US2920862A - Renewable ring and holder for globe valve - Google Patents

Description

Jan. 12,

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1960 E. s. BEARD RENEWABLE RING AND HOLDER FOR GLOBE VALVE Filed Sept. 1a, 1956 Fig./

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44 Edward S. Beard v INVIENTOR.

United States Patent RENEWABLE RING AND HOLDER FOR GLOBE VALVE Edward S. Beard, Spring City, Pa.,

'Application September 18, 1956, Serial No. 610,555

1 Claim. (Cl. 251-357) The present invention relates in a broad aspect to certain new and useful improvements in a globe valve and has reference, more particularly, to a renewable valve disk or ring of the usual composition type and an improved holder therefor.

It is a matter of common knowledge that a conventional globe valve is characterized by a substantially hollow body having an internal partition or divider provided with a passage for fluid and an annular seat for a valve. A wheel equipped spindle or valve stem is adjustably mounted in a bonnet, the latter being screwed on the valve body and being provided at its upper end with a suitable packing gland. On the lower end of the spindle a flanged head serves to accommodate a socket member on a detachable holder. The holder is characterized by a cup containing a renewable valving ring or disk as it is perhaps most often called. For quick reference a globe va-lve having these characteristics is seen in the Yardley Patent 1,988,258 of January 15, 1935.

Experience with globe valves constructed as generally stated above shows that thirty percent, more or. less, of these valves may leak in little or no time due to the fact that the valve disk or ring under repeated opening and closing and stress and strain will crack and sometimes disintegrate. One object of the instant invention is to provide an adaptation in which wear and tear on the renewable valving ring or disk is minimized and the life of the valving ring is therefore greatly and economically extended.

Another difiiculty which is encountered in the art is that which is indeed difiicult to cope with; namely, the recurring situation which entails so much time and money in removing and replacing valving rings. As is well known these are so often distorted and jammed in their holding cups that one has to resort to drilling and chiseling and the use of special tools in dislodging the Worn rings so that they may be expeditiously replaced. Therefore, it is another object of the invention to provide a renewable-type valving ring or disk which is not only easy to insert but is equally easy to dislodge and remove when a repair job has to be undertaken.

Features and advantages in addition to those specifically set forth will become more readily apparent from the following description and the accompanying sheet of illustrative drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the views:

Fig. 1 is a view in section and elevation of a globe valve embodying the herein improved holding cup and vlalving ring;

Fig. 2 is a horizontal section on the line 22 of Fig. 1, looking in the direction of the arrows;

Fig. 3 is a perspective view of the improved bevellededge valving ring or disk by itself;

Fig. 4 is, a section through the holder and valving ring before the latter is clamped securely in the bottom of the p;

Fig. 5 is a view similar to Fig. 4 with the parts in wardly. This means that the'n'm itself is decreased in section and wherein a modification (wherein an adaptor is provided) is disclosed; and,

Fig. 6 is an exploded perspective view of the modified form of the invention seen in Fig. 5.

Referring now to the drawings and particularly to Fig. l the conventional globe valve comprises a hollow body made with usual pipe connections 10 and 12 and an upstanding neck 14 screw threaded to accommodate the screw threads 16 on the nut like lower end 18 of the conventional type bonnet 20. The interior of the body has the usual diaphragm or partition 22 with an upstanding annular valve seat 24. The threaded portion of the valve stem or spindle 26 is adjustable mounted in the neck portion of the bonnet and the latter is provided on its upper end with an appropriate packing gland 28. The valve stem or spindle has the usual hand wheel 30 on its upper end. On the interior of the neck of the body the lower end of the spindle or stem has a flanged head 32 removably support-ing the socket member 34 atop the holder 36. Actually all of these parts are old and well known as is evident. With reference to one form of the invention as seen in Figs. 1 to 4 it will be noticed that depending skirt or cup 38 provides a receptacle for the insertable and removable composition valving ring or washer 40 held in place as usual by a stud 42 passing through the center hole and serving to accommodate an assembling and clamping nut; for example, the nut 44 seen in Fig. 1. Here again it may be said that the construction described is common. The dilference is that the inner periphery of the'rim portion of the holder cup, that is the surface 46 is bevelled outwardly and downtion of the cup and is of a normal thickness less than the predetermined full depth of the cup. Also, the outer peripheral edge 48 has a bevel which is appropriately conformable with the bevelled periphery 46. Actually the greatest outside diameter of the washer is about that of the greatest diameter of the mouth of the cup. When the nut 44 is tightened as shown in Fig. l the washer or ring pushes up into the cup and is seated in the bottom of the cup and it is squeezed radially, is compressed and the fibers are contracted and hence the washer is strengthened. The more the pressure applied to the valving surface against the seat 24, the better the valving action becomes. These accomplishments result in rendering the valving washer less fragile and less likely to disintegrate, crack or become warped or otherwise damaged. By comparing Fig. 1 with Fig. 4 it will be noticed that in Fig. 4 the valving ring or washer is not under clamping pressure. Therefore, a slight space A exists between the bottom of the cup and the cooperating surface of the washer. When the latter is tightened and clamped home the result is as shown in Fig. l in which the then easy-to-remove ring or washer is in operating position.

In the modification seen in Fig. 5 the numeral 50 designates a valve member or head which is conventional throughout in that it has a body portion 52 with a recessed boss or socket member 54 on its top corresponding with that already described as at 34. There is the usual simple stud 56 carrying a clamping nut 58. The relatively thin skirt or annular rim is denoted at 60 and here the diameter of the receptacle portion of the cup is uniform throughout. In this arrangement an adaptor band of rigid metal 62 is provided. The external or peripheral surface is truly circular and is therefore fitted telescopically into the correspondingly shaped cup. The composition ring or washer 64 is fitted here into the internal-1y and hence the adaptor and washer serve as a unit. Here Patented Jan. 12, 1960 again the outer peripheral surface of the valving ring or washer is tapered at 68 to correspond with the internal taper of the adaptor band and also the thickness is less than thecross-section of the adaptor band to provide the compensating space seen at Bin Fig. 6. Therefore, the takeup and squeeze-in action is the same here as already set forth. This construction makes it possible to employ the invention at hand in conjunction with existing type holders in more or less standard globe valves, In other Words the adaptor makes this changeover possible. The fact remains, however, that in both forms of the invention herein seen the marginally tapered valving element and the tapered cup or holder provides not only the noncracking feature but also assists in enabling one to readily remove and replace a worn washer.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

A repair assembly for the holder of a valve wherein the holder has a cup provided with an essentially annular side Wall and a bottom, and a stud centrally axially secured in said cup and at approximately right angles to said cup bottom, said repair assembly comprising an annular adapter band having a side Wall provided with an inner annular edge and an outer annular edge, the distance between said edges being approximately the same as the depth of said cup, said band removably fitting in said cup and disposed against the inner surface of the side of the cup thereby occupying a portion of the space defined by said cup and reducing the effective diameter of said cup, the outer diameter of said band being substantially equal to the inner diameter of the cup, the inner surface of said band being bevelled and said band a-,oadsea 4 gradually increasing in thickness from the outerannular edge to said inner annular edge to form the bevel so that the thinner edge of the band is located at the mouth of the cup, a compressible washer fitting removably and conforrningly within said band, the side of said washer being bevelled with the greater diameter part of the washer located at the wider diameter part of the band so that the respective bevels conform with each other, said stud having a cylindrical outer surface, said washer having a cylindrical opening conforming to the cylindrical surface of said stud, said stud extending through said washer opening, said washer having an outer surface, means connected with said stud and engaging a portion of said washer outer surface for removably clamping said washer and consequently said ladapter band in said cup, said washer being of a thickness less than the depth of the cup so that when said washer is moved inwardly against the bottom of the cup said washer is compressed radially inwardly by engaging said band and tends to become contracted while said washer is also squeezed radially outwardly by the action of said clamping means, and the radial outward force of said washer and the radial inward reaction from said band cooperating to radially compress said washer.

References Cited in the file of this patent UNITED STATES PATENTS 61,414 Frink Jan. 22,1867 1,277,413 Haynes Sept. 3, 1918 1,452,811 Mueller Apr. 24, 1923 1,613,072 Wilson Jan. 4, 1927 1,635,295 Tyden July 12, 1927 1,988,258 Yardly Jan. 15, 1935 2,361,979 Tarwater' Nov. 7, 1944 FOREIGN PATENTS 7,895 Great Britain of'1884 168,353 Great Britain Sept. 8, 1921 613,823 Great Britain Dec. 3, 1948

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