US2435913A - Screw-threaded pivoted closure - Google Patents

Screw-threaded pivoted closure Download PDF

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US2435913A
US2435913A US708607A US70860746A US2435913A US 2435913 A US2435913 A US 2435913A US 708607 A US708607 A US 708607A US 70860746 A US70860746 A US 70860746A US 2435913 A US2435913 A US 2435913A
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opening
ring
head
closure
gasket
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US708607A
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Marion P Wall
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Combustion Engineering Inc
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Combustion Engineering Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/02—Detachable closure members; Means for tightening closures
    • F16J13/12—Detachable closure members; Means for tightening closures attached by wedging action by means of screw-thread, interrupted screw-thread, bayonet closure, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/16—Pivoted closures
    • F16J13/18—Pivoted closures pivoted directly on the frame

Definitions

  • the closure includes a head capable of resisting the maximum pressure within the bottle, a gasket for effectively sealing the space between the head and bottle, and means associated with the head and gasket for transferring the pressure on the inside of the head through the gasket to the walls of the bottle.
  • the entire closure should be capable of being removed as a unit while being supported from the bottle.
  • the head, gasket and means for transferring the pressure on the head to the bottle should, when being opened, preferably remain in the relative positions they occupy when they are in closed position and should be protected from injury while opening and when in open position.
  • Figure 1 is a view in front elevation of my improved closure applied to an access hole in a side wall Ill and an end portion II which defines the opening. That drum end II is provided with an inwardly projecting upset portion l2 which has upon its inner surface threads lS-e'xtending inwardly from the drums end-face, a cylindrical surface i4 extending inwardly from those threads towards the drum's opposite end (not shown) and of smaller'diameter than threads i3, and a constricting shoulder it at the base of surface- It having the still smaller internal diameter indicated.
  • upset portion l2 which has upon its inner surface threads lS-e'xtending inwardly from the drums end-face, a cylindrical surface i4 extending inwardly from those threads towards the drum's opposite end (not shown) and of smaller'diameter than threads i3, and a constricting shoulder it at the base of surface- It having the still smaller internal diameter indicated.
  • FIG. 1 the closure of my invention is there shown as being appliedto this opening in drum end II.
  • This closure comprises a head l6 (see Figures 2 and 3), an annular ring I! for retaining the head, a gasket i8 interposed between the head and ring. and an external ring-like door member or cap l9.
  • This closure cap or door member I! is hinged to drum head H by means of spaced lugs 20 on the cap. associated spaced lugs 2
  • the closure head i6 has a thickness sufficient to withstand the maximum pressure within the drum III.
  • This head I6 is provided with a flange portion 23 adjacent its inner or leading face 21, the outer circumferential face 25 of which flange portion is slightly conically contracting toward the inner face 24 and fits closely within the cylindrical surface ll of the drum and i I.
  • the head's opposite or trailing portion is encircled by the represented circumferential recess which extends from flange 23 to the outer or trailing face 26 of the head.
  • the head i6 rests against shoulder ii of the drum end II which stops its further movement into the drum.
  • a stud bolt 21 Fastened centrally to the outer or trailing face 26 of the head is a stud bolt 21 which extends axially outward therefrom, as shown in Figure 3, for a purpose later to be explained.
  • the closures ring I1 is provided on its outer circumferential surface with threads 28 which engage the threads i 3 provided on the inner portion I2 of the drum end ii.
  • the inner or leading face 29 of ring l1 has an. outer diameter that permits it to enter the drum head with a close fit and the ring H has a radial thickness adjacent said face substantially equal to the radial depth of the gasket i8 in head It.
  • the outer or trailing face of this ring i1 is provided beyond the ends of the threads 28 with a circumeferential face 30 which extends beyond the end of the drum end ii and into the door-member cap i9 as shown in Figure 2.
  • closure ring I'I has welded thereon a conicallyformed plate 3i having a central hole 32 through which the stud bolt '21 from head It projects.
  • ring I! and head 16 areat all times maintained in such spaced relation as to retain the gasket l8 assume and a gasket ring 85 between the ring i1 and the head flange 23.
  • a hand bar 31 Fastened to plate 8i and spaced therefrom by legs 36, is a hand bar 31 by which the annular ring ll may be rotated and screwed either out of or into the drum end ii. .
  • This bar and its supporting legs 36 extend in the manner shown through closure cap l9s central opening 39.
  • This closure cap or ring-like door member i9 is further provided with threads 38 which are identical (of the same diameter and size) with the threads i3 in the drum'end ii and 'which'mesh with the threads 28 on the ring ll.
  • Threads 38 which are identical (of the same diameter and size) with the threads i3 in the drum'end ii and 'which'mesh with the threads 28 on the ring ll.
  • extension portions 40a through which adjusting screws ti project to abut the end face of drum head H as shown in Figure 2.
  • These screws ti are set to maintain the inner face of the .cap in such spaced relation with the outer face of the drum .end ii that the threads it of drum end ii are continuous with the threads 38 in the door member can i9 when the cap is in the closed, aligned position of Figure 2.
  • may be locked against turning by a jamb nut (not shown) or other well known means. I
  • closure ring l1 By so spacing the drum end and door member closure cap, the closure ring l1 may be withdrawn from the drum end into the cap by screwing it outwardly by means of the hand bar 31.
  • a lug 52 which is welded to the drum and ii cooperates with a lug 43 on the ring-like cap E9 to guide that door-member cap into alignment with the drum end when the cap is closed.
  • a spring loaded latch M is provided on the drum end to engage the flange 40 of .doormember cap it when the latch has the position of Figures 1-2. Latch rotation through 90 deg. releases this engagement and frees cap I 9 for withdrawal.
  • the nuts 33 of stud bolt 21 may be removed and closure ring I! together with closure plate 3i then withdrawn over the stud and from the closure head IS.
  • the gasket ring 35 and gasket It may now be removed and replaced.
  • gasket i8 is radially expandable into sealing contact with the openings side wall when axially compressed between closure head l6 andring II, as in the position of Figure'2; that as the ring is screwed by bar 31 into the opening wall threads, the leading end 24 of head l6 abuts vessel liis constricting shoulder i so that further advancement of ring ll builds up the named axial 4 compression on and radial expansion of gasket ill to establish the closure seal; and that high pressure subsequently generated within vessel I0 urges closure head l6 more strongly against gasket i8 (backed by closure ring il therebehind), thereby intensifying the seal in desired manner.
  • a closure device for a pressure-vessel opening that comprises a closure head enterable into the opening, a gasket carried by the head, a closure ring trailing the gasket and removably secured to the head, mating threads on the closur rings periphery and on the vessel openings interior surface, an element fastened to and trailing the closure ring for imparting thereto rotation which screws the ring into and out of the vessel opening, and means in said opening to limit entering advancement of the closure head so that inward screwing of the closure ring will compress the gasket
  • a closure device for a pressure-vessel opening that comprises a closure head enterable into the opening. a gasket surrounding said head behind a leading flange thereon, a closure ring surrounding the trailing head portion behind said gasket, tie means retaining said head and ring together with the gasket therebetween, mating threads on the closure rings periphery and on the vessel openings interior surface for enabling the ring to be screwed into and out of the opena ing by advancing and withdrawing rotation thereof, and means in the vessel opening to limit entering advancement of the closure head so that inward screwing of the closure ring will compress the gasket, the combination of an external ring-like door member hinged to the pressure vessel adjacent said opening so as to axially align therewith when closed thereagainst and at other times to be swingable outwardly completely away from the opening, and threads on the inside of said ring-like door member for engaging the threads on said closure ring whereby that closure ring, head and gasket may as an assemblage be screwed out of
  • a' closure device for a pressure-vessel opening that comprises a closurahead enterable into the opening. a gasket surrounding said head behind a, leading flange thereon, a closure ring surrounding the trailing head portion behind said gasket, tie means retaining said head and ring together with the gasket therebetween, mating rlphery and on the vessel openings interior, sur ace for enabling the ring to be screwed into and out of the opening by advancing and withdrawing rotation thereof. and means in the vessel opening to limit entering advancement of said head so that inward. screwing of the closure ring will compress the gasket.
