Improvements in water Closets.
Year: 1893

page_text: Date of Application, 5th Dec., 1893
Complete Specification Left, 10th May, 1894-Accepted, 14th July, 1894
Improvements in water Closets.
I, WILLIAM BARTHOLOMEW of the Firm of B. Finch & Co. of S2 Belvedere
Road Lambeth in the County of London, Sanitary Engineer, do hereby declare
the nature of this invention to be as follows:-
My invention relates to Improvements in Water Closets whereby I am enabled
to obtain a much greater depth of water in the pan, and to ensure a more effectual
discharge of its contents than is possible with closets of the ordinary type of
construction.
In applying my invention to a wash down type of closet I extend the upper lip
of the trap to a much greater height than is usual and thus ensure a corresponding
increase in depth of the water in the basin. To the outlet of the basin I connect
a trap of ordinary construction and from the crown of this trap I provide an air
pipe, which extends in an upward direction to or near the underside of the supply
tank where it is connected to and terminates within an enlarged chamber formed or
attached to the water supply pipe; the end of this air pipe being bent or curved
in a downward direction.
In operation the action is as follows:-Upon the handle or pull being pulled for
the purpose of flushing the pan, the flow of water in descending the supply pipe
induces an upward draught in the air pipe thereby exhausting or attenuating
the pressure of air within the crown or upper portion of the trap attached to the
outlet of the pan, to such an extent as to permit of its being thoroughly flushed out
by the incoming stream of water.
By the use of my improved closet the danger of syphoning by the sudden flush
of water from a bucket is entirely obviated.
My improved closet may be used in combination with any suitable fill up or
afterflow device and may be made of cast-iron, pottery, or other suitable material.
Dated this Fifth day of December.
COMPLETE SPECIFICATION.
Improvements in Water Closets.
i, WILLIAM BARTHOLOMEW, of the Firm of B. Finch & Co. of No. 82 Belve-
dere Road, Lambeth in the County of London, Sanitary Engineer, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to Improvements in Water Closets whereby I am enabled
to obtain a much greater depth of water in the pan, and to ensure a more effectual
discharge of its contents than is possible with closets of the ordinary type of
construction.
In applying my invention to a washdown type of closet as, illustrated in Figure 1
upon the accompanying sheet of drawings, it will be seen that I extend the upper
lip A of the trap B to a much greater height than is usual, and thus ensure a
corresponding increase in depth of the water in the basin C. To the outlet of the
Pin 077

page_text: basin I connect a second trap D of ordinary construction, and from the crown d of
this trap provide an air-pipe E which extends in an upward direction to or near
'the underside of the supply tank F, where it is connected to and terminates within
an enlarged chamber G, formed on or attached to the water supply pipe H; the
end e of this air-pipe E being bent or curved in a downward direction so as to form
a- tuyere or nozzle as shewn on Figure 2.
In applying my invention to an ordinary syphon action supply tank, I arrange
for this curved or bent end e of the air-pipe E to extend down and into the upper
part of the cone through the dome as shewn in Figure 3.
In operation the action is as follows:-Upon the handle or pull 1 being pulled
for the purpose of flushing the pan C, the supply of water from the tank above
rushes down and around the ejector or nozzle through the annular opening formed
between the nozzle e and the inner surface of the supply pipe in the form of a
hollow cylinder having at its centre the mouth or opening of the nozzle. This
hollow cylindrical stream of water after passing down below the level of the
nozzle is caused to unite in a solid stream by the contraction formed in the pipe.
In this way the rush of water down the pipe H and around the nozzle e induces
an upward draught in the air-pipe E thereby exhausting or attenuating the pressure
of air within the crown or upper portion d of the trap D attached to the outlet of
the pan C to such an extent as to permit of its being thoroughly flushed out by the
incoming stream of water.
I may form the nozzle or tuyere e and enlarged chamber G as shewn and
described or I may arrange for the nozzle to be made conical or tapered and the
chamber G of any suitable section.
By the use of my improved closet the danger of syphoning by the sudden flush
of water from a bucket is entirely obviated, as the crown or upper portion of the
trap B is in direct communication with the outer air when the apparatus is not
in use.
My improved closet may be used in combination with any suitable fill-up or
after-flow device, and may be made of cast-iron, pottery or other suitable material.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
1 claim is
1. A water-supply-pipe H for closets having an air nozzle or ejector e fitted
within a chamber or enlargement G, formed upon or connected to the water supply
pipe H, for the purposes and as described and shewn upon the accompanying
drawings.
2. In water closets a supply-pipe in which the flow of water is at some point
confined to an annular passage interposed between full-bore or flush flow above and
below such point for the purposes and substantially as described.
Dated the Tenth day of May 1894.