US1498154A - Flushing valve - Google Patents

Description

June 17 1924; 17,498,154

J. DINEEN FLUSHING VALVE Filed Oct. 1921 y 3 0677151" .jp/z/z/ Jule 7Z\/ Patented June 17, 1924.

UNITED STATES JOHN DINEEN, OF CHICAGO, ILLINOIS.

FLUSHING VALVE.

Application filed October 3, 1921.

T 0 all whom it may concern:

Be it known that I, JOHN DrNnnN, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Flushing Valves; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in flushing valves and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

One of the objects of the present invention is to simplify the construction and improve the operation of a valve for this purpose.

Other objects of the invention as well as the advantages thereof will more fully ap pear as I proceed with my specification.

In the drawings Figure 1 is a vertical section through a flushing valve embodying myinvention;

Figure 2 is a horizontal section through the same on the line 2-2 of Fig. 1;

Figure 3 is a view in side elevation of a part of my improved flushing valve which will be more specifically referred to later;

Figure 1 is a perspective view of a valve. stem embodied in my improved flushing valve;

Figure 5 is a vertical detail sectional view showing a modified form of a part of m invention which will be more fully referred to later.

Referring now in detail to that embodiment of my invention illustrated in the accompanying drawing, 5 indicates the up right tubular body or casing of the im proved flushing valve. Threaded onto the bottom end ofsaid body is a tapered discharge fitting 6 and threaded into the top end of said body is the bottom wall of a head block 7 (see Figs. 1 and 3). In the head block which also constitutes the valve casing of the valve, is provided an open top chamber 8 of a diameter approximating that of the interior of the body 5 and depending from the bottom wallof the head block is a tubular extension 9.

The chamber 8 in the head block also pro vides theinlet chamber of the flushing valve and to that end, a water inlet pipe or con- Serial No. 505,175.

duit 10 is threaded through the side wall of the head block. to discharge into said chamber. The open top of the chamber 8 is closed by a cap 11, which is screwed into the top end of the head block. a compressible gasket 12 being interposed between said head block and cap to make a watertight joint.

In the depending tubular extension 9 is a bore 13 which opens at its top end into the chamber 8, there being a valve seat 14: formed at the junction of the said bore and chamber. The bottom end of the bore also provides a part of a dash pot, as will later appear. Two oppositely disposed, elongated openings are provided in the extension 9 which connect the bore 13 with the interior of the body 5 and in the bottom end wall of the extension is provided a centrallyarranged hole 16.

17 indicates as a whole (see Figs. 1 and 1) a valve stem embodied in my improved valve. It includes an intermediate body 18, a top valve head 19 and a bottom piston head 20, and top and bottom end extensions 21 and 22 respectively. The top valve head 19 is adapted to normally engage or rest upon the valve seat 14: while the piston head 20 fits snugly and is capable of movement in the bottom end of the bore 13 and is normally in position below the bottom ends of the side openings 15. Thus the piston 20 in connection with the bottom end of said here 13 provides a dash pot. In the periphery of the valve head 20 is provided a minute vertical slot 23 forming a leakage port. The bottom end extension 22 extends through the hole 16 and the upper portion of said extension is tapered as at 22 to permit drainage of such sediment as may collect in the bore below the piston head 20. The top end extension 21 is pointed and has guided bearing in a hole 24 in the cap 11. This hole communicates with a cham ber 25 in the top of the cap, there being other holes 26 in the cap, disposed about the hole 24 0110 connect the chamber 25 with the chamber 8 in the head block. Instead of providing the leakage port in the periphcry of the valve head 20, the same may be formed in the bottom wall of the extension 9 as indicated at 23* in Fig. 5.

Associated with the valve stem 17 for actuating the same is a lever 27. This lever is pivoted, between its ends, upon a cross pin 28 fixed between. a boss 29 on the outside of the casing and a retainer block 30 secured to the vertical face of the boss in any suitable manner. The inner end 27 of said lever extends through a rectangular opening 31 in the body 5 in the plane of the boss 29 and engages beneath the bottom end of the valve stem extension 22. Preferably the boss 29 and retainer block 30 have complemental concaved recesses to receive a cylindrical enlargement 32 of the lever, about the pin 28. Fixed to the inner surface of the body 5 above the opening 31 through which the inner end of the lever 27 extends is an apron 33. This apron has a vertically arranged slot 34 in it to accommodate for the swing or movement of the lever 27 and acts to prevent the flowing water from being directed toward the opening 31.

The operation of my improved flushing valve is as follows :Assume that the pipe 10 is connected up with a water supply under pressure. Under such conditions the chamber 8 in the head block is filled with water under pressure and the valve stem 17 is in the position shown in full lines in Fig. 1. VVhen a downward movement is imparted to the exposed or outer end of the handle 27 the inner end 27 will swing upwardly. As said inner end normally en gages the bottom end of the valve stem, the same will be elevated or lifted into the position shown in dotted lines in Fig. 1, wherein the valve head 19 is free from the seat 14 and the bottom surface of the piston head 20 is in a plane above the bottom of the side openings 15 in the extension 9. Water will now flow rapidly into the top end of the bore and will be directed by the conical top of said headout through the side openings 15 of the extension 9 and into the interior of the casing 5 and then out through the discharge fitting 6. During this flow of water the apron 33 will deflect the water away from the opening 31 in the casing through which the handle extends." It is herein pointed out that in the initial upward or opening movement of the valve stem, the top extension 21 w1ll move upwardly through the guide hole 24 and into the interior of the chamber 25, the displaced water in the chamber passing down through the holes 26 into the chamber 8 to pass out with the flowing water therein.

A part of the water passing out through the side openings 15 will enter the bottom part of the bore 13 beneath the bottom valve head 20, and as the bottom end part 22 of the valve stem at this time is located in and closes off the hole 16', this water can not readily escape therethrough. When the valve stem 17 has descended under the action of gravity together with the pressure of the water on the valve head thereof far enough so that the bottom piston 20 has passed the bottom ends of the side openings 15, the water in the bore below said valve head will provide a cushion for the dash pot which will resist further closing of said valve stem. Thereafter a part of the water forming the cushion will be forced or discharged upwardly through minute slot 23 in the piston head 20, thus providing for a leakage and consequent reduction of the water providing the cushion to allow for a slow downward movement of the valve stem as a whole until the valve head'19 engages upon the seat 1 1 and cuts off the flow of water into the bore 13. In the con struction shown in Fig. 5, the leakage port 3 in the bottom wall of the extension 9 will operate in substantially the same man ner as the groove 23 in the piston. As the valve head 19 approaches its seat the tapered part 22 of the stem will have cleared the hole 16, thus permitting such sediment as has collected in the bottom end of the bore Flt) few in number and are made large and 7 strong and are easily assembled. No springs or other yielding parts are used which rapidly get out of order. Sediment is automatically drained from beneath the piston head 20 so that said sediment cannot score the engaging surfacesof piston head and bore. The apron 33 effectively prevents water from splashing out through the hole 31 and thus eliminates the use of a stufling box at this point. i

While in describing my invention I have referred to certain details of mechanical construction and arrangement of parts, I do not wish to be limited thereto except as may be pointed out in the appended claims.

I claim as my invention:

1. In a flushing valve mechanism an up right tubular body, a head block providing a valve chamber open at the top with an inlet at one side, and having a tubular extension with a dash pot at its bottom end and a valve seat at its top end, saidrtubular extension being open intermediate the valve seat anddash pot, a valve member comprising a stem, a valve headladapted to close on the seat and a piston'for the dash pot, means providing a leakage from the dash pot at a predetermined rate, and a hollow cap providing'a closure for the valve chamber and a guide'for the top end of the valve stem. v

2. In a flushing valve mechanism an up right tubular body, a head block providing a valve chamber open at the top with an inlet at one side, and having a tubular extension with a dash pot at its bottom end and a valve seat at its top end, said tubular extension being open intermediate the valve seat and dash pot, a valve member comprising a stem, a valve head adapted to close on the seat and a piston for the dash pot, said piston having a leakage port of a predetermined size, and a hollow cap providing a closure for the valve chamber and a guide for the top end of the valve stem.

In a flushing valve mechanism, an up right tubular body, a head block providing a valve chamber open at the top With an inlet at one side, and having a tubular extension with a dash pot at its bottom end and a valve seat at its top end, said tubular extension being open intermediate the valve seat and dash pot, a valve member comprising a stem, a valve head adapted to close on the seat and apiston for the dash pot, means providing a leakage from the dash pot at a predetermined rate. a cap providing a closure for the valve Clltllb her, the bottom of the dash pot being pro" vided With an opening through which the bottom end of the valve stem extends, said end of the valve stem having a part of reduced diameter to permit discharge from said dash pot during a predetermined interval in the closing of the valve stem.

4. In a flushing valve mechanism, an upright tubular body, a head block providing a valve chamber open at the top With an inlet at one side, and having a tubular extension With a dash pot at its bottom end and a valve seat at its top end, said tubular extension being open intermediate the valve seat and dash pot, avalve member comprising astem, a valve head adapted to close on the seat and a piston for the dash pot, means providing leakage port from the dash pot at a predetermined rate, and a cap threaded into the head block for closing off the chamber, said cap having a smaller chamber at its top end and a spider-like hearing opening for the top end of the valve stem, which opening provides communication between the tWo chambers.

A flushing valve comprising an upright tubular Casing, means providing a chamber at the top end of the casing, a valve stem including a valve head in said chamber, means on the casing} and extending through an opening in the casing for actuating the valve stem, and an apron fixed to the inside of the casing for covering said opening and. directing the passing Water away from said opening, said apron having a vertically arranged slot through Which the valve stem actuating means extends.

6. A flushing valve comprising an upright tubular casing, means providing a chamber at the top end of the casing, a valve stem including a valve head in said chamber, a hand lever pivoted on the casing and having a part extended through an opening therein to engage the valve stem, and an apron fixed to the inside of the casing about said opening for directing Water away from said opening, said apron having a vertically disposed slot through which a part of the hand lever extends.

In testimony that I claim the foregoing as my invention, I aflix my signature in the presence of two Witnesses, this 29th day of September, A. D. 1921.

JOHN DINEEN.

lVitnesses CLARENOE E. MEHLHOPE, T. H. ALFREns.

Images