Improvements in or relating to Cocks or Valves.
Year: 1896

page_text: Date of Application, 8th Jan., 1896-Accepted, 13th June, 1896
Improvements in or relating to Cocks or Valves.
1, EUZEBIO ZUBIETA Y GUILISASTI of Calle Sierra, Bilbao, Spain, Engineer,
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:-
The present invention relates to a cock for water-pipes, which is characterised
by the water flowing out of it in an intermittent stream as long as a closing lever
is being operated. The cock therefore enables the water to be drawn in an
extremely economical manner.
The accompanying drawings illustrate the invention.
Figure 1 shows the cock in longitudinal section and closed.
Figure 2 shows the same when open.
Figure 3 shows a modification.
The construction is as follows:-
In a cylinder 6 placed on to a water pipe there is provided a float c. The cover d
of the cylinder bhas in its lower part an opening e in which is loosely guided a
valve fin the cylinder. The upper part of the cover d is formed into a sleeve
the inner opening of which is reduced at h and receives the elastic closing ball i.
This latter is fixed to a rod k, which is guided in the upper part 1 and can be moved
by the lever m.
The mode of working of this cock is as follows:-The float c, the lower end of
which is open, is filled up to the dotted line (Figure 1) with water, the remaining
part being filled with compressed air. The water fills the cylinder b and also the
inside of the upper part g of the cover. The valve is pressed against the cover
by the float c being pressed upward, so that it closes the opening e. The ball i
closes the reduced neck at h. If the ball is pressed downwards by means of the
lever, then a pressure is produced on the water, contained in the neck g of the
cover. This pressure is transmitted and influences the valvef that is to say, it will
be pressed down together with the float c. The water forced out penetrates into
the interior of the float and compresses the air contained therein still more.
Meanwhile the ball i as it has been moved further down, has opened the entrance
of the neck, so that the compressed air contained in the float can again expand and
the water coming out through the pipe a, will be forced out of the cylinder b and
through the neck h into the spout 1.
Figure 2 represents the apparatus at the moment when the valve f and the
float c are influenced and the valve opens the passage to the water. When the air
in the float has again expanded to its old volume, then the float has already moved
so far upwards, that it presses the valve f against the cover and shuts off the
interior of the cylinder from communication with the outside. It is therefore
necessary to bring the lever m to its original position, that is to say to squeeze the
ball in the opening of the neck, in order to be able to press it afterwards into the
interior of the neck. This play is repeated, till the desired quantity of water is
obtained.
Figure 3 is a modified construction of such a cock, the difference being, that
the float consists of several cylinders nested in each other and the upper part of
the outer cylinder is provided with stops o so that the whole load does not come
on the valve f. This latter differs from the valve in Figures 1 and 2 by having its
lower plate slotted radially and bent helically similar to a "propeller," so that it
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page_text: may be rotated by the fluid during its opening and shutting, and assume a fresh
position every time it seats itself, whereby valve and seat maintain a good joint.
The interior of the neck is divided by the diaphragm s into two chambers r and t,
a rubber packing a being placed in the latter. There is besides, in the chamber a
movable heady, serving as a valve cone, of the valve spindle. The part A of
the valve spindle is stepped down and reduced at the top, so that this part A
brings the interior of the chamber t in communication with the spout chamber m
as soon as the valve spindle is pressed into the interior of the cock.
This apparatus works as follows:-
When the valve spindle is suddenly pressed into the interior of the tap, then
the water is forced out of the chamber t into the chamber in consequence of the
valve y which moves freely in the chamber and acts as a piston, being pushed
down till it rests against the rubber packing a. The water-pressure is felt on the
valve and brings it in the position shown on the drawing, so that water from the
chamber enters the interior of the cylinder and compresses the air contained in
the float, that is to say the float will be quickly pushed downwards the parts
passing into each other. When the valve spindle z is released, then the air
contained in the float expands, forces the water out of the cylinder, and in con-
sequence of the part A of the valve spindle being conical and not quite filling
the opening, in which it moves, the water, forced from the cylinder will be
allowed to escape, fresh water of course coming in in the cylinder. The spout m
consists of two chambers, the upper one serving for the same purpose as the
packing.
In the connecting piece a of the water pipe there is placed a disc with a bigger
or smaller hole, according to the quantity of water to be drawn. The tap is to be
used especially in cases, when it is of importance to be economical with water, as
when this tap is used, even if it is left open, the water cannot escape through it.
If it is desired to have a continuously acting tap, then the valve f and the float c
are removed.
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. The combination with a cock or valve of a floating valve such as with or
without a "propeller" substantially as and for the purpose described and illustrated
in the accompanying drawings.
2. A cock or valve operating substantially as described and illustrated with
reference to Figures 1 and 2 or Figure 3 of the accompanying drawings.
3. The combination with a cock or valve of a floating cylinder such as c sub-
stantially as and for the purpose described and illustrated in the accompanying
drawings.
4. The combination and arrangement of parts constituting the complete cock or
valve substantially as and for the purpose described and illustrated in the
accompanying drawings.
Dated this 8th day of January 1896.
BOULT & WADE,
Agents for the Applicant.