US1142118A - Flushing-cistern. - Google Patents

Description

R. H. PAUS.

FLUSHING CISTERN.

APPLICATION FILED DEC- I. 1913.

Patented June 8, 1915.

20mm 6 G m; 4% p m.

UNITED STATES PATENT OFFICE.

RUDOLPH HENRIK PA'US, OF SHIPLEY, ENGLAND.

FLUSHING-CISTERN.

Application filed December 1, 1913.

To all whom it may concern Be it known that I, RUDOLPH HENRIK Pans, a subject of the King of Great Britain, residing at 7 Victoria Park, Shipley, in the county of York, England, have invented certain new and useful Iinprovements in Flushing-cisterns; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to flushing cisterns of the siphon type for water closets, urinals, and other appliances and has for its chief object to produce a silent cistern and to eliminate the objectionable noise that is caused by the inrush of air and water into the siphon when the water in the cistern arrives at the level of the siphon inlet aperture. In order to obviate this objection it has been proposed to provide the siphon with one or more pipes or passages of small bore which enter the siphon at or about its highest level and extend to within a short distance above the level of the siphon inlet aperture. According to this invention a small hole is formed in each such pipe above the highest water level in the cistern, the arrangement being such that when the water is discharged from the cistern, air enters the small holes in the pipes of small bore and prevents any siphoning action therein, and as soon as the water level uncovers the end or ends of the small pipe or pipes, the air entering the same stops the siphoning action in the siphon before the water reaches the level. of the siphon inlet aperture. The latter is consequently never uncovered and no gurgling noise caused by the sudden inrush of air and water to the siphon inlet aperture can take place. Inrush of air and water to the pipes of small bore is prevented by the air entering the same through the small holes which are not large enough to detrimentally affect the siphoning action of the siphon. In order that the said invention may be clearly understood and readily carried into effect the same is described with reference to the accompanying diagram matic drawings which illustrate by way of example one embodiment of the invention.

Figures 1 and 2 are transverse and longi- Speeification of Letters Patent.

Patented June 8, 1915.

Serial No. 804,039.

,tudinal sections respectively of a flushing cistern provided with flushing apparatus in accordance with this invention. Fig. 3, is an inverted section taken on line 3 of Fig. 1 of the siphon and silencing pipes drawn to a lar 'er scale, and Fig. 4 is a plan of one of the silencing pipes.

A indicates the siphon.

B B B indicate three silencing pipes and C indicates the supply pipe. The pipe B advantageously enters the siphon at its highest or central point, and the other two pipes B B enter the siphon directly over the respective legs thereof, the lower end of each pipe terminating slightly above the level of the siphon inlet aperture a. Each pipe is formed with a small hole 6 already mentioned and in practice such hole is merely a pin hole.

To silence the noise produced by the delivery of the water to the cistern after a flush has taken place the end of the supply pipe C or cock is advantageously connected with an inclined or curved pipe 0 which passes to the cistern below the lowest water lever therein, and may be formed with a small air hole 0 The invention hereinbefore described can be applied to any existing siphon cistern whether employed in conjunction with urinals, water closets, or other appliances that require flushing and whether the flushing apparatus is operated automatically or by hand.

I claim:

1. In a flushing-cistern, a siphon, a pipe connected thereto, said pipe having an everopen air-inlet aperture above the normal water-level, and its open lower end above the level of the influx of the siphon.

2. In a flushing-cistern, a siphon, a pipe connected at its upper end to said siphon and having its lower end slightly above the level of the influx end of the siphon, said pipe having a bore of relatively small diameter and having an ever-open air-inlet aperture above the normal water-level.

3. In a flushing-cistern, a siphon, a plurality of pipes connected at their upper ends to said siphon and having their lower ends slightly above the level of the influx end of said siphon, each of said pipes having a bore of relatively small diameter and having an ever-open air-inlet above the normal waterlevel.

4:. In a fiushing-cistern, a siphon, three pipes having bores of relatively small diamas my invention, I have signed my name eter, one o1 SZLlCl pipes beingconneeted to the in presence of tWo subscribing Witnesses.

siphon at its bend, and one of the other pipes being connected to each leg of said siphon, RUDOLPH HENRIK PAUS' 5 said pipes having ever-open air-inlet aper- Witnesses:

tLHQS above the normal Water-level. WILFRID DUNN,

In testimony that I claim the foregoing FRED HAMMOND.

Copies of this patent may be obtained for five cents each, by adrlressing the Commissioner of Patents, Washington, D. G.

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