IMPROVEMENTS IN AND RELATING TO WASH-OUT VALVELESS WATERCLOSETS, AND TO STENCH TRAPS TO BE USED THEREWITH, WHICH STENCH TRAPS ARE APPLICABLE TO WATERCLOSETS GENERALLY, OR AS GULLEY STENCH TRAPS."
Year: 1878

page_text: LETTERS PATENT to John Dodd, of Liverpool, in the County of Lancaster,
for the Invention of "IMPROVEMENTS IN AND RELATING TO WASH-OUT
VALVELESS WATERCLOSETS, AND TO STENCH TRAPS TO BE USED THEREWITH,
WHICH STENCH TRAPS ARE APPLICABLE TO WATERCLOSETS GENERALLY, OR
AS GULLEY STENCH TRAPS."
PROVISIONAL SPECIFICATION left by the said John Dodd at the Office of
the Commissioners of Patents on the 7th August 1878.
'
"
IMPROVEMENTS IN
JOHN DODD, of Liverpool, in the County of Lancaster.
AND RELATING TO WASH-OUT' VALVELESS WATERCLOSETS, AND TO STENCH TRAPS
TO BE USED THEREWITH, WHICH STENCH TRAPS ARE APPLICABLE TO WATERCLOSETS
GENERALLY, OR AS GULLEY STENCH TRAPS."
My Invention has for its object improvements in and relating to "wash-out"
valveless waterclosets, and to stench traps to be used therewith, which stench
traps are applicable to waterclosets generally, or as gulley stench traps, and
consists,―
Firstly. In an improved form of "wash-out" or valveless watercloset, in
constructing which I form the outlet and position the same at the front of the
basin so as to be almost hid from sight by the woodwork of the seat, and thus
present a less offensive appearance to the eye than any other closet now in use.
The position of the outlet is such as to receive the urine at once, thus obviating the
use of a lead apron as commonly used. The outlet pipe or passage is provided with
a seat or flange and developes into a syphon trap and discharge orifice or pipe,
which latter is placed or formed diagonally to the trap. By this arrangement of
diagonal discharge pipe I am enabled to dispense with the step commonly used in
front of closets. I thereby reduce the cost of woodwork. The discharge pipe is

page_text: provided with a suitable ventilating orifice either moulded on the closet or attached
thereto.
"
Secondly. In an improved form of flushing rim to be moulded on and used with
"wash-out or valveless waterclosets constructed according to my Ivention, in con-
structing which I form the main outlet or flushing orifice at the back of the basin
with a flared rim, so as to wash the excrement direct to the discharge outlet in
front of the basin. The flushing rim is continued round the basin and formed with
small orifices so as to scour or wash the sides of the basin.
Thirdly. In an improved form of stench trap (applicable to "wash-out" or
valveless waterclosets according to my Invention), in constructing which I form the
stench trap of a vessel with a rounded bottom and two interior diaphragms, the
top of the vessel being provided with two distinct gratings, one of which is the
sewer ventilator, and the other an air inlet or ventilator for the soil pipe from the
watercloset. The diaphragms divide the stench trap into three parts, the first
portion being that in connection with the soil pipe from the watercloset; the second
portion answering the ordinary purposes of a gúlley stench trap, and into which I
lead, in the case of dwelling houses, the waste pipe from the bath room, sink, or
otherwise; and the third portion being in connection with the discharge orifice to
the sewer, and into which I lead the discharge pipe from the roof gutters.
The first portion of the stench trap as before stated is provided with a grating
which may be termed an inlet grating, the object being to induce a current of fresh
air to enter the soil pipe and pass up the soil pipe and thence through the ventilating
pipe to the outer atmosphere instead of, as is now often the case, sewer gases finding
their way up the soil pipe.
Although the third portion of my Invention is particularly applicable for use
with "wash-out" closets constructed according to my Invention, as such closets are
provided with ventilating orifices, it will be obvious that the stench traps are
applicable to ordinary closets, inasmuch as by their use the fresh air instead of
sewer gas will ascend the soil pipe.
