US431413A - Valve for steam-pumps - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

A. J. SYPI-IER. VALVE FOR STEAM PUMPS.

No. 431,413. Patented July 1, 1890.

I NVEN TUR ATTEST m: norms PETERS co (No Model.)

I 3 Sheets-Sheet 2. r A. J. SYPHER.

VALVE FOR STEAM PUMPS. I

Patented July 1, 1890.

INVENTUR my my 3 Sheets-Sheet 3.

(No Model.)

3 A. J. SYPHER. VALVE FOR STEAM PUMPS.

No. 431,413. Patented July 1, 1890.

ATTEST ms NORRIS PEYUIS cm, PHOTO-LITHO., WASHINDTON, u. c.

UNITED STATES PATENT OFFICE.

ABRAHAM SYPl-IER, OF IRON MOUNTAIN, MISSOURI.

VALVE FOR STEAM-PUMPS.

SPECIFICATION forming part of Letters Patent N 0, 431,413, dated July 1, 1890. Application filed DeoemherZS, 1889.. Serial No.334,606. (Nomodeh) To all whomit may concern.-

Be itknown that I, ABRAHAM J. SYPHER, of Iron Mountain, Missouri, have made a new and useful Improvement in Valves for Steam Pumping-Engines, of which the following is a full, clear, and exact description.

The improvement relates to the means for operating the valve of the pumping-engine, substantially as is hereinafter set forth and claimed, aided by the annexed drawings, making part of this specification, in which- Figure 1 is an end elevation of a cylinder having the improvement; Fig. 2, a vertical longitudinal section onthe line 2 2 of Fig. 1; Fig. 3, a Vertical longitudinal section on the line 3 3 of Figs. 1 and 5; Fig. 4:,abottom view of the valve-chest, and Fig. 5 a plan of the cylinder having the valve-chest removed.

The same letters of reference denote the same parts.

A represents the cylinder; B, the valvechest; 0, the valve; D, the piston; E, the piston-rod; F F F, the steam-ports, and F the exhaust-port, all substantially as heretofore constructed, saving as the construction may be modified or supplemented by the improve ment under consideration.

The piston D has suitable packing -rings (1 cl, piston-heads d and follower cl. The packing-rings fit the cylinder in the usual manner. The piston-heads and follower are slightly smaller in diameter than the cylinder. The valve O in the present instance is substantially a stem 0, having four disks 0' 0 c 0 arranged as shown, and forming what I have heretofore termed a three-spool valve. The chest 13 is shaped to hold the valve and provide fori-ts movement, which is in the direction of its length, to which end there are compartments 1) b at the ends, respectively, of the chest for the disks 0' c to respectively work in. There is a central port 19 communicating with the steam-supply port F. There are ports 19 If, respectively, at the sides of the port b and communicating, respectively, with the steam-ports F F There are the exhaustports 1 b and there are the bridges 71 Z) 6 b, which separate the ports b b b b N, substantially as shown in Fig. 2. The stem (3 is smaller in diameter than the bridges, so that when a disk is not in coincidence with a bridge there is space around the stem for the passage of steam. At the ends, respectively, of the chest are ports b h through which alternately steam is admitted into the compartments b b to move the valve 0 to and fro in its seat, I

The means for operating the valve C are as follows: At the ends, respectively, of the cylinder A are piston-valves G H, adapted to be moved longitudinally in chambers g h, re-

spectively. The valve G seats at g and the valve 11 at h. A steam-passage g leads from the interior of the cylinder A, Figs. 1 an d 2, and into thechamber g at a point therein between the outer end g of the chamber g and the outer end of the piston g; of the valve G when that valve is unseated. Another steam-passage g leads from the inte-- rior of the cylinder A to the chamber 9 at a point therein between the inner end of the piston g and the valve-seat g when the valve G is seated. A steam-passage 9 leads from the valve-seat g through the shell of the cylinder to the point g Fig. 3, and thence the passage 9 is extended to connect with the port D in the valve-chest B. This extension of the passage g is in practice formed just at the partingbetween the cylinder andthe valvechest, substantially as shownv in Figs. 1 and 4that is, when the valve Gis unseated steam can pass we the passage g chamber g, passage g and port 11 into the compartment 12 and there act upon the disk 0 and cause the valve 0 to move to the left, as viewed in Fig. 2. At the opposite end of the cylinder A a steanrpassage 7L2 leads from the interior of the cylinder into the chamber h at a point therein between the outerend h of the chamber h and the outer end of the piston h of the valve H when that valve is unseated. Another steam-passage 7&5 leads from the interior of the cylinder A to the chamber h at a point therein between the inner end of the piston h and the valve-seat h when the valve H is seated. A steam-passage It leads from the valve-seat h through the shell of the cylinder to the point 71 Fig. 3, and thence the passage 7L6 is extended to connect with the port Z7 in the valve-chest B. This extension of the passage h is also in practice formed at the parting between the cylinder and the valve-chest, substantially as in Fig. 4that is, when the valve H is unseated steam can pass via the passage h chamber h, passage h, and port 12 into the compartment 1), and there act upon the disk and cause the valve 0 to move to the right, as viewed in Fig. 2. Saving in Fig. 1, neither cylinder-head a is shown in position. The improvement operates as follows:

In Fig. 2 the piston D is supposed to be moving to the right, and to be nearly, if not quite, at the end of its stroke, and it has moved in the direction named far enough to uncover the passage h for owing to the follower (1 being of the diameter described the steam can pass between the follower and the cylinder-shell, and thence into the passage h The steam enters the chamber h and 1 therein exerts apressure against the inner end of the piston 77. and thereby effects the unseating of the valve H. The steam then at once passes into the compartment 1) and causes the valve 0 to be moved into its position. (Shown in Fig. 2.) The live steam can now and does pass from the port F into the port 12 thence around the stem 0 into the port If, thence into the port F and thence into the cylinder between the piston and the right-hand end of the cylinder, in which position the steam acts in the usual manner to move the piston toward the left-hand end of the cylinder. The live steam also at once enters the passage 77. and thence into the chamber h, where, by pressing against theouter end of the piston 72. it causes the valve H to seat again. The live steam continues to enter the cylinder through the port F until the piston D has moved far enough toward the left-hand end of the cylinder to uncover the passage g whereupon the live steam enters the chamber g, unseats the valve G, and passes from the chamber g through the passage g into the compartment bflwhere it acts to move the valve 0 to the left, as viewed in Fig. 2. The live steam is now out off from the port F and is turned into the port F, and thence into the cylinder A, between its left-hand end and the piston D, causing the piston to move again toward the right-hand end of the cylinder. The live steam also at once enters the passage 9 and thence into the chamber and effects the seating of the valve G, and so on. Oheclc valves g h Fig. 3, can be used to prevent any back-pressure through the passages g h, respectively. The steam is exhausted from the cylinder A, and also from the valve-chest B, in the ordinary man-ner.

An additional feature of the improved construction is extending the valve-stem 0 outward through the shell of the valve-chest, substantially as shown at 0 Fig. 2, thereby to provide means whereby the valve-stem can be reached from the outside of the valvechest, and the valve 0 thereby readily adjusted into position to properly act in starting up the pumping-engine.

In carrying out this' improvement I prefer to use the three-spool valve 0 and to construct the steam passages leading from the chambers g h to the valve-chest B as shown; but I desire not to be restricted precisely thereto, for other forms of valves and pas sages may be employed. Neither do I wish to be confined to the particular construction of piston D shown in covering and uncovering the passages g h.

I claim- 1. The combination, with the cylin der-va1ve and the valve-chest having the ports b 11 at its opposite ends and portions of the passages or channels h g extending, respectively, from said ports to points h g in the lower face of said valve-chest, of the cylinder provided at its opposite ends with the valve-chambers gh, and having the openings g g and 7L2 71.5 extending, respectively, from its steam-space to the chambers g h, and portions of the passages g h extending from the inner ends of said chambers to the points 9 h respectively, and the piston-valves respectively moving in the chambers 9 7L and having seats at the inner open ends thereof, substantially as specified.

2. The eombination,with the valve 0, having the disks 0 c c c and the valve-chest having the ports 12 b b b 12 end ports b b, and portions of the passages or channels h 9 extending from the said end ports U Z1 to points h g in the meeting face of the valvechest, of the cylinder having the valvechambers G H, ports g g h2 if, and portions of the passages g h extending, respectively, from the inner ends of the chambers G H to the points g 7&7 to connect with the portions in the valve-chest, and the piston-valves respectively moving the chambers g h and having seats at the inner ends, substantially as specified.

Witness my hand this 16th day of N ovember, 1889.

ABRAHAM J. SYPHER.

Witnesses;

O. D. MOODY, B. F. REX.

Images