Improvements in Siphons for Cisterns for Water Closets.
Year: 1894

page_text: Date of Application, 17th Jan., 1894
Complete Specification Left, 12th May, 1894-Accepted, 16th June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Siphons for Cisterns for Water Closets.
JOSEPH WYATT HANCOCK Senr. 49 Montague Road Clarendon Park
Leicester, Gas Fitter. I JOSEPH WYATT HANCOCK Senr. do hereby declare
the nature of this invention to be as follows:-
My siphon is made in the form of the letter U turned upside down-The outlet
passes through the bottom of the cistern, but the inlet is turned along the bottom
of the cistern at the back-The inlet is made much larger than the outlet-say
for about 4 or five inches-The larger end forms a cylinder-in which works a
piston The piston has an opening in the end through which the water passes on
through the siphon-On the end of the piston is fitted a valve which opens towards
the smaller part of the siphon-The piston rod is connected to a lever-to which
the chain is attached When the chain is drawn down the piston is driven up the
cylinder, the water closing the valve-The water is driven up the siphon-
When the siphon is charged and the piston has reached the end of the cylinder
the valve opens to allow the whole of the remaining water to pass through the
piston the piston then falls back into position ready for use.
Dated this 15th day of January 1894.
JOSEPH WYATT HANCOCK, SENR.
COMPLETE SPECIFICATION.
Improvements in Siphons for Cisterns for Water Closets.
JOSEPH WYATT HANCOCK Senr. 49 Montague Road Clarendon Park
Leicester Gas Fitter 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 relates to improvements in the siphon arrangements of cisterns
such as are used with water closets, the object of my invention being the simpli-
fication and cheapening of this class of siphon arrangement.
The cistern of the ordinary size is fitted with a siphon, one end of which passes
through the cistern and is connected to the flushing pipe. The other end of the
siphon is brought to near the bottom of the cistern and connected to a cylinder
which is fitted with a piston so connected with the flushing handle that upɔn
moving the latter the water in the cylinder is forced up the siphon, the flow of
which is thus started, and it continues until the cistern is emptied. The piston
has a valve which allows the water to flow through it.
In order however that my invention may be fully understood I have attached
hereto one sheet of drawings showing in sectional elevation a water closet cistern
fitted with my improved siphon arrangement.
The cistern a which is approximately of a capacity equal to the required flush
is fitted with a siphon 6 which passes through the bottom of the cistern and is
attached thereto by any of the usual methods. From its connection at the bottom
of the cistern the siphon passes to near the top of the same, and is then returned
and connected to a cylinder c placed at or near the bottom of the cistern. The
capacity of the cylinder is such that upon pushing in the piston d the water in the
cylinder is forced up the pipe b and thus starts the siphon. The piston d is in
the form of a hollow ring provided with a bracket d¹ to which the piston rod dª is

page_text: attached. The outside of the piston is slightly curved to allow for the angular
movement of the rod and at the back of the piston is a flap valve d³. The
piston rod d is connected to a T lever e fulcrumed at e¹ and provided with a
balance weight e³, and at e³ with means for connecting the same to a wire or chain
from the handle.
The cylinder may be of any suitable section and the piston is made an
easy fit within the same. In some cases the bottom of the cistern is recessed to
receive the cylinder.
As an example of the relation between the size of the siphon pipe and cylinder
I find that an inch and quarter siphon pipe in a cistern having water to within an
inch an quarter of the top of the siphon can be started to flow with a cylinder two
inches in diameter and about four inches stroke, but these proportions are varied
according to circumstances.
In addition to the parts shown the cistern is fitted with a supply pipe and a ball
valve of ordinary construction which is arranged to stop the water at a given
-distance from the top of the siphon.
When the cistern is full the siphon is started by pulling down the end of
the T lever which forces in the piston and drives the water in the cylinder up the
siphon and over the bend of the same. The siphon then acts as usual and the
valve in the piston opens to allow the water in the cistern to pass through.
The parts, after the siphon has been started are returned to their normal position
by the balance weight.
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 siphon arrangements for cistern used with water closets and for similar
purposes, attaching one end of the siphon to a cylinder fitted with a pistou which
has a valve so arranged that when the piston moves in one direction it acts upon
the water in the cylinder to start the action of the siphon, and which also allows
the water drawn by the siphon when started, to pass through it substantially as
-shown and described in the accompanying drawing and Specification.
2. A siphon arrangement for cisterns used with water closets and similar purposes
constructed and arranged substantially as shown and described in the accompanying
drawing and Specification.
1004
ZOOT LOT TO COMITAT BITTA D
W. H. POTTER, M.I.M.E.,
Newcastle Chambers, Nottingham, Agent for the Applicant.