US1140713A - Pressure-valve. - Google Patents

Description

B. 8. PRICE.

PRESSURE VALVE.

APPLICATION FILED MAYIB, 1914.

Patented May 25, 1915.

@- 5- PRICE attoww TERS CO, PHOTCHJTHQ. WASHINGTON. D4 C.

BINGHAIVI S. PRICE, OF BAWLINS, WYOMING.

PRESSURE-VALVE.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed. May 18, 1914. Serial No. 839,393.

To all whom it may concern:

Be it known that I, BINGHAM S. PRICE, a citizen of the United States, residing at Rawlins, in the county of Carbon and State of WVyoming, have invented certain new and useful Improvements in Pressure-Valves, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved pressure valve for use in heat generating systems and analogous purposes wherein adjustable pressure regulating valves are commonly employed.

The present invention has for its primary object to produce a device of the above type which is simple in its construction, efficient and reliable in practical use and capable of manufacture at comparatively small manufacturing cost.

In its more specific aspect the invention has for a further object the provision of a spring pressed regulating valve normally engaged upon a ground seat provided in the valve casing, and an auxiliary valve mounted in said spring seated valve closed by pressure against the latter valve in a direction to force the same from its seat, said auxiliary valve permitting the water to drain back through the pressure valve when the same is closed.

The invention has for a further object to provide a pressure regulating valve which absolutely precludes all possibility of water collecting above the valve when it is closed and freezing thereon so as to interfere with the proper operation of the valve.

With the above and other objects in View, the invention consists in novel features of construction, combination and arrangement of parts as will be hereinafter referred to and .more particularly pointed out in the specification and claims. 7

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a vertical section through a valve constructed in accordance with the preferred embodiment of my invention; Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is an enlarged vertical section showlng the construction of the auxiliary valve in detail; Fig. 4 is a detail perspective view of the movable valve member; Fig. 5 is a section similar to Fig. 3 showing a slightly modified form of the auxiliary valve; and Fig. 6 is a similar view illustrat ing a further modification of said valve. Fig. 7 is an enlarged detail section showing a slightly modified construction of the pressure valve.

Referring in detail to the drawing 5 designates the valve caslng which is of substantially T-shape form and provided with an inlet nipple or extension 6 and outlet nipple 7 These nipples are interiorly threaded to receive the inlet and outlet pipes indicated at 8 and 9 respectively. The casing 5 is provided with an additional interiorly threaded extension opposite to the nipple 6 to receive an adjustable plug 10. This plug is formed with a central longitudinal bore 11 for a purpose to be later referred to, and is provided upon its end face with a rectangular projection 12 for the application of a suitable wrench.

Upon the interior wall of the valve casing at the juncture of the inlet nipple 6 with the body thereof, a ground valve seat 13 is provided against which the beveled peripheral face of the valve disk 14 is normally seated. A cylindrical stem 16 is integrally formed with the valve disk 14 and is slidably engaged in the bore 11 of the adjustable plug 10. Between the inner end face of this spring 1 is arranged upon said stem and normally acts by its expansive force to hold said valve upon the seat 13. A plurality of guide fingers or lugs 18 are integrally formed lug and the valve disk 14 a coil upon the opposite face of the valve disk 14 and serve in connection with the stem 16 to threaded opening 191to receive an exteriorly threaded sleeve 20. This sleeve is also provided with interior screw threads for engagement by the exteriorly threaded valve seat member 21. This member is provided upon one end with an annular flange or head 22 in the outer face of which a groove erably formed to receive the point of a screw driver or other suitable tool whereby said seat member may be threaded into the sleeve 20. The member 21 is formed with a central longitudinal opening 23 to receive the stem 25 of the valve member 24. The lower end of the bore or passage 23 is ground out to provide a flared valve seat 26 for said valve member. The upper end of the opening 19 in the pressure valve disk 14 is en- 23 is preflarged to provide a recess for the accommodation of the head or flange 22 on the seat member 21. The lower end of the sleeve 20 is formed with a plurality of inwardly projecting lugs 27 upon which the valve member 24 normally rests and is supported.

The stem 25 of this valve member is preferably in the form of a plurality of radially extending spaced flanges as clearly shown in Fig. 4, and said stem is formed separate from the conical valve member 24 and provided upon one end with a threaded extension for engagement through a central opening in the valve member, said extension receiving a suitable nut 28 whereby the valve member and stem may be rigidly secured together.

From the above description, the operation of the device will be understood as follows: Assuming that the valve is employed in connectionwith a hot water heating system, the water rises in the inlet pipe 8 and presses against the valve 14. This pressure will first force the valve 24 against the seat 26 and close the opening 23 so that water can not pass therethrough into the outlet 7. When the water pressure increases, however, to a suflicient extent to overcome the action of the spring 17, the valve disk 14 will be forced from its seat so as to allow the water to pass from the inlet pipe through the valve casing into the outlet pipe. 9. The water pressure necessary to unseat the valve may be properly regulated bv simply adjusting the plug 10 against the end of the spring 17 and thereby compressing said spring between the plug and the valve 14. Said plug may be securely held in its adjusted position by means of a lock nut 29 which is threaded thereon and adapted for engagement against the end of the extension 5 on the valve casing. In case the pressure should become too great, the valve disk 14 will be lifted from. its seat so as to permit some of the water to collect in the valve casing 5 above the valve. As the pressure below the valve decreases, the valve member 24 will fall downwardly upon the lugs 27 so that the water may drain back through the opening 23 and past the valve member 24 into the pipe '8.