  • annular gasket in-said recess encircling said 5 head and radiallyexpandable into sealing contact with the inner surface of said Opening when axially compressed "against said flange; a closure ring axially fittable over the recessed portion of said headagainst said gasket to eil'ect said compression and being enterable into said I opening with said head in trailing relation thereto; a plate fastened to the trailing end of said ring and ahand bar fastened to-the outer-"side 'of saidv plate; central tie means between said head with said ring plate for retaining said head and ring together with the gasket therebetween; mating threads on said rings periphery and on said openings interior surface for enabling said -ring to be screwed into and out of'said opening by advancing and withdrawing rotations imparted thereto through said bar; a constriction positioned in said opening to limit entering advancement of said head so that inward screwing of said ring will compress said gasket and
  • a closure head enterable into said opening and having on its leading portion a circumferential flange axially 'adjoined on the head's trailing portion by a circumferential recess for the reception of a gasket;
  • a closure head enterable into said opening,-a gasket surrounding said head behind a leading flange thereon, a closure ring surrounding the trailing head portion behind said gasket, tie means retaining said head and ring together with the .gasket therebetween, mating threads on said rings periphery and on said openings interiorlsurface for enabling said ring to be screwed into and out of said opening by advancing and withdrawing rotation thereof,
  • a closure for an access opening in a pressure vessel the combination of a closure head openings side wall for enabling said ring to be screwed into and out of said opening by appropriate rotation of the ring; a constricting shoulder positioned in said opening to limit entering advancement of said head so that inward screwing of the ring will compress said gasket and seal the opening as aforesaid while outward screwin of the ring will release and break the seal; means for retaining said head and ring together with the gasket therebetween even after these closure parts are withdrawn from said opening; an external closure cap movably supported bythe vessel for placement into or out of alignment with said opening; and threads in said cap for engaging the threads on said ring whereby the ring,
  • head and gasket may be withdrawn from said opening into said cap and removed therewith from said opening.
  • aclosure head enterable into said opening and provided with a leading circumferential flange and a trailing circumferential recess; an annular gasket in said recess in abutment with said flange; a closure ring axially fittable over the recessed head portion enterable into said opening and having in its against said gasket and enterable into sald openprotruding from the trailing portion of said ring for imparting rotation thereto; a constricting shoulder positioned in said opening to limit en tering advancement of said head so that inward screwing of said ring will compress said gasket and seal said opening: means for retaining said.
  • a closure for an access opening in a high pressure vessel the combination of helical threads on the opening interior extending axially into the opening; a cylindrical surface on said interior axially beyond the inner ends of said 35 threads and having a diameter no greater than that which the thread tops define; a constricting shoulder at the inner end of said surface defining a still smaller diameter; a removable cylindrical head to close said opening having an inner flange portion fitting into said surface and engaging said constricting shoulder when in closed position and also having an outer, smaller portion forming a circumferential gasket recess adjacent said cylindrical surface; a removable closure ring hav- 1 ing an inner portion formed axially over said head's smaller portion into said gasketrecess and having an outer Portion pr tded with helical threads engageable with saidthreads on said openings interior;
  • the cap being hinged to said vessel adjacent said access opening so as to swing into axial alignment therewith when in closed position, the inside of said wall having threads mating those on, said opening interior whereby the closure ring, head and gasket may as an assemblage be screwed out of said'opening into said cap and then swung away from the opening with the cap.
  • a closure head enterable into said opening and having on its leading portion a circumferential flange axially adjoined on the head's trailing portion'by a, circumferential recess for the reception of agaskety an annular gasket in said recess encircling said head and radially expandable into sealing contact with the inner surface of said opening when axially compressed against said flange; a closure ring axially fittableover said recessed head portion against said gasket to efl'ect said compression and enterable into said opening with said helical threads of the 9 head in trailing relation thereto; mating threads on said rings periphery and on said opening's inner surface for enabling said ring to be screwed into and out of said opening by advancing and withdrawing rotation of the ring; a constriction positioned in said opening to limit entering advancement of said head so that inward screwing of said ring will compress said
  • the ,cap being hinged to said vessel adjacent said access opening so as to swing into axial alignment therewith when in closed position; the inside of said wall having threads mating those on said opening interior; and set screws carried by said cap engaging said vessel around- 4 whereby the threaded ring, head and gasket may as an assemblage be screwed out of said opening into said cap and then swung away from the opening with the cap.
  • a closure head enterable into said opening and having on its leading portion a circumferential flange axially adjoined on the head's trailing portion by a circumferential recess for the reception of a gasket; an annular gasket in said recess encircling said head and radially expandable into sealing contact with the inner surface of said opening when said opening; a cap with a cylindrical wall hinged .to the vessel adjacent said access opening so as to axially align therewith when in closed position.

Description

Feb. 10, 1948. M. P. WALL SCREW-THREADED PIVOTED CLOSURE 'Filed Nov. 8, 1946 INVENTOR.
