Improvements in Metallic Packing for Piston Rods, Valve Rods, and the like.
Year: 1897

page_text: Date of Application, 21st Dec., 1897.-Accepted, 19th Feb., 1898.
COMPLETE SPECIFICATION.
Improvements in Metallic Packing for Piston Rods, Valve Rods,
and the like.
I, LEOPOLD KATZENSTEIN, of 223, West 133rd Street, in the City, County,
and State of New York, United States of America, 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 packing and has for its object to produce a packing
adapted for use as a piston and valve rod packing in situations where high steam
or other fluid pressures are employed to take up extra vibrations of the rod and which
may be applied to and removed from the rod and stuffing box without disconnecting
the said rod thereby saving considerable time, labour and expense.
My invention will be understood by referring to the accompanying drawing, in
which-
Figure 1 is a longitudinal section through a stuffing box embodying my invention,
showing one of the rings in side view, the section being taken on line 1-1 of
Figure 2;
Figure 2 is a transverse section of the stuffing box and packing and the enveloping
casing for the packing rings;
Figure 3 is an interior view of one-half of the box portion of the casing for
enveloping the packing rings;
Figure 4 is a sectional view of the outer beveled ring;
Figure 5 is an inside face view thereof, the line 4-4 indicating the line upon
which the section Figure 4 is taken;
Figure 6 is a section of the partition or spacing plates intervening between the
elastic packing rings to space the same apart and to prevent the elastic packing
rings from rubbing against each other and imparting a turning motion to each
other;
Figure 7 is a plan or face view of the said partition or spacing plates shown in
Figure 6, the line 6-6 showing the line of cut on which Figure 6 is taken;
Figure 8 is an isometric view of the end ring of the system which is next to the
gland;
Figure 9 is a preferred form of spring for pressing the sections of the sectional
packing rings together, so that they will grip the rod in a tight and elastic fashion ;
and
Figure 10 shows the casing containing the above described packing rings contained
in an ordinary stuffing box using the ordinary gland, as will be fully explained
hereinafter.
In the drawing, A is any usual piston or valve rod. B is any desired stuffing box
which may be provided with any desired gland. In Figure 1, I have shown this
gland as C, the same being a special gland and held against the face of the
stuffing box by screws a passing through the flange of the stuffing box and through
the flange of the gland between which flanges a gasket b may be interposed.
Referring now to Figure 10, it will be noted that I have shown the piston rod as

