Improvements in Syphons for Water Closet Cisterns.
Year: 1893

page_text: Date of Application, 18th May, 1893
Complete Specification Left, 19th Feb., 1894-Accepted, 7th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Syphons for Water Closet Cisterns.
J, JOHN WOODCOCK, of 28 Russell Street, Plymouth, Brass Founder, do hereby
declare the nature of this invention to be as follows:-
My invention relates to improvements in syphons for water closet cisterns, and
has for its object to cause the cistern to be filled afresh each time the closet pan is
flushed, and to ensure that a sufficient volume of water shall be forced under
considerable pressure into the discharge pipe leading to the said closet pan.
The syphon placed in the cistern, consists of two chambers, communicating
together, one of which chambers lead to the discharge pipe. In one of said
chambers moves a plunger passing through a tubular extension, formed in the top
of the syphon, and the upper end of which is provided with a ring, passing through
a perforation at the inner end of the fulcrumed lever, fixed to or formed integrally
with, the cistern wall. The outer end of said lever carries a chain provided with a
handle whereby the lever can be depressed in order to raise the plunger. This
plunger consists of a
spindle or rod, and of a frame fixed to a slotted plate the
opening in which is closed during the upward motion of the plunger by the
movable plate, flap, or clack valve; when the handle is pulled, a volume of water
is drawn into one of the chambers of the syphon, causing a corresponding fall of
water in the cistern, wherein the ball will now sink, and the admission valve will
open, allowing of a corresponding volume of water to flow in the cistern. The
water thus raised flows over into the chamber whence it will pass through the
discharge pipe in order to fall into the closet pan.
This ball valve is of
ordinary construction, such as used in all cisterns and needs no description, the
plunger acts in this case as a piston; but, when the handle is released the weight
of the plunger will cause the latter to fall, the water in the syphon passing through
the opening in the bottom plate while pushing up the movable plate or clack valve,
which is notched at each end in order to be conveniently guided along the vertical
ends of the frame.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Syphons for Water Closet Cisterns.
I, JOHN WOODCOCK, of 28 Russell Street, Plymouth, 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 syphons for water closet cisterns and
has for its object to cause the cistern to be filled afresh each time the closet pan is
flushed and to ensure that a sufficient volume of water shall be forced under
considerable pressure into the discharge pipe leading to the said closet pan.
In the accompanying drawings,
Figure 1 is a sectional elevation showing the application of my improved syphon
to a water closet cistern.

page_text: Figure 2 is a vertical section, and Figure 3 a rear view respectively of the
syphon alone.
S. is the syphon placed in the cistern C as shown in Figure 1 and consisting of
two chambers 6 and 6' (Fig. 2) communicating together the latter chamber leading
to the discharge pipe O. In the chamber moves a plungers passing through a
tubular extension formed in the top of the syphon, and the upper end of which is
provided with a ring r passing through a perforation at the inner end of the lever !
fulcrumed at p on the lug n fixed to or formed integrally with the cistern wall.
The outer end of the lever / carries a chain e provided with a handle h whereby the
lever can be depressed in order to raise the plunger s. This plunger consists of a
spindle or rod s and of a frame a fixed to a slotted plate a' the opening in which is
closed during the upward motion of the plunger by the movable plate, flap, or
clack valve v. When the handle is pulled a volume of water is drawn in the
direction of the arrows shown in Figure 1 into the chamber of the syphon causing
a corresponding fall of water in the cistern wherein the ball will sink and the
admission valve will open allowing of a corresponding volume of water to flow in
the cistern C. The water thus raised follows the direction of the arrows shown in
Fig. 2 and flows over into the chamber whence it will pass through the discharge
pipe O in order to fall into the closet pan. This ball valve is of ordinary con-
struction such as used in all cisterns and needs no description the plunger acts in
this case as a piston but when the handle is released the weight of the plunger will
cause the latter to fall the water in the syphon passing through the opening in the
plate a while pushing up the movable plate which is notched at each end in
order to be conveniently guided along the vertical ends of the frame a.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed declare that what 1
claim is :-
The improved syphon for water closet cisterns arranged, constructed, and
operating substantially as herein described and shown and for the purpose set
forth.
Dated this 19th day of February 1894.
JAMES
STEVENSON,
1, Furnival Street, Holborn, E.C., Agent for Applicant.