Improvements in Metallic Packings for the Stuffing Boxes and Glands of Piston Rods and the like.
Year: 1891

page_text: Date of Application, 2nd May, 1891
Complete Specification Left, 2nd Feb., 1892--Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Metallic Packings for the Stuffing Boxes and
Glands of Piston Rods and the like.
1, REUBEN LOWE BARKER, of Cheetham Hill Road, Dukinfield, in the
County of Chester, Engineer, do hereby declare the nature of this invention to be
as follows:-
My invention relates to metallic packings for the stuffing boxes and glands of
piston rods and the like, the object of my invention being to make an effective and
simple packing.
The improved packing is contained as usual in a stuffing box provided with a
cap, each packing consists of a pair of bevelled brass or other metal rings fitted to
the piston rod and divided into segmental pieces the outer surfaces of these rings
are bevelled in opposite directions being smallest where they approach one another
a recess is also turned in each ring at the large diameter to receive a brass or other
ring fitted to the piston rod and also divided into segments the solid part of one
ring covering the split portion of the other so as to break joint and the edge faces
of each bevelled ring and its enclosed small ring bear against a loose collar fitted
on the piston.
Fitted on each bevelled ring is a solid ring preferably flanged and a compressed
coiled spring is wrapped round the periphery of the solid rings so that the ends of
the spring bear against the flanges of the rings the pressure exerted acting upon
the coned segments and split ring causes them to be maintained in close contact
with the piston rod. In place of the coiled spring wrapped round the solid rings
the latter may be made without flanges in which case I drill a corresponding
number of holes round the inner or adjoining edge of each ring and fit a number of
small coiled springs in such holes the tension of which is exerted to press the rings
apart and tighten the coned segments and split rings on to the piston rod. I prefer
to employ two sets of packings and divide the two by a disc or collar which fits
upon the piston rod and the bolts of the cap of the stuffing box are preferably
passed through the disc.
In order to put the improved packing into a stuffing box I propose to connect
the collars on each side of the coned segments and split rings by means of links or
chains which hold the parts together.
Dated this 1st day of May 1801*
H. B. BARLOW,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Metallic Packings for the Stuffing Boxes and
Glands of Piston Rods and the like.
I, REUBEN LOWE BARKER, of Cheetham Hill Road, Dukinfield, in the
County of Chester, 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 :-
My invention relates to metallic packings for the stuffing boxes and glands of
piston rods and the like, the object of my invention being to make an effective and
simple packing.
The improved packing is contained as usual in a stuffing box provided with a
cap, each packing consists of a pair of bevelled brass or other metal rings fitted to

page_text: the piston rod and divided into segmental pieces the outer surfaces of these rings
are bevelled in opposite directions being smallest where they approach one another
a recess is also turned in each ring at the large diameter to receive a brass or other
ring fitted to the piston rod and also divided into segments the solid part of one
ring covering the split portion of the other so as to break joint and the edge faces
of each bevelled ring and its enclosed small ring bear against a loose collar fitted
on the piston.
Fitted on each bevelled ring is a solid ring preferably flanged and a compressed
coiled spring is wrapped round the periphery of the solid rings so that the ends of
the spring bear against the flanges of the rings the pressure exerted acting upon the
coned segments and split ring causes them to be maintained in close contact with
the piston rod. In place of the coiled spring wrapped round the solid rings the
latter may be made without flanges in which case 1 drill a corresponding number
of holes round the inner or adjoining edge of each ring and fit a number of small
coiled springs in such holes the tension of which is exerted to press the rings apart
and tighten the coned segments and split rings on to the piston rod. I prefer to
employ two sets of packings and divide the two by a disc or collar which fits upon
the piston rod and the bolts of the cap of the stuffing box are preferably passed
through the disc.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying sheet of drawings reference being had to
the figures and letters marked thereon.
Fig. 1 is a longitudinal section of a stuffing box and piston rod fitted with my
improved metallic packing. Figs. 2 and 3 are cross sections of part of the same on
the lines A B and C D respectively.
In the drawings, a represents part of the piston rod of a steam engine, b the
stuffing box and the cap of the same, secured by bolts d; the stuffing box and
cap are shown bored out to fit the piston rod, and two sets of spring packings are
shown in the box, varying somewhat in construction and separated by a disc e
through which the bolts d pass, on each side of this disc, as well as at the inside
face of the box b and cap c is a loose collar fagainst which the large diameter or
back of each split packing ring 9 rests, these split rings have oppositely bevelled
outer surfaces and a recess is turned in the back of each ring g to receive a small
split ring (or rings) h which also abuts against one of the loose collars f; or in
place of split rings h, loose bits h¹ can be fitted in recesses made to receive them in
the rings g; both the split rings g and small split rings h are divided so as to
break joint with one another and propose to make the split rings and collars
of brass.
The outer surface of each split ring g is surrounded by a solid ring i shown
flanged at in one instance, and on these rings i is coiled a spiral spring ; which
exerts an end pressure on the flanges ¹ thus pressing the rings 9 against the loose
collars fand on to the piston rod a; the spring j also tends to maintain the rings i
in contact with the bevel surface of the split rings g thus making a good steam
tight joint between the piston rod and the packing.
In the other arrangement shown the rings i are not flanged, and in place of them
and the spiral spring; I drill a corresponding number of holes k round the inner or
adjoining edge of each ring i and fit into each pair of holes, or any desired number
of the pairs of holes, a small coiled spring k fitted inside a sheet metal casing, not
shown, made in two portions so as to slide into one another; the tension of the
springs being exerted to press the rings i apart and thus press the split rings 9 on
to the piston rod, the bits h¹ covering the intersections of the rings g and making
with the latter a steam tight joint.
:
Both the rings g and h are divided by diagonal cuts as shown best in Fig. 2,
and thus will adjust themselves automatically, whereas when rings are divided
by radial cuts, after a certain amount of wear it becomes necessary to take them
out and file off the ends.
.
In order to put the improved packing into a stuffing box I propose to connect

page_text: the collars on each side of the coned segments and split rings by means of links or
chains which hold the parts together.
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. A metallic packing for piston rods and the like composed essentially of a pair
of flanged split rings with their exterior surfaces coned in opposite directions and
surrounded by reversely bevelled rings, so arranged that the pressure of a spring
tends to press the packing on to the rod.
2. A metallic packing for piston rods and the like composed essentially of a pair
of split rings with their exterior surfaces coned in opposite directions and
surrounded by reversely coned rings which latter are forced apart by springs and
so tend to press the packing on to the rod.
3. In a metallic packing for piston rods and the like the combination with split
packing rings of a small split ring or bits let into a recess or recesses provided for
the purpose in the split rings.
4. In a metallic packing for piston rods and the like the combination with the
diagonally divided rings g, of the diagonally divided rings, substantially as shown
and described.
5. The construction combination and arrangement of parts constituting the
improved metallic packing for piston rods and the like.
Dated this First day of February 1892.
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant.