US566108A

US566108A - Hubert k

Info

Publication number: US566108A
Authority: US
Publication date: 1896-08-18
Anticipated expiration: 1913-08-18

Description

(No Model.) 1

H. K. WOOD.

VALVE 172bni07w .Hubertff, Wood 5} ka sfliforn Patented Aug. 18, 1896.

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UNITED STATES PATENT OFFICE.

HUBERT K. WOOD, OF HARTFORD, CONNECTICUT.

VALVE.

SPECIFICATION forming part of Letters Patent No. 566,108, dated August is, 1896.

Application filed May 14:, 1895. Serial No. 549,255. (No model.)

To all whom it may concern.-

Be it known that I, HUBERT K. \VOOD, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Valves, of which the following is a specification.

This invention relates to valves, and more particularly to that class of valves known as float-valves, which are ordinarily used in connection with, and for supplying water to, flushing-tanks, the object of the invention being primarily to furnish a simple and efficient balance-valve adaptedfor automatically controlling the influx of water to, and for maintaining a predetermined level of water in, said tank, and to so construct and organize the parts of said valve as to facilitate the assembling and disassembling thereof, and also to enable the production of the same at a relatively low cost.

Another object of my present invention is to provide, in connection with the valve-cham-' her, a sliding valve member or piston fitted for relatively free sliding movements in said chamber, and having an interior balancingchamber, and also to provide, in connection with said chambered sliding valve member, a normally-fixed centering-guide adapted for engaging the interior of saidvalve member and for maintaining a fixed axial relation between the valve-face and the valve-seat, to thereby obviate, in a great measure, the friction inherent to valves having a packed or externally-guided sliding valve member or piston.

In the drawings accompanying and form ing part of this specification, Figure 1 is a sectional side elevation of a portion of a flushing-tank, showing my improved float-valve in connection therewith, said figure showing the float and valve-operating lever in an elevated position, or in the position they occupy when the water in the tank has reached the required level for closing the valve. Fig. 2 is a sectional side elevation of the float-valve, parts thereof being broken away and the sliding valve member or piston being shown in its closed position. Fig. 3 is aview of the valve similar to Fig. 2, showing the sliding valve member in its open position. Fig. 4 is a longitudinal section of the combined cap and Valve-centering guide detached, and Fig. 5 is a longitudinal section of the sliding valve member detached.

Similar characters represent like parts in all the figures of the drawings.

In the preferred embodiment of my invention herein shown and described the valve consists of a suitable casing or valve-body having communicating inlet and outlet passages or ports, and also having a valve-chamber of relatively large diameter, preferably in alinement with the inlet-passage, with a valve-seat between said inlet-passage and valve-chamber; a sliding valve member or piston fitted for relatively free movement in the valve-chamber and embodying aconcentric balancing-cylinder or pressure-chamber, having a relatively small communicating passage into the inlet-passage of the valve-body; a n0rmally-fixed centering-guide fitting the interior of the balancing-cylinder and constituting both a'centering device and a guide for the sliding valve member, and a float-actuated lever in operative connection with and adapted for opening and closing the valve relatively to the valve-seat, all of which will be hereinafter more fully described.

In the form thereof herein shown the valvebody, which is designated in a general way by B and which may be of any suitable general construction in so far as external conformation is concerned, has an inlet-passage 2 and an outlet-passage 4, opening the one into the other when the valve is open, and a valvechamber 5, herein shown as of relatively large diameter as compared with the inletpassage and in alinement with said inlet-passage.

The inner ends of the walls of the inlet passage 2 are shown as terminating in and forming the valve-seat 2, said valve-seat being of the usual tapered or knife-edged form, as shown most clearly in Fig. 3 of the drawlngs.

The upper end of the valve-chamber 5, which is the upper end of the valve-body proper, is internally screw-threaded, as shown at 3, to receive the screw-threaded portion 6 of a cap or plug 0, which is fitted to and closes this end of the valve-chamber 5, said cap 0 having a hexagonal head or integral nut 6, to which a-wrench maybe applied for member V, as will be hereinafter more fully described. This cap 0, in the form and organization thereof herein shown and described, not only constitutes a closing means for the end of the valve-chamber 5, but also constitutes a centering-guide for the sliding valve member V, and is non-movable during the ordinary operations of the valve member, and may herein-after be referred to as the com bined cap and valve-centering guide.

For the purpose of avoiding confusion, due to tautological terms as applied to various parts of my apparatus, the-member V, which practically constitutes the valve proper, is herein referred to as the sliding valvemember, and the apparatus as a whole, which includes said valve member V and its actuating devices, is herein referred to as the valve, as such apparatus is usually termed in the art.

The sliding'member V, in theform thereof herein shown, is in the nature of a cylindrical piston, the longitudinal passage-way therethrough being preferably of relatively large diameter at the upper end thereof, as shown at 7, to form what I have herein termed the interior balancing-chamber, and the lower or inlet end of said passage-way being'preferably reduced in diameter, and furnished with a plug 9, which has a longi tudinal inlet perforation 9 of relatively small diameter-in communication with the interior balancing chamber 7 of said valve member, said plug being preferably screwed into 'the'inlet end of the valve member V, as shown most clearly in Fig. 5, said screw having an external annular flange, which holds in place a packingring 8, preferably fitted into an annular recessin the lower end of the valve member V. This valve member V is devoid of external packing, and willusually have a comparatively loose sliding fit in the valve-chamber 5, so as to work freely insaid chamber practically without friction.

For the purpose of closing the outlet end of the interior balancing-chamber of the valve V against the passage of water through the valve and also for the purpose of guiding the valve and maintaining the same in axial working relation with the valve-seat 2the guidestem 6 of the cap 0, which stem extends into and is preferably of considerably less diameter than the diameter of the chamber 5, is provided at the lower end thereof with a packing-rin g 12, which projects beyond the periphery of the stem 6 and impinges the interior of the sliding valve member'V, said ring, which is preferably cup-shaped, being securelyheld relatively to the stem 6 by means of a headed screw 10, which is screwed into the lower endof said stem, as

clearly shown in Fig. 4; of the drawings, the

packing-ring 12 being impinged between the head of said screw and the lower end of said stem.

As a convenient means for actuating the valve to open and close the same, the sliding valve member V is herein shown having a circumferential groove 7, adapted to receive projections upon the ends of the arm 13 of a forked lever 13, which is shown fulcrumed at 13 upon an ear or lug 5, formed integral with the valve-body adjacent to the point of intersection of the valve-chamber 5 and the outlet 4, the valve-body B being recessed or cut away adjacent to the forked ends of the lever 13, as shown at 20, to facilitate the connection of the arms 13 with the sliding valve member V. The upper wall 21 of the recess 20 constitutes a stop-abutment for the arm 13-of the lever 13 and limits the valve-opening stroke of the lever 13. A connecting-rod 14 and afloat or ball 15 are shown secured to said forked lever for actuating the samethrough therise andfall of the water W in the tank T, as will be readily understood by reference to Fig. 1 of the drawings.

It will be evident that when the water in the tank is at its normal high level or at the level represented by the dotted line h the float 15 will be in its valve-closing position and the valve member V will be held with its packing-ring 8 in tightimpingement with the valve-seat 2 or in the position illustrated in Fig. 2 of the drawings and will be evenly balanced in such position by means of the fluid passing into the balancing-chamber 7 of the valve member V, through the inlet perforation 9, whereby the pressure on both sides of the valve is equalized; and it will also be evident that upon the lowering of the water in the tank the fioat will fall and will carry the valve member V from the closed position illustratedin Fig. 2 to the open position thereof illustrated in Fig. 3, thus allowing a supply of water to pass through the inlet-passage 2in the direction of the arrow, Fig. 2, and through the outlet-passage 4 and into-the tank T.

As the closing and opening movements of the valve member V are gradual, owing to the gradual raising and lowering of the water-line inthe tank, the variation of the area of the outlet-port will also be gradual and the increase or decrease of the volume of the stream caused by the contraction and expansion of the outlet-port will be correspondingly grad-u al, and by the formation of a balancingchamber within the walls of the valve member it will be seen that said member will be balanced on its seatand will also be held during its operation in axial alinement with the valve-seat and will be free for movement withshown and described it will be readilyap- IIO parent to any one skilled in the art that the parts of the valve may be made at comparatively low cost, and that said parts may be quickly assembled and disassembled, which is a matter of considerable importance with articles of manufacture of this class.

Having thus described my invention, what I claim is 1. A valve consisting of a'valve-body having an inlet and an outlet port communicating with each other when the valve is open, and having a valve-chamber above said inlet and outlet ports, and in alinement with the inletport, and also having a valve-seat; a valve member entirely within, and fitted for sliding movement in the valve-chamber, and having an interior balancing-chamber, and also having a communicating opening between said balancing-chamber and inlet-port in alinement and indirect,communication with said inlet-port; a normally freely removable valvemember-centering guide carried by the valvebody, and extending into and constituting a closure for the balancing-chamber of the valve member, and non-movable during the operations of said valve member; and means for operating said valve member.

2. The herein-described float-valve, it consisting of a valve-body having an inlet and an outlet port communicating with each other when the valve is open, and having a valvechamber in alinement with the inlet-port, and also having a valve-seat between said valve chamber and inlet-port 'a valve member fitted for sliding movement in the valve-chamber, and having an inlet-opening of relatively small diameter in alinement with the inletopening of the valve-body, and also having an interior balancing-chamber of relatively large diameter in alinement with the inlet of said valve member; a normally-fixed valvecentering guide carried by the valve-body and extending into, and constituting a closure for the balancing-chamber of the valve member; a lever fulcrumed upon the valve-body and connected with the valve member; a float carried by said lever; and a stop-abutment upon the valve-body in position and adapted for cooperating with, and for limiting the opening movement of, the valve-actuating lever, substantially as described.

3. In a valve, the combination of a valvebody having a valve-seat and inlet and outlet ports; a valve-chamber above said inlet and outlet ports; a sliding valve member entirely within the valve-chamber, and having an interior balancing-chamber having a communicating opening in alinement and in direct communication with said inlet-port; a normally freely removable guide carried by the valve-body and extending into the balancingchamber of the valve member, and non-movable during the operations of said valve member; and means for operating the valve member.

4. In a valve of the class specified, the combination with a valve-body having inlet and outlet ports, and a valve-seat; and also having a valve-chamber above the inlet and outlet ports, and in alinementwith the inletport of the valve-body; of a cylindrical valve member supported for sliding movement in the valve-chamber, and having a central interior balancing-chamber with a relatively small inlet, in alinement and in direct communication with the inlet passage of the valve-body; a plug closing the outlet end of the valve-chamber, and having a stem of relatively small diameter extended into, and closing the outlet end of the balancing-chamber of the valve member; and means in connection with,and adapted for automatically opening and closing said valve member, relatively to the valve-seat, substantially as described.

' HUBERT K. WOOD. Witnesses:

FRED. J. DOLE, R. W. PITTMAN.