Year: 1894

page_text: Date of Application, 10th July, 1894
Complete Specification Left, 6th Apr., 1895-Accepted, 18th May, 1895
1, THOMAS WILLIAM TWYFORD of Cliffe Vale Pottery, Hanley, in the
County of Stafford, Manufacturing Sanitary Potter, do hereby declare the nature
of this invention to be as follows:-
My invention pertains principally to single-trapped syphonic water closets, and
is designed to ensure greater efficiency in flushing with a given quantity of water,
than has heretofore been accomplished.
Now by my invention, as hereinafter described, an ordinary two gallon cistern
forms an efficient flushing medium, as the closet is so constructed that the fluid
conveyed to the pan is made to assume a form resembling the vortex of a whirlpool,
that is to say, the body of the flushing fluid is made to move with a circular motion,
which forms a cavity in its middle, into which all solid bodies, such as soil and
paper, coming within its influence are centripetally drawn and subsequently engulfed
on the syphonage being started.
อ
In carrying out my invention, the pan or basin, which has a contracted and open
bottom, formed dished or hopperwise, has a flushing rim, whilst the said opening
in the bottom is in direct communication with the trap, consisting of a nearly
upright bend or ascending broad passage, continued into a like descending passage,
which terminates in the discharge or soil pipe. The ascending passage constitutes
both the seal to the trap and the short leg of the syphon, whilst the descending
passage, which is separated from the ascending one by a rising wall, and connected
by a bend, constitutes the long leg of the syphon.
That part of the flushing rim situated immediately over the bend of the syphon,
is formed into a box or chamber, divided off into two compartments, with one of
which the neck of the supply pipe is in direct communication. This compartment
is a primary one and receives the whole of the flushing water, whilst the other
compartment, which is located inwards of the primary one, receives only that
part of the flushing water which is conveyed to the rim through a hole or
passage.
Leading from the primary compartment is a descending trunk passage, with its
lower part, which is directed towards the bottom of the trap, separating itself into
two passages, one forming a trap-sluicing branch, and the other a rim-supply
branch. After leaving the trunk passage, the sluice branch descends downwards,
and then bends or returns back hookwise, and its nozzle or outlet (which may be
contracted) euters the extreme lower part of the ascending leg at a point below the
mouth of the dished or hopper-shaped lower part, so that a stream of water leaving
the said nozzle rushes past the outlet to the pan and up the trap passage, and so
gives a whirling motion to the seal, forces the backwater into the pan, and carries
the seal over the bend of the syphon, hence the syphonage is started.
The rim supply branch, after leaving the main branch, ascends upwards and
empties itself into the secondary compartment, and the water then passes through
a passage in its outer wall to the flushing rim.
Now the primary compartment of the box chamber has an opening or passage
through its bottom, leading to the bend or bridge of the syphon trap, and coming

