Improvements in Syphon Water Closets.
Year: 1895

page_text: Date of Application, 9th Aug., 1895
Complete Specification Left, 9th May, 1896-Accepted, 20th June, 1896
PROVISIONAL SPECIFICATION.
Improvements in Syphon Water Closets.
I, SAMUEL HUNT ROWLEY of Swadlincote in the County of Derby; Earthen-
ware Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My invention has reference to syphon water closets, and the improvements
consist of a novel construction for the purpose of admitting air to the syphon so as
to stop the syphon action before the water level in the basin gets below the
untrapping point. With this object I form in the basin an air passage leading
from a point just above the untrapping level to the upper part of the interior of
the trap or syphon, so that when during the syphon action the water in the basin
gets below the lower end of this air passage, air passes up the same into the syphon
and stops such action. Water continuing to flow into the basin from the flushing
rim and pipe then fills up the basin to the normal water level. Preferably the air
passage is formed in that part of the earthenware which divides the basin from
the trap. By providing an air inlet as above described I avoid the introduction
of foul air into the room or into the cistern, as is the case when air for
stopping the syphon action is admitted direct into the trap, as in some existing
constructions.
Dated this 9th day of August 1895
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.
improvements in Syphon water GloBELS.
I, SAMUEL HUNT ROWLEY of Swadlincote in the County of Derby, Earthen-
ware Manufacturer, 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 has reference to syphon water closets and the improvements
consist of a novel construction for the purpose of admitting air to the syphon
so as to stop the syphon action before the water level in the basin gets below the
untrapping point. With this object I form in the basin an air passage leading
from a point just above the untrapping level to the upper part of the interior of
the trap or syphon so that when during the syphon action the water in the basin
gets below the lower end of this air passage, air passes up the same into the syphon
and stops such action. Water continuing to flow into the basin from the flushing
rim and pipe then fills up the basin to the normal water level. Preferably the air
passage is formed in that part of the earthenware which divides the basin from
the syphon. By providing an air inlet as above described I avoid the introduc-
tion of foul air into the room or into the cistern as is the case when air for
stopping the syphon action is admitted direct into the trap as in some existing
constructions.

page_text: The accompanying drawing represents a vertical section of a syphon water closet
constructed in accordance with the preferred manner of carrying my invention into
effect. a is the basin and b the syphon leading therefrom to the trap and soil pipe
(not shown). c is the part of the earthenware which divides the basin a from the
syphon b. The bottom edge of the, part c constitutes the untrapping level.
From
a point just above this untrapping level I form in the part c an air passage d which
leads up and terminates in the upper part of the interior of the trap b as shown.
Consequently when during the syphon action the water in the basin a gets below
the lower end of the air passage d air passes up the passage into the upper part c
the syphon band stops the syphon action. Then as the water continues to flow
into the basin a from the.flushing rim e and the supply pipe the basin is filled up to
the normal water level.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
-claim in respect of syphon water closets is :-
1. An air passage in the basin leading from a point just above the untrapping
level to the upper part of the interior of the syphon, substantially as and for the
purpose herein before described.
2. An air passage in the part c which divides the basin from the syphon such air
passage leading from a point just above the untrapping water level to the upper
part of the interior of the syphon, substantially as shown in the drawing for the
purpose described.
Dated this 8th day of May 1896
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.