US469231A - Pressure-regulator - Google Patents

Description

(Model. 2 Sheets-Sheet 1. G. H. BURTON. PRESSURE REGULATOR. No. 469,231. Patented Feb. 23, 1892.

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. i- I v 1 UNITED STATES PATENT OFFICE.

CHARLES H. BURTON, OF cLEvELAND, OHIO.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 469,231, dated February 23, 1892;

Application filed July 25, 1890. Serial No. 359,860. (Model) .To aZZ whom it may concern.-

Be it known that 1, CHARLES H. BURTON, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new Improvements in Pressure-Reducing Valvesfor Steam- Engines and other SimilarPurposes, of which the following is a full description.

My invention relates to pressure-regulatin g valves; and it consists of a special construction whereby the making of the ports is facilitated and the strength and operation of the parts are improved.

My invention is illustrated in the accompanying drawings, in which- Figure 1 is a longitudinal vertical section of the said valve. Fig. 2 is an exterior view of the valve chamber or cylinder with the yoke and part of the device removed. Fig. 3 is a reduced outline sectional view showing the method of 'operating said valve, with a lever and weight in the place of the spring and screw, as shown in Fig. 1. Fig. 4 is a view of the piston-valve detached. Fig. 5 is section on line 00 a: of Fig. 1.

The construction of the casting, which includes the pressure-chambers, the valve-cylinder, and the ports, is shown in general out line in Fig. 2, the details of construction being illustrated in the section of Fig. 1. In that figure it will be observed that the main casting is in a single piece, and in this inletport G is directly opposite and in line with the exit-port H, so that the valve may be put in the line of pipe without the necessity of using an offset. The piston-cylinder extends from top to bottom across the line of the inlet and outlet ports, crossing the inlet-chamber. The upper part of the cylinder, as shown in the figure, is in the solid part of the casting, the lower part being interrupted by the valve-passages, but continuing through the partition-wall Z and m and through or into the lower wall 0. The intermediatepartof the valve-cylinder between the ports G and H is formed by a ring J, which is supported in its place by bracketsj, connectin it directly with the outer wall of the castihg, the brackets being in the plane of the ring. As shown in Fig. 1, there is an annular passage left above the ring, and also an annular passage below the ring, the upper passage being directly in communication with an annular passage through the wall Z m left around the reduced part of the valve and between said reduced part and the wall of the valve-cylinder. The communication between the upper and lower passages above and below the ring is nearly a continuous annular passage behind the ring, this passage behind the ring being interrupted only by the thin brack etsj. As it is shown, the lower end of the casting is closed by a plate, and the ring, with its brackets, may all be cast integral with the main casting. The lower end of the piston is of full size, and the piston is provided with equal bearing-faces at the upper and lower extremities of the cut-away portion. The valve is provided at the lower extremity with an annular flange d flush on the outer surface with the full periphery of the valve, and above this is a ring d, which is supported on the reduced part of the valve by brackets p, which only slightly interrupt the otherwise complete annular passage Z around the reduced part of the valve. The ports in the valve are above and below this ring, and these are continuous and annular. lVhen the valve is lifted by the pressure of the fluid below or upon the end of the valve, the annular walls or rings of d move over the ports above and below the ring J. The effect of this construction is, first, the opposite lineal location of the inlet and outlet, and, second, the diminished movement of the piston on account of the lateral extension arising from the annular shape of the ports, this longitudinal movement of the piston covering or inclosing a given amount of portspace with less movement of the valve as compared with regulators heretofore known, and, further, in respect to the construction it is simpler to make and stronger and more durable. The end of the casting is covered by a head F 5 but in this end is a chamber formed in the end of,.the cylinder, or as a continuation of the cylinder-bore into which the end of the valve enters. A narrow passage 1? leads out of this, and the cavity at the end of the piston is adapted to hold water, which, when steam is used,,is formed by condensation of the same in said cavity. sage t' communicates with this cavity, so that the water is slowly or gradually forced out Only the small paswhen the end of the valve moves down against the body of water in the cavity. This prevents any sudden shock in the operation of the valve. In the bottom of the cavity is a small knobf, which prevents the valve from shutting close down on the bottom of the cavity and closing the ports, leaving a space for 1 the action of the fluid on the end of the piston against the resistance of the spring or other power by which the valve is forced down. The partwhich forms the valve and its stem is marked A, and the stem or piston of the valve is marked a and plays in the cylinder A. This stem or piston is bored out, or its equiva lent, to admit the rod B, the point a of which rests in a hole I) in the lower part of the bore. The rod has an annular shoulder on its lower end, on which rests the lower end of the spring 0. On the upper end of the spring rests the head of the inverted screw D, which is bored out to receive the upper reduced end of the E and has a jam-nut I, and by this means the tension of the spring is regulated.

