US1730187A - Flushing apparatus for water-closets - Google Patents

Description

if@ 0 n@ j ww Oct. -1, 1929.

E. i H MW u vll g z 3, l!! IIIV! ,I HM JH d .:c M/0` 00rd LIIFM IAM H. 1,. 1I

2f/ Q \\9 n0 fr n@ Patented Oct. l, 1929 FLUSHNG- APPARATUS FOR Application filed `May 21,

My invention relates to water closet flushing apparatus of the gravity type, comprising a tank adapted to contain la body of water for flushing purposes which is supplied from a service pipe connected with the city water supply, or from yany other suitable source of supply of water Linder .pressure. Such tanks are equipped with a float controlled valve which is automatically e closed to shut off the admission of water to float valve which normally closes the discharge from the tank leading to 4the closet bowl, and by 4the lifting of which out of operative position the water in the tank is permitted to discharge .for iiushing purposes. When the tank empties to a certain point, this float yvalve drops to its seat and cuts o 'the discharge.' These gravity'operated flushing Vtanks are of either the high tank or the low-down tank types. The lhigh tank is usually placed seven feet above the ioor, and the low-'down tank is placed two feet above the floor, or just above the closet bowl. Obviously the :head of water available for flushing purposes as supplied from the high tank is considerably greater than that-from the low tank, but high tanks are regarded as unsightly, and, moreover, they cannot be used succes'si''ully in connection with a water closet vbowl ofv the blow-out vtype which requires a pressure .of at least ten pounds to operate it. The low tank apparatus is objectionable because of the low pressure or lack of water head. On this account the bowls used in connection with the low tanks" must have a reduced discharge passage to permit a solid body of water to form or build up, which is necessary to create siphonic action, and low-down tanks cannot 'be used where specification call for closet bowls with full size discharge outlets. As restriction is necessary in connection with such low tanks to create siphonic action, the area of the outlet is constricted and consequently solid matter does not discharge freely, and the flushing opera'- 1e25. seriai No. 31,843.

tion is not as efficient as in other types of closets in which` greater pressure is available. Y

The object of my invention is to provide an improved flushing apparatus which inay 'l be'employed either in connection with high or low tanks, by which the velocity"'and volume of water discharged in-a specified time from the tankwill be greatly increased, so that the apparatus will operate efficiently and without danger of getting out of order by clogging or otherwise, as is apt to be the case with water closet'lflushing apparatus of this type as at present constructed. vThis object l accomplish as illustrated Vn` the drawings and as lhereinafter described'. l/Vhat I regard as newv is set forth in the claims.

In .the` accompanying drawings,-

Fig l is a sectional view cfa flushing tank equipped with my improved apparatus, some parts beingin elevation and some linsec't'ion;

Fig. 2 is an enlarged verticalcross-section on Yline 2 2 of Fig: l; and i Fig. .3 is Van enlarged vertical lcross-section on line 3-3 of Fig. l.

Referring to the drawingsffd indicates a tank, which may be of anysuitable' construction adapted` to hold water. `Fitted in the bottom of the tank is a discharge fitting 5 in the form of a pipey externally screwvthreaded to receive a coupling nut Gby which it is secured in place, such screw threads providing means .for attaching the fitting to `a discharge pipe .leading to the `bowl' lin the The stem 9 extends l:through an` opening 13 in the upper end off the housing il, as clearly shown -in Fig. l. e At one side of the lowerzportion ofthe housing l1 is a laterally extending-intake 'pipe or nozzle 14,

while its inner end opens into the chamber the outer end of which opens intothe tank 4, y 100' 12 adjacent to the valve seat 7 and somewhat above it. This intake is shaped to provide a water passage 15 that is curved downward at its inner end, so that water flowing through it into the housing 11 will be directed downwardly into the upper end of the fitting 5. rlheintake is also provided with a curved channel 16 at its upper side near its inner end, the purpose of which will be hereinafter set forth. f

Water is supplied to the tank 4 through a pipe 17, the lower end of which projects through the bottom of the tank and is externally screw-threaded, as shown at 18, so that it may be conveniently coupled to an outside service pipe connected with the mains, as usual.- Obviously the pipe 17 constitutes a continuation of such service pipe as it carries water under service pressure. At its upper end the service pipe 17 is provided with the usual valve 19, by the operation of which the admission of water to the tank is controlled. Said valve comprises an upwardly projecting valve stem 2O having a collar 21 through which extends a float lever or rod 22 fulcrumed at 23 on a bracket 24 in the usual way, so that by moving the float lever 22 vertically the valve stem 20 may be reciprocated to open or close the valve 19. The outer end of the float lever 22 carries theusual float ball 25 which floats on the water in the tank and actuates the lever 22 in the usual way to open or close the valve 19.

