US1556442A - Flush valve - Google Patents

Description

1,556,442 H. HoLcoMB ET Al. f

FLUSH VALVE oct. 6,1925- 1,556,442

L. H. HOLCOMB ET AL FLUSH VALVE Filed May 10, 1922 2 sheets-sheet 2 'Illlllll 'flllll @37.

Lamle'f H'Holcomlb Henry-Hauben,

dumm,

Patented oct. s, 1925.

UNITED STATES PATENT OFFICE.

LAMBERT H. HOLCOMB AND HENRY HA'UBENS, 0F OMAHA, NEBRASKA.

FLUSH VALVE.

Application I-ed May 10, 1922. Serial No. 559,831.

To all 'whom 'it may cof/wem: I

Be it known that we, LAMBERT H. HoL- GOMB and HENRY HAUBENs, citizens of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful 1mprovements in Flush Valves, of which the following is a specication.

This invention has for its object, broadly, to provide a flush valve consisting of few and simple parts so that it may be manuactured economically, may be conveniently assembled and will be durable. One of the specific objects is to provide means which may be readily adjusted for controlling the sliding movement of. the main valve to its seat and thereby regulate the flow of water used for flushing.' Another object is to provide a noiseless feature for the movement of the main valve, this being the provision of a constricted passageway between the flange of said valve and itsl seat operating to modify or retard its speed and preventingvibratlon. Another specific object is to provide a release valve within the main valve having resilient means tending to maintain it on its seat regardless of the degree of pressure and also preventing any deposit of silt or other obstructions on its seat. The invention also includes the use of a screen, tending to prevent the entrance of sand, gravel or other obstructions within the` chamber of the main valve.

The invention consists of the novel construction, combination and arrangement of parts as described herein and claimed, and as illustrated in the accompanying drawings, Wherein,- l

Fig. 1 is a sectional view of the main valve. Fig. 2 is a view of the device in longitudinal section. Fig. 3 shows a cap and parts mounted thereon, a' cylindrical screen being omitted, the view of the cap being in lon itudinal section and on an enlarged Sca e. Fig. 4 is a plan view of the main valve. Fig.

5 is a transverse section through the valve housing on line 5 5 of Fig. 8 to clearly show a plurality of lugs for guides. Fig. 6 is a partly broken, side view of the release valve showing v certain operating parts mounted on its. stem. Fig. 7 is a broken away, side view of a sleeve or springholder for the stem of the release valve, Fig. 8 is a sectional View showing position of parts when the main valve is removed from its seat.

Referrin ynow to the drawing for a more particular escription, numeral 9 indicates a valve housin having a compartment 10 through whic Water, under pressure, may pass from its intake ort 11 to its discharge port 12 by passmg the valve seat 1K3, subject to the control of a release valve 14 having a valve seat 15 in a hollow main valve 16, the latter having a cylindrical passageway 17 and adapted to be seated on the valve seat 13. Y

In order that the objects irst mentioned may be attained, we provide certain features to be fully described. Numeral 18 indicates a cap for the valve housing, said cap being provided centrally with a tubular stem`l9 which projects within the chamber a of the valve 16. At 20 is indicated a ilexible disc or stationary piston which is disposed within and engages the wall of the chamber a and is secured to the stem 19 by means of a screw 21 having a passageway b. Numeral 22 indicates a screw operating as an adjusting, needle valve, since, by rotating it, its tapered end c may enter the passageway b a desired distance to control a flow of'water to the chamber a from the compartment 10, the Water passing through a port-d of the stem 19, and tending, by Water pressure to normally maintain the valves 14 and 16 on their respective seats. In order that foreign substances may not enter the chamber a and therefore will not lodge between the valve 14 and its seat 15, a screen 23 is provided and is disposed to circumscribe the stem 19, this being a desired feature in operation since, such lodgement would permit a constant waste of water.

Numeral 24 indicates a screw-plug which is mounted in the top of the cap to prevent rotation, `accidental or otherwise, of i the needle-valve 22.

In order that the release-valve 14 may be normally pressed upon its seat, this pressure being additional to the pressure of water, and that it may be released readily and effectively, it is provided with a hollow stem 25 adapted to be disposed centrally of the cylindrical flange c of -the valve 16, said stem being provided with a horizontal flange 26 adapted to support the lower end of a spiral spring 27.

Numeral 28 indicates a sleeve ada ted to be inserted Within the cylindrical ange e through which water may pass to the discharge port 12 from the chamber a, after CTI passing the valve 14, said sleeve' being provided with an outwardly projecting flange f for engaging the lower end ot the flange e, and having an inwardly projecting flange g at its top for engaging thel upper end ot the spring 27'.l

It will be understood that when the valve 14 moves from its seat, water will move through the passageway 17 from the chamber a, the valve 16 thereupon moving upwardly from its seat 13, and resulting in the desired operation of flushing, the water continuing to flow freely from the intake port 11 to and through the discharge. port 12, the degree of resistance of the spring 27 being 4such that it will not prevent operation.

The removal o't the release valve from its seat is accomplished by use ot a handle 29 having a boss 30 mounted to permit limitedk swinging movements in the cap 31 which is provided for the tubular projection 32 of the valve housing. Numeral 33 indicates al plunger bar mounted to permit longitudinal movements in the projection 32 and having a headvL normally engaging the boss 30 of the handle by means of a spiral spring 34.

At 35 is indicated a stop-meinberhaving a head slidingly mounted in the hollow stem 25 of the valve 14, the head 7c being prevented from moving entirely out of the stem by means of the inwardly projecting flange which isprovided for the lower end of said stem, and in operation, a swinging movement of the handle 29, against the torce of the spring 34, will cause the bar 33 to move inwardly of the valve housing 9, into engagement with the stop-member 35, whereby, member 35, together with the stem 25 and valve 14 will be moved, the latter being moved from its seat sulliciently to release the water, or a part thereof, fromv the chamber a, and to permit a free movement of water from the pressure side to the discharge port 12, by passing the valve seat 13.

It will be understood that the valve 16, by action of gravity, will move to its seat 13 as soon as the chamber rz becomes lilled with water. Since water moves in the direction of least resistance it will pass the valve seat 13 and the discharge port 12 from the intake 11, the val-ve 14, by action ot the spring 27 remaining on its seat. As s'oon as that part of the chamber a, below the piston 20, becomes filled with water which passes through the port d and passageway 7), the valve 16 will engage its seat 1 3, which terminates the operation oi flushing.

When the valve 16 moves upwardly to its highest position, the stop-member 35 will be disposed in a plane somewhat above the plane of the plunger-bar 33. The head 7c of the stop-member is adapted to have a sliding movement within the hollow stem 25, the object in view for this construction being to cause operation of flushing to be certain, since,'in some instances, an operator, by use of the handle 29, may inadvertently maintain the plunger-bar in its innermost position. This however, will not prevent a downward movement of the valves and termination of the liow, since., on account of the construction, if the stop-member engages the upper side ot the bar 33 while the valve 16 is moving to its seat, the

construction as described, the downwardmovement of the valve 16 will be retarded as soon as the flange e is disposed in close proximity to the valve-seat 13 since the water will flow through the constricted passageway p until the valve 16 is seated. i

Numerals 36 indicate guides or ridges which are provided for the wall of the valve housing; they project inwardly ofthe compartment 10, and tend to maintain the valve 16 in a vertical position, and permit a movement of water to the port al.

Numerals 37 indica-te guides of ridges which are provided Jfor the hollow valve 16. They permit a limited rocking movement of the valve 14 when the llatter is moved from its seat, but prevent excessive rocking movements of said valve, and permit a suitable valve 16 through the passageway 17 when the relief valve is moved from its seat by operation of the handle 29, plunger-bar 33 and stop-member 35. v

While we have described construction in detaihcertain details may be changed, and changes in form, size and proportions may be made, said changes being within the scope ol the invention as claimed,

We claim as our invention,-

1 1n a flush valve, the combination with an upright valve housing having a valve seat and provided with a cap having a tubular stem projecting toward the valve seat, said stem being provided with an intake port, a valve rnormally disposed on the valve seat, said valve having an annular chamber opening on its top and provided with a valve seat, a lieXible disc in the chamber of the valve, a screw threaded in the stem of the cap in engagement with the disc and having a.. passageway communicating with said intake port, a needle valve in said tubular stem for controlling the passageway of the screw, a screen circumscrihing said stem in engagement withv said cap and said disc, and a release valve normally disposed on the valve seat of the vfirst named valve and adapt.-

llow of water from the chamber a of the ed tobe moved for causing a movement of having a passageway communicating with 'the Iirst named valve. said intake port, a needle, valve in the stem 2. In a flush valve, the combination with a of said cap, and a release valve normally disvalve housing having a valve seat and a cap Aposed on the valve seat of the first named 5 having a tubular stem provided with an in valve and arranged to be moved for causing l5 take port, a valve for said valve seat having a movement of the rst named valve. an annular chamber opening on its top and In testimony whereof, we have aixed our having a valve seat, adisc in the chamber signatures. A of the valve, a screw threaded in the stem LAMBERT H. HOLCOMB.

10 of the cap in engagement with the disc and I HAUBENS.

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