Marion Pryor Wall Patented Feb. 10, 1948 UNITED STATES PATENT OFFICE v 2,435.913 SCREW-THREADED PIVOTED cnosrma Marion P. Wall, Lookout Mountain, Tenn., as-
signor to Combustion Engineering Company, Inc., New York, N. Y., a corporation of Delaware Application November 8, 1948. Serial No. 708,607 13 Claims. (Cl. 220-305) when the dry ice becomes fluid. .The closure includes a head capable of resisting the maximum pressure within the bottle, a gasket for effectively sealing the space between the head and bottle, and means associated with the head and gasket for transferring the pressure on the inside of the head through the gasket to the walls of the bottle.
For quick opening and closing, the entire closure should be capable of being removed as a unit while being supported from the bottle. The head, gasket and means for transferring the pressure on the head to the bottle should, when being opened, preferably remain in the relative positions they occupy when they are in closed position and should be protected from injury while opening and when in open position.
It is an object of this invention to provide such an improved closure for the above and other pressure vessels.
Other objects and advantages will become apparent as the description hereof proceeds.
An illustrative form of the invention is shown by the accompanying drawings wherein:
Figure 1 is a view in front elevation of my improved closure applied to an access hole in a side wall Ill and an end portion II which defines the opening. That drum end II is provided with an inwardly projecting upset portion l2 which has upon its inner surface threads lS-e'xtending inwardly from the drums end-face, a cylindrical surface i4 extending inwardly from those threads towards the drum's opposite end (not shown) and of smaller'diameter than threads i3, and a constricting shoulder it at the base of surface- It having the still smaller internal diameter indicated.
Referring next to Figures 1-2-3, the closure of my invention is there shown as being appliedto this opening in drum end II. This closure comprises a head l6 (see Figures 2 and 3), an annular ring I! for retaining the head, a gasket i8 interposed between the head and ring. and an external ring-like door member or cap l9. This closure cap or door member I!) is hinged to drum head H by means of spaced lugs 20 on the cap. associated spaced lugs 2| on the drum, and a hinge bolt 22 extending through holes within lugs in the usual manner. 7
The closure head i6 has a thickness sufficient to withstand the maximum pressure within the drum III. This head I6 is provided with a flange portion 23 adjacent its inner or leading face 21, the outer circumferential face 25 of which flange portion is slightly conically contracting toward the inner face 24 and fits closely within the cylindrical surface ll of the drum and i I.
The head's opposite or trailing portion is encircled by the represented circumferential recess which extends from flange 23 to the outer or trailing face 26 of the head. When in the position shown in Figure 2 the head i6 rests against shoulder ii of the drum end II which stops its further movement into the drum. Fastened centrally to the outer or trailing face 26 of the head is a stud bolt 21 which extends axially outward therefrom, as shown in Figure 3, for a purpose later to be explained.
The closures ring I1 is provided on its outer circumferential surface with threads 28 which engage the threads i 3 provided on the inner portion I2 of the drum end ii. The inner or leading face 29 of ring l1 has an. outer diameter that permits it to enter the drum head with a close fit and the ring H has a radial thickness adjacent said face substantially equal to the radial depth of the gasket i8 in head It. The outer or trailing face of this ring i1 is provided beyond the ends of the threads 28 with a circumeferential face 30 which extends beyond the end of the drum end ii and into the door-member cap i9 as shown in Figure 2.
As shown in Figure 3, the outer or trailing end of closure ring I'I has welded thereon a conicallyformed plate 3i having a central hole 32 through which the stud bolt '21 from head It projects.
' By means of nuts 33 and washer 34 the plate 3i,
ring I! and head 16 areat all times maintained in such spaced relation as to retain the gasket l8 assume and a gasket ring 85 between the ring i1 and the head flange 23. Fastened to plate 8i and spaced therefrom by legs 36, is a hand bar 31 by which the annular ring ll may be rotated and screwed either out of or into the drum end ii. .This bar and its supporting legs 36 extend in the manner shown through closure cap l9s central opening 39.
The inner circumferential face of this closure cap or ring-like door member i9 is further provided with threads 38 which are identical (of the same diameter and size) with the threads i3 in the drum'end ii and 'which'mesh with the threads 28 on the ring ll. At circumferentially spaced points around door member cap is are extension portions 40a through which adjusting screws ti project to abut the end face of drum head H as shown in Figure 2. These screws ti are set to maintain the inner face of the .cap in such spaced relation with the outer face of the drum .end ii that the threads it of drum end ii are continuous with the threads 38 in the door member can i9 when the cap is in the closed, aligned position of Figure 2. Once set in proper position each screw 4| may be locked against turning by a jamb nut (not shown) or other well known means. I
By so spacing the drum end and door member closure cap, the closure ring l1 may be withdrawn from the drum end into the cap by screwing it outwardly by means of the hand bar 31. A lug 52 which is welded to the drum and ii cooperates with a lug 43 on the ring-like cap E9 to guide that door-member cap into alignment with the drum end when the cap is closed.
