US2429151A - Pressure cooker closure - Google Patents

Pressure cooker closure Download PDF

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Publication number
US2429151A
US2429151A US647157A US64715746A US2429151A US 2429151 A US2429151 A US 2429151A US 647157 A US647157 A US 647157A US 64715746 A US64715746 A US 64715746A US 2429151 A US2429151 A US 2429151A
Authority
US
United States
Prior art keywords
stem
closure
receptacle
mouth
seating surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US647157A
Other languages
English (en)
Inventor
Myron J Zimmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ekco Products Co
Original Assignee
Ekco Products Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL65199D priority Critical patent/NL65199C/xx
Application filed by Ekco Products Co filed Critical Ekco Products Co
Priority to US647157A priority patent/US2429151A/en
Priority to GB19349/46A priority patent/GB617520A/en
Priority to FR930744D priority patent/FR930744A/fr
Priority to CH257359D priority patent/CH257359A/fr
Priority to GB29902/46A priority patent/GB617570A/en
Application granted granted Critical
Publication of US2429151A publication Critical patent/US2429151A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/0804—Locking devices
    • A47J27/0815—Locking devices where vessel and lid have adapted shapes to provide for the locking action
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/09—Safety devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
    • A47J27/09—Safety devices
    • A47J27/092—Devices for automatically releasing pressure before opening
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers

Definitions

  • This invention relates to closures for pressure cookers of the type wherein the rim of the closure is upwardly engageable with a downwardly facing seating surface within the cooker body.
  • the closure is supported at its center by a stem in upright relation to the outer surface of the closure and an overhead member adapted to rest on shoulders outside the cooker body across the mouth of the cooker, there being a bearing on the overhead member in which the stem is shiftable downwardly from a position wherein the rim of the closure is in engagement with the seating surface within the cooker body to space the closure and overhead member at such distance apart as to obtain clearance needed for moving the closure through the mouth of the cooker body toward and away from a position in which the closure is below said seatin surface.
  • the present invention accordingly contemplates the provision of means to insure tight sealing engagement of the closure with the cooker body to compensate for wear or inaccuracies in the parts.
  • this invention provides means of this character, including a pressure applying member movably carried by the overhead supporting member and having a camming relation with the stem to apply an upward pulling force on the stem whereby a sealing engagement between the rim of the closure and the seating surface within the cooker body is positively attained.
  • Fig. 1 is a side elevational view of a pressure cooker constructed in accordance with this invention, with parts removed and in section, and showing the closure in seated position.
  • Fig. 2 is an enlarged fragmentary vertical sectional View taken on line 22 of Fig. 1.
  • Figs. 3 and 4 are views similar to but each taken on a vertical plane at 90 degree variance to the plane of the sectional View in Fig. 2 and showing the relative positions of the cover rim and the seat with which it is engageable, when the control means'for effecting positive sealing action therebetween is in inoperative and operative positions, respectively.
  • l0 generally represents a receptacle of suitable shape and capacity, having a bottom wall II and an upright side wall l2 terminating at its upper edge in an inwardly projecting lip or flange forming the periphery 13 of the mouth of the receptacle.
  • the periphery I3 is non-circular soas to provide a mouth or opening at the top of the receptacle having a-maximum transverse dimension at substantially right angles to its minimum transverse dimension.
  • the closure indicated generally by the refer: ence numeral l4 comprises a disk-like member of such dimension and shape as to provide a peripheral rim l5 adapted to underlie a downwardly facing seating surface It formed by the underside of the flange or lip projecting inward ly from the upper edge of the receptacle side wall l2 and of smaller minimum transverse dimension than the maximum transverse dimension of the mouth.
  • Rim I5 supports a gasket ll of such material as to readily form a sealing engagement with the seating surface It and yet easily detachable therefrom when it is desired to remove the closure from the receptacle.
  • An overhead member l9 seated as at 20 and 2
  • the closure and the overhead member I9 are spaced a distance apart compatible with the clearance required therebetween to move the.
  • the upper end of the stem 23 is provided with an operating knob or handle" preferably in the form of an inverted metal cap 24 having its outer surface covered by a shell 25 of suitable heat insulating material, such as Bakelite, fixed to the stem 23 by means of a screw 26.
  • the cap 24 is conveniently joined to the stem 23 by having the edges of an opening in its base crimped to the upper end of the stem as shown in Figs. 3 and 4.
  • the portion of the stem located above the bearing 22 is embraced by a coil spring 21.
  • the closure When positioned as shown in Fig. 2, the closure may be tilted and lifted from the receptacle lengthwise of its longest axis, during which process the supporting member 19 is removed from the seats 29 and 2!.
  • the ferrule is formed with an axially depressed portion 34 in which the shoulder 33 in the cap 24 has guided movement in a fixed axial path.
  • the spring 27 preferably exerts a force only slightly in excess of the weight of the stem 23 and the parts held thereby, including the closure, so as to assure a relatively sensitive direct manual control of the stem. For this reason the spring 2'! is not sufficiently strong to lift the gasket l1 into pressure-sealed engagement with the seating surface within the receptacle in the event of any irregularit in the contour of the cooperating sealing surfaces of the closure and the receptacle, or slight variations in the seating of the supporting member at 2
  • control means comprising a slide mounted on the supporting member movable into interlocking engagement with the stem. As shown in Figs.
  • the slide comprises a knob 35 adapted to slide on the upper surface of the member I9 and to straddle the longitudinal edges 35 of an elongated slot formed in and extending lengthwise of said member I9, from which a vertical leg 31 of a pin projects downwardly for insertion through the slot aforesaid and a horizontal leg 38 extends radially inwardly from said vertical leg 31 and is supported below the member IQ for longitudinal sliding movement of the leg 38 through a bearing 39 on the underside of the member IS.
  • the inward end of the leg 38 is rounded to provide a nose adapted to enter a transverse bore 49 in the stem.
  • the bore 40 presents an upper surface slanting downward in the direction of stem- Ward movement of the leg 38 so as to be gradually lifted as the nose of the leg 38 is moved toward the position shown in Fig. 4.
  • the stem 23 is locked against rotation as Well as against downwardmovement whereby accidental depression of the operating knob is effectively avoided.
  • the control slide knob 35 is moved backward or into the position shown in Fig. 3 so as to free the stem for depression and rotation of, the closure for disposal in such relation to the widest axis of the receptacle mouth as to permit the edges of the closure rim to pass between the side edges of the receptacle mouth.
  • a receptacle having a mouth of non-circular contour, a downwardly facing seating surface within the receptacle and located peripherally of said mouth, a closure therefor of smaller minimum transverse dimension than the maximum transverse dimension of said mouth and having a rim adapted to underlie and have pressure sealed engagement with said seating surface, a stem fixed to the center of the closure and projecting axially upwardly therefrom, an overhead support cooperating with the receptacle to occupy a selected position across said mouth, means on said supporting member providing a bearing in which said stem is slidable axially, means for adjusting the stem axially toward and away from a position wherein the rim of the closure is in pressure sealing engagement with said seating surface including a control member slidably mounted on the supporting member for lineal movement transversely of the path of travel of the stem and means on the stem with which said control member is engageable in one direction of its movement to .lock said stem against movement away from a position wherein the rim of the closure is in
  • a receptacle having a mouth of non-circular contour, a downwardly facing seating surface within the receptacle and located peripherally of said mouth, a closure therefor of smaller minimum transverse dimension than the maximum transverse dimension of said mouth and having a rim adapted to underlie and have pressure sealed engagement with said seating surface, a stem fixed to the center of the closure and projecting axially upwardly therefrom, an overhead support cooperating with the receptacle to occupy a selected position across said mouth, means on said supporting member providing a bearing in which said stem is slidable axially, means for adjusting the stem axially toward and away from a position wherein the rim of the closure is in pressure sealing engagement with said seating surface including a control member slidably mounted on the supporting member for lineal movement transversely of the path of travel of the stem and a transverse bore in the stem presenting an upper surface slanting downward in the direction of stemward movement of said control member with which the latter is engageable in one direction of its
  • a receptacle having a mouth of non-circular contour, a downwardly facing seating surface within the receptacle and located peripherally of said mouth, a closure therefor of smaller minimum transverse dimension than the maximum transverse dimension of said mouth and having a rim adapted to underlie and have pressure sealed engagement with said seating surface, a stem fixed to the center of the closure and projecting axially upwardly therefrom, an overhead support cooperating with the receptacle to occupy a selected position across said mouth, means on said supporting member providing a bearing in which said stem is slidable axially, means for adjusting the stem axially toward and away from a position wherein the rim of the closure is in pressure sealing engagement with said seating surface including a control member slidably mounted on the supporting member for lineal movement transversely of the path of travel of the stem and means on the stem with which said control member is engageable in one direction of its movement to lock said stem against movement away from a position wherein the rim of the closure is in pressure sealing
  • a receptacle having a mouth of non-circular contour, a downwardly facing seating surface within the receptacle and located peripherally of said mouth, a closure therefor of smaller minimum transverse dimension than the maximum transverse dimension of said mouth and having a rim adapted to underlie and have pressure sealed engagement with said seating surface, a stem fixed to the center of the closure and projecting axially upwardly therefrom, an overhead support cooperating with the receptacle to occupy a selected position across said mouth, means on said supporting member providing a bearing in which said stem is slidable axially, an elongated slot in and extending lengthwise of said supporting member, a knob adapted to slide on the upper surfaceof said supporting member and to straddle the longitudinal edges of said slot, means for adjusting the stem axially toward and away from a position wherein the rim of the closure is in pressure sealing engagement with said seating surface including a pin having a vertical leg fastened to said knob and projecting downwardly therefrom and through said slot and
  • a receptacle having a mouth of non-circular contour, a downwardly facing seating surface within the receptacle and located peripherally of said mouth, a closure therefor of smaller minimum transverse dimensions than the maximum transverse dimension of said mouth and having a rim adapted to underlie and have pressure sealed engagement with said seating surface, a stem fixed to the center of the closure and projecting axially upward therefrom, an overhead support cooperating with the receptacle to occupy a selected position across said mouth, means on said supporting member providing a bearing in which said stem is slidable axially, means for adjusting the stem axially to move the rim of the closure int engagement with said seating surface, and a pressure applying member movably carried by said supporting member and engageable with said stem independently of said stem adjusting means to effect further axial movement of said stem and thereby force said rim into pressuresealing relation with said seating surface.
  • a, receptacle having a mouth of non-circular contour, a downwardly facing seating surface within the receptacle and located peripherally of said mouth, a closure therefor of smaller minimum transverse dimensions than the maximum transverse dimension of said mouth and having a rim adapted to underlie and have pressure sealed engagement with said seating surface, a stem fixed to the center of the closure and projecting axially upward therefrom, an overhead support cooperating with the receptacle to occupy a selected position across said mouth, means on said sup-- porting member providing a bearing in which said stem is slidable axially, means for adjusting the stem axially to move the rim of the closure into engagement with said seating surface, and a pressure applying member carried by said supporting member independently of said stem adjusting means, and having a camming engagement with said stem to eifect further axial movement of said stem and thereby force said rim into pressure-sealing relation with said seating surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cookers (AREA)
US647157A 1945-11-08 1946-02-12 Pressure cooker closure Expired - Lifetime US2429151A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL65199D NL65199C (ja) 1945-11-08
US647157A US2429151A (en) 1945-11-08 1946-02-12 Pressure cooker closure
GB19349/46A GB617520A (en) 1946-02-12 1946-06-28 Improvements in or relating to pressure cookers
FR930744D FR930744A (fr) 1945-11-08 1946-07-17 Perfectionnements à des dispositifs de fermeture pour marmites
CH257359D CH257359A (fr) 1945-11-08 1946-08-14 Marmite pour la cuisson sous pression.
GB29902/46A GB617570A (en) 1945-11-08 1946-10-07 Process of producing foils and films of polymeric n-vinyl pyrrole compounds

