US1898816A - Valve - Google Patents

Description

F231). 21, 1933. CROSSEN 1,898,816

VALVE Filed Dec. 18, 1929 G60?" 6 fiZCrosceir l atent ed Feb. 21, 1933 UNITED STATES PATEN oFFice VALVE Application filed December 18, 1929. Serial No. 414,902.

My present invention relates to valves of the type used in steam and water lines and has for some of itsobjects the provision of an extremely simple, highly eflicient, relatively inexpensive valve of the type de-- scribed, certain wearing parts of which may be renewed readily when they become worn.

Generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims. 7

In the accompanying drawing, which illustrates the invention, like characters indicate like parts throughout the several views.

Referring to the drawing:

Fig. 1 is a side elevation of the valve;

Fig. 2 is a view corresponding to Fig. 1 but having some parts broken away and some parts being shown in section;

F ig. 3 is a plan view of the sleeve, the ends of which form seats for the valve disk;

Fig. 4 is a side elevation of the sleeve;

Fig. 5 is a view in elevation of a perforated retainingsleeve; and

Fig. 6 is a view in elevationof a perforated tube or screen. 7

The numeral 7 indicates the valve casing as an entirety. Formed in the casing 7 at one side thereof is an internally threaded inlet port8 and at the opposite side thereof is an internally threaded outlet port 9. These ports 8 and 9 are adapted to receive the externally screw-threaded ends of pipe sections to connect the valve in a pipe line.

In the casing 7 between the inlet port 8 and outlet port 9 is a partition 10, in which and aligned with the vertical axis of the casing is a port opening 11 adapted to connect the inlet and outlet ports. At the bottom of the valve casing 7 and aligned with the vertical axis of said casing is an opening 12 which is normally closed by a cap 18, which cap has screw-threaded engagement therewith at 14:. p

Inserted into the port 11 in the casing partition 10, from the bottom side thereof, is a sleeve 15 that is formed with an external annular shoulder 16 at its central portion,

and which shoulder engages the underside of the partition 10 thereby holding the sleeve against upward movements. This sleeve 15 is alike at both ends and when it is in operative position its upper end projects slightly above the top of the partition. It will, of course, be apparent that the sleeve 15 being alike at both ends may be inserted into the port 11 either side up. To hold the sleeve 15 in operative position against downward movements, 1 provide a perforated tubular member 17, which at its upper portion is en- (39 larged internally and telescoped over the lower end portion of the sleeve 15 so that it engagesthe sleeve 15 at the underside of its shoulder 16 and at the bottom end thereof. This perforated tubular member 17 extends between the sleeve 15 and lower end of the casing and is normally engaged by the inside bottom portion of the cap 13 and-when said cap is screwed up tightly the perforated tubular member 17 will be tightly pressed between said cap and the sleeve 15, and said sleeve 15 will be positively held against movement away from an operative position. The sleeve 15 closely engages the sides of the port opening 11 in the partition 10 and when the shoulder 16 thereof is pressed tightly against the underside of said partition awater tight joint is formed between said sleeve 15 and partition 10. The sleeve 15 and perforated tubular memloer 17 are removable through the bottom opening 12 in the casing when the cap 13 is removed.

The upper or neck portion of the casing 7, indicated by 7 is detachably secured to the main body of the casing 7 by a screw-threaded connectionat 18 and carried by the upper neck portion of the casing is a valve stem 19 having screw-threaded engagement therewith at 20 and provided at its upper end with a hand wheel 21. The lower end of the valve stem 19 is flanged at 22 and carried by and turnably mounted on the flanged lower end of the valve stem is a valve disk retainer 23, the bottom of which is recessed to. receive a relatively hard but somewhat resilient valve disk 24, which disk is securedin the recessed portion of the retainer-.23

by means of a nut-equipped bolt 25. This bolt is formed as part of and projects downwardlyfrom the central portionof the retainer 23.

(III

'' it is not necessary to buyany new order to renew the first seat which omes' The valve stem 19 and disk 24 are axially aligned with the sleeve 15 and said valve disk is movable into and out of engagement with the upper end of said sleeve when the stem 19 is screwed up and down by manipulation of the hand wheel 21. The disk 24 is preferably slightly larger than the ends of the sleeve 15 and will, when tightened thereagainst, stop any flow between the inlet port 8 and outlet port 9.

When the upper end of the sleeve 15, which acts as a seat for the valve closing disk 24 becomes worn this sleeve may be readily turned over so as to present a new unused valve seating surface, and, of course, if after a lon period of time both ends of the disk have iecome so worn that the valve can no more be satisfactorily used the sleeve15 may be discarded and a new sleeve put in to take its lace.

' t might be well to state that the valve casing and valve parts above the partition 10 are all standardwell-known type in which type of valve construction the disk 24, which isllikely to require renewing at more or less frequent intervals ma be removed with the upper neck portion 0 the casing when said neck portion is screwed loose from themain body of the casing and said disk may be readily removed from the disk holder 23 by removal of the nut 25. In valves of this typeit has heretofore been common practice to renew such parts as the disk 24 from time to time but when finally after perhaps quite long i use the valve seat would become so badly worn that the resilience of the disk would no longer compensate for the irregularities in the surface of the valve seat, to discard the entire valve and substitute a new one, therefore. This practice is, of course, exceedingly expensive. I With the valve shown, however, both the disk andseat are readily renewable and the valve as marketed has two disk seating surfaces on the removable sleeve 15 so that arts in worn out. By this method, of course, the life of the valve is materially extended. To further extend the life of each valve seat and valve disk the perforations in the tubular member 17 may be small enough to act as a screen to keep relatively large pieces of scale or other foreign substance from becoming lodged between the valve seat and disk. Such fore' substance, of course, when pressed between the disk 24 and valve seat at the top of the sleeve 15 by closing the valve is likely to cause considerable damage to both the seat and the disk and it is therefore advantageous to keep suchmatter. from becoming lodged therebetween. p

' If itis desired to still further safeguard the valve disk and seat against such foreign substance a finel perforated tubular screen orsieve 26 may lie employed. This tubular screen or sieve 26 may be telescoped over the perforated tubular member 17, as shown in Fig. 2, so that it engages an external shoulder 27 near the upper end of said perforated tubular member and will be held therebetween and the cap 13.

Vhat I claim is:

1. A valve comprising a casing having inlet and outlet ports, a partition in said casing between said ports, a port opening in said partition for connecting the inlet and outlet ports, an opening in said casing on one side of said partition that is co-axially aligned with the port opening in the casing partition, a stem extending into said casing on the other side ,of the partition and being coaxially aligned with the port in said partition and having screw-threaded engagement with the casing, a port closin disk carried by said stem at its inner endan movable toward and away from the port in the partition when said stem is turned, a sleeve in the port in the partition and having an external shoulder at its intermediate portion that engages the side of the. partition facing said opening in the casing, a detachable cap for closing the said opening in the casing and having threaded engagement therewith, and a perforated tubular member seated against the lower portion of the sleeve at its inner end portion and against the insidebottom portion of the cap at its outer end portion to hold said sleeve against movement-out of the port opening, said sleeve in the partition port opening being alike at each end so that either end thereof may be inserted throughthe port and the end that is inserted through the port extending beyond the partition andadapted to have said disk seated thereon to close the valve so that when the valve seat on one end becomesworn said sleeve may be turnedend for end, and a new seat presented.

2. The structure defined in claim 1 in further. combination with a screen around said perforated sleeveand also held in place by said cap.

3. A valve comprising a casinghaving in-" let and outlet ports, a-partition in said casing between said ports, a port opening in said partition for connecting the inlet and outlet ports, an openingin the said casing in C0.

axial alignment with the partition port, a stem extending into said casing on the side thereof opposite the said casing opening and being co-axially aligned with the saidpartition port and having screw-threaded engage ment with the casing, a port closing disk carried by said stem at its inner end for movements toward and away from the partition when said stem is turned, a sleeve in said partition port having an external shoulder at its intermediate portion that engages the side of the partition facing the casing opening, a removableclosure for said'casing opening and a perforated tubular member seated.

against the lower portion of said sleeve at its inner end and against the inside bottom portion of the removable closure at its outer end portion to hold said sleeve against movement out of the port opening, said sleeve in the partition port being alike at each end so that either end may be inserted through the port and the end that is inserted through the port extending beyond the partition and adapted to have said disk seated thereon to close the valve so that when the valve seat on one end becomes Worn said valve may be turned end for end and a neW seat presented.

In testimony whereof I aflix my signature.

GEORGE M. GROSSEN.

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