Improvements in and relating to Syphons for Water-closet and other Cisterns.
Year: 1894

page_text: Date of Application, 26th Apr., 1894
Complete Specification Left, 24th Jan., 1895-Accepted, 2nd Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in and relating to Syphons for Water-closet and
other Cisterns.
I, WILLIAM Ross Junior of 44 South Portland Street in the City and County
of Glasgow, Engineer, do hereby declare the nature of my invention to be as
follows:-
This invention has reference to improvements in and relating to syphons for
water closet and other cisterns for discharging the contents of the cistern at each
operation, and preventing waste of water.
66
"
According to my improvements the syphon is formed of an outer vertical tube
closed at its top end and open at its lower end to rest preferably in a wel'
shaped space at bottom of cistern; and an inner tube with radial arms soldered or
otherwise secured to the outer tube.
This inner tube is open at both ends, the top end being preferably a short
distance down from closed top of outer annular tube so as to communicate
therewith; while its lower end extends past the bottom of outer tube to fit over a
short guide stand pipe in lower part of cistern, and rest on a rubber washer round
it at bottom of cistern.
This short stand pipe has the usual discharge water pipe coupled or connected to
it, and it is formed with a series of ports or openings above washer at bottom of
cistern over which the inner tube bears in its normal lower position.
The outer annular tube forms the shorter limb of the syphon and the inner
tube and its lower pipe connections the longer limb, and when the lower part
of inner tube is elevated above the ports in guide stand pipe the water passes
through and up the space between inner and outer tube and then down the inner
tube to empty syphon.
The top of outer tube is formed or fitted with a metal disc preferably of saucer
shape, and a socket closed at lower end extends from this down some distance
in inner tube. A vertical central spindle fits freely within this guide socket,
and has a rubber or like disc of flat or of cup shape fitted round it, preferably
between a collar and screw washer, and this rubber disc bears over the saucer
shaped top of outer tube and a weighted loose metal cover mounted on spindle
preferably bears over rubber disc. The upper end of central spindle is connected
to the usual operating lever of cistern, and when this is actuated by the usual
drawing cord or chain, the rubber disc by air suction raises the outer tube
carrying the inner tube and starts the action of the syphon which will then go on
discharging until the cistern is emptied.
A tapered slotted pin or equivalent device would be fitted from the side of metal
disc on top of outer tube to regulate the admission of air between it and the rubber
disc, so that the time period which the syphon tube should be kept raised by the
suction disc can thus be adjusted.
On the operator letting go the actuating cord the rubber disc will automatically
fall down over the saucer shaped metal disc of syphon ready for the next action of
discharging the cistern.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.

page_text: Improvements in and relating to Syphons for Water-closet and
other Cisterns.
1, WILLIAM Ross, Junior, of 44 South Portland Street, in the City and County
of Glasgow, Engineer, do hereby declare the nature of my invention, and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement in writing, that is to say :-—
This invention has reference to improvements in and relating to syphons for
water closet and other cisterns for discharging the contents of the cistern at each
operation, and preventing waste of water.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended an explanatory sheet of drawings in which the same reference letters
are used to indicate corresponding parts in all the figures where shown.
Figure 1 is an external elevation of my syphon flushing appliance and Figure 2
a corresponding plan view.
Figure 3 is a sectional elevation corresponding to Figure 1, and Figure 4 is a
horizontal section as taken on the line 3-3 of Figure 3.
Figure 5 is a sectional elevation showing the appliance as practically fitted to
cistern. While Figures 6 and 7 are external and sectional elevations of part of the
appliances as fitted in the form of a discharge valve.
Referring to these drawings:-According to my improvements the syphon is
formed of an outer vertical tube closed at its top end A, and open at its lower end
to rest preferably in a "well" shaped space C¹at bottom of cistern C, and an
inner tube B with radial arms B₁ soldered or otherwise secured to the outer
tube A.
This inner tube B is open at both ends, the top end being preferably a short
distance down from closed top A' of outer annular tube A so as to communicate
therewith; while its lower end extends past the bottom of outer tube A to fit over
a short guide stand pipe D in lower part of cistern C, and rest on a rubber
washer D' round it at bottom of cistern.
This short stand pipe D has the usual discharge water pipe coupled or connected
to its lower end and it is formed with a series of ports or openings D³ above
washer D at bottom of cistern C, over which the inner tube B bears in its normal
lower position.
The outer annular tube A forms the shorter limb of the syphon and the inner
tube B and its lower pipe connections the longer limb, and when the lower part of
inner tube B is elevated above the ports D' in guide stand pipe D the water passes
through and up the annular space between inner and outer tubes B A and then
down the inner tube B to empty syphon.
The top of outer tube A is formed or fitted with a metal disc A' preferably of
saucer or concave shape, and a socket A' closed at lower end extends from this
down some distance in inner tube B. A vertical central spindle E fits freely
within this guide socket As, and has a rubber or like disc E of flat or cup shape
fitted round it, preferably between a collar and screw washer at E' and this rubber
disc E¹ bears over the saucer shaped top A' of outer tube A, and a weighted loose
metal cover E mounted on spindle E bears over rubber disc E. The upper end
of central spindle E is connected to the usual operating lever c of cistern C, and
when this is actuated by the usual drawing chain or cord c¹ the rubber disc E' by
air suction raises the outer tube A carrying the inner tube B and starts the

page_text: action of the syphon which will then go on discharging until the cistern is
emptied.
A tapered slote or equivalent opening would be fitted from the side of metal
disc A on top of outer tube A to regulate the admission of air between it and
the rubber disc E', so that the time period which the syphon tube B should
be kept raised by the suction disc E. can thus be adjusted.
On the operator letting go the actuating cord c' the rubber disc E, will auto-
matically fall down over the saucer shaped metal disc A¹ of syphon ready for the
next action of discharging the cistern.
Figures 6 and 7 show how the rubber suction disc E' with lower and upper
metal discs A' E' and guide spindle E' and socket A', can be applied at the lower
part of a cistern at the discharge end of the syphon tubes for directly discharging
the volume of water, when the spindle E is actuated by the lever c.
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: :-
First. The construction, or arrangement and combination of the parts of a
syphon discharge apparatus for water closet and other cisterns substantially as
herein described in reference to and shown in the accompanying drawings.
Second. In syphon apparatus for water closet and other cisterns, the forming of
the stand pipe with ports or openings over which an annular movable tube works,
substantially as and in the manner herein described in reference to and shown in
the accompanying drawings.
Third. In syphon discharge apparatus for water closet and other cisterns, the
arrangement and combination of lower metal disc and upper disc cover, with
disc of rubber between these mounted on central spindle working in vertical
socket of lower metal disc, substantially as and for the purposes herein described
in reference to and shown in the accompanying drawings.
Dated the 23rd January 1895.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents..