US760449A - Valve. - Google Patents

Description

No. 760,449. PATENTED MAY 4,1904. e. GUY.

VALVE.

APPLICATION FILED FIBRE/1,1903.

N0 MODEL. 2 snnms-smm 1.

PATENTED MAY 24, 1904. G. G. GUY.-

VALVE.

APPLICATION rmm rm. :4, 1903.

2 sums-sum 2.

N0 MODEL.

Patented May 24, 1904.

UNITED STATES PATENT OFFICE.

GEORGE G. GUY, OF BATAVIA, ILLINOIS, ASSIGNOR TO UNITED STATES WIND ENGINE & PUMP COMPANY, OF BATAVIA, ILLINOIS, A CORPO- RATION OF ILLINOIS.

VALVE.

SPECIFICATION forming part of Letters Patent No. 760,449, dated May 24, 1904. Application filed February 24,1908. Serial No. 144,640. (No model.)

To all whom it may concern:

Be it known that I, GEORGE G. GUY, acitizen ofthe United States, residing at Batavia, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Valves, of which the following is a specification.

My invention relates to valves, and is especially concerned with a new and improved device of this general type which provides means for readily and easily opening the valvecontrolled outlet or passage in locations Where the pressure and resistance of the water against the movement of the valve is considerable and also provides a construction having a slowclosing method of operation.

My invention isillustrated in the accompanying drawings, which form a part of this specification, in which- Figure 1 is a sectional view of my improved valve, showing the parts in closed position. Fig. 2 is a view similar to Fig. 1, but showing the parts in the relative positions occupied by them when the upper portion or mem ber of the valve is opened. Fig. 3 is a similar view showing the positions of the parts when both members of the valve are opened, and Fig. 4 is a top plan view of the parts shown in the other figures.

Referring to the drawings by reference-let ters, A denotes the bottom of a suitable tank in which my improved valve may be used, the stave of the tank being represented by the ref erence-letter a, and the bottom being-provided with a suitable outlet at.

A suitable casting Bis provided, which furnishes the base or support for the various parts of the valve mechanism and which is provided with an opening or discharge-passage 7), which registers with the outlet a; of the tank when the casting is assembled in position upon the bottom or lioor of the tank. The base or support is provided with a collar 7/ at the discharge-passage, and this collar, which preferably is annular, supports a correspondingly-shaped valve-seat 6 which is composed, preferably, of Babbitt metal.

The base Bis slightly irregular in shape,

as shown, and is provided at one side of the discharge with a pair of standards or uprights If, which rise above the collar 7/ and provide bearings for the pivotedends of a suitable yoke, which projects over and within the line of the discharge-passage. The yoke is composed of the side pieces 6 and the cross-piece 6", the free or swinging ends of the yoke being bent upwardly at their extremities and united by the cross-piece or abutment U, which preferably is in the form of an antifrictionroller suitably carried by pinsor other journals on the ends of the side pieces.

The valve-seat b is provided with a suitable cap O for opening and closing the same. The cap is in the form of a ring or annular plate and is provided at opposite points with ears 0, to which the arms I) of the yoke are suitably secured by any suitable means, such as the bolts 0. The cap (1 is preferably formed of a casting and is provided with an annular undercut portion or groove 0 on its lower face, which receives an annular disk 0, preferably of vulcanized rubber, adapted to register with the valve-seat when the cap ,is loweredto its place, this disk being held in place by any suitable means, such as a securing or retaining ring c. The cap O is provided with a central passage or opening 0 which when the parts are in their closed position of Fig. 1 is in the same axial line with the discharge-passage 7), the passage 0 being of less diameter than the passage 6.

The passage c is provided with asurrounding annular collar 0, which carries a suitable valve-seat 0 preferably of Babbitt metal, the arrangement of these parts being substantially the same as in the valve-seat formed on the base or support B.

The opening or passage 0' is controlled by a cap or closure D, which is preferably in the form of a circular plate of such size and diameter as to extend slightly beyond the valveseat 0 when the cap is lowered to position upon its seat. The cap or closure D is provided with a closing-disk (1, preferably of vul canized rubber, the disk being held upon the under face of the cap or closure by any suitable means, such as the peripheral flange cl and the supporting-plate (Z the latter being of any suitableform adapted to clamp the closing-disk (Z in place and being secured to the cap D by any suitable means, such as the screw-bolt (Z The cap or closure D is operated by means of a lever d", which is suitably secured to the cap, as by means of the ears (Z and the bolt (Z The lever is pivoted upon a standard or upright (Z which preferably is arranged intermediate the standards or uprights b and projects above them. The forward or free end of thelever (1* passes under the roller 6 forming the forward end of the yoke of the lower cap. The upward movement of the lever (F is regulatedand limited by any suitable means, such as the upright cl", which passes through a loop or opening (Z8 on the free end of the lever and also serves as a guide to prevent lateral movement of the lever d and insure the accurate seating of the valve D. The upright carries an adjustable stop (Z10, which is held in the desired position upon the upright by means of a set-screw (Z When the valve is closed, the parts occupy the positions of Fig. 1. When it is desired to open the valve to discharge water through the outlet, the operator raises the lever 68*, and the initial effect of this lever is to raise the cap D to the position of FigIfZ, the cap C then remaining closed. This cap D being of relatively small diameter may be easily and readily raised by the operator, as the pressure of the water upon it is not so heavy as to impede the operation. The raising of the cap D allows the water to How through its associatedopening 0 whereby a vent is provided and the pressure of the water on the larger cap C is materially reduced, so that the labor of raising the larger cap from its seat in order to get the full benefit of the larger opening Z) is minimized. The further upward movement of the lever (Z* will cause it to contact with the roller or cross-piece b and raise the larger cap C, as indicated in Fig. 3, to open the valve to its full capacity.

When the valve is tobe closed, the lever (F is lowered, whereby the cap C is allowed to resume its place on the seat 6 while the cap D is still unseated, so that the water under pressure finds an exit through the opening 0 after the opening 6 is closed. The further downward movement of the lever (Z then closes the passage 0" as the cap D resumes its seat. By reason of the successive seating of the larger and smaller caps the reseating of the valve may be accomplished much more easily and with less strain than when a single opening is used. The water discharging through the outlet when the valve is fully open, as in Fig. 3, is upon both sides of the cap C,whereby the pressure on that cap is more or less equalized and its tendency to snap to its seat is reduced. The operator may therefore more easily hold the valve fully open, as the pressure of the water upon-it and its consequent tendency to snap shut are reduced. By this means an outlet of large diameter may be employed where the pressure is very great, as in railroad watering-tanks for locomotives. Also in closing the valve the initial closing of the cap C is accomplished withless strain on the operator where the pressure is heavy, as the cap D leaves an opening after cap C has seated, whereby the entire closure is not snapped down to its seat the moment the lever is released.

It will be seen thatthere isacertain amount of lost motion between the lever (Z* and the cross-piece of the yoke, whereby the cap D may be raised off its seat before the cap C is raised, and in the return movement of the .parts the cap 0 will seat before the cap D seats or while the latter is still otf its seat to allow the smaller passage to remain open.

In order to prevent the caps from rocking off their seats, they are provided withlugs or projections 0 and Cl, respectively, which will contact with the-respective operating-levers.

By means of my construction I can utilize a large discharge opening or outlet-as, for example, of twelve inches in diameter in a tank or supply device where the pressure is very great without subjectingthe operator to heavy strains and without danger of the pressure snapping the valve to its closed position prematurely.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a valve, the combination with a base having an outlet, a seat at the outlet, a cap adapted to said seat and having an aperture alining with the outlet, a pair of pivoted arms to which the cap is attached, an antifrictionroller journaled between the free ends of the arms, a second cap for closing the aperture in the first-mentioned cap, and a pivoted lever having attached thereto the second cap and extending under the antifriction-roller so as to engage the same when the lever is moved.

2. In a valve, the combination with a base having an outlet, a seat at the outlet, a cap adapted to said seat and having a central aperture, an arm pivoted on the base and to which the said cap is attached and which is provided with an abutment beyond the point of such attachment, a cap for closing the aperture in the first cap, and a pivoted lever supporting the closing-cap and being under and having in its path the abutment.

3. In a valve, the combination with a base having an outlet, a seat at the outlet, a capC adapted to said seat and having a central aperture, a pair of arms pivoted on the base and carrying the said cap and the ends of which are bent upwardly, a cross-piece uniting the ends of the arms, a cap D for closing the aperture in the cap C, and a pivoted lever supporting the cap D and extending under the said cross-piece.

4. in a valve, the combination with a base having an outlet, a seat at the outlet, a cap adapted to said seat and having a central passage, and apivoted yoke controlling said cap, oi a cap adapted to open and close said central passage, a lever controlling said last cap 10 and adapted to raise the yoke and having an I

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