Improvements in Valveless Syphon Water Waste Preventers or Flushing Tanks.
Year: 1893

page_text: Date of Application, 8th Apr., 1893-Accepted, 13th May, 1893
COMPLETE SPECIFICATION.
Improvements in Valveless Syphon Water Waste Preventers or
Flushing Tanks.
I, JOHN FRAMPTON, Builder, of 1 Henslowe Road, Upland Road, East Dulwich,
London S.E. 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 relate to that type of water waste preventer, or flushing tank,
for sanitary or other purposes, where the flow of water is obtained by means of a
syphon, and the starting of said syphon is caused by driving a quantity of water
from the tank over same; also in the employment of a combined service and
overflow, or waste, connection to reduce the number of connections to the tank.
That my invention may
be more readily understood I have caused to be attached
hereto a sheet of drawings, in which
Fig. 1. is a section of a complete apparatus ;
Fig. 2. a method of operating the displacer;
Fig. 3. the regulating screw;
Fig. 4. a modified form of the cylinder and displacer ;
Figs. 5 & 6. types of a combined supply inlet and overflow, or waste, fitting.
Similar letters in the various figures apply to similar parts of the apparatus.
Referring to Fig. 1. which is a typical representation of a water waste preventer,
A is the tank, B a cylinder having an enlarged portion at C, a cup or receptacle
at D, a diaphragm at D', and a syphon E E. The cylinder B is fitted with a
displacer F, which is slightly less in diameter than the cylinder B, and is attached
to a spindle G. The spindle G works through a bush H, and the displacer F may
be provided with buffers of suitable material I. I. which will come in contact with
the diaphragm D', or bush H, at the top of the stroke, and with the inside of the
tapk A, at the bottom of the stroke, if desired. The spindle G is operated by a
chain, wire or cord, L, lever M and "pull" Y; the chain L being guided (if
necessary) by a pulley O, carried on a bracket P, which bracket may also form the
pivot N, for the said lever M. The diaphragm D', is provided with a regulating
screw K (also shown in Fig. 3.) which has a taper portion formed on it, so that by
screwing K up or down, a variation can be made in the size of the passage through
the diaphragm. The same result may be obtained by a pivotted disc, or plate,
working over a hole, and having a taper slot, holes of different sizes or at varying
distances, to give a greater or less area through the diaphragm; or the edge of
said disc, or plate, may be shaped to produce the same effect. A plug with a-
centre, or side channel, and with cross channels communicating with same, said
cross channels working against holes, slots or taper edges, may also be employed.
The syphon E E and cylinder B may be fixed to the tank A by means of snugs
and bolts as at Ex, and supported by a foot, or feet, B³. Instead of the chain L,
lever M and pulley O, I may use any suitable parallel or straight lift motion, with
or without a guide to the rod G, and with or without the intervention of links,
slotted levers &c., of any of the well known forms. In some cases I prefer an
approximate parallel motion as shown at Fig. 2., with levers T pivotted in the
tank A, and a link, or links, U, connecting the ends of said levers, and provided
with a pin to take the spindle G. The ends of the levers T may be carried over
the top of the tank as shown at V, or in any other suitable manner.
A modified form of the cylinder B and its connections is shown at Fig. 4., where
one, two or more, displacers F F are fitted to the spindle G, an outlet B¹ being
formed to allow the water to flow away from above the displacer F', when said
displacer has passed above the edge E', of the syphon E. The space between F & F¹

page_text: (or F and the top of cylinder) may then serve the same purpose as the cup or
receptacle D (Fig. 1). Where one displacer F is used, the necessary water to keep
the syphon sealed may be drawn up through the passage B'. The displacer may
also be formed as a cup, if desired.
The supply inlet to the water waste preventer and the overflow from same, may
be of any well known type, but I prefer the arrangement shown in Fig. 1, where
is the water inlet, or supply, connection to any suitable valve, R the overflow,
warning or waste; pipe connection, and S S the usual lever and ball, pivoted at X,
for operating the said inlet or supply valve. Fig. 5 shows by an enlarged view,
partly in section, how the overflow or waste connection R may be arranged; and
Fig. 6 illustrates a similar fitting with a cup W in connection with the overflow R,
and surrounding the valve Q. The connections to this fitting may be formed into
a bend if desired, and arranged to receive any kind of pipe.
The syphon E may be made to pass through the bottom of the tank A, or in a
recess at the end (as shown) or side, and may be fitted with a serewed end, tail or
flange as desired.
The action of the apparatus is as follows:-The displacer F (Fig. 1) being
raised in the cylinder B (to the position shown) by means of the spindle G, chain L,
lever M and pull Y, the water above said displacer F is forced over the syphon E
and puts said syphon in action. During the syphoning the water from the tank A
passes in at the bottom of the cylinder B, up same, and around the edge of the
displacer F, and so over syphon E E to flushing pipe; the enlarged part of the
cylinder C being suitably arranged to give a sufficient passage around the edge of
said displacer F. The syphoning action continues until air passes in around the
spindle G, or through the regulator K, or the water in the tank falls below the
lower edge of the cylinder B, as will be readily understood. During the syphoning
water will be drawn in around the spindle G, and through the regulator K from
the cup or receptacle D, by the suction of the syphon, and so prevents the syphonage
being destroyed by air passing in there, until the cup D is empty. To enable some
control to be exercised over the emptying of the cup or receptacle D, the admission
of air to the cylinder B, and the action of the syphon, and to effectually counteract
the result of the wear of the spindle G and bush H, the regulator K is provided.
So soon as the syphouage is broken by the admission of air at the lower edge of
the cylinder B, around G or through regulator K, the displacer will fall ready for
the next "pull." If the displacer F be not heavy enough, a weight can be added
to the spindle G, chain L or lever M. After the fall of said displacer F sufficient
air will be admitted around the spindle G, or the aperture in regulator K, to
completely break the syphonage, and so prevent said syphonage continuing as the
water runs in from the supply valve Q; but so soon as the water level rises in the
tank high enough to fill the cup or receptacle D, the syphon can be put into
action again by raising the displacer F, but not before.
I can
The cup or receptacle D can be of any convenient form, or size, and may be
covered in and provided with a suitable filling hole; but I preferably arrange the
capacity of the said cup D, so that it shall be empty just previously to the water
line in the tank A falling below the lower edge of the cylinder B, thus breaking
the syphonage above the displacer F, and producing a noiseless action.
however so modify the capacity of the cup D, or the time of admission of air
through the regulator K, or around the spindle G, as to allow of a varying flush.
In some cases the space between the displacer F and cylinder B may be large
enough to dispense with the necessity for the enlarged part C, of said cylinder.
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 water waste preventers the cylinder B; with (or without) the enlarged
portion C, diaphragm D', cup or receptacle D, displacer F with its connections, and
the syphon E E, for the purposes herein described with reference to Fig. 1.

page_text: 2. In water waste preventers a regulator (as K) for the purposes herein
described.
3. In water waste preventers the chain, wire or cord L, and pulley O, for the
purposes herein described with reference to Fig. 1.
4. In water waste preventers an approximate parallel motion, obtained by the
levers T, T, and link (or links) U, or their equivalents, for the purposes herein
described with reference to Fig. 2.
5. In water waste preventers a cylinder B, with outlet B¹, syphon E E, and one,
two or more displacers, F, F', for the purposes berein described with reference to
Fig. 4.
6. In water waste preventers a combined inlet and waste fitting for the purposes
herein described with reference to Figs. 1, 5 & 6.
Dated this Seventh dow of Anuil 1902
G. T. HARRAP,
Agent for Applicant.