An inlet tube 26 is connected at its upper end with the valve 19 by means of an elbow 27, and is arranged to receive water from the pipe 17 when the valve is open and to be cut olf from said pipe by the closure of said valve. The lower end of the tube 26 extends down to a point opposite the open end of the intake 15, where it is provided with a nozzle or jet 28 which extends a shorty distance into the open end of the intake so that water discharged through the tube- 26 is directed into said intake. As shown in Fig. 1, the nozzle 28 is substantially in line with the curved channel 16 of saidA intake, so that the jet discharge from said nozzle is direct-ed downwardly into the upper end of the fitting 5,

rovided of course the float valve 8 is not seated. l/Vhen said valve is on its seat, so that the upper end of the iitting 5 is closed, the water discharged from the tube 26 is retained in the tank, and in that way the tank is filled.

lVhen the water in the tank is to be discharged for flushing purposes, the valve 8 is lifted off of its seat by means of an arm 29 pivoted at 29a and arranged to be lifted by therocking of a cross-head 36 provided with a hand lever V31 located outside the tank. Said lever and cross-head are pivoted at 32, as shown inFig. 1.y The arm 29 isaconnected with the stein 9 by a link 33l having at its lower end an eye 34 through which the stem. 9 is threaded, so that said stem may move vertically independently of the link 33 in the usual way.

At one side of the housing 11 is a vertically disposed tube 35, the lower end of which is connected with the fitting 5 below the seat 7 by a passage 36 in a boss 37 formed at one side of the upper portion of the fitting. The tube 35 extends up above the normal level of the water in the tank 4, and is connected with the elbow 27 by a pipe 38, so that when the valve 19 is open water may flow into the tube 35 and pass through passage 36 to the fitting 5. This water is used for refilling purposes, as will be hereinafter explained. At its-upper end the tube 35 is provided with a cap in the form of a float cup 39 which is seated in the upper end of said tube. Said cup is open at the top, and at the bottom is provided with a short tube 40 that extends down into the upper end of the tube 35. Preferably the upper end of the housing 11 is connected with the tube 35 by a split collar fastener 41 which holds the housing in place.

The operation of the apparatus is as followsLWhen the parts are in the position shown in Fig. 1, at which time the tank 4 is filled with water up to the normal level, the float 25 is held up, thereby holding the valve 19 closed so that the supply of water to the tank is cut off, and the water in the tank is prevented from passing out through the fitting 5 by means of the float valve 8 which is then on its seat 7. When the closet bowl is to be flushed, the lever 31 is operated to rock the cross-head 30, thereby lifting the arm 29, which liftsthe float valve 8 off of its seat and permits the waterin the tank to pass into the fitting 5 through the intake 14. The level of the water in. the tank thereupon drops, lowering the `float 25, which opens the valve 19 and admits water to t-he jet tube 26 under service pressure. At the same time water is admitted through tube 38 to tube 35. rlhe discharge of water from the nozzle 28 into the intake 14 operates as an injector to increase the velocity and volume of water that is delivered to the closet bowl, since the full force of the service pressure is applied to the ordinary gravity discharge from the tank, so that maximum flushing efficiency is obtained. This will be better appreciated when it is considered that with the low-down tank as at present constructed the head of water is two feet, equivalent to a pressure one pound whereas, with my improved jet discharge, with a service pipe delivering water under pressure of ten pounds, which is considered low, the effect of a twenty foot head of water would be obtained as against the two' foot head with the old low-down tank, and a seven foot head with the old high tank. With my improvement, therefore, a much better flush ing may be obtained with a low tank than can at present be obtained with a high tank.

l/Vhen the tank 4 has been substantially emptied, the float valve 8 drops to its seat, cutting olf further discharge vthrough .the in.- take 14, but as vthe passage 736 leading vfrom tube :35 is below said seat, the discharge of refill 'water through said passage is not stopped, and consequently such water passes downto the bowl for refilling purposes. Aft.- er the seating of the valve 8, 4the water dis.- charged through nozzle 28 remains in the tank 4, and said tank is gradually refilled until the float 25 is lifted and closes the valve 19. This shuts the water off from tube 26 and also from tube 38. Should the water in the tank rise above the upper end of the over llow tube A; 35, the cap 39 will be lifted by flotation, permitting the water to overflow into saidtube and preventing it from rising any higher in the tank. The operation of the cap 39 being controlled simply by gravity, it cannot get .out of order, and therefore it may be relied on to operate efficiently. The tube 40 connected with the bottom of said cap prevents its displacement, and also permits any water entering the cap to pass down into the tube 35 so that the cap will always retain its buoyancy. Durino' the flushing operation the cap 39 prevents any large volume of air from. entering the tube 35 and being carried down with the flushing water, which would have the effect of reducing the volume of the flushing water and would therefore interfere with the proper operation of the apparatus. The curved channel 16 in the upper part of the intake 15 acts as an auxiliary t0 the pressure Jet 28, and is arranged to direct the powerful jet of water discharged therefrom into the center of the outlet 5 below the point at which the passage 36 opens thereinto. By this means of concentrating-energy maximum efficiency is obtained.