page_text: passing through an ordinary stuffing box B which is provided with an ordinary
gland C, the flange of which gland does not come flush against the face of the
gland of the stuffing box, but the flanges are at some distance apart. I would state,
however, that any ordinary existing gland and stuffing box may be employed.
Contained within the stuffing box is a casing which is shown as made up of a
plurality of parts. The casing, however, may be of any desired construction. I
prefer to make the casing as shown, namely, a box portion consisting of the parts d
and e, which fit together. The part d is shown separate in Figure 3 and is
preferably provided with grooves d¹ to receive the spacing plates hereinafter
referred to and shown in Figures 6 and 7, and pins d² for entering cuts in the
spacing plates to prevent the said spacing plates from rotating in the casing. The
box portion of the casing is provided with a cover comprising two parts of corre-
sponding with each other. The box portion of the casing and the cover portion of
the casing may be provided with pins and holes for receiving the said pins to hold
the parts from moving on each other. It will be obvious that the construction of
casing may be variously modified according to the location and circumstances.
I will now proceed to describe the system of packing rings contained in the casing
and surrounding the rod. Beginning at the left of Figure 1, g represents a ring
which is provided with an external peripheral groove. A reference to Figure 2 will
disclose the general character of this ring. In Figure 2 the packing ring is shown as
consisting of two rings each cut in three parts, one ring contained within the
other and the joints between the parts or sections segregated or broken, that is
to say, the outer ring consists of the sections 1, 2, 3, and the inner ring of
the sections 4, 5, 6. The joints between the sections of the outer ring 1, 2, 3, come
It
opposite solid portions of the joints between the sections. 4, 5, 6, and vice versa.
will be observed that a pin 7 is provided on the part 1 of the exterior ring which pin,
entering between the sections 4, 5, of the inner ring prevents the said inner ring from
rotating on the outer ring. All of these parts constituting the packing ring are
pressed together so as to grip the rod strongly by means of an endless spring h. This
endless spring h may be of any desired construction. The preferable construction is
shown in Figure 9, wherein a spiral spring ring is shown connected by a short piece of
spiral spring which is secured into the ends of the spring h, making a complete ring.
The spiral spring rings may, however, be fastened together in any desired manner.
prefer to interpose between the spiral spring which is of hard metal, and the packing
ring which is of soft metal, a shield consisting of a circular bent platej fitting in the
groove of the packing ring and interposed between the said packing ring and the
spring, so that the convolutions of the spiral spring will not cut or wear into the soft
packing ring. The shield ; likewise acts to prevent steam froin escaping through the
cuts in the rings. It will be understood that the end rings g and k are in all respects
similar and the intermediate rings and m are likewise similar to g and k, with the
exception that one face of each ring 1 m is beveled to receive an expanding spring
ring n which is preferably a sectional ring surrounded by a spring o.
I
The function of
this expanding spring ring n is to tend to force the rings and m apart so as to press
all the rings of the system together. It will be observed that I have interposed
between the rings g and land k and m, partition or spacing plates p, which partition
or spacing plates are clearly shown in Figures 6 and 7, as made in two parts. These
spacing or partition plates are shown as provided with a recess q. The partition or
spacing plates rest in the grooves d' and the recesses q embrace the pins d² so that the
grooves will prevent the plates from being displaced laterally and the pins will prevent
the plates from rotating on the rod. The spacing plates have a slight lateral play in
the grooves d¹ which are made wider than the thickness of the plates when the ex-
panding spring ring n is used, so that when the expanding ring n forces the packing
rings laterally, the rings land m will press against the spacing plates and move
them slightly so as to bring them against the rings g and k so as to take up the
wear during the work. It will be understood, however, that I may dispense with
the expanding spring ring n in which case the spacing plates need not have any
lateral play in the grooves. Outside of the casing and between the said casing

page_text: and the gland, I may employ additional rings of soft material.
In the present
instance, I have shown a two-part beveled ring of soft white metal, shown in
detail in Figures 4 and 5, and a ring & bearing against the wall of the stuffing
box and receiving the thrust of the beveled spring ring r, which beveled ring
receives the thrust of the tapered top ƒ of the casing.
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. The combination of packing rings, consisting of metallic sections elastically
secured together and spacing or partition plates contained in the casing and prevented
from rotating therein.
2. The combination of metallic packing rings, comprising soft metal sections held
together by a spring, partition plates interposed between the rings and an expanding
ring n for taking up the wear of the rings, substantially as described.
3. The combination of a series of metallic packing rings each consisting of a
plurality of sections, with means for holding the same together, whereby the metallic
packing rings may be put on the piston rod of an engine without disconnecting the
said piston rod.
4. The combination of a sectional casing, a series of sectional metallic packing
rings contained within the casing, all arranged so that the casing and the packing
rings may be put on the piston rod of an engine without disconnecting the said piston
rod.
5. The combination of a series of elastic packing rings, each comprising a sectional
metallic ring, the said rings breaking joint with each other throughout the system so
as to prevent leakage of the steam.
6. The combination of a series of sectional metallic packing rings, movable parti-
tion plates interposed between pairs of the packing rings and means for expanding
the rings and moving the partition plates so as to make tight joints and to compensate
for the wear on the rings.
7. The combination of a casing, an elastic metallic packing contained in the said
casing arranged to be put around a piston rod without disconnecting the engine and
additional rings to enable the said casing to be employed in a stuffing box employing
any ordinary or desired character of gland.
8. The combination of a metallic packing carried in a casing provided with a
beveled end and a beveled ring receiving the thrust of the beveled end and a gland
receiving the ultimate thrust of the ring, whereby slight irregularities in the align-
ment of the shaft may be compensated for.
9. In a packing, the combination of sectional end rings, intermediate sectional
rings recessed for the reception of sectional metal pieces, the rings being beveled and
recessed peripherally, springs for holding the beveled rings firmly around the piston
rod, a triangular spring expansion ring intervening between the beveled rings, and a
pin or pins for holding said rings in alignment, adjacent sectional rings breaking
joints with each other from end to end of the packing.
Dated this 21st day of December 1897.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.