Improved Ventilation and Flushing of all Descriptions and Kinds of Water Closets.
Year: 1886

page_text: Date of Application, 28th Dec., 1886
Complete Left, 27th Sept., 1887
Complete Accepted, 4th Nov., 1887
PROVISIONAL SPECIFICATION.
Improved Ventilation and Flushing of all Descriptions and Kinds
of Water Closets.
I WILLIAM JOHN STEVENS of Calne in the County of Wilts Plumber do hereby
declare the nature of my invention for IMPROVED VENTILATION AND FLUSHING FOR ALL
DESCRIPTIONS AND KINDS OF WATER CLOSETS to be as follows:-
A top rim curving inwards and downwards running round the whole of the basin
and terminating at back of basin in an up current Ventilating Shaft communicating
with the outside air-such rim being marked A A on annexed drawing.
A flushing rim immediately beneath the above mentioned rim also curving inwards
and downwards the exterior of the basin at the point B projecting inwards to a point
within one eighth of an inch or thereabouts of the inside curve of the flushing rim,
causing the water to drive with great force against the inside face of the pan.
A flushing arrangement at back of pan giving a small aperture as shown at
point "C" causing water to flush out pan with great force.
A small cut to form an escape of water at point "D" from a chamber formed by
a partition as shown at point "F" keeping such chamber full of water till after the
flushing apparatus has discharged itself when the water from such chamber will flow
through point "D" filling the container marked "G.”
A rim at front of basin curving inwards and downwards above outlet as shown at
point "E" preventing water after flushing from re-entering basin.
The ventilating rim marked "A" forms a protection against all over flows
frequently caused when the water closet is used as a slop sink.
Dated this 27th day of December 1886.

page_text: I, WILLIAM JOHN STEVENS, of Calne in the County of Wilts, Plumber, 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 :-
This Invention relates to improvements in the pans of water closets for the purpose
of affording increased ventilation and more perfect flushing.
The Invention will be more readily understood by reference to the accompanying
sheet of drawings which represents a section of a closet pan with my improvements
applied thereto which consist
pan
Firstly-In forming a rim A around the top of the pan, such rim curving.inwards
and downwards and thus forming a channel A around the top of the pan which being
open at the underside affords a passage for the foul air arising from the which
can be conveyed away through an outlet A² to a ventilator shaft A³. The arrows in
the pan shew the direction of the currents, those entering the pan from the top
indicating pure air. This ventilating rim forms a protection against overflow or
splashing which frequently occurs when slops are emptied into the pan.
Secondly Beneath the rim A is a second rim B similarly disposed and communi-
cating with the water supply pipe B1, thus forming a channel all round the pan for
the flow of the water. The edge of the rim is turned inwards towards the side of
the pan so as to deflect the water against the sides of the pan. At the back of the
pan is a partition C forming a chamber which communicates with the interior of .the
pan by means of a hole at flushing it out with great force.
U
When the flushing apparatus has discharged itself, the water from the chamber
formed by the partition will flow through at point D and will fill the bottom of the
pan as indicated by the dotted lines G.
Thirdly The invention consists in forming, a rim or downwardly projecting ledge E
around the inner front of the pan to prevent the return of water which has once
passed out of the pan during the process of Hushing which it is liable to do 'under.
the influence of a strong flushing current. The dotted lines H indicate the water
forming the stench trap and the outlet J in the soil pipe. J' leads to the ventilator
shaft. It must be understood however that my improvements are not confined to the
particular form of pan herein shewn as they are equally applicable to any kind.
Having thus 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. A closet pan constructed with a ventilating rim such as A substantially as
berein described.

page_text: 2. A closet pan constructed with a flushing rim such as B substantially as herein
described.
3. A closet pan constructed with a flushing rim such as B in combination with a
chamber formed by a partition such as C, substantially as described.
4. A closet pan formed with a downwardly projecting ledge or rim such as E
substantially as and for the purpose described.
5. The complete closet pan substantially as described and illustrated in the
accompanying sheet of drawings.
Dated this 27th day of September 1887
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W.C.,
Agents for the Applicant.