Year: 1886

page_text: Date of Application, 20th Sept., 1886.
Complete Left, 16th June, 1887.
Complete Accepted, 19th July, 1887.
We, FERNAND MAREY and EDOUARD COLLE both of Paris in the Republic of France,
Engineers do hereby declare the nature of this invention to be as follows:-
This invention relates to the construction of a stop cock for water or other liquid in
such a manner that, the movement for opening and closing it being communicated
through an impervious flexible diaphragm, there is no risk of leakage where the
moving part passes through the shell. The stop cock is also arranged so that unless
it is held open it closes itself automatically, and the passage for liquid is so formed as
to avoid the dangerous ram-like action that takes place on sudden stoppage of the
flow. For this purpose, within a casing between the inflow and the outflow passages,
there is a horizontal seating for a valve, the stem of which bears against a flexible
diaphragm below. Under this diaphragm there is a guided stem which can be raised
bulging the diaphragm upwards and opening the valve, or which, when let go,
descends, the valve closing itself in obedience to the pressure on its upper side, which
may be aided by a spring. As the movement of the guided stem is communicated to
the valve through the impervious diaphragm, there is no leakage as there might be if
the stem passed directly through the casing. Above the valve the passage is narrowed
so as to prevent ram-like action of the liquid on sudden stoppage of the flow. The
guided stem may be raised directly by hand or by a lever or otherwise, but it is
preferred to raise it by turning partly round an eccentric on which the stem bears.
When it is desired that the cock shall remain open even when the handle that turns
the eccentric is let go, a ratchet wheel or segment is fixed on the axis of the eccentric
and a pawl is allowed to drop into engagement with the ratchet so as to prevent the
eccentric from turning back unless the pawl is disengaged. The diaphragm may be
of caoutchouc, leather, or such like elastic or flexible material, or it may be of thin
metal plate annularly corrugated to give it flexibility.
Dated this 20th day of September 1886.
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicants.

page_text: We FERNAND MAREY and EDOUARD COLLE both of Paris in the Republic of
France, Engineers 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 :-
This invention relates to the construction of a stop cock for water or other liquid in
such a manner that, the movement for opening or closing it being communicated
through an impervious flexible diaphragm, there is no risk of leakage where the
moving part passes through the shell. The stop cock is also arranged so that unless
it is held open it closes itself automatically, and the passage for liquid is so formed as
to aviod the dangerous ram-like action that takes place on sudden stoppage of the
flow. For this purpose the stop cock is constructed as shewn in the vertical sections
Fig. 1 with the valve closed and in Fig. 2 with the valve open. Within a casing
between the inflow passage A and the outflow passage B there is a horizontal
seating C for a valve D, the grooved stem of which bears against a flexible diaphragm G
fixed by a screwed cap F below.
Under this diaphragm G there is a guided stem J which can be raised bulging the
diaphragm upwards and opening the valve, or which when let go, descends, the valve
closing itself in obedience to the pressure on its upper side. As the movement of the
guided stem J is communicated to the valve D through the impervious diaphragm G
there is no leakage as there might be if the stem passed directly through the casing.
Above the valve there is space under the screwed cap E which prevents ram-like
action of the liquid on sudden stoppage of the flow. The guided stem J may be raised
directly by hand or by a lever or otherwise, but it is preferred to raise it by turning
partly round an eccentric K on which the stem J bears. This eccentric is fixed on an
axis I that can be turned by a handle in bearings formed in ears H projecting down
from the cap F. The diaphragm G may be of caoutchouc, leather or such like elastic
or flexible material, or it may be of thin metal plate annularly corrugated to give it
flexibility.
Having now particularly described and ascertained the nature of our said Invention
and in what manner the same is to be performed we declare that what we claim is:
A self closing stop cock having a valve seated by the liquid pressure on it and
under its stem a flexible diaphragm that can be raised by an eccentric to open the
valve, and having above the valve a space to prevent ram like action when the valve
is suddenly closed, substantially as described with reference to the accompanying
drawings.
Dated this 16th day of Inno 1887
ABEL & IMRAY,
Agents for the Applicants.