Improved Syphon Flushing Cistern.
Year: 1894

page_text: Date of Application, 10th Nov., 1894-Accepted, 15th Dec., 1894
CUMI ELE
Improved Syphon Flushing Cistern.
I, WALTER WHEELER, trading as John Wheeler & Son of Langley in the
County of Worcestershire, Ironfounder, 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 improvements are devised with a view to afford increased facilities for
starting the syphonage of cisterns used for flushing water closets, urinals, and the
like, and constructing a more simple and effective cistern than those in use
heretofore.
The main increased facility is the provision of a syphon which is not bored at
the top for rods attached to the plunger or the like, which, by constant use
become worn and admit air into the syphon chamber during syphonage and thus
reduces the vacuum and retards or stops the proper action of the syphon.
In carrying out my invention, I employ a cistern box of ordinary shape and any
convenient size, and on the bottom of same fix a cylinder completely open at the
top, and connected at the bottom to a standpipe which is carried upwards to a con-
venient height and then turned downwards to the bottom of the cistern where an
outlet is properly connected to same.
Inside this cylinder is then arranged a metal plunger connected to another
plunger above it, which covers the cylinder within a short distance from the
bottom of same. On the top of this upper plunger two lugs, or only one, are
made or cast thereon for the purpose of attaching a lever, or chain, or any other
convenient attachment wherewith to move the plungers up or down the aforesaid
cylinder. The plungers or the cylinder may be round or any other convenient
shape. Upon the lever or chain being pulled down the plungers are elevated
from their normal position, and when released by the action of letting go the lever
or chain, they fall towards the bottom of the cylinder and force the water before
them up the stand pipe, which forms a vacuum therein, and the water contained in
the cistern syphons out through the outlet pipe.
The supply of water is provided through a ball valve as is usual, but this, to
prevent confusion, is not shewn in the accompanying drawings, by which the
invention is more clearly explained.
Fig. 1. is a longitudinal section of the cistern, shewing the box a, the cylinder c
and the standpipe and outlet b, the plungers d attached to a lever e and shewing
a fulcrum for same at f and a cord attached thereto g.
The ordinary water level in the cistern is indicated by the dotted line h. The
dotted lines of the lever and plungers shew them moved preparatory to their action
of starting the syphonage.
Fig. 2. is a plan of the cistern looking down from the top of same.
The letters used in indicating the various parts in Fig. 1 are identical in the case
of Fig. 2.
It is evident that the details may be varied without departing from the
principle of the invention.
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. For syphon cisterns the employment of a duplex plunger enclosing the
cylinder of such syphon, actuated by a lever or chain attached to same.

page_text: 2. The action of a plunger or plungers working in and over a cylinder without
having a hole or holes bored through or into the syphon chamber for admitting
rods or the like substantially as set forth herein.
Dated this Ninth day of November 1894.
WALTER WHEELER,
Applicant.