An Improved Water Waste Preventing Valve.
Year: 1890

page_text: COMPLETE SPECIFICATION.
An Improved Water Waste Preventing Valve.
I, HERMANN GOODSON, of No. 140 Kurfürsten Strasse, Berlin, Germany, Engineer,
do hereby declare the nature of my said 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 the construction of a water waste preventing valve or tap in
which a second or auxiliary free moving valve is applied in connection with the stop
valve operated by hand, so that when a predetermined quantity of water has been
allowed to flow from the tap or valve the auxiliary valve will shut off the water supply,
even when the main valve remains open, in order to prevent loss of water through wilful
neglect or carelessness.
In the accompanying drawings Figures 1 to 12 represent my water waste preventing
valve in vertical longitudinal section in several modifications. The water flowing from
the service pipe in the direction of the arrow a, (Figure 1), into the valve casing flows,
when the valve c is opened, through the seat d of a valvo e arranged at the lower end
of the smaller part of a differential piston f, and from thence through the central
boring of a third valve g and tap or outlet h.
The movable valve g, which, when the main valve is pressed on to its seat i by the
valve c so as to close the openings to two channels or ways k, l, will be simultaneously
pressed from its seat by the water flowing through the way 1, whereupon the water in
the service will play around the projecting hollow cylinder m of the valve g, flows
from thence through the channel or way into the large cylinder n of the differential
piston f,f', presses on the larger surface of the said piston and gradually forces the
same down until the valve e comes on to its seat d, thus preventing all further passage
of water.
A further quantity of water can only be obtained by first closing the valve c. (shown
open in all the Figures), in order to effect which the stem o should be turned until the
valve comes on to its seat pin the valve y, then turning the stem further and pressing
the valve on to its seat i, so that the connection between the ways and is simul-
taneously cut off.
In consequence of the fine boring 9 of the valve g, which is arranged opposite to the
orifice of the way or channel k an equalisation of the pressure is attained between
the cylinder n and the atmosphere, so that the water in the service will gradually press
the differential piston f, f', upwards, whereby the water contained in the cylinder, n
will flow off through the way k and the valve boring 9. The rapidity of the movement of
the differential piston can be regulated by the screw by means of which the way k
can be more or less closed.
A boring s at the lower end of the cylinder n allows any water which may escape
through the leakage of the piston f, f, to flow off. The water waste preventing valve
represented in Figure 2 differs only little in the constructive parts from that shown
by Figure 1.
According to Figure 3 the upper piston f1 (Fig. 1,) is replaced by a strong elastic
membrane t and in the modification represented in Figure 41 insert an elastic disc u
provided with a fine boring between the seat and the valve g, and besides this the
adjusting screw is cut so weak that the water under pressure can flow around the
same into the channel or way k and from thence above the piston f.
is con-
A small notch y in the valve seat i allows the water to escape from the cylinder,
even if the valve g is closed. The relief boring s is made in the form of a canal or
channel running into the outlet or tap h. According to Figure 5 the valve
structed as a massive cylinder arranged in a hollow cylinder communicating with
the ways l, k, and around which the water flows, as represented by the arrows.
The

