June 1, 1948.
`
`E. B. HEATHCOTT
`PACKING FOR STUFFING BOXBS
`
`Filed July 13, 1945
`
`2,442,687
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`GDI Ex. 1021
`Page 1 of 3
`
`

`

`,
`Patented June t, 1948
`
`2,442,681'
`
`UNITED STATES PATENT .OFFICE
`
`2,4f2,SS7
`PACJmiG FOR STUFFING BOXES
`r
`E. B, Beatheott, Bomiton, Tu.. aut,nor to 1Jnl-
`1'enal Paelrin6 & Gane& Company, Bomton,•
`TeL, a corporation of Teus
`·
`I
`Application July 13, 1945, Serial No. 604,H3
`(CL 288-5)
`1 Claim.
`
`1
`, . This invention relates to an Improvement 1n
`~packings.
`This inveQtlon relates t o a packing which may
`be fitted around a tube or shaft passing th rough
`a wall, and whlch is fitted tlght)y around the
`tube or shaft wlthln a conventional stuffing box
`- which may be made integral with the wall sur(cid:173)
`rounding the opening therein so that no leakage
`between the wall and the tube or.sflaft can occur.
`The form taken by the packing-rings adapted to
`be interposed between the internal periphery of
`the stuffing box and the periphery of the tube or
`shaft is preferably substantially V-shaped in
`cross-section, so that the packing-rings may flt
`tightly within the stuffing box and around the
`shaft or tube ancl yet of such a structure that
`the packing-rings will not be easily crushed by
`tightening of the gland.
`An object of the invention is to provide a
`packing which will properly seal the space
`between a tube or shaft passing through a stuffing
`box in a wall.
`A iurther object is to provide packing-rings
`made substantially V-shaped in cross-section,
`wh!ch rings may be positlonecl between the inter- . 2~
`nal periphery of e. stuflbg box and the -i:eriphecy
`oi 2, shaft or ~ube passing through the stuffing
`box.
`A s-Wl further object oi the invention is to
`!,)rovide ;packing-rings which are substantially
`v -shaped in cress-section, and which rings may
`be placecl between the internal periphery of a
`stuffing box and the periphery of a tube or shaft
`passing through the stuffing box, and which rings
`may not be collapsed by pressure of fluid attempt(cid:173)
`ing to pass outwardly along the shaft or tube.
`Other objects ancl advantages will become ap(cid:173)
`parent from the following description taken In
`connection with the accompanying drawing,
`wherein certain embodiments are set forth by
`way of Illustration and example, but not by way
`of limitation.
`In the accompanying drawings:
`Fig. 1 Is a vertical cross-sec-Uon through a
`istufflng box made integral with a wall or the like,
`and having packing-rings constructed in accord(cid:173)
`ance with this invention in place therein; and
`Fig. 2 ts a vertical cross-section through a plu(cid:173)
`rality of ?llodifted rings, partly broken a..ya;v.
`The stuffing box 2 ls made integral with a wall
`4 through which a shaft Cor tube) S is adapted
`to pass.
`Within the stuffing box 2, V-shapecl lip-type
`packing-rings are placed, which rings are shaped
`and proportioned so that their outer extremities
`
`2
`bear against the internal periphery of-the stuffing
`box 2, and so that t heir inner extremities bear
`against th e periphery of the shaft or tube 6.
`Prefer ably the first ring 10, which is substantially
`II triangular in cross-section and bears on its ex(cid:173)
`ternal periphery against t he internal periphery
`of the stuffing box 2, and on its internal periphery
`against the periphery of the shaft or tube 6, is
`provided with one flat face, which will fit tightly
`10 against the bottom of the stuffing box 2. The
`other face of the r ing 10 is provided with a V(cid:173)
`shaped annular ridge or projection having a flat
`radial apex II. The next succeeding rings 12,
`the inner and outer edges of whlch are adapted
`16 to ·bear against the periphery of the shaft 6 and
`the internal periphery of the stuffing box 2, re(cid:173)
`spectively, are substantially V-shaped in cross(cid:173)
`section with their Inner and outer edges of Jess
`axial thickness than their central portions, and
`20 with their central portions form~d with flat radial
`parallel surfaces 13 lying in parallel planes trans(cid:173)
`verse to the ring axis, for bearing engagement
`wlth corresponding parts of the next adjacen~
`rings, as shown in Fig. 1. When positioned with(cid:173)
`in the stuffing box 2 and around the pipe 6, the
`apex of each v-shaped ring f2 is positioned sub-
`stantially in alignment with the apex of and in
`engagement with the bottom of the groove or
`hollow of the next succeeding ring 12, while the
`SO lip portions of successive rings are gpaced from
`each other. The surfaces of the lip portions or
`arms of the V, when viewed in cross section, a.re
`formed along straight lines converging from the
`thickened central or apex portion of the ring
`35 providing thin eclge portions at the extremities·
`of the J!p portions. The surfaces of the lip por(cid:173)
`tions, on the h ollow side of the ring, terminate
`at their juncture with the lip extremities in sharp
`feather edges.
`40 After a plurality of rings 12 have been posi(cid:173)
`tioned around the periphery of the pipe 6 within
`the stuffing box 2, a ring 14 which has an annular
`groove with a flat bottom 15 in one face and a
`substantially radial surface on its other face is
`115 positioned so that such flat bottom 15 contacts
`the corresponding bearing surface of the apex of
`the ridge or projection on the next preceding v(cid:173)
`shaoed ring 12, and is substantially in alignment
`with the spices of the preceding V--shaped rings
`60 12. After the afor ementioned rings have been
`positioned within the stuffing box 2 and surround(cid:173)
`ing the shaft 5, a suitable gland ring 16 is placed
`In contact with the base or flat side of the ring 14
`and is forced toward the Interior of the stuffing
`li6 box 2 by means of conventional studs 18, to secure
`
`GDI Ex. 1021
`Page 2 of 3
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`