After the closure ring H has been withdrawn from the drum end ii and screwed back into the door-member cap i9 it will occupy a position as shown in Figure 3. Since stud bolt 21 holds the ring I I and head it together the entire assembled head it, ring i'i and gasket it are drawn into the ring-like cap it in the same relative positions (of Figure 2) that they occupied in the drum end. As the door-member cap is swung open about hinge bolt 22, as shown in Figure 3, the threads and gasket thus are protected from injury by the cap and are retained in position to be screwed back into the drum end when the ring-like cap is again .closed against the drum end.
For holding the external closure cap i 9 in properly aligned closed position while the closure ring i7 is being screwed from the cap into the drum end ii, a spring loaded latch M is provided on the drum end to engage the flange 40 of .doormember cap it when the latch has the position of Figures 1-2. Latch rotation through 90 deg. releases this engagement and frees cap I 9 for withdrawal. i
In order to replace the gasket iii in the closure assemblage, the nuts 33 of stud bolt 21 may be removed and closure ring I! together with closure plate 3i then withdrawn over the stud and from the closure head IS. The gasket ring 35 and gasket It may now be removed and replaced.
It will be evident from the foregoing that gasket i8 is radially expandable into sealing contact with the openings side wall when axially compressed between closure head l6 andring II, as in the position of Figure'2; that as the ring is screwed by bar 31 into the opening wall threads, the leading end 24 of head l6 abuts vessel liis constricting shoulder i so that further advancement of ring ll builds up the named axial 4 compression on and radial expansion of gasket ill to establish the closure seal; and that high pressure subsequently generated within vessel I0 urges closure head l6 more strongly against gasket i8 (backed by closure ring il therebehind), thereby intensifying the seal in desired manner.
It will be further evident that a withdrawal of closure ring I! by reverse rotation in the opening side wall threads releases the gasket compression-and breaks the closure seal; that continued withdrawing rotation of the ring transfers the ring-head-gasket assemblage into the threaded closure cap i9 aligned with the vessel opening as in Figures 1-2; and that outward swinging of that door-member can about hinge bolt 22 bodily transfers the named closure parts to the position of Figure 3 where those parts are effectively protected by the ring-like cap against mechanical injury and held in immediate readiness for reinsertion into the vessel opening.
What I claim is:
1. In a closure device for a pressure-vessel opening that comprises a closure head enterable into the opening, a gasket carried by the head, a closure ring trailing the gasket and removably secured to the head, mating threads on the closur rings periphery and on the vessel openings interior surface, an element fastened to and trailing the closure ring for imparting thereto rotation which screws the ring into and out of the vessel opening, and means in said opening to limit entering advancement of the closure head so that inward screwing of the closure ring will compress the gasket, the combination of an external ring-like door member movably supported by the pressure vessel for placement into or out of alignment with said opening and being formed to permit outward projection of said closure-rotating element therethrough, and threads on the inside of said ring-like door member for engaging the threads on said closure ring whereby that closure ring, head and gasket may as an assemblage be screwed out of the opening into the door member for movement away from the opening therewith and out of the door member back into the opening when it is desired to reclose and seal the pressure vessel.
2. In a closure device for a pressure-vessel opening that comprises a closure head enterable into the opening. a gasket surrounding said head behind a leading flange thereon, a closure ring surrounding the trailing head portion behind said gasket, tie means retaining said head and ring together with the gasket therebetween, mating threads on the closure rings periphery and on the vessel openings interior surface for enabling the ring to be screwed into and out of the opena ing by advancing and withdrawing rotation thereof, and means in the vessel opening to limit entering advancement of the closure head so that inward screwing of the closure ring will compress the gasket, the combination of an external ring-like door member hinged to the pressure vessel adjacent said opening so as to axially align therewith when closed thereagainst and at other times to be swingable outwardly completely away from the opening, and threads on the inside of said ring-like door member for engaging the threads on said closure ring whereby that closure ring, head and gasket may as an assemblage be screwed out of said opening into the door member for swinging away from the opening therewith and out of the door member back into the opening when it is desired to reclose and seal the pressure vessel.