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US617570XA 1945-11-08 1945-11-08
US617520XA 1946-02-12 1946-02-12
US930744XA 1946-02-12 1946-02-12
US257359XA 1946-02-12 1946-02-12
US647157A US2429151A (en) 1945-11-08 1946-02-12 Pressure cooker closure

Publications (1)

Publication Number Publication Date
US2429151A true US2429151A (en) 1947-10-14

Family

ID=27534127

Family Applications (1)

Application Number Title Priority Date Filing Date
US647157A Expired - Lifetime US2429151A (en) 1945-11-08 1946-02-12 Pressure cooker closure

Country Status (3)

Country Link
US (1) US2429151A (ja)
CH (1) CH257359A (ja)
NL (1) NL65199C (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483319A (en) * 1947-04-30 1949-09-27 Ekco Products Company Pressure cooker cover fastener
US2572192A (en) * 1946-07-22 1951-10-23 Damrow Brothers Company Cooking apparatus
US2581995A (en) * 1947-10-29 1952-01-08 Ekco Products Company Pressure cooker cover support

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683102A (en) * 1926-10-23 1928-09-04 Filtrators Company Inc Container for extracting apparatus
US1759732A (en) * 1926-10-30 1930-05-20 Charlot Moise Ali Cooking pot of the self-closing type for the cooking of food and for other uses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683102A (en) * 1926-10-23 1928-09-04 Filtrators Company Inc Container for extracting apparatus
US1759732A (en) * 1926-10-30 1930-05-20 Charlot Moise Ali Cooking pot of the self-closing type for the cooking of food and for other uses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572192A (en) * 1946-07-22 1951-10-23 Damrow Brothers Company Cooking apparatus
US2483319A (en) * 1947-04-30 1949-09-27 Ekco Products Company Pressure cooker cover fastener
US2581995A (en) * 1947-10-29 1952-01-08 Ekco Products Company Pressure cooker cover support

Also Published As

Publication number Publication date
NL65199C (ja)
CH257359A (fr) 1948-10-15

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