Improvements in and relating to Syphon Water Closets.
Year: 1899

page_text: Date of Application, 10th May, 1899-Accepted, 10th June, 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Syphon Water Closets.
I, RICHARD GEORGE HOWSON, of Ephraim Street, Hanley, in the County of
Stafford, Sanitary Earthenware Manufacturer. do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:-
This invention relates to syphon water closets, and has for its object to provide
a closet of simple design to perform the syphonage rapidly and effectively and
by the use of a minimum quantity of water.
The invention consists in the employment of a water jet pipe through which
the water passes to effect the syphonage of a closet the water jet pipe is fixed in
such a manner that it shall be supported more especially at its extremity by the
wall of the basin or trap so as thereby to ensure that the direction of the outlet
of this water jet pipe shall not be altered during manufacture or firing. The
invention further consists in providing the long leg of the syphon with two or
more contractions of substantially oval section which are transverse or angularly
disposed one to the other and do not necessarily diminish the cross sectional area
of the leg, such contractions serving the purpose of diverting the water and
sealing the syphon and thereby more rapidly effecting syphonage even while the
upper part of the bend is not filled with water, so that therefore a relatively small
quantity of water is necessary to perform the syphonage of the closet. The
invention also consists in means for preventing syphonage of the closet when slops
are poured into the basin, details of the construction and combination of which
are hereafter described.
The invention is illustrated in the accompanying drawings, in which,
Figure represents a longitudinal sectional elevation of a closet having the
invention applied in its construction.
Figure 2 is a longitudinal elevation corresponding thereto, and,
Figure 3 is a longitudinal elevation taken upon the opposite side to that of
Figure 2.
In carrying the invention into effect a basin A is provided of earthenware or
any other suitable material and preferably of such a shape that the water surface
shall have a relatively great area; and the basin A is provided with an integral
support A as also with a hollow box flushing rim A in which a series of holes a
are provided through which the water may issue therefrom in a downward
direction for the flushing of the sides of the basin. An open rim or any other flush-
ing rim may, however, be employed. This box rim A2 is in communication with
a chamber B into which issues the flush pipe C which conveys water from the
cistern or other source of supply. Upon one side of the basin at the rear and
preferably integral therewith a water jet pipe D is provided which preferably
tapers towards its lower extremity and passes down from the chamber B round
the lower part of the basin A and issues out into the basin at the short limb of
the syphon. By the arrangement of the water jet pipe in this fashion its extremity
is supported by the wall of the basin or short limb of the syphon and is therefore
not liable to be distorted or have its direction changed during manufacture or
firing as is usually the case in the manufacture of closets of this kind.

page_text: From the extremity D¹ of the water jet pipe an air pipe E issues out and
passes to the upper part of the bend of the syphon, so that, normally, the syphon
shall be open to air, but when the basin is being flushed water shall pass up the
air pipe and seal up its extremity E so as to cut off communication of the upper
part of the bend with the outer atmosphere and thereby permit of the syphonage
being effected.
The long limb F of the syphon is contracted at F and F so as to form the
pipe of oval sections the major axes in such oval contractions being transverse,
opposed or angularly disposed one to the other, so that immediately upon the
water passing up the short limb of the syphon it passes in small volume down the
long limb and by being diverted to the centre at such oval contractions readily
seals the syphon pipe and thereby rapidly induces the complete syphonage. The
contractions are arranged close to each other and are preferably in line with the
bottom of the basin.
It will be understood that in operation the water from the cistern passes down
the flush pipe C into the chamber B whence it passes partially through to the
rim A flushing the basin, and passing partially down through the water jet pipe D
issuing out upwardly in the short limb of the syphon, the water simultaneously,
but only in part, passing up the air pipe E closing the extremity E so that
syphonage may be effected. The upwardly issuing water from the water jet pipe
in the short limb of the syphon causes a volume of water to pass upwardly and
to descend into the long limb of the syphon, where, owing to the transverse or
opposing contractions, the syphonage is readily induced.
It will be understood that the flushing water passes through the chamber B
with its full force to the rim A2 and down the water jet pipe D. The air outlet E
from the upper part of the band of the syphon may be led away outside of the
room, and when not sealed up by water passing upwardly from the water jet
pipe it will be understood that the upper part of the bend of the syphon will be
in communication with the outer air through the pipe E so that thereby
syphonage cannot be effected when slops are poured into the basin.
The long arm F of the syphon is suitably connected to an outlet.
By the provision of a closet according to the invention a minimum amount of
water can be employed and the syphonage is effectively and quickly performed.
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 I
claim is:
1. In syphon water closets, means for inducing syphonage consisting of two or
more substantially oval contractions in the long limb of the syphon which are
angularly disposed and in proximity one to the other for the purpose and sub-
stantially as described.
2. In means for effecting syphonage in syphon water closets, a water jet pipe
connected with an air pipe emanating from the extremity of the water jet pipe
and issuing through to the upper part of the syphon for the purpose and sub-
stantially as hereinbefore described.
3. A syphon water closet substantially as herein before described and illus-
trated.
01 1
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham and
25, Cross Street, Manchester.
Agents.