Improvements in Metallic Packings.
Year: 1899

page_text: Improvements in Metallic Packings.
I, SYDNEY ASLINE WARD, of Broad Street Lane, City of Sheffield, Engineer,
do hereby declare the nature of my invention to be as follows:-
My invention relates to improvements in floating metallic packings suitable
for a variety of purposes, but especially adapted for use in locomotive engines
and the like, and is an improvement upon my former l'atent No. 672 of 1893.
The packing is preferably divided into three pieces, the stopping pieces or
gluts of triangular form being inserted at each junction of the packing pieces.
These packing pieces which are coned underneath fit into a correspondingly
coned collar which encloses or encircles the piston rod, or other rod, and the
packing pieces with the stopping pieces or gluts are held in position round the
rod by a spring. These parts are held in the gland cover.
The coned collar has a tubular extension which encircles the rod and passes
into the stuffing box or gland box, and round this part are coiled one or more
spiral springs which force the coned collar upwards, or upon, the coned packing
pieces and cause them to contract upon the rod.
The packing so constructed and contained in the gland cover, can be put
together before being placed upon the rod, which is a great advantage and a
saving of time when the rods are in confined or awkward positions.
011
1 1000
ROBT. F. DRURY, C.P.A.,
Agent for Applicant,
ank Buildings, George Street, Sheffield.
1, SYDNEY ASLINE WARD, of Broad Street Lane, City of Sheffield, 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 improvements in metallic packings and more parti-
cularly to what are known technically as floating packings which are able to
give and take or adjust themselves to any vibration or irregularity in the move-
ment of the rod to which they are affixed.
.
Such packings are specially useful in engines and the like, but they are also

page_text: applicable to many other purposes of a like nature, and this invention consti-
tutes an improvement upon my former metallic packing described in the Speci-
fication of Patent No. 672 of 1893.
In order that it may be clearly understood I have illustrated its construction
in the annexed drawings as it is applied to an ordinary stuffing box of a piston
rod.
Fig. 1 represents a stuffing box with packing in position, half being shown
in vertical section.
Fig. 2, plan of the upper face of packing.
Fig. 3, plan of the under face of packing.
Fig. 4, elevation and plan of one section of packing.
Fig. 5, plan of glut.
A packing such as that illustrated in the drawings is preferably divided into
three sections marked E, the circle round the piston rod A being completed by
the insertion of a glut or stopping piece F, at each junction of the packing
pieces E.
The gluts Fare of triangular form as shown in Figs. 1 and 5, the anti-
friction metal (of which they as well as the packing pieces are made) is supported
within a frame of gunmetal, the upper edges of which marked f, are seen in
the drawings.
They fit accurately in recesses cut out of the adjacent ends of the packing
pieces and marked R, and are to prevent the passage of steam through the
spaces W, left between the sections, E, for wear and to permit contraction upon
the rod.
The said sections E, and the gluts F, are encircled by a flat annular spring II,
of one or more convolutions, and these portions of the packing are preferably
contained within a cover C, which is recessed for that object.
The lower and conical portions, of the parts E, are held within a correspond-
ingly coned collar G provided with a tubular extension y, the said collar G
being supported, and forced forward upon the packing sections E, by two or
more coiled wire springs S.
The forward pressure of the coned collar acting upon the coned portion e of
ё
the sections E, and against the cover C causes them to contract upon the rod A,
and prevent the escape of steam.
Sufficient clearance is provided for lateral movement of the packing to
accomodate itself to vibration or unequal working of the rod, and a brass bush b
let into the bottom of the stuffing box B, provides a flat bed for the springs S
to bear upon but this is optional; R denotes a ring of copper wire partly
embedded in a groove formed in the face of the cover and forms a packing
ring when screwed down upon the face of the stuffing box.
A metallic packing constructed as described and illustrated with its upper
part contained in the cover of the stuffing box 13 or gland, can be put together
upon the rod before being finally placed in working position, which is a great
advantage and also a saving of time especially when the rod to which it is to
be applied is in a confined or awkward position.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I wish it to be
understood that I do not claim anything which I have claimed in my former
Patent No. 672 of 1893 but what I claim is:-
1A metallic packing for piston and other rods constructed as herein before
described, and having the sectional packing pieces E, with the gluts F, and
the coned head of the collar G, and the spring H, contained in the coverplate C
of the stuffing box B as described and shown.
2 In a metallic packing as herein before described the construction of the
sectional packing pieces E, as herein before described and shown in Fig. 4.

page_text: 3 The combination and arrangement of the several parts constituting a
metallic packing for piston rods and like rods as hereinbefore described and set
forth in the drawings annexed.
Dated the 6th day of December 1890
ROBT. F. DRURY, C.P.A.,
Agent for Applicant.