Year: 1896

page_text: The following clerical errors in the original Specification having been
amended by the Patentee with the consent of the Comptroller, the printed
Specification will now read as shown below:-
Page 2, line 7 for "we do dispense" read I dispense.
Page 2, lines 14-15 for "we declare that what we claim" read I
declare that what I claim.

page_text: Date of Application, 12th Nov., 1895-Accepted, 30th Jan., 1897
COMPLETE SPECIFICATION.
Improvements in Metallic Packing for Stuffing Boxes and
the like.
I, GEORGE COOPER, of Graveleythorpe, Halton, Leeds, in the County of
York, Assistant 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 :-
This invention has reference to an improved construction of metallic packing for
stuffing boxes and the like of the kind in which there are used in conjunction with
an internally flanged gland and a washer or end ring within the stuffing box, a
main sleeve, soft metal packing rings resembling frustums of cones with cylindrical
base portions arranged base to base and having through them holes to contain the
rod to be packed, other rings for keeping the soft metal ones in position, and a
spiral spring which tends to force certain of the rings into close contact with
the rod.
According to this invention a metallic packing of the kind referred to is so
constructed as hereinafter described and represented in the accompanying illustrative
drawing which shows partly in section, partly in elevation, a stuffing box with
portion of rod and packing embodying the present improvements.
A is the stuffing box constructed at its inner end with a flange or fillet B having
an annular flat surface within the box. C is the gland constructed with a flange
or fillet D whose inner surface is of a form corresponding to an annular portion of
a sphere. E is the main sleeve constructed with a flange or fillet and the surface
of whose outer end is an annular portion of a sphere accurately fitting the inner
surface of the flange D, of the gland. F is an outer ring of a section approxi-
mately shaped but with its inner annular face inclined so that it corresponds to
an annular portion of an inverted cone. A portion of the outer part of this ring
bears against the inner annular surface of the flange of the main sleeve.
G G and
GG are two pairs of soft metal packing rings, each of these rings is partly
cylindrical and partly conical and they are arranged base to base and so that they
fit accurately around the rod H to be packed. I is a ring intermediate between
the pair of soft metal packing rings G G and the pair G G and is of wedged
shaped cross section so that its annular inverted conical surfaces fit the annular
conical surfaces of the soft metal rings G G', that are in juxtaposition to it.
K is a flanged inner ring; it is of approximately shape in cross section but
with inclined outer face constituting an inverted annular conical face that fits the
surface of the soft metal packing ring G juxtaposed to it.
As will be seen the outer ring, inner ring, soft metal rings and intermediate ring
are all enclosed within the main sleeve.
M is the end ring approximately shaped in cross section and having at its
inner side a flat annular surface that bears against the juxtaposed flat annular
surface of the flange B of the stuffing box N is a spiral spring compressed
between and bearing at its ends against the inner ring K and the end ring M.
The main sleeve is of brass, the outer, intermediate, inner and end rings may be
of gun metal or brass, the ring G G and G' G' are of white metal. The number.
of pairs of soft metal rings and intermediate rings may be varied.
The above improved construction of metallic packing can be easily fitted, and

page_text: one set only being required it will be especially applicable in cases where the
stuffing box is short in length and small in diameter; it will be self-adjusting as
will be evident from the construction and arrangement of the white metal packing
rings which bear against the rod. Should wet steam or water find its way into the
box the packing and spring will not be liable to break, as is the case with packings
now in general use.
In a modification we do dispense with the end ring M and allow the spring N to
bear direct on the flange B of the stuffing box.
The number of pairs of soft metal rings employed will depend on requirement,
two pairs, as illustrated, being usually convenient. When the rod to be packed
bas enlarged ends the rings that are to fit the rod must of course be split or made
in parts.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The improved metallic packing hereinabove described and illustrated
comprising the main sleeve having its outer end formed as a portion of a sphere
bearing against a correspondingly formed surface such as that of the gland; the
outer ring within the said sleeve, the soft metal partly conical rings, the ring (or
rings) of wedged shape section between the pairs of soft metal rings, the inner ring,
the end ring with flat face bearing against a corresponding annular face such as
that of the inner end of the stuffing box, and the spring interposed between the
inner ring and the end ring, all constructed and relatively arranged substantially as
set forth.
2. The construction and arrangement of metallic packing substantially as
described and illustrated but without the end ring M.
Dated this 12th day of November 1896.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.