My invention includes not only the specific means shown and described by which the object of the invention is accomplished` but also such variations or modifications thereof as would occur to those skilled in the art.

lVhat I claim as my invention and desire to secure by Letters Patent, is-

1. A flushing apparatus for water closets comprising a tank having a float valve con- 4trolled outlet, a service pressure operated injector arranged to deliver water under pressure to said outlet, and a float actuated valve for controlling the operation of said injector.

2. A flushing apparatus for water closets ,comprising a tank having an outlet, a service pressure operated injector arranged to deliver water under pressure to said outlet, a float valve for controlling the discharge of water from said tank through said outlet, 4fand a float actuated valve for controlling the operation of said injector.

3. A flushing apparatus for water closets comprising a tank, a service pipe for supplying water under pressure, a float valve con- .'trolled outlet from said tank, a tube for delivcomprising a tank, a housing therein forming a float valve chamber, an outlet ,communicating with the bottom of said .chamber and vhav.- ing a valve seat at itsiupper end, a float valve in said chamber adapted normally to close said outlet, an intake opening laterally in to said chamber, a service pipe for supplying water under pressure, a tube arranged to re ceive w-ater under pressure from said serv` ice pipe and to inject the same through said intake into said outlet, and a float actuated valve for ycontrolling the admission of water to said tube.

5. A flushing apparatus for water closets comprising a tank, a housing therein forming a-,ioat valve chamber, an outlet communicating with the bottom of saidchamber and having a valve seat at its upper end, a float valve in said chamber adapted normally to ,close said outlet, an intake opening laterally into said chamber and arranged to discharge water `downwardly into said outlet,a service pipe for supplying water under pressure, a tube arranged to receive water under pressure from said service pipe and to inject the same into said intake, and a float actuated valve for controlling the admission of water to said tube.

6. A yflushing apparatus for water closets comprising a tank, a housing therein forming a float valve chamber, an outlet communicatingwith the bottom of said chamber and havinga valve seat at its upper end, a float valve in rsaid chamber adapted normally `to close said outlet, an intake opening laterally -into said chamber, a service pipe for supplying water under pressure, a tube arranged to receive water under pressure from said service pipe and having a nozzle for directing water therefrom into and through said intake, and a float actuated valve for controlling the admissionof water to said tube.

47. A flushing apparatus for water closets comprising a tank, a housing therein forming a float valve chamber, an outlet communicat ing with the bottom of said chamber and having a valve seat at its upper end, a float valve in said chamber adapted normally to close said outlet, an intake opening laterally into said chamber, a service pipe for supplying water `under pressure, a tube arranged to receive water under pressure from said service pipe and 'having a nozzle for directing water therefrom into and through said intake, said intake being arranged -to direct'the water from said nozzle downwardly intosaid outlet, and a float actuated valve for -controlling the admission of water to said tube.

8. A flushing apparatus for water closets comprising aftank,a housing therei-n forming a float valve chamber, an outlet communicating with the bottom of said chamber and having a valve seat at its upper end, a float valve in said chamber adapted normally to close said outlet, an intake opening laterally into said chamber, a service pipe for supplying water under pressure, a tube arranged to receive water under pressure from said service pipe and having a nozzle for directing water therefrom into and through said intake, and a lloat actuated valve for controlling the admission of water to said tube, said intake having a downwardly curved channel arranged to direct the water from said noz- Zle downwardly into said outlet.

9. A flushing apparatus for water closets comprising atank, a housing therein forming a float valve chamber, an outlet communicating with the bottom of said chamber and having a valve seat at its upper end, a float valve in said chamber adapted normally to close said outlet, an intake opening laterally into said chamber, a service pipe for supplying water under pressure, a tube arranged to receive water under pressure from said service pipe and having a nozzle for directing water therefrom into and through said intake, a float actuated valve for controlling the admission of water to said tube, and an overflow pipe in said tank opening into said outlet, said intake being arranged to direct the water from said nozzle downwardly into said outlet below said opening.

l0. A flushing apparatus for water closets comprising a tank, a housing therein forming a float valve chamber, an outlet communieating with the bottom of said chamber and having a valve seat at its upper end, a ioat valve in said chamber adapted normally to close said outlet, an intake opening laterally into said'chamber, a service pipe for supplying water under pressure, a tube arranged to receive water under pressure from said service pipe and having a nozzle for directing water therefrom into and through said intake, a float actuated valve for controlling` the admission of water to said tube, an overflow pipe discharging into said outlet, and a cup valve normally closing the upper end of said overflow pipe.

l1. A flushing apparatus for water closets comprising a tank, an outlet at the bottom thereof, a float valve controlling said outlet, a service pipe for supplying water to said tank, a iioat actuated valve for controlling the water supply, an overflow pipe in said tank and communicating with said outlet, and a cup valve normally closing the upper end of said overflow pipe, said cup valve having means for preventing the accumulation of water therein.

412. A flushing apparatus for water closets comprising a tank, an outlet at the bottom thereof, a float valve controlling said outlet, a service pipe forsupplying water to said ROBERT A. eBooks.

Images