An Improved Flushing Apparatus.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
An Improved Flushing Apparatus.
1, HENRY KENT of Englefield Green, Surrey, Engineer, do hereby declare the
nature of this invention to be as follows:-
Inside the ordinary supply cistern which is fitted with a ball cock in the usual
way, I fix a double syphon, that is to say a syphon tube having two arch shaped
bends with a descending bend between them.
One end of this syphon is connected to the flush pipe, and the other end
terminates about an inch from the bottom of the cistern.
The second arch of the syphon is higher than the first, and consequently.air
forms in it, and makes what is known as an air-lock, stopping the flow of water
through the syphon.
If this air be caused to escape the whole of the water in the cistern will
immediately flow through the syphon and down the flush pipe into the closet.
I effect the escape of this air in any suitable way, as for example by a tube
connected to the crown of the arch, and descending the wall to a convenient
position, where a push-in-knob opens a valve and so forms an outlet. Or I may
pull a chain or cord and thereby open a small tap, or may operate it in other
well known way.
The intake end of the syphon is enlarged to facilitate the noiseless passage of
the water.
When the water is exhausted from the cistern the air again forms in the bend
and stops the flow of water.
Dated this 24th day of October 1894.
S. S. BROMHEAD,
97 Newgate Street, London, Agent for Applicant.
COMPLETE DT MUIFICATION.
An Improved Flushing Apparatus.
I, HENRY KENT of Englefield Green, Surrey, Engineer, 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:-
Inside the ordinary supply cistern which is fitted with a ball cock in the usual
way, I fix a double syphon, that is to say a syphon tube having two arch shaped
bends with a descending bend between them or their equivalent.
For convenience of manufacture, I substitute an inverted tube having its upper
end closed, for the second bend.
One end of this syphon is connected to the flush pipe, and the other end
terminates about an inch from the bottom of the cistern.
The second arch of the syphon is higher than the first, and consequently air
forms in it, and makes what is known as an air lock, stopping the flow of water
through the syphon.
If this air be caused to escape the whole of the water in the cistern will
immediately flow through the syphon and down the flush pipe into the closet.
71

page_text: I effect the escape of this air in any suitable way, as for example by a tube
connected to the crown of the arch, and descending the wall to a convenient
position, where a push-in-knob opens a valve and so forms an outlet. Or I may
pull a chain or cord and thereby open a small tap, or may operate it other well
known way.
The intake end of the syphon is enlarged to facilitate the noiseless passage of
the water.
When the water is exhausted from the cistern, the air again forms in the bend
and stops the flow of water.
To prevent gurgling in the syphon, I connect the two highest parts of the syphon
by a small tube, which serves to release the air in the lower bend.
I will now describe the invention, with reference to the accompanying drawings
in which:
Fig. 1, shews a vertical section of a cistern fitted with my improved double
syphon and air escape tube.
Fig. 2, shews an enlarged detail view of the push knob for releasing the
imprisoned air in the syphon, thus causing water to flow.
Fig. 3. shews an enlarged view of an alternative form of syphon, dispensing with
one of the bends shewn in Fig. 1, and substituting a cylindrical cover.
a, is the cistern provided with the usual float valve, feed pipe and cover.
b, is the double bend syphon.
c, is the outlet or delivery pipe for the water passing to water closet.
d, is the pipe for conducting away the imprisoned air contained in the second
bend of the syphon b; the position of the air is denoted by the dotted lines e. e.
f, is a push knob and spring for opening the air pipe d, by means of the vent f¹,
to release the imprisoned air in the syphon b.
9, is another pipe proceeding from the highest point of the lower bend of the
syphon, and curved upwards into the air space of the higher bend, to prevent and
stop the characteristic gurgling noise in this class of cistern, thus doing away with
one of the principal objections to the same.
(Fig. 3) is a pipe or cylinder closed at the upper end, placed over the upturned
bend of the syphon, and serving the same purpose as the double bend shown in
Fig. 1.
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 is :-
:-
1. In a flushing apparatus for water closets, the double syphon b, or its
equivalent h, with the air escape pipe and valve d. f, or their equivalents, and
with or without the air pipe 9, as herein described and set forth.
2. In a flushing apparatus, acting by means of syphon, the method of preventing
noise or gurgling by means of the air pipes d, g, or either of them, as herein
described and set forth.
Dated this 24th day of July 1895.
S. S.. BROMHEAD,
97 Newgate Street, London, Patent Agent.