Improvements in Water Closets.
Year: 1891

page_text: Date of Application, 1st Sept., 1891
Complete Specification Left, 30th May, 1892-Accepted, 23rd July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Water Closets.
We, SIDNEY JENNINGS and JOHN MORLEY, both of Palace Wharf, Stangate,
Lambeth, in the County of Surrey, Sanitary Engineers, do hereby declare the
nature of this invention to be as follows:-
This invention relates to water closets which are emptied by syphoning.
In such closets inconvenience is caused by the pouring slops into the pan
starting syphonic action, leaving the pan empty and trap unsealed if the
handle is not pulled to admit fresh water. To obviate this objection we
adopt the following arrangement:-The supply pipe from the water waste
preventor or other source is branched at the bottom, one branch leading into the
pan in the ordinary manner whilst the other branch is led first downwards, then
upwards and again downwards into the top of the long leg of the syphon pipe from
the pan. At the top bend of the water pipe is fixed a valve opening inwards. If
slops are poured into the pan this valve admits air and prevents any syphonic action
being set up but when the handle is pulled the flow of water is divided, part flushing
the pan in the ordinary manner whilst part rushes past the air valve and holds it
closed so that no air can enter. This water also in flowing down the long leg of
the syphon starts the syphonic action and empties the pan which is afterwards filled
with clean water by the usual after-flush apparatus.
.
In cases where it is preferred to trap the long leg of the syphon we provide a
special connection for an air pipe leading into the open air from the trap as without
this the syphonic action would not take place. "
Dated this 1st day of September 1891.
CARPMAEL & Co.,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Water Closets.
We, SIDNEY JENNINGS and JOHN MORLEY, both of Palace Wharf, Stangate,
Lambeth in the County of Surrey, Sanitary Engineers, 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 waterclosets which are emptied by syphoning. In such
closets inconvenience is caused by the pouring slops into the pan starting syphonic
action, leaving the pan empty and trap unsealed if the handle is not pulled to admit
fresh water.
To obviate this objection we adopt the arrangement shown in the drawings, Figure 1
being a longitudinal vertical section, Figure 2 a back elevation and Figure 3 a plan.
Figure 4 shows the details of the air valve to a larger scale, the supply pipe u
from the water waste preventor or other source is branched at the bottom, one
branch a leading into the pan in the ordinary manner whilst the other branch a² is
led first downwards, then upwards and again downwards into the top of the long
leg of the syphon pipe b from the pan. At the top bend of the water pipe a² is
fixed a valve c opening inwards. If slops are poured into the pan this valve admits
air and prevents any syphonic action being set up but when the handle is pulled
the flow of water down the pipe a is divided, part passing by the pipe a' and flushing
the pan in the ordinary manner whilst part rushes along the pipe a past the air
valve c and holds it closed so that no air can enter. This water also in flowing
[Dai 37

page_text: down the long leg b¹ of the syphon starts the syphonic action and empties the pan
which is afterwards filled with clean water by the usual after flush apparatus.
Figure 4 is a section of the air valve c. The top of its case is provided with a
ring of holes c¹ for the admission of the air. is a disc of indiarubber held loosely
at its middle by a nut e³ on a spindle c. The holes e' are formed at the bottom of
a groove e so that the indiarubber does not come against the bottom of the holes.
and any permanent deformation therefore of it. by the pressure is round a complete
ring instead of only at the holes as would otherwise be the case. The rubber thus
always makes a tight joint against its seat although it is free to turn upon the
spindle is a cap on the spindle which hides the holes and prevents any
water escaping from them from splashing. Such water collects round the rim c¹
and flows back.
a
In cases where it is preferred to trap the long leg of the syphon we provide
special connection for an air pipe d leading into the open air from the trap as without
this the syphonic action would not take place.
:
Having now particularly described and ascertained the nature of our said inven-
tion and in what mauner the same is to be performed we declare that what we
claim is :-
1. In water closets the combination of a pan a syphon pipe leading from the pan,
a water supply pipe with two branches one to the pan and the other to the long
leg of the syphon and an air inlet valve in the upper part of the latter branch.
2. In water closets the combination of a pan, a syphon pipe leading from the pan,
a trap at the bottom of the long leg of the syphon, a water supply pipe with two
branches one to the pan and the other to the long leg of the syphon, an air inlet
valve in the upper part of the latter branch and an opening froin the air into the
lower end of the long leg of the syphon.
3. Water closets substantially as described and shown in the drawings.
SIDNEY JENNINGS.
JOHN MORLEY.