Improvements in Cocks or Valves.
Year: 1895

page_text: Date of Application, 15th June, 1895
Complete Specification Left, 14th Mar., 1896-Accepted, 18th Apr,
1896
Improvements in Cocks or Valves.
I, BENJAMIN JOSEPH BARNARD MILLS, of 23 Southampton Buildings, in the
County of London, Patent Agent, do hereby declare the nature of this invention
(a communication to me from Messrs. Thevenin Frères & Cie., of 3 Rue Dunoir,
Lyons, in the Republic of France, Copper Founders) to be as follows:-
The essential feature of the cock or valve forming the subject of the present
invention is that it is furnished with a double closing means on a single seat divided
into two concentric zones; the closing is effected in the usual manner by the
pressure of a screw, it is then completed and rendered hermetic by the pressure of
the vapor, gas or fluid to be retained by virtue of a different extent of surface. and
although this pressure acts in contrary direction to the closing.
The invention is represented in the accompanying drawing, in which
Fig. 1 is a vertical axial section of the cock or valve and
Fig. 2 is a plan of the valve separately.
The cock or valve as a whole has the appearance of an ordinary screw down
cock or valve, but it differs essentially therefrom in the closing means.
The bronze seat A is screwed into the casting, its surface is in a plaue and
divided into two concentric zones by a circular groove. The valve B is hollow, it
is in the form of a reversed cup carrying an internal flat and relatively thin flange
whose free part in the form of a membrane is pressed on the interior zone of the
seat whilst the rigid part is pressed on the exterior zone.
When the valve is screwed down it comes into contact with the seat and
immediately the pressure exerting itself on the interior of the cup, acts on the
membrane and presses it on to the interior zone, thus forming a second and perfectly
tight closure even against very great pressures. This result is obtained without
effort, the screw having absolutely only to bring the valve in contact with the seat
without forcing it to it as in cocks or valves hitherto in use. The opening is
consequently rendered easier, the screw never becoming wedged into its nut or by
its other frictions.
The valve is guided at its upper part by four T shaped wings C fitted in the
circular chamber D; the valve itself when it is raised is located in this chamber
where it is sheltered from the current of steam, gas or fluid, and from vibrations
which rapidly deteriorate the ordinary guides and wings. It further leaves the
passage for the steam, gas or fluid perfectly free.
The forms and arrangements of detail may be varied without departing from the
peculiar character of the invention.
Dated thin 15th J. of T 1905
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.

page_text: improvements in Cocks or Valves.
I, BENJAMIN JOSEPH BARNARD MILLS, of 23 Southampton Buildings, in the
County of London, Patent Agent, do hereby declare the nature of this invention,
(a communication to me from Messieurs Thévenin Frères & Cie., of 3 Rue Dunoir,
Lyons, in the Republic of France, Copper Founders,) and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The essential feature of the cock or valve forming the subject of the present
-invention-is-that-it-is-furnished with a double closing means on a single seat divided
into two concentric zones; the closing is effected in the usual manuer by the
pressure of a screw, it is then completed and rendered hermetic by the pressure
of the vapor, gas or fluid to be retained by virtue of a different extent of surface,
although this pressure acts in contrary direction to the closing.
The invention is represented in the drawings accompanying my Provisional
Specification, in which :-
Fig. 1 is a vertical axial section of the cock or valve, and
Fig. 2 is a plan of the valve separately.
The cock or valve as a whole has the appearance of an ordinary screw down
cock or valve, but it differs essentially therefrom in the closing means.
The bronze seat A is screwed into the casting, its surface is in a plane and
divided into two concentric zones by a circular groove.
The valve B is hollow, it
is in the form of a reversed cup carrying an internal flat and relatively thin flange,
whose free part in the form of a membrane is pressed on the interior zone of the
seat, whilst the rigid part is pressed on the exterior zone.
When the valve is screwed down, it comes into contact with the seat aud
immediately, the pressure exerting itself in the interior of the cup, acts on the
membrane and presses it on to the interior zone, thus forming a second and perfectly
tight closure, even against very great pressures.
This result is obtained without
effort, the screw having àbsolutely only to bring the valve in contact with the seat,
without forcing it to it as in cocks or valves hitherto in use. The opening is
consequently rendered easier, the screw never becoming wedged into its nut or by
its other frictions.
The valve is guided at its upper part by four Ṭ shaped wings C fitted in the
circular chamber D; the valve itself, when it is raised, is located in this chamber,
where it is sheltered from the current of steam, gas or fluid and from vibrations
which rapidly deteriorate the ordinary guides and wings. It further leaves the
passage for the steam, gas or fluid perfectly free.
The forms and arrangements of detail may be varied without departing from the
peculiar character of the invention.
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. A valve having an internal thin flange forming a membrane adapted to a flat
or slightly conical seat for the purpose of obtaining hermetic closure which is
commenced by the ordinary means and is then completed by the pressure of the
fluid upon the free part of the membrane, substantially as herein shown and
described.
2. The herein described guiding arrangement whereby the valve is secured against
vibrations whilst the passage is left free for the fluid under pressure.

page_text: 3. The improved construction of cock or valve substantially as herein shown and
described.
Dated this 14th day of March 1896.
HARRIS & MILLS,
23 Southampton Buildings, London, W.C., Agents.