"threads on said. closure rings ,8. In a' closure device ,for a pressure-vessel opening that comprises a closurahead enterable into the opening. a gasket surrounding said head behind a, leading flange thereon, a closure ring surrounding the trailing head portion behind said gasket, tie means retaining said head and ring together with the gasket therebetween, mating rlphery and on the vessel openings interior, sur ace for enabling the ring to be screwed into and out of the opening by advancing and withdrawing rotation thereof. and means in the vessel opening to limit entering advancement of said head so that inward. screwing of the closure ring will compress the gasket. the combination of an external door member having a circular rim and being hinged to the pressure vessel adjacent said opening so as to axially align therewith when closed thereagainst and at other times to be swingable outwardly completely away from the opening, and threads on the inside of said door member rim for engaging the threads on said closure ring whereby that closure ring, head and gasket may as an assemblage be screwed out of said opening into the door member for swinging away from the opening therewith and out of the door member back into the opening when it is desired to reclose and seal the pressure vessel.
4. In a closure for an opening in a pressure ment into or out ofalignment with said opening and being formed to permitoutward projection leading portion a circumferential flange axially adioined on the head's trailing portion by a circumierential recess for the reception of a gasket;
an annular gasket in-said recess encircling said 5 head and radiallyexpandable into sealing contact with the inner surface of said Opening when axially compressed "against said flange; a closure ring axially fittable over the recessed portion of said headagainst said gasket to eil'ect said compression and being enterable into said I opening with said head in trailing relation thereto; a plate fastened to the trailing end of said ring and ahand bar fastened to-the outer-"side 'of saidv plate; central tie means between said head with said ring plate for retaining said head and ring together with the gasket therebetween; mating threads on said rings periphery and on said openings interior surface for enabling said -ring to be screwed into and out of'said opening by advancing and withdrawing rotations imparted thereto through said bar; a constriction positioned in said opening to limit entering advancement of said head so that inward screwing of said ring will compress said gasket and seal the opening as aforesaid; an external closure cap movably, supported by said vessel for placement into or out of alignmentwith said opening and being formed to permit outward projection there- '40 cap movably supportedby said vessel for place-- through of said ring-rotating hand bar; and threads in said cap for engaging the threads on said closure ring-whereby that ring, head and gasket may as an assemblage be screwed out of said opening into said cap and out of said cap into said opening. a
'7. In a closure for an access opening in a pressure vessel, the combination of a closure head enterable into said opening and having on its leading portion a circumferential flange axially 'adjoined on the head's trailing portion by a circumferential recess for the reception of a gasket;
' an annular gasket in said recess encircling said therethrough of said ring rotating member, and
threads in said cap for engaging the threads on said closure ring whereby that ring, head and gasket may as an assemblage be screwed out of said opening into said cap and out of said cap into said opening.
5. In a closure for an opening in a pressure vessel, the combination of a closure head enterable into said opening,-a gasket surrounding said head behind a leading flange thereon, a closure ring surrounding the trailing head portion behind said gasket, tie means retaining said head and ring together with the .gasket therebetween, mating threads on said rings periphery and on said openings interiorlsurface for enabling said ring to be screwed into and out of said opening by advancing and withdrawing rotation thereof,
. means in said opening to limit entering advarrcement of said head so that inward screwing of the ring will compress said gasket and seal the opening, an external closure cap hinged to said vessel adjacent the opening so as to axially align therewith when closed thereagainst and to be swinghead, and radially expandable into sealing contact with the openings side wall and the head whenaxially compressed against said flange; a closure ring axially flttable over said recessed head body against said gasket to effect said com- 3 pression and enterable into said opening with said head in trailing relation thereto; mating threads on said rings periphery and on said able outwardly completely away from the opening, and threads in said cap for engaging the threads on said closure ring whereby that ring; head and gasket may as an assemblage be screwed out of said opening into said cap and out of said cap into said opening.
6. Ida closure for an access opening in a pressure vessel, the combination of a closure head openings side wall for enabling said ring to be screwed into and out of said opening by appropriate rotation of the ring; a constricting shoulder positioned in said opening to limit entering advancement of said head so that inward screwing of the ring will compress said gasket and seal the opening as aforesaid while outward screwin of the ring will release and break the seal; means for retaining said head and ring together with the gasket therebetween even after these closure parts are withdrawn from said opening; an external closure cap movably supported bythe vessel for placement into or out of alignment with said opening; and threads in said cap for engaging the threads on said ring whereby the ring,
head and gasket may be withdrawn from said opening into said cap and removed therewith from said opening.
