US1493253A - Valve - Google Patents

Description

May '6 1924. 1,493,253

L. w; EGGLE'STON VALVE Filed March 1. 1923 if I g 3:? Z?

- Z I V f; INVENTOR" v 7 7 Y I 'aATTORNEY.

Patented May 6, 1924.

UNITED STATES 1,4aaz53 PATENT OFFICE.

LEWIS W. 'EGGLESTON, OF BUFFALO, NEW YORK. ASSIGNOR TO AMERICAN RADIATOR COMPANY. OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

VALVE.

Application filed March 1, 1923. Serial No. 622,063.

capable of general application in various types of valves, it is particularly applicable to quick opening types of valves in which the operating member is connected to a valve closure by. means of a quick-pitch screw, whereby rotation of the operating member moves the closure toward or away from its seat.

In valves of the character. above mentioned, it sometimes occurs that the fluid pressure to which the valve closure is subj ected when closed, and which tends to move the closure from its seat, reacts against the operating member, and by virtue of. the screw connection rotates said operating Y member sufliciently in the valve-releasing direction to permit the valve to be moved from its seat to open the'port through the casing when it is desired that the valve should be kept closed.

It is one of the objects of the present invention to provide an' improved and simplified means whereby the valve will be held to its seat, and pressure against the valve tending toopen the same will not result in the operating means being moved to permit the valve to open.

A further object is to provide a locking shown a preferred embodiment of the inven tion, and in which Figure 1 is a longitudinal section through a valve embodying my invention, the parts being shown in position wherein a valve member is held in closed relation to its seat or ort;

ig. 2 is a sectional longitudinal section showing the position assumed by the parts when the same are operated. to move the valve from its port or seat into open position, and

Fig. 3 is a detail plan view of a locking invention.

disk constituting one of the elementsof the Referring to the drawings by characters of reference, 1 designates a casing having any suitable external design or contour, and provided with an inlet nipple or .port 2 and an outlet nipple or port 3 which are adapted to be connected, in any suitable manner, to conduits or pipes conveying fluid to and from the casing. Surrounding the inlet port is an annular valve seat 4 surrounded by an annular upstanding rib or bead 5 with which a valve closure, to be presently described, 00- operates to control flow from the inlet through the casing. Opposite to and in alinement with the inlet nipple or port 2, the casing is provided with a nipple 6 connecting with the chamber of the casing, in the present embodiment said nipple being externally threaded, as at 7. 1

Within the casing and movable toward and from the valve port 4 is a valve closure 8, preferably of the disk type, the same beor holding means; which will permit free to be presently described. The lower porwhich will be particularly pointed out and distinctly claimed.

In the accompanying drawings I have tion of. the disk valve. is provided with an integral, threaded stud 12, which is surrounded by an annular recess 13, in which is seated a packing washer 1 1 formed with a central aperture 15 through which said stud 12 projects. The disk 1 is'held in place in said recess 13 by means'of a washer 16 and clamping nut 17 mounted on said stud 12. l 1' /Threaded, as at 18, ;on the boss 10, is a coupling sleeve 19, the upper inner portion of which is provided with an internal quickpitchscrew thread 20, which meshes, with a cooperating thread 21 on a head 22 carried by a rotatable and longitudinally movable operating member, preferably in the form of a stem 23, which projects through the upper open end of the valve chamber and lS'PlOVlClBd. with a hand lever 2 L, or other suitable means, by which said operating member may be rotated. The upper open end of the casing is closed by a bonnet or cap nally-threaded flange 26 cooperating with the threads 7 on the nipple 6, said bonnet or cap being provided with a central opening- 27 through which the upper end of said operating member projects. The bonnet is provided with internal, annular stepped surfaces 28 and 29, respectively, which are concentric with the casing, and the. latter of which lies over the upper edge of the said a nipple 6. a

Arranged within the casing and surrounding the said stem 23 and the sleeve 19, is a packing or sealing element, preferably in the form of an expansible and collapsible element consisting of an annularly--corru- 19, heretofore described. The upper end of the said bellows is connected and sealed to an outwardly-pro'ecting annular disk or plate member 31, t e outer portion of which is clamped and sealed securely between the upper end of the nipple and the surface 29 of the bonnet, heretofore described. The outer or peripheral portion of the washer 30 is arranged in a higher plane than the 'inner portion thereof, so that the upper surface of saidouter portion will be above the point of connection of said washer with the bellows. It will be seen that the valve is sealed against the ingress of fluid into the said bellows at the .point of its connection with the valve disk, and the escape of fluid from that portion of the chamber which surrounds the bellows is prevented, due to the fluid-tight joint made between the annular disk 31 and. the casing at the point where the said disk 31 is clamped between the bonnet 25 and the nipple 6.