This portion of any Invention is applicable as a watercloset stench trap specially,
or as a gulley stench trap.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Dodd in the Great Seal Patent Office on the 5th February
1879.
JOHN DODD, of Liverpool, in the County of Lancaster.
"IMPROVEMENTS IN
AND RELATING TO 'WASH-OUT' VALVELESS WATERCLOSETS, AND TO STENCH TRAPS
TO BE USED THEREWITH, WHICH STENCH TRAPS ARE APPLICABLE TO WATERCLOSETS
GENERALLY, OR AS GULLEY STENCH TRAPS."
My Invention has for its object improvements in and relating to "wash-out"
valveless waterclosets, and to stench traps to be used therewith, which stench
traps are applicable to waterclosets generally, or as gulley stench traps, and
consists.―
The
Firstly. In an improved form of "wash-out" or valveless watercloset, in con-
structing which I form the outlet, and position the same at the front of the basin
so as to be almost hid from sight by the woodwork of the seat, and thus present
a less offensive appearance to the eye than any other closet now in use.
position of the outlet is such as to receive the urine at once, thus obviating the
use of a lead apron as commonly used. The outlet pipe or passage is provided
with a seat or flange and developes into a syphon trap and discharge orifice or pipe,
which latter is placed or formed diagonally to the trap. By this arrangement of
diagonal discharge pipe I am enabled to dispense with the step commonly used in
front of closets; I thereby reduce the cost of woodwork. The discharge pipe is
provided with a suitable ventilating orifice, either mounted on the seat or attached
thereto.
Secondly. In an improved form of flushing rim to be moulded on and used with
"wasli-out" or valveless waterclosets constructed according to my Invention, in
constructing which I form the main outlet or flushing orifice at the back of the
basin with a flared rim so as to wash the excrement direct to the discharge outlet
in front of the basin. The flushing rim is continued round the basin and formed
with small orifices so as to scour or wash the sides of the basin.
"wash-out" or,
Thirdly. In an improved form of stench trap (applicable to
valveless waterclosets according to my Invention), in constructing which I form
the stench trap of a vessel with a rounded bottom and two interior diaphragms,
the top of the vessel being provided with two distinct gratings, one of which
is the sewer ventilator and the other an air inlet or ventilator for the soil pipe
from the watercloset. The diaphragms divide the stench trap into three parts,
the first portion being that in connection with the soil pipe from the waterclosets ;.
the second portion answering the ordinary purposes of a gulley stench trap and
into which I lead, in the case of dwelling houses, the waste pipe from the bath
roon, sink, or otherwise; and the third portion being in connection with the
discharge orifice to the sewer, and into which I lead the discharge pipe from the
roof gutters..
The first portion of the stench trap as before stated is provided with a grating.
which may be termed an inlet grating, the object being to induce a current of fresh
air to enter the soil pipe and pass up the soil pipe, and thence through the ventilating
pipe to the outer atmosphere, instead of, as is now often the case, sewer gases finding
their way up the soil pipe.
Although the third portion of my Invention is particularly applicable for use
with "wash-out" closets constructed according to my Invention, as such closets are-
provided with ventilating orifices, it will be obvious that the stench traps are
applicable to ordinary closets, inasmuch as by their use the fresh air instead of
sewer gas will ascend the soil pipe.
This portion of my Invention is applicable as a watercloset stench trap specially,
or as a gulley stench trap.

page_text: proceed to describe more in detail how the same may be carried out into practical
effect, and for that purpose I have hereunto attached a Sheet of Drawings marked
with figures and letters of reference corresponding with those in the following
explanation, the same letters of reference being used to denote like or corresponding
parts throughout the various views.
Figure 1 is a perspective elevation of a wash-out or valvėless watercloset con-
structed according to my Invention.
Figure 2 is a sectional elevation of a wash-out or valveless watercloset as shown
at Figure 1.
Figure 3 is a plan of Figure 1, shown half as an outside view and half in section
through the line A, B, Figure 1
'
.
Figure 4 is a modified arrangement of Figure 1 shown in sectional elevation.
Figure 5 is a sectional plan of flushing orifice and rim shown through the line C, D,
Figure 2.
1
Figure 6 is a section through the line E, F, Figure 5.
Figure 7 is a section through the line H, I, Figure 5.
Figure 8 is a sectional elevation of a gulley stench trap constructed according to
my Invention.
+
Figure 9 is a plan of Figure 8 viewed half from the top and half in section through
the line K, L, Figure 8.
"Figure 10 is a sectional elevation showing arrangements of closets, soil pipes,
ventilating pipes, and gulley stench trap constructed according to my Invention.
My Invention consists,―
Firstly. In constructing and positioning the outlet B at the front of the basin A
of wash-out or valveless waterclosets, as shown in the Drawings. The outlet B
thus receives the urine at once, avoiding the use of a lead apron; and the outlet is
hid from sight by the woodwork of the seat. The outlet pipe B is provided with a
base flange C and developes into a syphon trap and a discharge orifice or pipe D,
which latter is placed or formed diagonally to the trap. By this arrangement of
diagonal discharge pipe D the step commonly used in front of waterclosets can be
dispensed with. The discharge pipe D is provided with a suitable orifice E for
connection to a ventilating pipe.'
In the modification shown at Figure 4 a vertical discharge pipe is shown.
My Invention' consists,
Secondly. In an improved form of flushing rim F which is moulded on and used
with wash-out and valveless waterclosets A constructed according to my Invention.
In constructing the flushing rim F I form the main flushing orifice H with a flared
rim and position the same at the back of the basin A so as to wash the excrement
direct from the basin A to the discharge outlet B. The flushing rim F is continued
round the basin A. and formed with small orifices a so as to scour or wash the sides
of the basin.
My Invention consists,―
Thirdly. In an improved form of stench trap Z, see Figures 8 and 9. K is the
inlet for soil pipe from closet; J is the inlet for waste from bath, lavatory, or sink;
Lis the inlet for rain water or for sewer ventilation; M, discharge orifice; N is the
grating to receive surface drainage; P is a grid allowing a current of fresh air to
pass into the trap and up soil pipe K, and thence to ventilating pipes, as shown at
Figure 10.
'
It will be seen that the stench trap Z is constructed with a double rounded
bottom Q, R, so as to form with the diaphragms S, T, two distinct traps; trap Q to
prevent return of bad gas through the pipe K, the trap R to prevent return
of sewer gas. By this arrangement the water or liquid in the traps Q, R, is
separated.
Upon reference to Figure 10 the arrangement of the closets A and the trap Z
will be understood. W is a soil pipe common to the three closets A, A, A; X is

page_text: the ventilating pipe, also common to the three closets A, A, A. The connections
will be understood upon reference.
Having now described and ascertained the nature, object, and purposes of my
Invention, and shown how the same may be carried out into practical effect, what
I claim as the Invention secured to me by the herein-before in part recited Letters
Patent is,―
Firstly. The improved form of wash-out or valveless waterclosets constructed
with the outlet positioned at the front of the basin, and with a diagonal discharge
pipe developing from a syphon trap as herein-before described, and as shown at
Figures 1, 2, and 3 of the accompanying Drawings, or any modification thereof.
Secondly. The modified form of wash-out or valveless waterclosets, as herein-
before described, and as shown at Figure 4 of the accompanying Drawings.
Thirdly. The construction of flushing rim and orifice for waterclosets as herein-
before described, and as shown at Figures 5, 6, and 7 of the accompanying
Drawings.
Fourthly. The construction and arrangement of stench trap as herein-before
described, and as shown at Figures 8 and 9 of the accompanying Drawings, or any
modification thereof.
In witness whereof, I, the said John Dodd, have hereunto set my hand and
seal, this First day of February, in the year of our Lord One thousand
eight hundred and seventy-nine.