8. In a closure for an access opening in a ressure vessel, the combination of aclosure head enterable into said opening and provided with a leading circumferential flange and a trailing circumferential recess; an annular gasket in said recess in abutment with said flange; a closure ring axially fittable over the recessed head portion enterable into said opening and having in its against said gasket and enterable into sald openprotruding from the trailing portion of said ring for imparting rotation thereto; a constricting shoulder positioned in said opening to limit en tering advancement of said head so that inward screwing of said ring will compress said gasket and seal said opening: means for retaining said. l0 head and ring together with the gasket there- 1 between even after these closure parts arewithdrawn from said opening; an external cap having an open to through which said ring-rotating means extends and being movably supported by the vessel for placement into or out oralignment with said opening; andthread in said cap for engaging the threads on said ring whereby the ring. head and gasket may be withdrawn from said opening into said cap and removed therewith from said opening.
9. Ina closure for an access opening in a high pressure vessel, the combination of threads on said openings interior extending from the outside axially thereinto; a cylindrical interior surface axially beyond said threads within said opening and being of a diameter no greater than-that which the thread tops define; a constricting shoulder at the inner en of said cylindrical surface deflning a still smaller diameter; a cylin- 39 drical head removably enterable into said opening to close same having an inner flangeportion fitting into said surface and engaging said constricting shoulder when in closed position and also having an outer smaller portion forming 'a circumferential gasket recess adjacentsaid cy- I lindrical surface; a removable closure ring having an inner portion formed to fit axially over said head's smaller portion'into said gasket recess and having an outer portion provided with 40 threads engageable with said threads on said openings interior;'a, gasket in said recess compressible between said ring and said head's inner shoulder portion for sealing contact vwith the openings cylindricalsurface; means fastened to said ring for imparting thereto rotation which screws the ring into and out of said opening; means fastened to said head and'to said'ring to 'maintaln said head and said ring in axially spaced relation with said gasket therebetween as aforesaid and a cap having a wall hinged to the vessel adjacent the access opening so as to swing the cap into axial alignment therewith when in closed position, the insideof said wall having threads of the same diameter and size as the threadson said vessel whereby the ring. head and gasket may be rotation of the threaded ring be withdrawn from said opening into'said cap and then swung 'awayfrom said opening with the 4 cap. 10. In a closure for an access opening in a high pressure vessel. the combination of helical threads on the opening interior extending axially into the opening; a cylindrical surface on said interior axially beyond the inner ends of said 35 threads and having a diameter no greater than that which the thread tops define; a constricting shoulder at the inner end of said surface defining a still smaller diameter; a removable cylindrical head to close said opening having an inner flange portion fitting into said surface and engaging said constricting shoulder when in closed position and also having an outer, smaller portion forming a circumferential gasket recess adjacent said cylindrical surface; a removable closure ring hav- 1 ing an inner portion formed axially over said head's smaller portion into said gasketrecess and having an outer Portion pr tded with helical threads engageable with saidthreads on said openings interior; a gasket in said recess compressible between said ring and said head's inner flange portion for sealing contact with the opening's cylindrical surface; means fastened to said ring for imparting thereto rotation which screws the ring into and out of said opening; means fastened to said head and to said last means to maintain said head and said ring in axially spaced relation with saidgasket therebetween as v aforesaid; and a cap having an open top through which said ring rotating means extends and a wall hinged to the vessel adjacent the access opening so as to swing the cap into axial alignment therewith when in closed position, the outside of said wall having same diameter and size as the threads on said vessel whereby the ring, head and gasket may by rotation of the threaded ring be withdrawn'from said opening into said cap and then swung away from said opening with the cap. I 1 ll. In a-closure for an access opening in a pressure vessel. the combination of a closure head enterable into said opening and having on its leading portion a circumferential flange axially adjoined on the head's trailing portion by a circumferential recess for the reception of a gasket; 1 an annular gasket in said recess encircling said /head and radially expandable into sealing contact with the inner surface of said opening when axially compressed against said flange; a closure ring axially flttable over said recessed head portion against said gasket to effect said compression and enterable into said opening with said head in trailing relation thereto; mating threads on said rings periphery and on said openings inner surface for enabling said ring to be screwed into and out of said opening'by advancing and withdrawing rotation of the ring; a constriction positioned in said opening to limit entering advancement of said head sothat inward screwing of said ring will compress said gasket and seal the opening as aforesaid while withdrawing rotation of the ring will release and break the seal; means for retaining said head and ring together with the gasket therebetween even after these closure parts are withdrawn from said opening: and a cap with a cylindrical wall having an axial depth equal at le'ast'the 'sum of the axial depths of said ring and gasket. the cap being hinged to said vessel adjacent said access opening so as to swing into axial alignment therewith when in closed position, the inside of said wall having threads mating those on, said opening interior whereby the closure ring, head and gasket may as an assemblage be screwed out of said'opening into said cap and then swung away from the opening with the cap. I v
