Improvements in Stuffing Box and like Packings.
Year: 1892

page_text: Date of Application, 16th Apr., 1892
Complete Specification Left, 6th Jan., 1893-Accepted, 25th Feb., 1393
PROVISIONAL SPECIFICATION.
Improvements in Stuffing Box and like Packings.
I JOHN RUSSELL GREEN of 63 Cromford Road Wandsworth in the County
of Surrey Marine Engineer do hereby declare the nature of this invention to be
as follows:-
:-
My invention is for an improved packing composed of asbestos cloth or other
suitable textile fabric with a strip or strips of soft metal of a triangular form
running through it.
I am aware that metal of a triangular shape has been used in combination with
asbestos cloth and other fabrics to form a packing for piston rods and other jointing,
but hitherto the apex has been placed so as to face the piston rod or other working
surface. In my improved packing the triangular piece of metal is so placed that
its base instead of its apex is brought to bear on the piston rod or other working
surface and in order to allow the metal to readily accommodate itself to the
required radius I extend the base by adding thereto a flange on either side. In
some cases the base of the triangular piece of metal is made with a groove which
serves as a reservoir for lubricant. When the packing so formed as described is
compressed by the screwing up of the gland the asbestos cloth or other fabric bears
on the two sides of the triangular piece of metal and thereby forces its base against
the piston rod or other working surface. In some cases I make the strip or strips
of metal in the form of a D instead of a triangle.
Dated this 14th day of April 1892.
JOHN RUSSELL GREEN.
COMPLETE SPECIFICATION.
Improvements in Stuffing Box and like Packings.
I JOHN RUSSELL GREEN of 63 Cromford Road Wandsworth in the County
of Surrey 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 :-
My invention is for an improved packing composed of layers of asbestos cloth or
other suitable textile fabric with a strip or strips of soft metal of a triangular form
(as shewn in drawing Figures 1 2 3 and 4 and marked A) running through it.
The triangular piece of metal is so placed that its base is brought to bear on the
working surface, and in order to allow the metal to readily accommodate itself to
the required radius I extend the base of the triangle by adding thereto a flange on
either side (as shown in Figures 1 2 3 and 4 and marked A). In some cases the
triangular piece of metal is made with a groove to serve as a reservoir for a
lubricant. Instead of the strip of metal being of a triangular form with extended
base it may be made in the form of a D with extended base. When the packing
so formed as described is compressed by the screwing up of the gland, the asbestos
cloth or other fabric bears on the two sides of the triangle and thereby forces its
base against the working surface.
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 :-
The insertion longitudinally in asbestos cloth or other fibrous material of a strip

page_text: or strips of metal of a triangular form with extended base on either side (or in the
form of a D with extended base) as heretofore described and as shown in
.drawing.
Dated thin 14h d- of Tan1002
JOHN RUSSELL GREEN.