page_text: Operation.
Assuming that the closet is required to be flushed, the supply enters the neck of
the pan, and from thence passes into the primary chamber, and the larger part of the
water passes down the trunk passage, and the other part through the outlet into
the descending limb of the trap. The water which passes down the trunk is then
directed into two streams, one passing through the sluice pipe to the bottom of the
trap, and contiguous to the open bottom of the pan, and the other, through the
rim-supply branch, to the flushing rim.
Now the water which passes through the rim descends into the pan, and a part
of the water which passes through the sluice bend is directed up the trap, and the
other part forms a back-water and rises in the basin, whilst the whole of the water
lying within and supplied to both basin and trap has imparted to it, a whirling
motion, and as the air within the descending limb of the trap is partially removed,
and water in ascending limb is lifted by the injector-like action of the sluice,
syphonage is started, and the concentrated soil and paper drawn into the vortex of
the whirling water, are bodily and precipitously forced out of the pan and
transported centrally through the trap, without the said soil and paper coming into
contact with the sides of either the pan or the trap.
In closets constructed according to this invention, the throwing of slops into the
pan will not start the syphonic action, and further, by making the water for the
flushing rim first descend and then ascend, effluvia from the trap is cut off and a
second seal is made.
Dated the 7th day of July 1894.
THOMAS WILLIAM TWYFORD,
By Henry Skerrett,
Agent for Applicant.
VIUSO.
I, THOMAS WILLIAM TWYFORD of Cliffe Vale Pottery, Hanley, in the
County of Stafford, Manufacturing Sanitary Potter, 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 pertains principally to single-trapped syphonic water closets, and
is designed to ensure greater efficiency in Hushing with a given quantity of water,
than has heretofore been accomplished.
Now by my invention, as hereinafter described, an ordinary two gallon cistern
forms an efficient. flushing medium, as the closet is so constructed that the fluid
conveyed to the pan is made to assume a form resembling the vortex of a whirlpool,
that is to say, the body of the flushing fluid is made to move with a circular motion,
which forms a cavity in its middle into which all solid bodies, such as soil and
paper, coming within its influence are centripetally drawn and subsequently engulfed
on the syphonage being started.
In carrying out my invention, the pan or basin, which has a contracted and open
bottom formed dished or hopperwise, has a flushing rim, whilst the said opening in
the bottom is in direct communication with the trap, consisting of an ascending
broad passage, continued into a like descending passage, which terminates in the
discharge or soil pipe. The ascending passage constitutes both the seal to the trap
and the short leg of the syphon, whilst the descending passage, which is separated
from the ascending one by a rising wall, and connected by a bend, constitutes the
long leg of the syphon.

page_text: That part of the closet structure situated immediately over the bend of the
syphon is formed into a box or chamber, divided off into two compartments, with
one of which the neck of the supply pipe is in direct communication. This
compartment is a primary one and receives the whole of the flushing water, whilst
the other compartment, which is located inwards of the primary one receives only
that part of the flushing water which is conveyed to the flushing rim through a
hole or passage.
Leading from the primary compartment is a descending trunk passage, with its
lower part, which is directed towards the bottom of the trap, separating itself into
two passages, one forming a trap-sluicing branch, and the other a rim-supply
branch. After leaving the trunk passage, the sluice branch descends downwards,
and then bends or returns back hookwise, and its nozzle or outlet (which may be
contracted) enters the extreme lower part of the ascending leg, at a point below
the mouth of the dished or hopper-shaped lower part of the pan, so that a stream
of water leaving the said nozzle rushes past the outlet to the pan and up the
trap passage, and so gives a whirling motion to the seal, forces the back water into
the pan and carries the seal over the bend of the syphon, hence the syphonage is
started.
The rim supply branch, after leaving the main branch, ascends upwards and
empties itself into the secondary compartinent, and the water then passes through
a passage in its outer wall to the flushing rim.
The primary compartment of the box chamber has a trapped or other opening or
passage through its bottom, leading to the descending leg of the syphon.
Figure 1 of the accompanying drawing represents in vertical section a single
trapped syphonic water closet having improvements in accordance with my
invention. The said view shows how the primary and secondary chambers are in
communication with the trunk passage and rim respectively and how the water
issuing from the nozzle of the jet branch is directed up the ascending passage of
the trap.
Figure 2 represents a horizontal section of Figure 1 upon the dotted liner,
showing the relative positions of the chambers, which are in communication with
the rim and neck or inlet respectively, and also the view shows, in dotted lines, the
direction of the trunk passage, which is. diverted, at its after end into two
passages, one leading to the jet branch and the other to the flushing rim branch.
Figure 3 represents a section of the trapped passage from the primary chamber
to the upper part of the descending leg.
Figure 4 is a horizontal section of Figure 1 upon the dotted line A.
Figure 5 is an underside plan of the closet, showing in dotted lines the direction
of the branches for feeding both the rim and nozzle with water.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
a is the pan or basin of the closet, having a contracted and open bottom at a', in
direct communication with the trap b, which consists of an ascending broad passage
terminating in a bend or crown b', and from thence passing into a descending
passage or leg b³, whose open end 3, is connected with the soil pipe. The
ascending passage b, constitutes both the, seal to the trap and the short leg of the
syphon, of which the passage 6, is the long leg. The said ascending passage is
separated from the descending one by a rising wall b
That part of the closet structure situated immediately over the bend of the
syphon is formed into a box or chamber c, divided off into two compartments c', c³,
into the former c', (which is the primary chamber) of which the flushing water
enters through the neck c, whilst the compartment c³, which is the secondary one
and is located inwards of the primary one, receives only that part of the flushing
water which is required to be conveyed to the rim d.
Leading from the primary compartment c¹, is a descending trunk passage e, with
the upper part having a mouth or entrance e¹ and the lower part, separating
itself into two passages, viz., a returned or hook shaped jet or trap sluicing

page_text: Assuming that the closet is required to be flushed, the supply enters the neck c³
of the pan, and from thence passes into the primary chamber c¹, and the larger part
of the water passes down the trunk passage e and the small part through the
outlet into the descending limb 6, of the trap. The water which passes down
the trunk e, is then directed into two streams, one passing through the sluice
pipe to the bottom of the trap, and contiguous to the open bottom of the pan,
and the other, through the rim-supply branch g, to the flushing rim d.
Now the water which passes through the rim descends into the pan, and a part
of the water which passes through the sluice bend is directed up the trap b, and
the other part forms a back-water and rises in the basin, whilst the whole of the
water lying within and supplied to both basin and trap has imparted to it, a
whirling motion, and as the air within the descending limb of the trap is partially
removed, and water in ascending limb is lifted by the injector-like action of the
sluice, syplouage is started, and the concentrated soil and paper drawn into the
vortex of the whirling water, are bodily and precipitously drawn out of the pan
and transported centrally through the trap, without the said soil and paper coming
into contact with the sides of either the pan or the trap.
In closets constructed according to this invention, the throwing of slops into the
pan will not start the syphonic action, and further, by making the water for the
Hushing rim first descend and then ascend, effluvia from the trap is cut off and a
second seal is made in the trunk and branch pipes e and g.
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 :-
First. In syphonic water closets, or single trap syphonic water closets, combining
with the same, a double chambered box, with a main trunk passage leading from
the primary chamber, terminating in rim supply and sluicing branches, substantially
as and for the purpose as described and set forth.
Secondly. In syphonic water closets, or single trap syphonic water closets,
combining with the same, a double chambered box, with the secondary chamber
being in communication with the flushing rim and receiving its water from a rim
supply passage, which is oue of the branches terminating the trunk passage as
referred to in the preceding claim, substantially as and for the purpose as described
and set forth.
Thirdly. In syphonic water closets, or single trap syphonic water closets, the
combination with a pan of the construction described, of a flushing rim having
tangential or inclined piercings or jet outlets, substantially as and for the purpose
described and set forth.
Fourthly. In syphonic water closets or single trap syphonic water closets, the
combination with a pan of the construction referred to by Claims "First and
23

page_text: "
Secondly," of a return or hook-shaped sluice jet or branch, substantially as and
for the purpose described and set forth.
Fifthly. In syphonic water closets or single trap syphonic water closets, the
combination with a pan of the construction referred to in the preceding claims, of a
water iulet or a ventilated water inlet i, substantially as described and set forth in
Figures 1, 2 and 3.
Sixthly. In syphonic water closets or single trap syphonic water closets, the
general construction, arrangement and combination of the parts, less the flushing
rim and the ventilated water inlet, substantially as and for the purpose described
and set forth.
Seventhly. In syphonic water closets, or single trap syphonic water closets, the
general construction, arrangement and combination of the parts, substantially as
and for the purpose as described and set forth.
ני מ
THOMAS WILLIAM TWYFORD,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.