US514188A

US514188A - Flushing-tank for water-closets

Info

Publication number: US514188A
Authority: US
Publication date: 1894-02-06
Anticipated expiration: 1911-02-06

Description

(No M6661.) P. HARVEY;

I'LUSHING TANK FOR WATER GLOSETS.

No. 514,188. I Patented Feb. 6, 1894.

1520672 for.

gw w

ms mmomu. u'mcampume COMPANY.

WASHINGTON, o. e.

UNITED ST T S PATENT OFFICE.

PATRICK HARVEY, OF CHICAGO, ILLINOIS.

FLUSHlNG-TANK FOR WATER-CLOSETS.

SPECIFICATION forming part of Letters Patent No. 514,188, dated February 6, 1894.

- Application filed February 20, 1893- Serial No. 463,018. (No model.

To all whom it may concern.-

Be it known that I, PATRICK HARVEY, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Flushing-Tanks for Water-Closets, which are fully set forth in the following specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to siphonic devices for affording and controlling a fiushingsupply from a tank to a water-closet.

It consists generically of the combination with a tank of a siphon whose discharge limb constitutes the discharge passage from the tank, and whose intake limb consists of a hood or cup inverted over the discharge limb, and at its lower margin fitting the latter closely, and provided with a device of the nature of a check valve to seat against outflow, and adapted to be lifted to pour its contents over into the discharge limb to prime the siphon.

Specifically, it consists of the combination of such a siphon with a secondary siphon which is formed virtually within the wall of the pipe which constitutes the discharge limb, so that the priming of the main siphon by the lifting of the hood primes also the secondary siphon'within it,the intake of the two siphons being at different levels, so that one breaks before the other as the tank empties.

Still more specifically, the invention consists in the details by which the construction of the compound or double siphon is rendered simple and easy.

In the drawings,Figure 1 is avertical sec-- tion through the tank and the flushing device therein, showing the ordinary ball-cock supply-valve or float-operated valve for controlling the supply. Fig. 2 is a section at the line 22 on Fig. 1. Fig. 3 is a diagram or conventional representation of the nature of a vertical. section of a device analagous to that shown in Fig. 1, of a simple form of single siphon which would embody the generic principle of my invention. Fig. 4 is a detail section of a modified form at the plane of the line 2'2 on Fig. 1.

A is the tank; B, the supply valve; 0, the discharge pipe, and D is a tube which may be considered a continuationwithin the tank of the discharge pipe, being without communication with the tank except at the upper end, which is open. E F is an inverted annular cup; that is to say, it comprises two concentric cylinders E and F, the annular space between which is closed at the upper end. Either or both,- but if only one, preferably the outer of these cylinders, E,is connected at its lower end to the flange C of the supply pipe, which also affords the means of connecting the tube D. But the lower end of both the cylinders E and F is cut away to form ports e and f, making the cylinders virtually, and exceptas to the legs which extend down between the ports for connection with the flange, end at the upper margin of the ports, which upper margin, in the case of the outer cylinder E is higher than in the case of the inner cylinder F. This inverted annular cup is located as shown in the drawings,the inner cylinder inside of, and the outer cylinder outside of, the tube D, the upper end of which stops short of the top of the inverted cup, leaving a clear passage over its upper margin within the cup.

It will be seen that when the parts are in the position described and shown in the draw- -ings, there is formed an annular siphon, of

which the intake or shortened limb is the space between the outer cylinder E and the tube D, and the discharge or longer limb is the space between the tube .D and the inner cylinder F.

G is an inverted cup or hood having at its niouthor lower end the marginal inwardly projecting and annular flange G, whose aperture is equal to the outer diameter of the outer cylinder E, so that the hood may be passed down about the siphon just described, making an easy fit, not loose enough to permit much leakage, andnot tight enough to prevent the easy movement up and down. The flange G is perforated with a large number of apertures g; and within the hood, and adapted to rest upon the upper surface of the flange G, is an annulus H, adapted to cover all the apertures g, and centered in the annular space between the cylinder E and the hood Gr, by projections from both edges to the said cylindrical walls respectively. This annulus operates as a check valve to close the apertures g against the downward passage of the water, but opens freely to admit the water upward through said apertures.

J 1s a lever fulcrumed on the edge of the tank and connected to the top of the hood G at the center adapted to lift it.

K K are projections extending up from the s phon E F to afford stops for the hood to limit its descent and preserve always a proper space between the top of the siphon and the top of the hood.

The operation of this device is as follows The tank being full to the level of the top of the siphon, which becomes the overflow point when it is desired to flush the closet, the hood G being lifted by means of the lever J, at the first upward movement becomes closed at the bottom by the seating of the annular check valve H, and in its farther upward movement, it carries upward its entire contents contained in the annular space around the siphon E F,-the slight leakage which may occur at the inner margin of the flange G being disregarded, and these contents, to the extent of the up-lift of the hood, are poured over through the center of the annular siphon,that is, down through the tube F. This tube F is preferably a little larger than the discharge pipe 0, and the quantity of water thus poured over into it from the annular space in the hood G about the siphon,

-being sufficient to fill it, fills also the discharge pipe 0, and institutes at once siphonic action in the familiar manner through the annular siphon ic passage e f. This siphonic action will continue while the hood is dropped again to normal position, and there will thereupon continue siphonic action through the annular space 9 within the hood G and outside of the siphon E F, this annular space constituting'the shorter limb of a siphon, of which the longer limb is the central space 9 within the inner cylinder F. There is thus created a double siphonic action,-that is, an action through two siphons discharging water into the flushing pipe and drawing it through the tank. The larger siphon comprising the annular passage '9 and the central passage 9, will break when the water reaches the level X--X, at the lower mouth of the hood, G and thereafter only the lesser siphon D E F will be operative. The larger quantity delivered through both siphons while both are operating constitutes the flushing supply, and the lesser quantity delivered through the smaller siphon after the first ceases to operate, constitutes the after-wash. When the water level has fallen to Y-Y,being the intake mouth of the lesser siphon,-that also will break and the outflow from the tank will entirely cease and the tank Will be filled by the operation of the supply Valve in the ordinary manner.

It will be observed that this construction dispenses entirely with any valve and with the necessity of any packing or other close fitting of any of the parts, and affords all the usual facilities afforded by this class of siphonic devices in respect to overflow, and entirely avoids narrow passages which might become clogged.

I have termed the several walls of the siphonic passages cylinders, but it will be understood that circular shape is not essential, but I prefer to make the inner member F of the siphon D E F noncircular,as, for example, polygonal or eorrugated,-these forms being shown in Figs. 2 and 4, respectively. Either of these non-circular forms adapts the member F to hold the entire siphon in fixed relation to the tube D without requiring fastening thereto or to the flange F, the angles of the polygon or the outer points of the corrugations affording bearing against the inner surface of the tube D, as seen in the crosssections. When this construction is adopted, if the entire annular cup E F is heavy enough so that there is no danger of being floated upward, or of being lifted upward by the slight friction of the inner edge of the annular flange G of the hood Gagainst the outer surface of the outer member E of the cup, all fastening of the latter at the bottom may be dispensed with.

Analysis of the structure shown in Figs. 1 and 2 will make it apparent that the entire siphon D E F, which may be considered the secondary siphon, constitutes a partition between the two limbs of the primary siphon, and that the operation of the primary siphon would be precisely the same if there were no spaces in this partition wall to afford a secondary siphon. Fig. 3, therefore maybe taken as a generic representation of the construction involved in Fig. 1, as respects the operation of the primary siphon and means of priming it. It will be apparent, also, that having such a construction as is represented conventionally in Fig. 3, a secondary siphon might be formed in any manner in the wall between the two limbs of the primary siphon,-as, for example, by means of a ductindicated in dotted line in said Fig. 3. In said Fig. 3, therefore, I have denoted the entire partition wall by the letter F, which, in Fig. 1, denotes the discharge limb of the primary siphon, and the passage within it by the letter g, which denotes the corresponding passage in Fig. 1; and the duct shown in dotted line I have denoted by the letters e f, which denote respect ively the two annular passages of the secondary siphon in Fig. 1.

I claim- 1. In combination with the tank, a siphon whose discharge limb constitutes the discharge passage from the tank, and whose receiving limb consists of a cup or hood inverted over the discharge limb and embracing the latter closely, and which is provided with a check-valve-device to close the intake mouth against outflow, the said discharge limb having within its wall a siphonic passage Whose intake mouth opens at the outer side of said wall below the intake of the hood and whose discharge mouth opens at the inner side in the discharge passage: substantially as set forth.

2. In combination with the tank, the siphon whose discharge limb constitutes the discharge passage from the tank and whose receiving limb consists of a cup or hood in-.

verted over the discharge limb and at its lower margin embracing the latter closely and provided with a check-valve device to close the intake mouth against outflow; the discharge limb having within its wall a siphonic passage each limb of which is annular, the discharge limb being within the intake limb and opening into the central limb of the main siphon, the receiving limb opening into the tank below the intake of the outer hood: substantially as set forth.

3. In combination with the tank and the discharge pipe leading therefrom, an upwardly open pipein the tank having watertight connection at the bottom thereof, and

communicating with and inclosing the mouth of the discharge pipe, an annular cup inserted over such upstanding pipe, having the lower margin of its outer wall at a higherlevel than thelower-margin of its inner wall, and the hood G having the marginal fiangeG' adapted to fit about the annular cup, said flange being apertured and provided with the annular check valve H; and suitable means for lifting the hood: substantially as set forth.

4. In combination with a tank, the annular siphon D E F, the discharge pipe leading from the center of said siphon, the hood encircling the siphon having intake at the bottom and provided with a check valve adapted to be seated by outflow from the hood at such intake, said intake being higher than the in take of the annular siphon: substantially as set forth.

In testimony whereof I have hereunto set my hand, at Chicago, Illinois, this 14th day of February, 1893.

PATRICK HARVEY.

- Witnesses:

CHAS. S. BURTON, JEAN ELLIOTT.