Improvements in Glands or Metallic Packing for Shafts and Spindles.
Year: 1891

page_text: Date of Application, 10th Nov., 1891
Complete Specification Left, 10th Aug.. 1892-Accepted, 10th Sept.,
1892
PROVISIONAL SPECIFICATION.
Improvements in Glands or Metallic Packing for Shafts and
Spindles.
We, HARRY WELFITT NICHOLLS, of 1 Cooper Street, Manchester, in the
County of Lancaster, Solicitor, and SHOLTO DOUGLAS, of 23 Adelphi Place,
Salford, in the said County, Engineer, do hereby declare the nature of this
invention to be as follows :-
Our invention relates to glands or metallic packing placed near the ends of shafts
or spindles and the object of our invention is to take up or compensate for end wear
between the gland and any part on the shaft or spindle abutting against the end of
the gland in order to prevent the escape of water steam or other fluid.
In carrying out our invention we fit upon the shaft or spindle a brass or other
bush preferably of metal one end of which bears against a collar or other part
secured to the revolving or partially revolving shaft or movable spindle the collar
resting against the other end of the bush.
We drill two or more radial holes through the shaft meeting in the centre and in
each hole we fit a stud or pin the inner ends of these pins meet in the centre and are
slightly bevelled and their outer ends project through the shaft and are so bevelled
or shaped as to bear against the edge of the bush and thus prevent it moving
endwise.
In order to set up the bush and compensate for wear when required we drill a
hole up the centre of the shaft from its end to just beyond the radial holes and cut
a screw thread for any convenient distance in this longitudinal hole preferably for a
short distance at each end; into this hole is fitted a screwed stud with its front end
coned or tapered to correspond with the bevelled ends of the radial pins; the other
end which passes into the shaft is threaded and a lock nut is fitted thereon.
After the parts are adjusted the nut is locked by being screwed up against the
end of the shaft; when through wear or other cause it is required to force up the
bush, the nut is slackened and the stud turned to screw it further into the hole and
against the radial pins which are thereby forced outward against the bush and
cause it to move forward until it bears upon or against the collar or other part on
the shaft or spindle and again makes a tight joint, when the lock nut is screwed up
and secured.
Instead of employing a screwed stud to move and adjust the bush and so make a
tight joint a spring or other suitable means may be employed, particularly when
the invention is applied to valve spindles and small shafts.
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1
Nombor 1801
H. B. BARLOW,
Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Glands or Metallic Packing for Shafts and
Spindles.
We, HARRY WELFITT NICHOLLS, of 1 Cooper Street, Manchester, in the
County of Lancaster, Solicitor, and SHOLTO DOUGLAS, of 23 Adelphi Place,
Salford, in the said County, 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 :-
Our invention relates to glands or metallic packing placed near the ends of

page_text: shafts or spindles and the object of our invention is to take up or compensate for end
wear between the gland and any part on the shaft or spindle abutting against the
end of the gland in order to prevent the escape of water steam or other fluid.
In carrying out our invention we fit upon the shaft or spindle a brass or other
bush preferably of metal one end of which bears against a collar or other part
secured to the revolving or partially revolving shaft or movable spindle the collar
resting against the other end of the bush.
We drill two or more radial holes through the shaft meeting in the centre and in
each hole we fit a stud or pin the inner ends of these pins meet in the centre and are
slightly bevelled and their outer ends project through the shaft and are so bevelled
or shaped as to bear against the edge of the bush and thus prevent it moving
endwise.
In order to set up the bush and compensate for wear when required we drill a
hole up the centre of the shaft from its end to just beyond the radial holes and cut
a screw thread for any convenient distance in this longitudinal hole preferably for
a short distance at each end; into this hole is fitted a screwed stud with its front
end coned or tapered to correspond with the bevelled ends of the radial pins; the
other end which passes into the shaft is threaded and a lock nut is fitted thereon.
After the parts are adjusted the nut is locked by being screwed up against the
end of the shaft; when through wear or other cause it is required to force up the
bush, the nut is slackened and the stud turned to screw it further into the hole and
against the radial pins which are thereby forced outward against the bush and cause
it to move forward until it bears upon or against the collar or other part of the
shaft or spindle and again makes a tight joint, when the lock nut is screwed up and
secured.
Instead of employing a screwed stud to move and adjust the bush and so make a
tight joint a spring or other suitable means may be employed, particularly when the
invention is applied to valve spindles and small shafts.
And in order that our invention may be fully understood and readily carried into
effect we will describe the accompanying sheet of drawings reference being had to
the figures and letters marked thereon.
Fig. 1 is a sectional elevation of a gland or metallic packing applied near the end
of a revolving shaft; and Fig. 2 is a sectional end view of the split packing rings
taken on the line A B, Fig. 1.
Fig. 3 is a similar view to Fig. 1 showing a modified construction, and Fig. 4
represents our improvements applied to the spindle of a valve.
In Figs. 1 and 2, a is part of a revolving shaft the end a¹ being supposed to
enter a vessel, not shown, containing steam or other fluid under pressure, 6 the main
portion of the gland or stuffing box and c a supplementary portion of the gland
which forms the chief bearing for the shaft; the split packing rings d e with their
split covering ring f bear against the face c' of the gland c and make a steam tight
joint the other ends of the rings d, e, and f rest against a bush or collar g fitted
loosely upon the shaft a; the rings and collar are shown fitted in a recess in the
gland and a spring his coiled or wrapped round the split ring f to hold the inner
split rings d and e in constant contact with the shaft a. In order to take up wear
between the face c' and the ends of the rings d, e, f, we drill say two or more radial
holes in the shaft a, and fit into each hole a stud or pin i, the inner ends of these
pins meet in the centre and are slightly bevelled and their outer ends project
through the shaft and are so bevelled or shaped as to bear against the end of the
bush or collar g and prevent it and the rings d, e, f, moving end wise, the parts being
held in the position shown by means of a stud j which is screwed into the shaft a
and locked by a nut k.
When it is necessary to adjust the packing the nut k is slackened and the stud j
turned so as to force out the pins i thereby moving the collar g along the shaft and
causing the packing rings to bear with greater pressure upon the face c', the parts
being secured by again tightening the nut k.
In Fig. 3 the pins i and stud j are dispensed with and in their place a coiled

page_text: spring is employed, this spring 1 bears against a shoulder b' in the gland b, and
exerts a constant end pressure upon the collar g which in its turn holds the split
rings d, e, f, against the face c¹ and so maintaining a steam tight joint.
Fig. 4 shows the same arrangement as Fig. 3 applied to a valve spindle. In this
view m is the valve casing, n the spindle made in two parts, and n' the valve secured
to the lower part of the spindle by a pin o; the upper part of the valve spindle
passes through a stuffing box p containing the split rings d, e, f, spring h, collar g,
and spring 1, all arranged and combined as in the preceding arrangement. The end
of the lower part of the valve spindle is squared and fits in a squared recess in the
upper part so that by turning the upper the lower part also turns with it but is free
to move longitudinally in the recess. The spring is compressed between the
collar g and a collar n² formed upon the upper part of the spindle n.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The combination with a revolving or partially revolving shaft or spindle, of
the split rings d, e, enclosed within the split ring around which is placed a coiled
or other spring and means such as the radially fitted wedge pieces i operated by the
coned spindle or by a spring for taking up wear and maintaining a steam tight
joint.
2. The several combinations and arrangements of parts embodying our improve-
ments in glands or metallic packing for shafts and spindles substantially as herein
described and shown.
Dated this 9th dow of August 1800
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicants.