US633626A - Valve. - Google Patents

Description

No. 633,626. I Patgnted Sept. 26, '1899.

Patented Sept. 26, |899.

J. STONE.

VALVE.

(Application led Nov. 7, 1898.)

2 Sheets-Sheet 2.

(No Model.)

UNITED STATES PATENT OFFICE.

JABEZ STONE, OF XVATERFORD, NEV YORK, ASSIGNOR TO THE LUDLOV VALVE MANUFACTURING COMPANY, OF TROY, NEV YORK.

VALVE.

SPECIFICATION forming part of Letters Patent No. 633,626, dated September 26, 1899.

Application tiled November 7,1898. Serial No. 695,655. (No model.)

To @ZZ whom 'it '1n/tty concern.'

Be it known that I, JABEZ STONE, a citizen of the United States, residing at Waterford, county of Saratoga, and State of New York,

have invented certain new and useful Improvements in Valves, of which the following is a speciiication.

The invention relates to such improvements; and it consists of the novel construcro tion and combination of parts hereinafter described and subsequently claimed.

Reference may be had to the accompanying drawings and the letters of reference marked thereon, which form a part of this 4r 5 specification.

Similar letters refer to similar parts in the several figures.

Figure l of the drawings is a view in side elevation of my improved valve. Fig. 2 is a zo central vertical longitudinal section of the same, taken on the broken line 2 2 in Fig. l. Fig. 3 is a horizontal cross -section taken transversely through the gates and main passage-way on the broken line 3 3 in Fig. l.

2 5 Fig. t is a similarcross-section taken through the gate-chamber on the broken line 4.- 4 in Fig. l. Fig. 5 is a similar view showing a modilied form of case. Fig. 6 is a face view of the valve-seat ring and valve-seat plates 3o in the relative positions occupied by such parts when located in the valve.

)lyinvention relates particularly to valves kof large dimensions and subjected to great internal pressure in use, and I have shown in the drawings a construction designed for a seventyeight-inch valve subjected to a pressure of six hundred pounds per square inch.

The objects of the invention are to strength- 4o 'en the various parts of the valve and to make the saine eective in operation.

Referring to the drawings, A represents the lower portion of the case, and A the upper portion of the same, which constitutes a5 the cover or bonnet, which parts may be secured together by bolts (not shown) in the usual or in any known manner. The lower section of the case is provided with the straightway passage A2. Located in one of '5o the branches of said passage-way is the partition or diaphragm A3, which is cast integral with the case and extends diametrically across said passage-Way. The case is provided with a valve-seat ring A4, mounted thereon, surrounding said passage-way, and with one or more seat-plates A5, mounted upon said diaphragm A3 and extending approximately diametrically of said ring in the same plane therewith. The valve-seat ring and valve-seat plate or plates together form 6o a pair of valve-seats in the same plane with each other, the ring being common to both seats. This construction permits of forming the ring and supporting the same upon the case in the usual manner, the plate or plates A5 being separately formed and fitted to the interior of the ring, where they are securely held by the lead packing A6 in suitable sockets formed in the diaphragm A3, the inner end of the plate and socket being of a dove- 7o tail form, as shown.

The valve-disk of my improved valve is preferably divided into two semicircular segments or gates B B, each adapted to coperate with one of the gate-seats formed by a semicircular portion of the seat-ring A4 and one of the seat-plates A and form therewith a tight joint.

The upper part of the valve-case forms a gate-receiving chamber adapted to receive 8o the gates and permit them to be raised above the main passage-way of the valve. Each gate is provided with a separate valve-stem B',Which projects upwardly through the cover of the valve-case and is adapted to be oonnected with mechanism whereby the respective gates may be moved toward and from their seats.` As the gates descend to points opposite their respective seats, each is forced tightly to its seat by the engagement of the 9o inclines B2 and B3 on the gate and case, respectively.

By reason of the great diam eter of the valvedisk or gates and the corresponding great size of the gate-receiving chamber the aggregate internal pressure upon the walls of the gate-- chamber is enormous, and as a means of reinforciu g said walls to enable them to withstand said pressure I provide a stay connection between said walls extending through the gateroo chamber. This stay connection can be conveniently located in the space between the disk segments or gates in the gate-chamber without interfering with the movement ofthe gates to and from their seats or with their properlocation within the chamber when ont of active use.

