Improvements in and relating to Metallic Packing for Valve Rods and the like.
Year: 1897

page_text: Date of Application, 24th Nov., 1897
Date of Application, 24th Nov., 1897
Complete Specification Left, 24th Aug., 1896–Accepted, 15th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Metallic Packing for Valve Rods
and the like.
We, HORATIO HENRY STRONGITHARM, of Bolton Hey, Roby, near Liverpool,
in the County of Lancaster, Civil Engineer, and The UNITED KINGDOM SELF-
ADJUSTING ANTI-FRICTION METALLIC PACKING SYNDICATE, LIMITED, of 14, Cook
Street, Liverpool, in the County of Lancaster Manufacturers, do hereby declare
the nature of this invention to be as follows:-
This invention relates to metallic packing for valve rods and the like, and more
particularly to metallic packing for that class of valve rods which, like a Corliss
valve rod for example, have an angular movement instead of the usual longitudinal
movement. It is found in practice that the rings of the metallic packing fitted
to such rods have a tendency to rotate, or partially rotate with the rod, and that
this action is detrimental to the packing, and the object of our invention is to
improve the packing in this respect.
We will describe our invention as applied to a metallic packing composed of
two series of rings placed at opposite ends of the stuffing box and respectively
pressed by an interposed spring, against the neck ring and a gland ring fitted
in the gland. We find if the rings at the gland end are prevented from rotating
that the packing works satisfactorily, and we prevent this rotation as follows:-
We fit in a dove-tail key-way in the gland, a key so shaped that while the end
nearest the interposed spring is clear of the said spring, the portion of the key
opposite the spring bearing rings and the packing rings engages in a suitable slot
formed in each ring and so prevents rotation. We find it convenient to cut the
key-way in the gland from the inner side thereof but not to carry it through this
construction enables us to hold the key against axial movement. We also find it
desirable to make the key sufficiently long to engage with a notch cut in the gland
ring and thus prevent the rotation of the latter.
In some cases we may also fit such a key at the opposite or inner end of the
stuffing box and so prevent the rotation of the other set of rings and, if need be,
the neck ring.
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1807
Improvements in and relating to Metallic Packing for Valve Rods
and the like.
We, HORATIO HENRY STRONGITILARM, of Bolton Hey, Roby, near Liverpool,
in the County of Lancaster, Civil Engineer, and The UNITED KINGDOM SELF-
CD 077

page_text: ADJUSTING ANTI-FRICTION METALLIC PACKING SYNDICATE, LIMITED, of 14, Cook
Street, Liverpool, in the County of Lancaster, Manufacturers, 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 metallic packing for valve rods and the like, and more
particularly to metallic packing for that class of valve rods which, like a Corliss
valve rod for example, have an angular movement instead of the usual longitudinal
movement. It is found in practice that the rings of the metallic packing fitted
to such rods have a tendency to rotate, or partially rotate with the rod. and that
this action is detrimental to the packing, and the object of our invention is to
improve the packing in this respect.
We have illustrated our invention in the accompanying drawings in which
Fig. I is a medial section of the packing, and Fig. II a transverse section on the
line AA of Fig. I. Throughout the drawings, the same parts are indicated by
the same reference figures.
In the drawings our invention is illustrated as applied to a metallic packing
composed of two series of rings placed at opposite ends of the stuffing box and
respectively pressed, by an interposed spring, against the neck ring and a gland
ring fitted in the gland. We find if the rings at the gland end are prevented
from rotating that the packing works satisfactorily, and we prevent this rotation
as follows:
1 is the valve rod, 2 the stuffing box, 3 the neck ring, 4 the gland, 5 the gland
ring. 6 the interposed spring, the spring bearing rings, and S the packing
rings.
In a dove-tail key-way in the gland we fit a key 9 so shaped that while the end
nearest the interposed spring is clear of the said spring, the portion of the key
opposite the spring bearing rings 7 and the packing rings 8 engages in a suitable
slot formed in each ring, and so prevents rotation. We find it convenient, as
shown, to cut the key-way in the gland from the inner side thereof, but not to
carry it through; this construction enables us to hold the key against axial
movement.
We also find it desirable to make the key 9 sufficiently long to engage with a
notch cut in the gland ring 5 and thus prevent the rotation of the latter.
In some cases we may also fit such a key at the opposite or inner end of the
stuffing box and so prevent the rotation of the other set of rings, and, if need be,
the neck ring we do not, however, limit ourselves to the precise mode illustrated
of fitting the key, nor do we limit the application of our invention to the particular
form of packing described.
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:
1. In metallic packings for valve rods and the like, the use of a key such as 9,
substantially as and for the purpose described and illustrated.
2. The combination and arrangement of parts forming the improved metallic
packing for valve rods and the like, substantially as described and illustrated.
Dated this 23rd day of August 180S
SLOAN & LLOYD BARNES,
34, Castle Street, Liverpool, Agents for the Applicants.
SLOAN & LLOYD BARNES,
34, Castle Street, Liverpool, Agents for the Applicants.