring H to stick to the Wall of the casing and to be stripped from its groove by thecarrying the packing ring H always with the seat member, it is proposed to compress the packing ring or a portion thereof against the periphery of the member, preferably by means of a ring surrounding a portion of the packing ring and contracted thereon.

Ordinarily the member B is provided with a groove extendin around lts periphery, having an'inner wal J, an upper wall K, and a lower wall L, the walls K and L being designed to prevent longitudinal.movement of the packing ring upon the seat member, and the lower wall L serving especially to prevent the pack' g ring bein drawn over the lower end of t e seat mem er when the latter is pulledout of the valve shell; It is found, owever, in practice that the packing ring occasionally adheres so firmly'to the shell as to slip over the wall L and the lower end of the seat member, thus falling into the valve and interfering with its operation. By placing the packing ring in a groove, and in addition providing means overlying the periph- L of the groove.

' Fig. 2 shows the packing ring H in the groove and the ring M before use of a diameter sufficient to permit it to pass over the lower shoulder of the groove and over the lower portion of the packing. After being introuced upon the lower portion of the packing ring the ring is then contracted as shown in Fig. 3, so that it holds the lower portion N of the packing ring, which I desi mate as a whole by the'letter H, frictiona ly against the bottom J of the groove, and also revents the expansion of the portion N of t 1e packing ring sufficiently to pass over the wall or shoulder L. The ring M also is preferably contracted to such a diameter that itcannot 'pass over the shoulder L. Any suitable than its upper portion before use, so that sufiiciently to pass over the wall or shoulder when the ring M is contracted it will not squeeze and distort the-packing ring H. It will nevertheless hold it firmly in place. Various other devices for overlying and preferably also compressing the packing ring may be substituted for the separate metal ring M. For example, Fig? 6 shows a ring M constituted by an upwardly extending edge of the lower portion of the seat member. This may conveniently be swaged up against the rubber so as to overlie any portion there of and to press it with any desired pressure against the inner wall J of the groove. or,

instead of being a continuous ring M, it may be a series of teeth. The provision of an up wardly-extending edge of the lower portion of the seat member, however, is not specifically claimed herein, being claimed in a copending application, Serial No. 277,053 filed September 5, 1905.

Though we have described with great particularity of detail certain specific embodiments of our invention, yet it is not to be understood therefrom that the invention is limited to the particular embodiments illustrated.

Various modifications in detail, and in the arrangement and combination of the parts may be made by those skilled in the art without departure from the invention.

What we claim is 1. In a valve for tires or the like, a packing ring, a member having a peripheral, groove therefor, and a ring surrounding said packing ring to prevent its expansion over a side wall of the groove, the inner diameter of said ring 'being less than the outer diameter of said wall, whereby the ring is also retained.

2. In a valve for tires or the like, a seat member B having a peripheral groove, a 40 packing ring II in said groove, and ametal ring M surrounding said packing ring and contracted thereon to a diameter less than that of the adjacent shoulder of said groove.

3. In a valve for tires or the like, a member having a peripheral groove, a surround ing casing, a packing ring in said groove and extending laterally beyond the member on which it is carried, so that its periphery is adapted to engage the surrounding casing to close the space between such casing and saidadapted to engage the'surrounding casing to close the space between such casing and said member, and means overlying a portion of said ring to prevent it from'being stripped from said member by a strain in an axial direction.

In witness whereof, we have hereunto signed our names in the presence of two subscribing witnesses.

MAXIMILIAN' CHARLES SCHWEINERT. HENRY P. KRAFT.

Witnesses:

DOMINGO A. USINA, FRED WHITE.

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