US1548122A - Radiator inlet valve - Google Patents

Description

Aug. 4, 1925. 1,548,122

c. A. DUNHAM RADIATOR INLET VALVE Filed April 5,.1922

' Maui, ym/WY WW InJenm Patented Aug. 4, 1925. v

UNITED STATES PAT CLAYTON A. DUNHAM, OF GLENCOE, ILLINOIS, ASSIGNOB T0 0. A. DUNHAM COMPANY,

I 01' MABfiHAT-ILTOWN, IOWA, A CORPORATION OF IOWA.

nanmroa INLET VALVE.

Application flied April 3, 1922. Serial No. 549,385.

To all whom it may concern:

Be it known that I, CLAYTON A. DUNHAM, a citizen of the United States, residing at Glencoe, in the colmty of Cook and State ofIllinois, have invented certain new and useful Improvements in Radiator Inlet ,Valves, of which the following is a specification.

My invention relates to radiator inlet valves, and it has for its object the provision of a new and improved form and arrangement of parts by reason of which a flexible diaphragm is utilized for providing a part1- tion for separating thevalve chamber from the operating mechanism by which the seating member is moved posltivelyinto and out of operative closing position.

The preferred means by which I have accomplished my several objects are illustrated in the drawings and are hereinafter specifically described. That which I believe to be new and desire to cover by this application is set forth in the claims.

In the drawings- Fig. 1 is a central vertical section through my improved valve;

Fig.2 is a horizontal section taken substantially at line 22 of Fig. 1. 1

Referring to the drawings, in which corresponding parts are indicated by the same reference characters, 15 indicates a casing preferably of cast metal, having a steam inlet port 16 threaded on its inner face, and an outlet port 17 threaded on its outer face, a nipple 18 of any approved type being secured to the outlet port 17 by means of the usual threaded cap 19.

In the fluid chamber 20 between the ports 16 and 17, I have provided closure means comprising a seating member 21 mounted within'an annular opening in the bottom face of a valve head 22. The seating member 21 in preferably made of hard fiber, and is held in position in the head 22 by the use of a screw threaded cap 23. Suitable means is also provided, as hereinafter described, for moving the valve head 22 vertically for carrying t e seating member 21 into and out of operative closing position with respect to a seat 24 provided by the casing 15.

The means for giving the valve head 22 its operative movement comprises a stem or spindle 25 having a cylindrical head 26 on its lower end which in the assembly of the valve is moved laterally into engagement with under-cut lugs 27 formed integrally with the head 22 in the form of construction illustrated. The spindle 25 is thus adapted to give said valve head a positive movement vertically for operating the seating member 21 positively, at the same time the s indle being free to rotate with respect to sai head 22. The means for moving the spindle 25 vertically comprises a second spindle member 28, the lower end portion of which has screw threaded connection with a sleeve 29 which in the construction shown is formed integrally with a cap 30 secured by means of screw threads upon the upper end of the casing 15. The upper end portion of the spindle 25 is cut away at its opposite sides so as to give it a flattened formation, and is further cut away at oppositely disposed points for providing a flattened head 31.

The lower end portion of the spindle member 28 is correspondingly cut out from one side for providing an undercut groove into which the head 31 is capable of being slid laterally, in the course of the assembly of the valve. By this construction, the two spindle members are caused to rotate together-and to move longitudinally in unison. Inasmuch as the rotation of the spindle member 28 causes it to move up and down within the sleeve 29, it will be understoodthat by this operation the seating member .21 may be moved into and out of operative closing posit-ion with respect to the seat 24. Inasmuch as the spindle-member 25 is revolubly connected with the valve head 22, this vertical movement of the head 22 and the seating member 21 may be effected without rotary movement of such parts.

In the construction shown, the spindle member 28 has mounted upon its squared upper end portion a plate 32 which is provided with lugs 33 on'its upper face engaging suitable sockets in a handle 34 of any approved type. A screw 35 is employed for holding the handle 34 in position, such screw having threaded engagement with a suit-able opening in-the spindle member 28. A closure plate 36 is provided in the handle 34 above the screw 35.

With my improved flexible diaphragm construction in use, the necessity for any packing about the valve operating parts is avoided. This improved flexible diaphragm, which serves as a partition for separating the fluid chamber 20 of the valve from the valve operating mechanism comprises a thin metal plate 37 having a downwardly turned flange at its outer edge about the upper end'oi' the casing 15, being clamped securely in position thereon by the tightening of the screw threaded cap 30. A second thin metal plate 38 is provided with a downwardly turned flange extending about the valve head 22, being preferably soldered in posit1on there on. Connected in series between the plates 37 and 38, there are a plurality of pairs of thin metal plates 39 and 40, each of which plates is flanged at both its inner and its outer edge portions for suitable connection with the adjacent plates, such connection being preferably effected by soldering. Each of the plates 37, 38, 39 and 40 is provided in the construction shown with a series of annular corrugations pressed therein, the arrangement being such that a very slight pressure suflices for expanding or contracting the drum-like diaphragm structure longitudinally thereof.

By the arrangement employed, comprising a considerable number of plates, upon a given movement of one of the end plates 37 and 38, with respect to the other end plate, each of the intermediate plates is given only a very small movement comparatively with respect to the adjacent plates, wherefore the life of the diaphragm is greatly prolonged as compared with a construction in which the relative movement of the adjacent parts is materially greater.

By the use of my improved construction in which the valve head 22 is moved positively in both directions by the valve operating means without relying upon the resiliency of the diaphragm for giving the motion in one direction, the stresses upon the diaphragm are very materially reduced, serving thus very materially to increase the life of the diaphragm. Inasmuch as the diaphragm is the only part which is subject to any appreciable wear, in addition possibly to the seating member 21 which can be readily replaced, this improved construction for prolonging the life of the diaphragm is of very great importance. Moreover, by relieving the stress upon the diaphragm as I have done, I secure a much more even movement of the valve head and the seating member, thus also reducing the wear upon the seating member.

By connecting the diaphragm directly to the valve head 22 at its outer edge portion,

I have provided that the head is held evenlyin position by the diaphragm so that the gasket 21 moves always in right lines into and out of engagement with the seat. This serves the double purpose of reducing Wear on the gasket and of preventing any twisting or sidewise stress on the diaphragm.

This is of very considerable importance in the matter of the life of the diaphragm.

So far as I am aware, I am the first in the art to provide a valve construction in which a gasket or other closure member is movable positively into and out of operative closing position and in which a flexible diaphragm acts as a partition for separating the operating mechanism for the valve completely from the fluid passing through the valve, and my claims are to be construed accordingly.

While I prefer to employ the form of construction illustrated in the drawing and above described, it will be understood that I do not wish to be restricted to the details of construction illustrated except so far as the same are claimed hereinafter, inasmuch as it is evident that various changes can be made without departing from the spirit of my invention.

I claim:

1. A valve comprising a casing, a valve head, a seating member carried by said valve head, a spindle having a head on its lower end, undercut lugs on said valve head engaging the head on said spindle serving upon longitudinal movement of the spindle to move the valve head for carrying the seating member into and out of operative closing position, a second spindle member in alignment with said first named spindle, detachable connections between said two spindle members adapted to cause them to move in unison both longitudinally and rotatively, means serving upon the rotation of the second spindle to give it a longitudinal movement, and a flexible diaphragm connected between said casing and said valve head acting as a partition for separating the fluid chamber of the valve from the said spindle.

2. A'valve comprising a casing, a valve head, a seating member carried by said valve head, a spindle revolubly connected with said valve head and adapted upon rotary movement alternatively in opposite directions to move said valve head positively for carrying said seating member respectively into and out of operative closing position, a flanged plate of thin metal connected at its outer edge with said casing, a second flanged plate of thin metal connected at its outer edge ortion with the outer edge portion of said valve head, and a plurality of pairs of plates of thin metal flanged at both their inner and their outer edges connected in series between said first and second metal plates for providing a closure between the fluid chamber of the valve and the operating means, said plates being provided with annular corrugations pressed therein.

CLAYTON A. DUNHAM;

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