In Fig. 5 of the drawings I have illustrated a slightly modified form of the auxiliary valve. In this construction, the stem 25 is of tubular form and at its lower end is provided with an annular flange or shoulder 30 upon which a reduced threaded bolt 31 is formed.

32 designates a valve plate, preferably constructed of brass which is formed with a threaded opening for engagement with the bolt 31. This plate is provided in its upper face with a recess or seat 33 fora washer disk 34 of rubber or other suitable material. A nut 35 is threaded upon the bolt 31 to seconnection with curely clamp the washer 34 against the annular shoulder 30 on the valve stem and retain the valve plate 33 in position. The

water is adapted to drain back into the inlet;

The casing for this valve member is generally of the same construction as that above described, but the seat member instead of being provided with aground seat isformed around the edge of the opening through which the stem 25 is disposed with a raised rib or seat 37. When the valve is lifted by the water pressure, the rubber washer 34 is forced tightly against this raised seat so as to effectually close the opening through the seat member.

In Fig. 6 of the drawings I have shown still another form of the auxiliary valve wherein the valve stem 25 is appreciably smaller in diameter than the diameter of the opening 23 through the seat member.

The valve member on the lower end of this stem is in the form of the metal disk 38 having a ground seating face for engagement with the ground seat provided upon the lower end of the seat member 21. Either of these several forms of the auxiliary valve may be employed.

In Fig. 7 of thedrawings I have shown a slightly modified construction of the pressure valve, which corresponds to the valve structure shown in Fig. 5. In this construction, the valve stem 16' is provided at its lower: end with the annular shoulder 39 from which the threadedbolt 40 extends. The cup-shaped valve disk 41 is adapted to be threaded upon this bolt against the annular flange or shoulder 39' and receives the rubber washer 42. The guideor directing member '43 for the valve is detachably threaded upon the bolt 40 and a nut 44 is then threaded upon the bolt to lock the several parts together in connection with the valve stem. .A raised seat rib 45 for the valve is formed contiguous to the inner end of the inlet opening in the valve casing, against which the washer 42 is forcibly held by the spring on the valve stem to normally close said inlet. I

From the foregoing description taken in the accompanying drawing, the construction, A I several advantages of my invention will be clearly and fully understood. It will be seen that I have produced a very simple as well as highly efficient pressure regulating safety valve for hot-water heating'plants, and analogous purposes. By mounting the auxiliary drain valve in the pressure valve proper, water is prevented from collecting upon the inner face of the valve and freezing in the valve casing which would seriously interfere with and possibly" preclude manner of operation, and

' above set forth,

operation of the valve. By auxiliary valve in the manner the same may be very easily and quickly removed from the pressure valve disk when repairs are necessary thereto, and then replaced.

The device, as a whole, is very durable in its construction, and owing to the fact that the few parts employed are all of simple form, it will be appreciated that the invention can be produced at small manufacturing cost.

While I have above described the preferred form, construction, and arrangement of the several elements employed, it will be understood that the device is, nevertheless, susceptible of considerable modification therein, and I therefore reserve the privilege of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

What is claimed is:

1. In a pressure regulating valve, a valve casing provided with an inlet and an outlet port, a spring pressed valve normally closing the inlet port and adapted to be opened under pressure, said valve being provided with an opening, a sleeve removably arranged in the opening, a seat member detachably arranged in the sleeve, an auxiliary valve movable in'said sleeve and having a longitudinal fluted stem extending loosely through the seat member, the sleeve member being provided with stop lugs to limit the movement of the valve, the seat member having a seat formed thereon upon which the proper mounting the Copies of this patent open the valve,

may be obtained for five cents each, by addressing the the valve is forced by pressure against the pressure valve in a direction to lift the same from its seat, the auxiliary valve moving to its open position by gravity to permit water to drain from the valve casing through the opening in the pressure valve into the inlet port.

:2. In a pressure regulating valve, a valve casing having an inlet port and an outlet port, a valve arranged in the casing, a spring for normally holding the valve upon its seat, means for regulating the tension of the spring to vary the pressure necessary to said valve having an opening therein, a sleeve removably threaded in said opening, a seat member threaded in said sleeve and provided with a valve seat, an auxiliary valve arranged in the sleeve, the valve being provided with a stem consisting of a plurality of spaced blades extending the length of the stem and movable through the seat member, and stop lugs formed on the sleeve to limit the opening movement of the valve, said valve being forced against its seat by pressure in a direction to open the spring held valve, the valve member moving to its open position by gravity to permit water in the valve casing to drain through the pressure valve into the outlet port.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

BING. S. PRICE.

Witnesses:

J. A. BENNETT, A. G. MCINTOSH.

Commissioner of Patents.

Washington, D. G.

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