Improvements in Valves or Cocks.
Year: 1899

page_text: Date of Application, 23rd Dec., 1899-Accepted, 27th Jan., 1900
Improvements in Valves or Cocks.
I, MARIUS LOUIS VICTOR EDOUARD VAÏSSE, of 174, Boulevard Malesherbes, Paris,
in the Republic of France, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
The valve or cock which forms the subject of this invention is characterised by
the form of its plug which comprises a portion in the form of a truncated cone, for
effecting the obturation, and a cylindrical portion which is constantly engaged in
the valve seat in such a manner as to form a passage of annular section between
the said seat and the cylindrical portion.
The plug being interchangeable, the section of the passage may be readily
regulated once for all according to each particular case.
The accompanying drawing represents a vertical section of the improved valve.
a is the seat and B is the plug composed of the part 6 in the shape of a trun-
cated cone and the cylindrical part 6 which is constantly engaged in the valve
seat.
The plug is screwed into a socket e suspended or supported by a collar c on the
The
end of the screw-threaded rod or spindle d serving to operate the plug.
plug B may therefore be readily unscrewed and replaced by another having a
cylindrical portion of a different diameter,. in order to increase or diminish the
annular section between the plug b¹ and the valve.
It should be noticed that the plug is not rigidly attached to the rod or spindle d.
It is screwed into the socket e in such a manner as to leave a certain amount of
play between the socket and the plug on the one hand and the collar c of the rod d
on the other hand.
This method of mounting the plug in a socket which is movable with respect
to the operating rod prevents any wedging of the truncated conical part 6 of the
plug upon the seat, and consequently permits of obtaining hermetic obturation
whatever may be the position of the plug with respect to the seat. It also presents
the advantage of preventing the plug from participating in the rotation of the
screw-threaded rod d and becoming unscrewed during the operation.
Although this method of mounting is very advantageous owing to the results
thereby obtained, I desire to reserve the right to fix the plug to the rod d in any
other manner permitting the said plug to be readily replaced.
It should also be pointed out that as the cylindrical part of the plug is dis-
placed within the seat at each operation, the seat is cleaned automatically with-
out the necessity of dismounting the cock.
The truncated conical portion of the plug by its insertion into the valve seat
opening, permits of obtaining any annular section for the passage of the fluid,
varying from complete obturation to the maximum amount obtained when the
plug is in the position shown in the drawing. The cylindrical portion of the
plug may be replaced by a prism of any desired section, as it is obvious that such
an alteration will in nowise affect the principle upon which my improved cock is
based. The cock may be utilised in conduits for fluids of all kinds.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. A cock or valve provided with an interchangeable plug, the said plug being
composed of a truncated conical portion serving as obturator and of a cylindrical
portion which is constantly engaged in the seat of the valve, for the purpose above
specified.
2. The method of mounting the plug in a movable socket embracing the
extremity of the rod or spindle of the cock, with the object of permitting a certain
amount of play to the plug, with respect to the rod, as above described.
Dated this 23rd day of December 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.