The stay connection between the walls of the case may be of any known form, two forms being shown in the drawings, wherein. the stay connection is shown cast integral with the casein Fig. 5 and in the form of staybolts in Figs. l, 2, and 4. In the latter construction the gate-cham ber walls are provided with a row of bolt-holes along the vertical middle line of each side wall adapted to receive the stay-bolts D, having their opposite ends projecting through such bolt-holes exteriorly of the case and the projecting ends screw-threaded and provided with nuts D', adapted to bear upon the outer surface of the case. Any desired number of stay-bolts may be employed.

The upper portion of the case is preferably formed with a vertical strengthening-rib D2, cast integral with and projecting from the outer side of the case, and the several boltholes are extended through this rib, whereby a less number of bolts is required to give the necessary strength to the casewalls than would be required if the case-wall along the line of bolt connections was of normal thickness. The stay-bolts are severally provided with inclosing thiinbles D3, adapted to bear at their opposite ends upon the respective inner surfaces of the gate-chamber walls and form tight joints therewith when the casewalls are drawn together by tightening the nuts D.

The valvecase may be provided with the usual horizontal strengthening-anges A7.

As a means for guiding the gates to and from their seats I provide the case-walls with the interiorly-projecting integral Hanges C, adapted to lap and guide the outer edges of the respective gates, and a guide-bar C', located between the gates and provided with the oppositely-projecting guide-anges C2, adapted to lap and guide the inner edges of the respective gates.

The guide-bar is secured to the seat-supporting diaphragm A3 by means of the screws C3, and is fui-'ther secured to the case by passing one or more of the stay-bolts through the bar, which is projected upwardly into the gate-chamber and its upper end interposed between the case-wall and one or more of the bolt inclosing thimbles, whereby the bar is tightly clamped between said thimbles on one side and the case-wall on the other, inaking tight joints around the several bolts.

I/Vhen desired, the seat-supporting diaphragm may be reinforced by another diaphragm A8, cast integral with the case and extending diametrically across the main passage-way at right angles to the diaphragm A3, as shown.

The case may be formed of any suitable material, as cast-steel.

Then the stayconnection between the walls ot' the gate-chamber is cast integral with the case,the oppositely-projectingflanges F may be cast integral with the stay connection F to form guides for the inner edges of the gates.

` I have shown in the drawings two gates of segmental form; but I do not wish to be limited to any particular number or form of gates employed.

What I claim as new, and desire to secure by Letters Patent, is- A l. In avalve, a valve-case havinga gate-receiving chamber, a plurality of Valve-seats in the same plane with each other, and a stay connection between the case-walls extending through the gate-chamber at right angles to the plane of the Valve-seats, substantially as described.

2. In a valve, the combination with a plurality of gates in the same plane with each other; of an inclosing valve-case provided with a gate-receiving chamber and having a stay connection between the case-walls extending through the gate-chamber at right angles to the plane of the gates and in a plane passing between the adjacent edges of two gates, substantially as described.

8. In a valve, the combination with a plurality of gates occupying a common plane; of a valve-case having a plurality of valve-seats occupying a common plane parallel with the plane of the gates, and a gate-receiving chamber inclosed on its sides and outer end by the case walls, said side walls being provided with bolt-apertures leading interiorly of the gate-chamber; and a stay-bolt secured in said apertures and extending through the gatechamber at right angles to the planes of the gates and seats, substantially as described.

et. In a valve, the combination with a valvecase provided with a gate-chamber and an exterior strengthening-rib and having bolt-apertures extending through the case-wall and rib; of a stay-bolt extending through the gatechamber and secured in the respective apertures in the case-wall and rib,.substantially as described.

5. In a valve, the combination with a valvecase and a transverse stay-bolt connecting the case-walls; of a thimble inclosing said bolt and adapted to bear at its opposite ends upon the inner surfaces of the respective casewalls, substantially as described.

6. In a valve, the combination with a valve' case having a main passage-way and formed with a diaphragm extending diametrically of said passage-way and cast integral with the case; of a valve-seat plate secured to and supported by said diaphragm, substantially as described.

7. In a valve, the combination with the case having a pair of valve-seats in the same plane with'each other, and a pair of gates movable toward and from the respective seats; of a guide-bar secured to the case, located between ICO IIO

said seats, and provided on its opposite sides -with guide-riangcs adapted to overlap and of gates, and a valve-case having a gateereceiving chamber; of a stay connection between the case-walls extending through the gate-chamber 5 and guides for the inner edges of the respective gates supported by said stay connection, substantially as described. In testimony whereof I have hereunto set my hand this 27th day of October, 1898.

JABEZ STONE.

Vitn esses:

GEO. A. MosHER; FRANK C. CURTIS.

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