page_text: .
piston, is provided with a channel or way w, which connects the cylindrical space
above the larger piston 1 with the space forined by the distance the two pistons f
are adjusted apart. By means of a weak cut screw in the channel or way to the flow
of the water out of the cylinder n can be accurately adjusted.
In Figures 6 and 7 the valves 9, which are of somewhat varying form, are also
provided with elastic packing, but instead of the notch y, Figure 4, near the valve
seat a special outlet is used. The water from the cylinder flows into the outlet by
trickling around the periphery of the valve g which, in closed condition, will allow the
same to pass.
In Figure S the valve is formed by an elastic annular disc of india rubber or other
appropriate material fixed at the outer and inner edges by means of screws or in other
suitable manner.
Figure 9 represents an ordinary delivery cock with automatic cut off. The two
pistons are separated by a partition through which the rod a¹ connecting the said two
pistons runs watertight. The piston 2 has considerable leakage or is provided with
grooves b¹, Fig. 10. When the cock is closed both pistons f, are depressed by the
water flowing through the canal or way c¹ into the cylinder d'.
When the valve e¹
has been opened the water flowing in through the cylinder g' and the grooves b₁ of
the piston will lift the two pistons until the upper surface of the piston flies.
against the seat, thus preventing the further flow of water. During the upward
movement of the pistons f, f³ the water in the cylinder d' is also forced through the
ways c, k into the outlet 1. As soon as the valve e¹ is again screwed down or closed
both pistons are again depressed.
The construction represented in Figure 11 is provided with a valve m² operated by
hand which in addition to the main water way o' also opens and closes the channel or
way ?, which serves to effect the rising and falling of the disc piston n¹.
When the valve is closed the piston is at the lower end of its cylinder 9', if, however,
the same is opened the water will flow through the way p¹ and lift the piston until the
upper surface lies against the seat s¹, when the water will be cut off. The valve
being now closed the sinking piston n¹ will, by its own weight or by means of spring
pressure force the water out of the cylinder q' through the channel or way p₁ and
through a fine boring & into the outlet u'.
According to Figure 12 the valve is formed by a hollow cylinder closed at one end
and provided with a lateral opening 1, whilst the closed end w¹ shuts off the way
when the valve is closed. When the valve is opened the water flowing in through the
way I will press the valve g so far back that the channel or way k becomes free and
the water can flow through the same into the cylinder n and thus operate the differ-
ential pistons, as aforedescribed. The valve g is prevented from making an
excessive longitudinal movement by means of a suitable screw a¹. In order to prevent
the dripping of the channel or way s, Figure 8, or openings q, Figure 4, when the
valve cis open but the valve e is closed, Figs. 4 and 8, the way s and opening q can
be so arranged in the packing of the membrane that they will, in consequence of the
alteration in form of the said membrane u or q, Figs. 4 and 8, under the internal
- pressure of the water, be so pressed against smooth parts a² of the valve g, Fig. 4, or
valve casing Fig. 8, that they will be entirely cut off. The like object is attained in
Figure 5 by means of a channel or way 62 which runs in inclined direction through
the valves and c.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is
1-A water waste preventing valve provided with a second or auxiliary valve e
for automatically cutting off the delivery as soon as a certain predetermined quantity
of water has been drawn from the service, said valve being arranged on the face of the
smaller part of a differential piston f', which, when the outlet valve c is closed, will
..be lifted from its seat d by the pressure in the service pipes but after opening the outlet
valve c will be pressed in the opposite direction on to its seat by the water flowing

page_text: through the channels or ways l, k, the cross section of which can be adjusted by means
of adjusting screws, substantially as set forth and shown.
2 In water waste preventing valves, the arrangement and application of an
auxiliary valve g, which, when the main outlet valve c is closed, will be so pressed on
to its seat i that the connecting channels or ways k and are closed so as to prevent
fluid from flowing into the cylinder n and above the large differential piston,
but when the outlet valve c is opened, will be moved from its seat and thereby
the connecting channels or ways 1, k, opened, substantially as specified and
shown.
3: The modified construction according to which one of the two parts of the
differential piston is made in the form of a membrane t, Fig. 3, substantially
as set forth and shown.
•
4 The construction of water waste preventing valves in which that part of the
piston exposed to the water pressure in the service leaks or is provided with
grooves or openings for the passage of the water so as to allow the same to act
alternately on the one or the other inner surface of the piston, whereby both
parts ff, of the piston are separated by a partition through which the stem a³,
which connects the two pistons runs, Figs. 9 and 10, substantially as set forth
and shown.
5 In water waste preventing valves, automatically closing the water way by
means of a disc piston w arranged behind the main valve m¹ which simultaneously
causes the opening and closing of the channel or way p' Fig. 11, for operating the
piston, substantially as and for the purpose set forth and shown.
6: In the valves g which open or close the ways 1, k, for automatically
operating the valves e, the application of special packing which is either in the form
of a sleeve, Figs. 6 and 7, or a membrane, Fig. 8, substantially as and for the purpose
set forth and shown.
7: The construction of the valves y either as massive cylinders and of one piece
with the main valve c, (Fig. 5), or as hollow cylinders with lateral openings, (Fig. 12),
substantially as specified and shown.
8: My improved water waste preventing valve or tap, substantially as and for the
purpose set forth in the foregoing specification, and illustrated in Figures 1 to 12 of
the accompanying drawings.
Dated this 31st day of May 1890.
ALLISON BROS.,
Agents for the Applicant.