Improved Flushing Apparatus for Water Cisterns.
Year: 1894

page_text: Date of Application, 11th July, 1894-Accepted, 11th Aug., 1894
OT CITIVATION.
Improved Flushing Apparatus for Water Cisterns.
We, ALBERT TUTCHER and JOSEPH TUTCHER, both of 12, Worrall Road,
Clifton, Bristol, 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 consists in improved apparatus for use in cisterns for flushing
water-closets, and for like or analogous purposes.
According to this invention the flush pipe is continued upwards in the cistern to
such a height that when the cistern is full of water the upper end of the flush pipe
is above the water level. Over and around the flush pipe thus extended into the
cistern is a bonnet or cylinder extending downwards to near the bottom of the
cistern. The said bonnet is open at the lower end but is closed at the upper end.
Around the inner face of the flush pipe at its upper extremity is fitted a pipe carried
round inside the flush pipe in the form of a ring. This tubular ring is slotted
around its inner face. From the ring extends upwards a pipe which is a continuation
of the ring and opens into it. This pipe, after passing through the cover of the
bonnet or cylinder aforesaid, is conducted out of the cistern and is fitted at any
suitable point with a spring push valve. When the push valve is opened, the water
from the main, or other source of supply with which the pipe communicates, flows
to the ring in the flush pipe; a partial vacuum is created above the water level and
the cover of the bonnet or cylinder. The water then overflows into the flush pipe
and down to the place of discharge.
Instead of the slotted ring, a different spreading device may be adopted to spread
the water over the mouth of the flush pipe. As, for example, the water may be
directed to pass between two trumpet-mouthed, bell-mouthed or conical pipes, one
being within the other.
Referring to the accompanying sheet of illustrative drawings, Fig. 1 represents
in vertical section a cistern fitted with our improved flushing apparatus. The flush
pipe a is extended upwards in the cistern b and projects above the maximum water
level. Over and around the flush pipe thus carried up into the cistern is a bonnet
or cylindrical chamber c through the cover of which is passed the pipe d by which
the flushing action is started. Stays keep the chamber c in proper central
position. In the mouth of the flush pipe a the pipe d is carried round as a tubular
ring, as seen more distinctly in the enlarged view Fig. 2. The tubular ring is
slotted around its inner face. When, as shown in the drawing, the cistern is full,
the water level is below the top of the flush pipe a. The pipe is conducted out of
the cistern and is in communication with the main or other source of water supply.
It is fitted at any suitable point with a spring push valve e, or the equivalent
thereof. On the application of inward pressure to the spring push valve spindle,
water flows to the slotted ring which spreads the water over the mouth of the flush
pipe. The water in descending in the flush pipe a induces a downward current of
air and a partial vacuum is thus created below the cover of the bonnet or cylindrical
chamber c. Accordingly, the water in the cistern overflows into the flush pipe and
by syphonic action is forcibly impelled up between the flush pipe a and the
chamber c past the stays c' and then down the flush pipe to the water-closet basin,
or to any other place which the apparatus is designed to flush.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
Improved flushing annaratus for use in water cisterne said annarstue consistine

page_text: of a bonnet or chamber such as c open at bottom and closed at top and placed over
the flush pipe prolonged upwards into the cistern to a point above the maximum
water level and communicating with the water main or other source of water supply,
either by means of a pipe such as d with tubular slotted ring situated in the mouth
of the flush pipe, or by other suitable water-spreading device; the arrangement
being such that flushing is started by admitting water to the flush pipe through the
agency of a spring push valve, or the like, fitted in the starting pipe, substantially
as hereinbefore described with reference to the accompanying sheet of illustrative
.drawings.
Dated thie 0th day of July 1801
NICHOLAS WATTS,
Chartered Patent Agent, Bristol.