Improvements in COCKS.
Year: 1895

page_text: Improvements in COCKS.
I, REGINALD HADDAN of the Firm of Herbert Haddan & Co. Patent Agents of
18 Buckingham Street, Strand, W.C. London, Civil Engineer do hereby declare the
nature of this invention, a communication to me from abroad by Edmond Draullette
of Paris in the Republic of France to be as follows:-
:-
This invention relates to cocks for controlling the flow of liquids and principally to
water taps.
In this improved cock, closure is effected by means of an elastic hollow body of the
form of a sack or bag firmly secured at its mouth so that the water or other liquid
cannot pass into its interior but so that a rod secured by screwing or otherwise in a
hard block fitting into the end of the bag may pass freely in the mouth of the bag.
This rod is controlled by an eccentric and exterior hand lever so that by manipulation
of this lever in either direction the rod is raised, the lower end of the bag lifted from
its seat, and the cock is thus opened. A return of the lever to its first position
expands the bag and brings it upon the seat closing the cock.
By this means no liquid can reach the rod or excentric, and the cock cannot be
closed with excessive pressure since the rod is moved by the excentric and cannot
therefore be forced further than the maximum excentricity of the latter will allow.
A spiral spring or the like may also be employed in order to cushion the parts and
prevent too sudden closure.
To equalize the current of cutflowing liquid a spiral or helical coil of wire may be
inserted in the delivery part of the passage way of the cock to break up the current
of liquid.
In place of lifting the elastic plug from its seat as before described, it may be
moved to or from its seat by a twisting movement of its interior rod or stem moved
by appropriate mechanism.
Dated this 12th day of September 1895.
HERBERT HADDAN & Co.,
Agents to Applicant.
Improvements in Cocks.
I, REGINALD HADDAN, of the Firm of Herbert Haddan and Co., Patent Agents,
of 18 Buckingham Street, Strand, London W.C. Civil Engineer, do hereby declare
the nature of this invention, a communication to me from abroad by Edmond
Draullette, of Paris in the Republic of France, and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
In all cocks in use up to the present day the liquid is in direct contact with the
devices which control its flow (spigot, piston, etc.) which causes such devices to be
easily deteriorated and leads rapidly to wear of the joints and seats.
To avoid these inconveniences i have devised a cock of which the parts which
control the flow of liquid are completely isolated from the liquid

page_text: The improved cock also has the following advantages.
The handle may be moved indifferently to right or left, the liquid will run out
regularly and without dispersing, the back throw is greatly diminished and the wear
is thus almost reduced to nothing.
The improved cock is shown in the annexed drawing in which :-
Fig.
Fig. 2 elevation and section as seen from the back (in open position).
Fig. 3 sectional view and plan of a modification of the closing valve.
Fig. 4 represents a regulator of the flow of liquid.
is a vertical and axial section (in closed position).
The cock is composed essentially of a body A divided into two parts by a flange B
forming a seat for the valve F which consists of a sleeve or bag surrounding and
enclosing the rod G moved by the eccentric I. The body A and the hand-lever are
set in a chamber N which may be of any ornamental design.
The annular space of the upper part of the body A is occupied in part by a
valve F made of elastic material (such as caoutchouc) which is formed exteriorly and
interiorly with spirals, ribs or rings permitting it to be flattened or compressed.
lengthwise.
The valve F has at its upper edge a circular flange a intended to make a joint
between the body A and cap K and at its lower end it contains a block c of hard
material (ebonite or metal) in which is screwed or otherwise fixed the extremity of
rod G.
The rod G elbowed at its upper end is threaded on an eccentric I on the shaft of
the hand-lever H so that when the handle H is moved and in consequence the
eccentric turned, the rod G is drawn up or pressed down, and the valve-bag F com-
pressed or extended.
The valve when compressed (Fig. 2) leaves its seat and opens passage between D
and C for the liquid, which in passing meets the spirals of the helical conical
spring J which is retained by the cross-pin e in the lower end of the body A. This
spring has the effect of breaking up the jet of liquid and equalizing its outflow.
As above said the flange a on the valve F is compressed between the edge of the
body A and the cap plate K. This is effected by two screws, L L, Fig. 2.
To lessen the back throw produced if the cock is closed too quickly, there is
placed on the cap K and around the rod G a helical spring M of which the resisting
force equalizes the force of extension of the elastic valve F. This prevents the latter
from rapidly moving on to its seat whenever, on closing the cock, the eccentric I
passes its dead point. Moreover the elasticity of the valve F is also a factor
favourable to the reduction of the back-throw.
Wear is reduced in the controlling parts by the adoption of the action of an
eccentric combined with a rod, and in the part more immediately serving for closing
the cock, by the fact that the valve comes direct on to its seat and cannot be crushed
thereon since its movement is limited by the throw of the eccentric which it cannot
surpass.
The cock as shown may be ornamented as in
appropriate to its destination (such as a human
monster, etc.)
Fig. 1 by a shield N of design
head, lion's head, elephant's head,
As shown in Fig. 3, the mode of compression of the valve F in place of being
obtained by a longitudinal traction can be had by a torsional movement which
removes a plane surface o from the orifice of the spout P and permits of progressive
outflow of the liquid.
In this variation the lower extremity of the piston-rod G will terminate in a
square G¹ inserted in the block of hard material c which forms a single operative
body with the valve F.
Several other variations can be obtained by utilizing the elasticity of the valve,
modifying its form and structure, while preserving the fundamental principle which
consists in isolating, by surrounding them, the parts which control the passage for
the liquid.
Lastly, in place of spring J, I may use a brush-like device of metal or other

page_text: material as shown in Fig. 4 having the same effect and advantages as the said spring.
Such device or the spring may also be placed at the entrance to the cock, in the
sleeve D.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A novel cock having its controlling devices isolated from the liquid, adapted to be
opened and closed in either direction, and having:
1. The combination of a rod with an elastic valve forming a spring permitting the
passage of liquid or matter while hermetically covering the operative parts,
this rod being seated at its lower extremity at the base of and in the body of
the valve.
2. The combination of the said rod with a hand lever with eccentric governing
the opening or closing indifferently to the right or left, the movement being
equalized by an antagonistic spring.
3. A helical spring or similar device of wire or the like placed in the entrance
or outlet of a cock in such a manner as to break up the jet of liquid and
equalize its flow.
The whole substantially as described and illustrated in the annexed drawings.
Dated this 1st day of June 1896
R. HADDAN.