Year: 1886

page_text: . I, HARRY WHYTE BUCHAN of 15 Spottiswoode Street in the City of Edinburgh,
Clerk, do hereby declare the nature of this invention to be as follows:-
My invention which relates to water closets consists of improvements in the
construction of the basin with which a trap is combined thereby dispensing with
a separate trap or S-bend in the discharge pipe or soil pipe, while a valve fitted in
the discharge pipe or outlet beyond the basin trap serves to keep the basin filled
with water which in its discharge clears the trap without breaking the seal, and it
comprises improvements in the formation of the overflow which is taken from the
lower end of the basin at a point which is always sealed and prevents the
admission to the basin of sewer gas from the soil pipe into which the overflow
discharges.
In one modification the trap is formed by the side of the basin from the
contracted discharge orifice of which a discharge branch forming part of the ware
or "crockery" is led up the inclined side of the basin and terminates in a chamber
with a vertical outlet connected to the soil pipe the lower edge of the basin where
it merges into the discharge branch being lower than the lowest point of the bend
over which the water discharges to the vertical outlet and forming the "dip," of
the trap. In the vertical outlet or between it and the soil pipe is formed an
ordinary "Bramah" valve trunk provided with the valve and usual fittings
connected to and operated from the closet handle. The valve when closed serves
to keep the closet basin filled to or nearly to the upper end of the overflow pipe,
and when opened, the body of water within the basin, in discharging, sweeps out
before it the contents of the trap or inclined discharge branch while in the event
of leakage through the valve the water left in the trap seals it and prevents the
admission of sewer gas.
When using a plug valve instead of a Bramah valve I form a valve chamber at
the side of the basin but in a piece with it, the inclined discharge branch or a
discharge pipe formed independently of the side of the basin being connected from
the contracted outlet orifice of the basin to said valve chamber to form the trap or
seal for the basin. The plug valve fits in a tapered seat in the vertical outlet, and
when raised to discharge the basin, it is lifted up clear of the outflowing contents of

page_text: the basin. When the valve is closed the fresh water rises in the valve chamber to
the level of that in the basin to which it is directly connected by the inclined
discharge pipe or trap.
In each case the overflow is formed by a duct on the outside of the basin or by
a separate pipe which is connected to the basin at a point below the dip of the
trap and therefore always under water, and which rises up to the desired level and
is led to the soil pipe into which it discharges at a point under the Bramah valve
or plug valve. The basin is flushed in the ordinary way.
The valve chamber or vertical outlet is provided with a movable cover to
permit of admission to the valve or of inspection of the outlet.

page_text: I, HARRY WHYTE BUCHAN of 15 Spottiswoode Street in the City of Edinburgh,
Clerk, 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, which relates to water-closets, consists of improvements in the
construction of the basin with which a trap is combined whereby a separate trap
or $ bend in the discharge pipe or soil pipe may be dispensed with while a valve
fitted in the discharge pipe or outlet beyond the basin trap serves to keep the
basin filled with water which in its discharge clears the trap without breaking the
Beal; and it comprises improvements in the formation of the overflow which is
taken from the lower end of the basin at a point which is always sealed and
prevents the admission to the basin of sewer gas from the soil pipe into which the
overflow discharges.
As represented under one modification of the closet in elevation at figure 1, and
in vertical section at figure 2 of the annexed drawings, the trap is formed by the
side A of the basin A¹ from the contracted discharge orifice a of which a discharge
branch B forming part of the ware or "crockery" is led up the inclined side of the
basin and terminates in a chamber C with a vertical outlet D connected to the soil
pipe E the lower edge a¹ of the basin where it merges into the discharge branch B
being lower than the lowest point of the bend B' over which the water discharges
to the vertical outlet D, and forming the "dip" of the trap. In the vertical
outlet D or between it and the soil pipe is formed an ordinary "Bramah"
trunk provided with the valve F and usual fittings connected to and operated from
the closet handle. The valve F when closed serves to keep the closet basin filled
to or nearly to the upper end of the overflow pipe G, and when the valve is opened
the body of water within the basin in discharging sweeps out before it the contents
of the trap or inclined discharge branch B, while in the event of leakage through
the valve the water left in the trap formed at the bottom of the basin seals it and
prevents the admission of sewer gas.
valve
When using a plug valve instead of a "Bramah" valve as represented in
elevation and vertical section at figures 3 and 4 I form the valve chamber C at
the side of the basin in a piece with the inclined discharge branch or a discharge
pipe B formed independently of the side of the basin being connected from the
contracted outlet orifice a of the basin to said valve chamber to form the trap or
seal for the basin. The plug valve F¹ fits in a tapered seat in the vertical outlet D,
and when raised to discharge the basin it is lifted up clear of the overflowing
contents of the basin that is to say above the inclined discharge branch B. When
the valve is closed the fresh water rises in the valve chamber C to the level of
that in the basin to which it is directly connected by the inclined discharge pipe
or trap.
In each case the overflow is formed by a duct G on the outside of the basin or by
a separate pipe which is connected to the basin at a point below the dip of the
trap as at g figures 2 and 4 and therefore always under water, said duct or pipe

page_text: rising up to the desired level and being connected by a pipe H to the soil pipe E
into which it discharges at a point under the "Bramah" valve or plug valve, or it
may be connected to any other suitable discharge pipe. The basin is flushed in the
ordinary way.
The valve chamber C or vertical outlet is provided with a movable cover C¹ to
permit of admission to the valve or of inspection of the outlet.
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. A combined closet basin and trap having an inclined discharge branch a
vertical outlet controlled by a "Bramah" valve, and an overflow pipe or duct
connected to the basin at a point below the dip of the trap, substantially as
herein before described with reference to figures 1 & 2 of the annexed drawings.
2. A combined closet basin and trap having an inclined discharge branch formed
independently of the side of the basin a vertical outlet controlled by a plug valve
and an overflow pipe or duct connected to the basin at a point below the dip of
the trap substantially as described with reference to figures 3 and 4 of the annexed
drawings.
C