Improvements in Metallic Gland Packing for Piston Rods, Valve Spindles, Hydraulic Rams and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Metallic Gland Packing for Piston Rods, Valve
Spindles, Hydraulic Rams and the like.
I, WILLIAM CARR LOCKWOOD, of Princeps Works, Matilda Street, Sheffield,
Yorkshire, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in metallic gland packing for piston
rods, valve spindles, hydraulic rams and the like parts of machinery requiring
a tightly packed joint.
In carrying out the invention, I locate within the stuffing box a removable
flanged casing adapted with an inner removable container of the gland packing,
the removable casing being located between the stuffing box and the gland cover
in steam tight contact with the latter, against which it is borne by springs
interposed between the flanges of the casing and stuffing box, with a floating fit
so that it can accommodate any slight variation of the piston rod or the like
in the stuffing box, and the gland being screwed down into steam tight contact
with the stuffing box.
The gland packing container is screwed into its casing and is formed with
series of overlapping through holes, apertures, slots or beds of any convenient
form and which serve to receive the metallic packing, which may be encased
in copper or brass, in segments which are fitted to the said holes, apertures or
slots, and which overlap with their inner ends in contact with the rod, against
which they are pressed by springs located in said holes, apertures or slots in
the container, and which take a bearing against said casing. Or, the segments
of metallic packing may be arranged lengthwise next the rod with the containing
slots or beds of the container correspondingly arranged.
According to another arrangement, I form the removable casing internally
of a tapered formation and fit the metallic packing thereto in segments of a
corresponding tapered or wedge shape formation and fit a cover to the thick
end of the packing. The casing is also provided with a removable cover which
is screwed in position by the screwing down of the gland to the stuffing box,
and a spring or springs is or are interposed between the cover of the casing and
the cover plate which rests on the packing, and which causes the latter to be
pressed down the tapered interior of the casing and to be pressed laterally
against the rod, the cover plate following the packing down as it descends, as
wear takes place, and causing it to be pressed evenly against the rod.
In some cases, adjustable screws may be used for adjusting the packing as
wear takes place.
When once placed in position, the metallic packing so arranged will not

page_text: require to be drawn out, but will not only require the addition of new packing
in small segments or pieces to follow up as wear takes place.
Dated this 19th day of December 1898,
DAY, DAVIES, & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.
Improvements in Metallic Gland Packing for Piston Rods, Valve
Spindles, Hydraulic Rams and the like.
I, WILLIAM CARR LOCKWOOD, of Princeps Works, Matilda Street, Sheffield,
Yorkshire, 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 improvements in metallic gland packing for piston
rods, valve spindles, hydraulic rams and the like parts of machinery requiring
a tightly packed joint, and is hereinafter described with reference to the accom-
panying drawings, in which:-Figures, 1, and 2; 3, and 4; 5, and 6;
respectively represent sectional elevations and sectional plans on the indicated
planes, of several modifications of the invention.
In carrying out the invention, the metallic gland packing, u, is adjustably
located within a casing, b, removably applied within and in steam-tight contact
with the stuffing box, c, through which the rod, spindle, ram or the like part, d,
works.
In the modification represented in Figs. 1, and 2, the packing, a, is located
in radial holes, 6, made in a container, 62, screwed into the casing, b, and bears
endwise against the rod, d, being pressed thercagainst by springs, &, located in the
holes, 1, and taking a bearing against the casing, b, and the casing is located
between the stuffing box and its cover, c', by bolts, &, in steam tight contact
with the cover, against which it is borne by springs, 6, with a floating fit enabling
it to accommodate any slight variation of the rod, d, or the like in the stuffing
box.
ย
Or, segments of the packing, a, may be arranged lengthwise of the rod, as, for
example, in the modification represented in Figs. 3, and 4, in which the lower
part of the casing, b, is made internally of a tapered formation adapted to receive
packing segments, a, of a corresponding formation and to allow of a ring, a',
being applied to the thick ends of the packing segments and to receive
spring, a, adapted to bear on the ring, a¹, and to be caused to do so by the
screwing down of a cover, b applied to the casing; so causing the packing
to be pressed down the tapered interior of the casing and to be pressed laterally
against the rod, the ring following the packing down as wear takes place and
it descends, and causing it to be pressed evenly against the rod.
Or, as represented in Figs. 5, and 6, the tapered packing may be guided in
channels, b, made in the casing and may be pressed down therein either directly
thereonto or by interposed springs, by projections, 67, from a cover, ³, which
may be located by studs, 68, rising from the casing and by nuts, ", the cover
being depressed by springs, 610, arranged between it and the nuts and so caused
to depress the packing and adjust it to the rod as wear takes place.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In metallic gland packing for piston rods, valve spindles, hydraulic rams

page_text: and the like, in combination, a stuffing box and a casing applied thereto, the
casing being fitted with metallic packing and with means of automatically press-
ing the same against the rod, spindle, ram or the like as wear thereof occurs, as
set forth.
2. The several modifications of the invention herein before described with
reference to the accompanying drawings.
Dated this 9th day of September 1899.
DAY, DAVIES, & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.