Improvements in connection with Metallic Packings for Stuffing. boxes and the like.
Year: 1898

page_text: Date of Application, 15th Jan., 1898
Complete Specification Left, 14th Oct., 1898-Accepted, 19th Nov., 1898
PROVISIONAL SPECIFICATION.
Improvements in connection with Metallic Packings for Stuffing.
boxes and the like.
I, HARRY HORTON, of 7, Upper Grove Street, Smethwick, Birmingham, in
the County of Warwick, Engineer, do hereby declare the nature of this invention
to be as follows:
:-
This invention has reference to improvements in connection with metallic
packings for stuffing-boxes and the like.
I find in practice that the nuts upon the gland studs become unscrewed by
the vibrations caused by the working of the piston rod of the engine and steam is
thus enabled to escape, and in some instances the neck-bush, which works or bears
against the fillet of the stuffing-box, of the packing is likewise liable to be moved
out of its position and broken and considerable damage thereby incurred.
Now the purpose of this my said invention is to obviate the foregoing objec-
tions in a cheap and effective manner to which end I fit within and juxtaposed
to the walls of the stuffing-box a suitable metallic spring of a greater length than
the stuffing-box itself so that when the gland is screwed up in position the spring
will be compressed between the neck-bush and the gland and the potential
energy thereof prevent the objections herein before referred to.
Improvements in connection with Metallic Packings for Stuffing-
boxes and the like.
I, HARRY HORTON, formerly of 7, Upper Grove Street, Smethwick, Birmingham,
in the County of Warwick, but now of 2, Arksey Terrace, Aviary Road, Armley,
Leeds, in the County of York, 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 relates to certain improvements in connection with metallic
packings for stuffing boxes and the like, the objects of the invention being to
prevent the unscrewing of the nuts of the gland studs, which usually results
from the continued vibration to which they are subjected, and also to prevent
the displacement of the neck bush.

page_text: I have illustrated my invention in the accompanying drawing, which is an
elevation, in medial section, of a stuffing box and metallic packing constructed
according to my invention.
R is the rod to be packed, 1 the stuffing box, 2 the gland, 3 the gland studs
and 4 the nuts thereon; the packing comprises a series of rings 5 held in sleeves 6
and 7 which bear respectively against the gland 2 and the neck bush 8; the
sleeves are maintained in contact with their seatings by the pressure of an inter-
posed spring 9 which is transmitted through the rings 10 and the packing rings 5.
It will be seen that in this construction of packing it is essential that the gland 2
shall be maintained rigidly in position by the nuts 4, and that any tendency of
the neck bush 8 to move axially shall be prevented, as the displacement of either
the neck bush or the gland is prejudicial to the successful working of the packing;
and it will further be seen, that by fitting a spring such as 11, interposed between
the gland 2 and the neck bush 8, the axial movement of the latter is resisted,
and as the former is subjected to a steady outward elastic pressure there is much
less tendency for the nuts to slack back as a result of continued vibration; in this
way the action of the spring 11 is two-fold, and its addition to the packing serves
to improve the latter in regard to the two features referred to.
It is to be noted that the spring 11 is quite independent of the spring 9 and
that the functions of the two springs are essentially different.
The spring 11 is preferably helical and of rectangular cross-section, as shown,
but of course its shape may be modified according to circumstances; the normal
length of the spring must obviously be greater than the axial length of the
stuffing box.
It is to be understood that the well known form of packing selected to illus-
trate the application of my invention is intended to be merely typical of such
packings generally, and to the details of the packing as such, I, of course, make
no claim, but:-
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. The improvement in metallic packings of the class herein referred to, which'
consists in fitting in the stuffing box, a spring independent of the packing proper and
interposed between the neck bush and the gland, and adapted to resist axial move-
ment of the former and to exert a constant outward elastic pressure against the
nuts which hold the latter in position: substantially as described and illustrated.
2. The improvement in metallic packings substantially as described and illus-
trated in the drawing.
Dated this 13th dor of October 1808
SLOAN & LLOYD BARNES,
34, Castle Street, Liverpool, Agents for the Applicant.