IMPROVEMENTS IN METALLIC PACKINGS FOR STUFFING BOXES
Year: 1884

page_text: I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN METALLIC PACKINGS FOR STUFFING BOXES a communication to me from
abroad by Thomas Johns of The Dalles in the County of Wasco and State of
Oregon, United States of America, Machine Shop Foreman to be as follows:-
"
This invention relates to improvements in metallic packings for piston rods,
valve rods, pump plungers, etc, the object being to provide a simple, durable, and
effective packing which shall be capable of being adjusted to compensate for wear
or tightened around the piston rod, and with these ends in view the invention
consists in certain details of construction and combinations of parts hereinafter
described.
In applying the invention to a piston rod, split sleeves preferably two in number,
are placed one above the other within the stuffing box, said sleeves having a
tapering or conical bore. One continuous sleeve would suffice, or if desired the
sleeve may be formed in three parts, the tapering bore of one sleeve exactly
registering with that of the adjacent one, and the end of the bore of the upper
sleeve being preferably made straight.
Within these sleeves is adapted to fit a ring which may be formed in one, two
or more sections, placed one above the other, two being employed in the present
example. These rings are also split and are so tapered as to snugly fit within the
tapering bore of the sleeves. The end of the upper ring does not extend quite
up to the straight portion of the upper sleeve, to allow for adjustment as will be
hereinafter explained. The rings are provided with straight bores adapted to
register with each other and with that of the outer end of the upper sleeve, which
extends slightly beyond the end of the stuffing box, to receive the pressure of the
gland.
When the rings have become worn from the constant friction of the piston rod,
the parts may be adjusted by simply turning the gland nuts, thereby forcing the
gland towards the stuffing box and also forcing the sleeves down on the rings,

page_text: which being split are thereby more tightly closed around the piston rod, making a
steam tight joint. If desired, the inner sides of the rings may be provided with
recesses for the purpose of lubrication. The upper sleeve may also be grooved on
its exterior in order to make it more flexible when pressed down by the gland.
If desired the several parts may be again split, thus making eight pieces, in which
ease they may be placed in position on the piston rod without the necessity of
removing the piston head, and again by using this form of packing the ordinary
gland may be employed.
The several parts of this packing may be made of any suitable material and if
desired may be formed from different metals, thereby lessening the friction.

page_text: COMI LEIE DI EUITIVATION,
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
METALLIC PACKINGS FOR STUFFING BOXES " (a communication to me from abroad by
Thomas Johns of The Dalles in the County of Wasco and State of Oregon, United
States of America Machinery Foreman,) 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 improvements in metallic Packings for Piston Rods
valve rods pump plungers, etc, the object being to provide a simple durable, and
effective packing which shall be capable of being adjusted to compensate for wear
or tightened around the piston rod and with these ends in view the invention
consists in certain details of construction and combinations of parts as will be
hereinafter described and pointed out in the claims.
In the accompanying drawings Figure 1 is a view of the improvement shown in
connection with a stuffing box. Figure 2 is a view of the improved packing partly
in section and part in elevation. Figure 3 is a view in transverse section on the
line xx of Figure 2.
A represents a stuffing box formed on a cylinder. B'the gland, and C the gland
nuts. In the stuffing box is located the split sleeves D D¹ placed one above the
other and provided with a tapering or conical bore D. While I prefer to employ
two sleeves I would have it understood that I in no wise limit myself to such
number as one continuous sleeve would suffice, or if desired the sleeve may be
formed in three parts, the tapering bore of one sleeve exactly registering with that
of the adjacent one and the end of the bore of the outer sleeve D being preferably
made straight as shown in Figure 1 of the drawings.
Within these sleeves D D is adapted to fit a ring which may be formed in one
two or more sections but which I have shown in two sections E E¹. These rings
are also split and are so tapered as to snugly fit within the tapering bore of the
sleeves D D'. The end of the ring E¹ does not quite extend to the straight portion
of the sleeve D to allow for adjustment as will be hereinafter explained. The rings
are provided with straight bores adapted to register with each other and with that
of the outer end of the sleeve D. The outer end of the sleeve D is adapted to
slightly extend beyond the end of the stuffing box and on which is adapted to bear
the gland B.
When the rings have become worn from the constant friction of the piston rod,
the parts may be adjusted by simply turning the gland nuts C thereby forcing the
gland B towards the stuffing box and also forcing the sleeves D D¹ down on the
rings, which being split are thereby more tightly closed around the piston rod
making a steam tight joint. If desired the inner sides of the rings may be pro-
vided with recesses (not shown) for the purpose of lubrication and if desired the
upper sleeve D may be provided with grooves D³ in order to make it more flexible
when pressed down by the gland B.

page_text: If desired the several parts may be again split, thus making eight pieces,
in which case they may be placed in position on the piston rod without the
necessity of removing the piston head, and again by using this form of packing
the ordinary gland may be employed.
The several parts of this packing may be made of any suitable material, and if
desired may be formed from different metals thereby lessening the friction.
When
The invention is exceedingly simple in construction and durable in use, there
being but little wear on the rings, and but little or none on the sleeves.
the cones are worn so that they will not fulfill their functions, they may be removed
and the metal reused, as it has sustained no injury.
Although the invention has been described in connection with a piston rod
I would have it understood that the invention is not confined to such application
as it may be used in connection with plump plungers, valve rods, and analogous
devices with equally good results.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1st The combination with a stuffing box and a split sleeve closely fitting within
the stuffing box and provided with the combined conical and straight bore, of a
split ring having a straight bore, of the same size as the straight bore of the
sleeve the lower end of said ring being adapted to fit closely within the stuffing box
while the upper portion thereof is made conical to fit within the conical bore of the
sleeve.
2nd The combination with a stuffing box and a split sleeve closely fitting within
the stuffing box and provided with the combined conical and straight bore, of a
split ring having a straight bore, the lower end of said ring being adapted to fit
closely within the stuffing box while the upper portion thereof is made conical
to fit within the conical bore of the sleeve, and a gland secured to the stuffing box
and adapted to bear on the outer end of the sleeve, substantially as set forth.
3rd The combination with a stuffing box and a split sleeve composed of two or
more sections closely fitting within the stuffing box one of said sections being
provided throughout a portion of its length with a straight bore and with a conical
bore throughout the remainder of its length said conical bore registering with the
conical bore of the other sections, of split rings having straight bores, and situated
within the sleeve, and a gland for forcing the sleeve around the rings.