US2181581A - Self-closing measuring valve - Google Patents

Description

Nov. 28, 1939. JQ FRASER SELF-CLOSING MEAsumNG VALVE Filed July 2, 1938 INVENTOR 'J4/w15 /kqf/f A3 4 5 A J J J .2. .1', ,G G lvafr. www@ 5.4M ATTORNEY I Patented Nov. 28,1939

l2,181,581 n i SELF-CLOSING MEASURING VALVE.

` James Fraser, Edge Moor, D'el., assignor to Speakman Company, Wilmington, Del., a corporation of Delaware Application July 2, 193s, serial Nor. 217,152

3 Claims.

The general object lof the present invention is to provide an improved self-closing measuring valve structure primarily devised and adapted for use as a lavatory supply valve, and characterized by its mechanical simplicity and effec-r` tiveness, and by its quiet and ei'ective operation, and by the ease and accuracy with which it may be adjusted to vary the amount of water discharged by the valve on each normal actuation l0' thereof.

The various features of novelty Which char-k acterise my invention vare pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understandingof the invention, however, its advantages and specific ob-jects attained with its use, reference should be had to the accompanying drawing and descriptive matter in which I have illustrated a preferred embodiment of the invention.

1 outlet lchamber A2, with a lateral discharge spout A3 leading away from the chamber A2. The casingelement A is formed with an internal annular shoulder A4 between its inlet and outlet chambers A and A2, and against which the inner lower t end of a tubular valve guide and seat member C is normally clamped. The member C extends through an internally threaded opening A5 in the top wall of the casing element'A, and is in threaded engagement therewith. As shown, a gasket or washer A6 is interposed between the shoulder A4 and an annular flange portion of the member C, in abutting relation with said shoulder. The bore of the tubular member C comprises an upper plunger chamber portion C', separated by a gasket or packing C2 from a lower Water chamber portion C3. Water may enter the cham' ber C3 at its lower end through an axial port C4, and passes from the chamber C through latera-l ports C5 into the casing outlet chamber A2.

The flow of water from the casing inlet chamber A through the port C4 to the outlet chamber A2, is controlled by an axially movable valve member E, which in its normally closed position seats against a valve seat washer D, coaxial with the port C4, and clamped against the lower end into its closed position. Imovement of the valve E from its wide open to oi the valve member Cat the margin of said port. The valve vmember E is secured to the lower end ofk a coaxial valve stem E', which extends through chambers C3 and packing C2, and has its outer end secured to a plunger element F which exl?A tends into the plunger chamber C through the open upper end of the latter. v

The plunger F is externally threaded, and is screwed into an internally threaded socket formed in a push button member G of inverted cup shape, and having a lower rim or skirt portion G which is adapted to surround, and be in telescopic relation with the upper portion o1 the wall of the chamber C'. Rotation of the member G relative to the' plunger F, effects their relative adjustment in the direction of the length of the plunger, and thereby determines the extent of opening movement which can be given the valve member E, said extent being directly dependent on the distance between the upper end of the member C and the annular internal shoulder G2, extending inwardly from the outer end of the skirt portion G' of the member G, or, as shown, by the distance between the member C and the washer G3 forming a facing for said shoulder, and preferably formed of some suitable non-metallic material to avoid the generation of noise vwhen moved into engagement with the member C.

To permit the parts F and G to be readily adjusted relative to one another and to be secured v radially away from the member F, into a guide groove C'I formed in the inner wall of the plunger chamber C. 40,

A spring I, acting between the packing C2 and the plunger F, biases the. valve E for movement The time required for its fully closed position is regulated by timing means comprising a hollow element J formed with a pistonl chamber J coaxial with and beneath the member C, and having an enlarged upper end extension internally threaded to receive a short externally threaded lower end por- 50- outlet chamber A2, when the valve member E is out of its closed position. The lower end of the piston chamber J in the member J is closed except for an axial port J3 of small diameter. The speed oi the closing movements of the valve member E are controlled by a'timing or dashpot piston, which comprises a cup part K of leather, having its body, or cup bottom portion, clamped against the lower end of the valve member E, by a clamping member L, into which the lower end portion of the valve stem E' is threaded.

The members E and L are somewhat smaller in diameter than the piston chamber J and the cylindrical portion of the piston cup leather may move inwardly enough to permit water to pass freely upward past the piston from the lower end of the timing cylinder J', on the opening down movement of the valve E, so as to not significantly impede that movement. As the valve E moves in the closing direction under the action of its bias spring I, however, the cup leather` K expands into close Contact with `the cylindrical wall of the chamber J', and prevents ilow of water downward past the cup leather washer into the lower end of timing chamber J In consequence, the rat-e of the up, or closing, movement1 oi the valve E, is dependent upon the definite time period required for the piston chamber J to ll with water through the re- 1 stricted orice J3.