-12. In a. closure for an. access opening in a pressure vessel, the combination of a closure head enterable into said opening and having on its leading portion a circumferential flange axially adjoined on the head's trailing portion'by a, circumferential recess for the reception of agaskety an annular gasket in said recess encircling said head and radially expandable into sealing contact with the inner surface of said opening when axially compressed against said flange; a closure ring axially fittableover said recessed head portion against said gasket to efl'ect said compression and enterable into said opening with said helical threads of the 9 head in trailing relation thereto; mating threads on said rings periphery and on said opening's inner surface for enabling said ring to be screwed into and out of said opening by advancing and withdrawing rotation of the ring; a constriction positioned in said opening to limit entering advancement of said head so that inward screwing of said ring will compress said gasket and seal the opening as aforesaid while withdrawing rotation of the ring will release and break the seal; means for retaining said head and ring together with the gasket therebetween even after these closure parts are withdrawn from said openins; a cap with a cylindrical wall having a depth equal at least the sum\of the axial depths of said ring and gasket. the ,cap being hinged to said vessel adjacent said access opening so as to swing into axial alignment therewith when in closed position; the inside of said wall having threads mating those on said opening interior; and set screws carried by said cap engaging said vessel around- 4 whereby the threaded ring, head and gasket may as an assemblage be screwed out of said opening into said cap and then swung away from the opening with the cap.
10 axially compressed against said flange; a closure ring axially iittable over said recessed head portion against said gasket to effect said compression and enterable into said opening with saidhead in trailing relation thereto; mating after these closure parts are withdrawn from 13. In a closure for an access opening in a pressure vessel, the combination of a closure head enterable into said opening and having on its leading portion a circumferential flange axially adjoined on the head's trailing portion by a circumferential recess for the reception of a gasket; an annular gasket in said recess encircling said head and radially expandable into sealing contact with the inner surface of said opening when said opening; a cap with a cylindrical wall hinged .to the vessel adjacent said access opening so as to axially align therewith when in closed position. the inside of said wall having threads mating those on side opening interior; set screws carried by said cap engaging said vessel around the opening to space the cap with respect thereto so as to cause the mating threads in said cap and on said opening interior to be continuous; a lug fastened to said vessel adjacent the opening and supporting the cap when closed for aligning the axis of the cap with that of the access opening: and a spring loaded latch fastened to the vessel also adjacent said opening to engage the cap and hold said set screws against said vessel whereby the threaded ring, head and gasket may as an assemblage be screwed out of said opening into as said cap and out of said cap into said opening.
MARION P. WALL.
US708607A 1946-11-08 1946-11-08 Screw-threaded pivoted closure Expired - Lifetime US2435913A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600021A (en) * 1947-10-21 1952-06-10 Dry Ice Converter Corp Cover for pressure vessels
US2624488A (en) * 1947-11-07 1953-01-06 Dry Ice Converter Corp Cover for high-pressure vessels
US2877921A (en) * 1956-03-22 1959-03-17 Clyde D Grim Positive seal, quick opening cap for pressure vessels
US2954141A (en) * 1956-01-26 1960-09-27 Kramer Machine And Engineering Closure for pressure vessels
US3990605A (en) * 1973-11-28 1976-11-09 Omv Aktiengesellschaft Closure means for circular openings of large diameter
US9447909B2 (en) 2013-08-08 2016-09-20 Chromatic Industries, Inc. Connector assembly usable as a closure and to establish a fluid connection

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600021A (en) * 1947-10-21 1952-06-10 Dry Ice Converter Corp Cover for pressure vessels
US2624488A (en) * 1947-11-07 1953-01-06 Dry Ice Converter Corp Cover for high-pressure vessels
US2954141A (en) * 1956-01-26 1960-09-27 Kramer Machine And Engineering Closure for pressure vessels
US2877921A (en) * 1956-03-22 1959-03-17 Clyde D Grim Positive seal, quick opening cap for pressure vessels
US3990605A (en) * 1973-11-28 1976-11-09 Omv Aktiengesellschaft Closure means for circular openings of large diameter
US9447909B2 (en) 2013-08-08 2016-09-20 Chromatic Industries, Inc. Connector assembly usable as a closure and to establish a fluid connection

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