The upper end of the stem or operating member, at a point within the casing and preferably withinsaid bellows, is provided with a fixed stop, preferably in the form of a shoulder or collar 32 formed integral with said stem, and that portion .of the stem between said shoulder and the operating handle is threaded, as at'33.

- 34; designates a locking, member in the preferred form, consisting of a resilient metalhc disk, circular in form, and having a 25 having a depending, inter-- central aperture 35' throughwhich the threaded end portion 33 of the stem is projected, said disk being clamped rigidly at its central portion against the shoulder 32 by a sleeve 36 threaded onto the threaded upper end of the valve stem, said sleeve being 'slidably and rotatably mounted in the opening 27 in the bonnet 25. By this arrangement the disk 34 is held against longitudinal and rotary movement relative to the operating member. The locking disk 34 overlies the upper portion of the bellows and is of such diameter that its peripheral portion projects into the space between the outer face of the said ring 31 and the surface 28 and overlaps said surface, as will be apparent from the drawings.

In the preferred embodiment shownand described, the diameter of the disk 34, and the diameter 1 of the bonnet, and the area of the contacting surfaces on the disk and the face 28, are so proportioned that a large and effective frictional contact will be afforded between said disk and surface so as to efl'iciently hold the valve to its seat.

The arrangement of the parts in the preferred embodiment being as above described, the operation of the variousparts and their functions are as follows:

When it is desired to close the valve to the position shown in Fig. 1-, the operator rotates the operating member or stem to cause the valve disk to move toward its seat. During this movement the disk 34 maintains the general turns freely in the space between the upper face of the ring 31 and the surface 28 until the valve disk positively engages its seat 5 to close the port through the latter, and upon further rotation of the handle the stem, under reaction of forces, will move longitudinally and outward, that is, away from the valve disk, which will result in the peripheral portion of the disk 34 being brought into strong frictional contact with the surface 28, and continued movement of the valve stem in the outward direction will flex the central portion of the locking disk out ward, as shown in Fig. 2, whereby the peripheral portion of the locking disk is held 115 in yielding-frictional contact with the surface 28. It will thus be seen that when thevalve is held to its seat the locking disk will be in strong and yielding frictional engagement with the part 28. so that any pressure 120 of the fluid against the under face ofthe valve tending to unseat the same, will be prevented from rotating the valve stem, the latter being held against rotation by thelocking disk.

When it is desired to open the valve, the operating member or stem is rotated in the opposite direction from that heretofore described. which will result in the tension. on the spring disk being relieved, so that the sition shown in Fig. 2 and friction between said disk and the part 28 is reduced or removed, and the stem may be rotated freely to move the disk to open position. It is to be noted that the spring disk is so connected to the stem as to rotate therewith, and also so that the central portion of the disk is flexed when thereactive movement between the valve and the stem causes the latter to move longitudinally.

It will be seen that when the valve is in closed relation to its seat, it is yieldingly urged to and held in this position the resilient disk 34, so that any expansion or contraction of the parts, due to temperature changes, will not result in the valve being separated from its seat.

What I claim and desire to secure by Letters Patent of the United States is 1. A valve comprising a casing containing a seat, a valve closure cooperable with said seat, an operating member for moving the valve closure relative to said seat, a friction contact surface in the casing, a resilient metal disk held at,its central portion on said operating member, and means whereby longitudinal movement of the operating member when urging the closure to its seat moves said resilient disk into fric-.

said stem moves said disk to yieldingly and 'frictionally contact said annular surface.