The clamping member L is provided with an axial extension in the form o a rod L slightly Smaller in diameter than the passage J3, which extends into the latter, so that the orice J3 is vsubjected to a cleaning action on each valve movement. As shown, the member J is formed with a chamber J4 beneath, coaxial with, and larger in diameter than the port J3, and communicating at its lower end with the inlet chamn -I ber A', through a screen J5, which prevents forlocation or the parts, when the valve mechanism is vertically disposed as shown in the drawing, and as is usual, but those skilled in the art ywill understand that the use of the invention does not require the valve mechanism to bev vertically disposed.

-. threaded portion the valve.

In the construction shown, all of the valve mechanism parts are mounted in or attached to the seat and guide member C and collectively form a vaive mechanism unit which may be bodily :mounted in the casing element and removed therefrom.

To facilitate the removal of the unit, the member C has a portion CG shaped for engagement by a wrench employed to thread the member C into and out of engagement with the A5 of the casing element. When the unit is detached from the casing, its movable parts can be moved, and their operative condition determined in many cases, without disassembling the unit.

The valve mechanism shown is positive in operation, free from hammering or chattering, and the valve member E is adapted to seat tightly, and thus avoid drippage, andthe restricted timing port J 3 is eectively cleaned on each operation of The advantages just referred to are obtained, moreover, with a construction which is relatively simple and compact, and which is characterized in particular by the ease and accuracy with which the extent of valve opening movement may be adjusted so as to thereby vary the amount of water discharged, on each normal operation of the valve.

The form and disposition of the push button member' G, is especially advantageous because the skirt portion G of the member extends over and forms a cover for the joint between the plunger F and the wall of the chamber C and thus forms a shield against the passage of dust or dirt into that joint and chamber, Furthermore, with the push button formed, and associated with a member C formed as shown, Ythe adjustment parts are made readily accessible, and are protected against contact with water, while at the same time the valve construction may be made compact and given a pleasing appearance,

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

l. A self-closing, measuring basin supply faucet, comprising a casing element formed with a lower inlet chamber, an upper outlet chamber, a chamber connecting portion, and a wall opening above said outlet chamber and a lateral discharge spout opening from said outlet chamber, and a Valve mechanism unit removably mounted in said element and comprising a member extending through said wall opening and across said outlet chamber and into said connecting portion, and forming a partition between said chambers with a valve controlled port therein, a valve movable downward away from, and biased for movement upward into engagement with said member to thereby open and close respectively and having a valve stem extending upwardly through said member, a plunger telescopically movable in the upper end portion of said member and connected to said valve stem, a push button mounted on and adjustableaxially of said plunger to thereby reg-- ulate the extent of opening movement of the valve which is terminated by engagement of said plunger and member, a hollow element detachably secured to said member and extending downwardlyl therefrom into said inlet chamber and comprising a timing chamber coaxial with said member and in free communication at its upper end with said inlet chamber and with said port when said valve member is out of its closed position, and communicating with the inlet chamber through a straight restricted passage formed in the lower end portion of said element, and a piston device connected to said valve and adapted to permit the relative free movement of liquid from the lower end of said timing chamber upward past said device on down movement of the valve, and to form a barrier to the flow of liquid downward past said device into the lower end ol said chamber'on up movement of said valve.

2. A self-closing,` measuring valve structure comprising a casing element formed with a lower inlet chamber, an upper outlet chamber and a wall opening above said outlet chamber, and a valve mecl'lanism unit removably mounted in said element and comprising a member extending through said wall opening and across said outlet chamber and'into said inlet chamber, and forming a partition between said chambers with a valve controlled port therein, a valve movable downward away from, and biased for movement upward into engagement with said member to thereby open and close, respectively, and having a valve stem extending upwardly through said member, a plunger telesccpically movable in the upper end portion of said member and connected to said valve stern, and comprising a lower'skirt portion surrounding and spaced away from the lower portion of the plunger and thereby providing an annular recess receiving the upper end of said member, non-metallic material mounted in the upper end of said recess in position tol engage said member when said push button is depressed to open the valve, a push butto-n mounted on and adjustable axially of said plunger to thereby regulate the extent of the opening movement of the Valve which is terminated by engagement of said plunger and member, a hollow element secured to said member and extending downwardly therefrom into said inlet chamber and comprising a, timing chamber coaxial with said member and in free communication at its upper end with said inlet chamber and with said port when said valve member is out of its closed position, and communicating at its lower end with the inlet chamber i through a restricted passage, andapiston device connected to said valve and adapted to permit the relative free movement of liquid from the lower end of said timing chamber upward past said device on down movement of the valve, and to form a barrier to the flow of liquid downward past said device into the lower end of said chamber on up movement of said valve.

. 3. A faucet as specified in claim 1, in which the restricted passage through which the timing chamber communicates with the inlet chamber, is an axial passage in the bottom wall of thetiming chamber, and in which a passage cleaning pin secured to the Valve extends into, but does not ll said passage. k

, JAMES FRASER.

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