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`4
`3
`gl&nd positioned around a shaft I, It will be un-
`the pack:lng rings 11.rmlY 1n place. The ataek
`derstood that the element I could equally well
`helght or the packJDg rings, In this Instance Is
`be a tube around the external periphery of which
`the same as the thickness o! the central portion
`between.lsurtaces 13, ls less than the dlmenalon
`no leakage would be permitted, and the term
`of the annular space to be packed, known as the G 5haft as herelD used ls not intended to exclude
`pack.Ing dlmenston. This permits pacldng of sev-
`a tubular member.
`era! rings within a short stu.fflng box or the llke. .
`Having described my Invention, I'clalm:
`A packing ring comprising a web of resWent
`With this construction, the plurality o! pack•
`tng-rlngs will be positioned as described above, so
`material wbatantlally V-sbaped In cross section
`that the Internal lips o! the rings 10, 12 and 14 10 to permit stacking of a plurality of said rings
`wm be ln contact with the periphery of the shaft
`when used and having a central apex portion
`I, and the external lips of the rings 10, 12 and 14
`. 511hstantlal]y thicker than the lip portions and
`will contact the internal periphery of the stutllng
`thin edge portions at the extremities of the
`lip portions, the packJDg dimension of the ring
`box 2. By tightening the studs II, the gland ring
`1'6 may . lbe dra\Vll tightly against the ring IC IS. being greater than Its stack height, the central
`which In ·turn would bring pressure to bear against
`thickened portion having faces lying In parallel
`planes iransverse to the ring axis to provide
`the next preceding v-shaped ring IZ. Each ad-
`jacent v-shaped ring 12 will bear against the
`· mating central annular seat surfaces between ad•
`wide bearing zone of the center portion of its ·
`· Jacent rings, for transmitting axlalforces between
`preceding ring, but by reason of the limited cen- 20 rings without distorting the lip portions thereof
`trally located zone of Its contact, will not force
`In operation, the surfaces of the said lip portions,
`the Ups -of the v-shaped rings outwardly and
`viewed In cross-section, converging elong straight
`lines from the thickened central portion, the sur-
`tightly against each other. Because of this con-
`structlon. even an excessive pressure applied by
`faces of the lip portions on the hollow side of the
`tightening the studs 18, the packing-rings will 115 V terminating in feather edges at their Junctures
`not be completely collapsed, and the spaces be-
`with the lip extremities whereby -upon lnstalla-
`tween their edges or lips will remain open sub-
`tlon · spaces are provided between edge portions
`stantlally from the central thickened section to
`of adjacent rings from the thickened portion to
`the lip edges, said spaces adapted to accommodate
`the extremities of the J!ps, to receive pressure
`fluid adapted to hold such edges or lips In sealing IO lubricant and serve as pressure chambers.
`E. B. HEATHCO'IT.
`engagement with the stuffing box and shaft.
`It will be understood that by the use of v-
`REFERENCES CITED
`shaped packing-rings, the greater ,the pressure
`The following references are of record In the
`dllferentlal sealed against, the more tightly the
`edges of the packing-rings will be.forced against U file of this patent:
`.
`the surfaces which they are adapted to contact
`UNITED STATES PATENTS
`and embrace.
`It will be obvious from the disclosure ·of the
`substantially v-shaped packing rings that those
`disclosed In Fig. 1 are provided with a relatively 40
`flat apex. whereas the modified rings 20, .22, and
`24 disclos-ed In Fig. 2 have deftnlte angular spices.
`Each, however, provides rings shaped to proV!de
`a llmlted bearing zone between adjacent rings
`while leaving the J!ps or edges thereof free and 411 Number
`slightly spaced from each other.
`495,671
`While Fig. 1 of the drawtngs discloses a packing r
`
`Date
`Name
`Walker ____________ Aug. 13, 1912
`Qreenoe - ---------- Nov. 13, 1917
`Nuckles -------- - --- May 26, 1942
`BuJflngton ,et al. ____ May 20, 1947
`FOREIGN PATENTS
`Date
`Country
`Germany _________________ 1930
`
`·fl,"2,987
`
`Number
`1,035,279
`l,2~6,089 .
`2,284,340
`2,420,929
`
`GDI Ex. 1021
`Page 3 of 3
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