3. Avalve comprising a casing containin a seat, a valve closure cooperable with said seat, a stem for moving the valve closure relative to said seat, an annular sur- I face in the casing and concentric with said stem, a resilientmetal disk ,fixed at its central portion on said stem, and means whereby longitudinal movement of the stem when urging the closure to its seat flexes said disk into frictional engagement with said surface.

4. A valve comprising a casing containinga seat, a valve closure cooperable with said seat, a rotatable and longitudinally movable stem for moving said closure relative to its seat, an'annular surface in the casing and concentric withsaid stem, and

a resilient metal disk fixed' to thestem toa rotate therewith and arranged with its peripheral portion in overlapping relation to said surface, the arrangement being such that longitudinal movement of said stem flexes said disk to yieldingly and frictionally contact said peripheral portion with said annular surface.

5. A valve comprising a casing containing a seat, a valve closure, a rotary stem, means connecting said closure and stem whereby rotation of the stem moves said closure relative to-its seat, an annular spring disk connected at its central portion to said stem to rotate therewith when the valve is moved toward its seat, and an annular surface carried by the casing and adapted to be frictionally and yieldingly engaged by said disk when the closure is engaged with its seat.

6. A valve comprising a casing containing a seat, a valve closure, a rotatable and longitudinally movable stem, a threaded connection between said stem and closure whereby rotation. of said stem moves said closure relative to said seat, aspringmetallic disk connected at its central portion to said stem to rotate therewith, and an annular surface on the casing and against which the said disk is yieldingly urged to hold the stem against rotation when the closure is heldto its seat by said stem.

7. A valve comprising-a casing containing a seat, a valve closure, a rotatable and longitudinally movable stem, a threadedv connection between said stem and closure,

whereby rotation of said stem moves said closure relativeto said seat, a spring metals lic disk, and means for connecting the disk at its central portion to. said stem so as to rotate with the stem and move longitudinally therewith, the casing having an annular surface against which said disk is flexed by longitudinal movement of the'stem I upon engagement of the closure with said seat.

8. A valve comprising a casing containing a seat, a valve closure, a rotatable and longitudinally movable stem, a threaded connection between said stem and closure whereby rotatlon of sald stem moves-said closure relative to said seat, a spring metallic disk,means for connecting the diskaat its'central portion. to said stem so as to I rotate with the stem and move longitudi-v nally therewith, and a bonnet onthe casing and having an annular surface against the closure with said seat.

9. A valve comprising a casing having a seat,'a valve closure, a rotatable and longitudinally movable stem, a threaded connection between said stem and closure whereby rotation of said stem moves said closure rela- ,tiveto said seat, a collar on the stem, a spring metallic disk 1 having. a central opening through which said stem extends, and-asleeve threaded onto said stem and clamping said disk rigidly against said collar whereby said' disk rotates with said-stem" .which said disk is. flexed by longitudinal movement of the stem upon engagement ofand moves longitudinally,a therewith, the casing havin an annular surface against which said isk is moved and 'ieldingly held by longitudinal movement 0% the stem upon engagement of the closure with said seat.

10. A valve comprising a casing having a seat, a closure coo erable with the seat, a stem for moving t e closure relative to said seat, said stem being rotatable and longitudinally movable, a spring disk fixed at its central portion to said stem, an annular part on the casing adapted to be en? .gaged by the peripheral portion of the disk, and means whereby longitudinal movement of the stem due to reaction when said stem moves the valve onto its seat to flex said disk to cause the latter to engage said an nular part to preventrotation of the stem. I

11. A valve comprising a casing contain: ing a seat, a valve closure, a rotatable and longitudinally movable operating member, a

threaded connection between said operating member and closure whereby rotation of said member moves said closure relative 'to 25 said .seat, an expansible and collapsible element connected to the valve disk, a member closing the casing and securing said expansible-collapsible member in sealed rela-' tion thereto, an annular friction surface on 30 said member and facing the valve, and a spring disk rigidly connected at its central portion to the operating member and adapted to be flexed against said annular surface by movement of the operating member 35 upon engagement of the valve closure with its seat.

In witness'whereof, I have hereunto subscribed my name in the presence of two

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