US728848A - Construction of high-pressure water-taps. - Google Patents

Description

No. 728,848. PATENTED MAY.2 6,'1903.7 W. BRADLEY.

CONSTRUCTION 0F HIGH PRESSURE WATER TAPS.

APPLICATION FILED DEO. 3, 1901.

Illlllllllll UNITED STATES Patented May 26, 1903.

PATENT 1 FFICE.

WILLIAM BRADLEY, OF SHEFFIELD, ENGLAND.

CONSTRUCTION OF HIGH-PRESSURE WATER-TAPS.

SPECIFICATION forming' part of Letters Patent N o. 728,848, dated May 26, 1903.

Application tiled December 3, 1901. Serial No. 84,504. (No model.)

To all whom t rrr/ay concern:

Be it known that I, WILLIAM BRADLEY, a subject of the King of Great Britain, and a resident of' 18 Collegiate Crescent, Sheffield, county of York, England, have invented certain newand useful Improvementsin the Construction of High-Pressure Water-Taps, of which the following is a specication.

The object of myinvention is to produce a tap the valve of which shall open suddenly to its full extent and shall close suddenly and which shall be retained in both positions by the pressure of the water in the body of the tap.

Referring to the drawings which form a part of my specification, Figure l is a vertical section of a tap made according to my invention. Fig. 2 is a vertical section of a tap modified in its construction, and Fig. 3 is a sectional detail illustrating more clearly the construction of the valve.

The invention relates more particularly to the construction of fioat-actuated taps; but it may be applied to bib-taps and the like, it' desired.

By my invention the valve will open instantly to the full extent and will close suddenly when the water has risen to the desired height, the characteristic feature being that the valve is first released from its vseat by the action of the oat-lever and then is opened to its full extent by water-pressure and held open. In its opposite action the valve is drawn down by the action ot' the float-lever until when nearing the seating it is suddenly closed by the water-pressure and held closed.

In the drawings, I is the inlet, and O the outlet.

Vis the valve; R, the valve-rod; L, the end of iioat-lever; M, the mouth of the outlet O; C, the valve-chamber; P, stifling parts; G, guide-piece; B, body of tap, and W W are waterways through the guide-piece. A

The moving parts of the tap are the valve V, with its rod R, and connected guide-piece G.

The construction of the valve is shown more clearly in Fig. 3, in which it will be seen that the Valve-rod R is provided with anv annular shoulder r and a threaded portion r above the shoulder. A Washer is placed upon this threaded portion and is clamped against the shoulder by a disk o, having a threaded opening screwed upon the portion r. In order to hold the outer edge of the washer, a threaded ring s engages the threaded exterior of the disk or nut o, and this ring is provided with an inwardly-extending flange s, bearing against the under surface of the outer edge of the washer. The guide-piece,which is tubular, slides upon the tubular upper part of the outlet O and has two waterways W leading from the chamber C to the under side of the valve. The periphery of the guide-piece immediately below the waterways W and the annular edge P of the reduced diameter of the chamber O when together act as a stifling-point and diminish the flow of water from the inlet to the outlet. Thus when the tap is in working order water enters at I and, passing through the loosely-iitting parts, occupies the chamber O and adjacent spaces and holds the valve Viirmly vupon the mouth M of the outlet O. When the cistern is emptied, the iioat and lever L descend, and its nose N eventually comes in contact with the top of the elongated slot S in the rod R and raises the Valve V from the mouth of the outlet. This causes a rush of water through the Waterways W against the under side of the valve, which forces it upward to its full extent. In this movement the action of the water is reversed,

the pressure in the first instance holdingv the valve down and afterward holding it up until it is drawn down byasuperior force. When this superior force is applied by the iioat-lever, the nose of which (as the water rises in the cistern) eventually cornes in contact with the bottom of the slot in the rod R, the valve is drawn down until, as it approaches the mouth ot' the outlet, the stilie parts P come near together and so diminish the flow of water that a balance of forces or a point of equilibrium is reached, and the pressure of the water above the valve, aided by the iioatlever, suddenly overcomes the resistance of the diminishing outiiow on the under side of the Valve and shuts it down'. Y

In Fig. 2 I have shown a tap in which I employ an additional valve or disk D upon the valve-rod R and located, like the valve in Fig. l, above the inlet I, the valve in this case being situated below the inlet in the chamber O. The said diskv D opens and IOO \nected valve to its full extent.

closes the waterways W from the inlet to the outlet, and the parts P and the lower edge of the disk act as stiliing parts. The valve V closes against the mouth M of the tubular outlet O,and the nose N of the float-lever L engages with a slot S in the rod R, as in Fig. l. In this tap when the valve (with its rod and disk) is raised from the mouth of the outlet O, permitting an escape of water from the outlet, the water from the inlet drives the disk D up to the top of its chamber and opens the con- When closing, by the action of the lever L, the ,flow is stifled by the disk and parts P, and the valve suddenly closes vand is held closed by the pressure of water upon its upper surface, it being understood that neither the opening through which the rod R moves nor the fit of the disk D are made water-tight vvor prevent its passage into the chamber C. l

In applying my invention to a tap to be operated by hand a suitably-formed finger-lever would replace the float-lever L and would be connected with the valve-rod R where preferred. In regard to theopening of the valve it may be noticed,however, that the slot Sin the lower end of the valve-rod is longer than the width ot' the arm N of the float-lever, so that there is a limited movement allowed to the one part without affecting the other.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent., is-

1. In a high-pressure water-tap, the combination with the casing having a valve-seat, of a Valve having a suitable stem or rod, a oatlever having a loose connection with said rod whereby a limited movement of said parts with relation to each other is permitted, an annular stifie-wall or part in proximity to the water-inlet and a lnovable part connected with the valve to move therewith, said stifle and movable parts serving to materially restrict the water-inlet when the valve is near its seat but not seated thereon, substantially as described.

2. In a high-pressure water-tap, the combination with the casing, having a valve-seat and a water-inlet around said valve-seat to a space above the valve, of a valve having a suitable stem or rod, a float-lever having a loose connection with said rod whereby a limited movement of said parts in relation to each otheris permitted, an annular stifle-Wall valve-seat serving to contract said water-inlet, and a movable part connected with the valve and cooperating with said stifle-wall to materially restrict the inflow of AWater when the valve is nearing its seat but not seated thereon, substantially as described.

3. In a high-pressure water-tap, a casing, an annular wall within the casing providing a water-outlet and a valve-seat at the upper edge of said wall, a water-inlet at the side of the casing communicating with the upper part of the casing through the annular space encircling said wall, a valve in the casing coperating with said valve-seat, a flange projecting inwardly from the casing in proximity to the water-inlet, a movable iiange or wall connected with the valve and cooperating with said flange on the casing to restrict the waterinlet, a valve-rod depending through the Water-outlet and a float-lever having a loose connectionV with said rod, substantially as described.

4. In combination the valve-casing having a water-inlet in the side thereof and an npwardly-extendin g tubular wall within the casing forming a water-outlet, said Wall extending above the water-inlet and providing a valve-seat at its upper end, a valve coperating with said valve-seat, an annular guiding portion for said valve encircling said tubular portion and guided thereon, said annular portion having a water-passage, a stifling-ange on said annular portion, a corresponding stifling-ange on the casing in proximity to the `water-inlet, and means for imparting initial opening or closing movement to the valve, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

WILLIAM BRADLEY.

Witnesses:

ROBT. F. DRURY, BERNARD E. DRURY.

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