In the upper part of the casting about the stem of the valve is an ordinary stufiing-box. The openings in the casting are threaded to receive the end of the pipes. The number of the rings 01 may be increased, the construction'and operation being not thereby changed. The small port 12 connects the chamber H with the space in the valve-cylinder A under the piston or valve formed by said piston-valve resting on the knob f. This port. is always open, and when the required pressure is obtained in the chamber H the same pressure is exerted on the lower end of piston-valve d to force it up against the means for forcing the valve open. As soon as the pressure weakens in the chamber II it also weakens in thespace in valve-chamber A under the piston of valve, and then the power for forcing the Valve open is greater than the power eX- erted to close it and the piston will move down and again open the annular ports 9 and h and let more supply in the chamber H and outlet II. It will be seen that the space in the val ve-cylinder A A under the piston-valve has but one port'i leading to and from the same, and as there is very little movement of the valve there is not much circulation to and from this chamber, and when used for steam purposes it fills with condensed water, which is a great advantage for the reason that it cannot open with a jerk, the condensed water acting as a cushion or buffer.

When not in use, the lower piston cl rests on the knob f and the annular ports are wide open. The valve A is held in this position by the means for operating the valve against the required pressure that it is adjusted to. The initial pressure enters through the opening or induction-pipe G, passing into the valve-cylinder A between upper and lower pistons, and both being of the same diameter and connected together by the reduced portion 0 said pistons are balanced, the supply having no power to move the valve A until after it passes through annular ports g and h to the chamber H and from thence to the space in cylinder under the piston 61' through the port 1'. This port supplies the pressure to operate the valve, and as soon as the pressure in the chamber H rises to the required pressure the Valve will be raised against the means for forcing the valve open, and thus shut or close-the annular ports 9 and h, and the valve will remain shut as long as the outlet H retains the required pressure; butwhen the pressure weakens it weakens also on lower end of piston d and the means for forcing the valve open will have the power over the weakened pressure and force the valve down, opening the annular ports 9 and h, and let in more supply.

The valve A may be operated by a spring and adjusting-screw, as shown in Fig. 1, in which case a jam-nut I is used on the screw D above the yoke E to prevent it from moving after it is adjusted, or may be operated with a lever and weight, as shown in Fig. 3. In case a lever and weight are used a rod 3 passes from the lever Z into the hollow portion of the piston-valve having the point loin the center I), the lever Z bearing on the opposite terminal m of the rod j Either the spring and screw or the lever and weight may be used without departing from 'a valve therein having a reduced part, and a piston at the ends of said part whereby the Valve is balanced, means for holding said valve normally open, an induction-port to said cylinder, an outer annular chamber, an annular port between said Valve-cylinder and outer chamber, a confined space between the end of the valve and the bottom of the casing, a knob for limiting the movement of the valve, and a port leading to said space, substantially as described.

2. In a pressure-regulator, a valve-cylinder, a valve therein, an outer annular chamber, an induction-pipe leading to the valve-cylinder, annular ports between the valve-cylinder and the outer chamber, said ports presenting openings unobstructed throughout their circumference, a ring J intermediate of the ports, supported by arms from the outer wall of the outer chamber, a confined space beneath the valve, a passage leading from the outer chamber to said space, and means for holding the valve normally open, substantially as described.

3. In a pressure-regulator, a valve-cylinder, a valve therein, means for holding the valve norm'ally open, an outer annular chamber, an induction-port leading to the valve-cylinder, annular port-s between the valve-cylinder and the outer chamber,a flange d on the piston end for closing one of said ports, and a ring cl,

connected to the stem of the valve by spokes for closing the other port, said flange and ring presenting unbroken peripheries to close the annular openings, a ring J, a confined space below the valve, and a port between the outer chamber and said space, substantially as described.

4. In apressure-rcgulator, a valve-cylinder, a valve therein, an outer annular chamber, an induction-pipe leading to the valvecylinder, annular ports between the valve-cylinder and the outer chamber, said ports presenting openings unobstructed throughout their circumference, a ring J intermediate of the ports, supported by arms from the outer wall of the outer chamber, and means for holding the valve normally open, substantially as described.

5. In a pressure-regulator, a valve-cylinder, a valve therein, an induction-passage leading to the valve-cylinder, annular passages leading to the exit, a ring forming part of the cylinder, sustained by brackets arranged to leave an annular passage above it, and a ring supported by arms upon the reduced part of the valve, the parts being constructed and combined substantially as described.

6. In a pressure-regulator, a chamberor confined space arranged at the end of the valvecylinder to receive and hold Water, provided with a small opening adapted to permit the gradual egress of the Water, leading to the reduced-pressure side, and a valve arranged to enter the said chamber or space, substantially as described.

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

CHARLES H. BURTON. Witnesses:

W. H. BURRIDGE, W. A. BIDDLE.

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