US2751101A - Airtight disc for crown caps - Google Patents

Airtight disc for crown caps Download PDF

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Publication number
US2751101A
US2751101A US306346A US30634652A US2751101A US 2751101 A US2751101 A US 2751101A US 306346 A US306346 A US 306346A US 30634652 A US30634652 A US 30634652A US 2751101 A US2751101 A US 2751101A
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United States
Prior art keywords
disc
crown
cap
annular portion
crown caps
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Expired - Lifetime
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US306346A
Inventor
Leclerc Georges
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BOUCHON COURONNE
DU BOUCHON COURONNE CROWN CORK Co Ste
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BOUCHON COURONNE
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/10—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
    • B65D41/12—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs

Definitions

  • These air tight discs are generally comprised of small cork discs. These discs can be hollowed out in the center and can be in the form of fiat or crown rings.
  • the placing of the discs is generally effected by machines in which the discs are piled one upon another, and at each passage of the crown cap through the machine one of the discs is displaced laterally and falls into the crown cap.
  • the disc owing to its circular shape and its hollowed out center has a tendency to be deformed under the effect of the pressure and to assume an elliptical form; with the result that the disc cannot place itself into the space provided in the crown cap, causing improper operation and necessitating the intervention of the operator.
  • the heretofore described improper operation is prevented by the use of a disc or sealing ring comprised of plastic material and having a thin diaphragm portion at its interior.
  • the diaphragm portion provides sufiicient rigidity in a transversal sense to the disc to ensure that it does not deform at the moment of being placed into the crown cap; in addition it insures air tightness and prevents the liquid contained in the bottle from coming into contact with the metallic surface of the crown cap.
  • plastic material and the manufacture of this disc by moulding ensures the obtaining of a regular thickness that is difiicult to obtain with cork.
  • Fig. 1 is a cross-sectional view of an air tight disc according to the present invention.
  • Fig. 2 is a cross-sectional view of a crown cap with air tight disc according to the present invention.
  • the disc obtained by moulding is comprised of a suitable plastic material possessing elastic qualities necessary for efficient sealing.
  • the disc or sealing ring is an integral unit comprised of a circular annular portion 1 having two axially spacedapart annular faces and the outside diameter of which corresponds to the circular space provided in the crown cap.
  • the disc comprises, at its center, a continuous 2,751,101 Patented June 19, 1956 central diaphragm portion 2 considerably thinner than the outer part but of substantially uniform thickness and lying in a single plane substantially halt-way between the faces of the annular portion throughout its entire extent.
  • Diaphragm portion 2 is suiiicient to prevent any deformation of the disc during its placing in position in the crown cap.
  • Diaphragm portion 2 suitably comprises certain solid spaced projections 3 which are circular for example and are spaced axially-inwardly from the faces of the annular portion, to prevent the diaphragm portion from coming into contact on all its surface with the interior bottom surface of crown cap 4 when the sealing ring is seated in the cap with its annular portion lying against the bottom and the skirt of the cap, the central cylindrical downwardly-projecting cup-shaped portion of the cap being accommodated in the central circular space of the sealing ring defined by the annular portion.
  • a plastic sealing ring comprising an integral unit having an outer annular portion defining a central circular space adjoining the skirt of the crown cap and adapted to lie between the bottom of the cap and the upper edge of the neck of the container upon which the cap is applied, and a continuous central diaphragm portion completely filling the space within the outer annular portion, said outer annular portion having two axially spaced-apart annular faces and said central diaphragm portion having a substantially uniform thickness which is substantially less than the axial dimension of said annular portion and said diaphragm portion lying in a single plane substantially half-way between the faces of the annular portion throughout its entire extent, said central diaphragm portion being provided with a plurality of solid spaced circular projections extending from at least the upper face thereof, said projections being spaced axially-inwardly from the faces of said annular portion to accommodate said central projecting portion of the crown cap in said

Description

June 19, 1956 G. LECLERC 2,751,101 AIR TIGHT DISC FOR CROWN CAPS Filed Aug. 26, 1952 In vemor United States Patent AlRTIG-HT DISC FOR cnowN cars Georges Leclerc, Viry-Chatillon, France, assignor to Societe Du Bouchon Couronne Crown Cork Company (France), Viry-Chatillon, Seine, France, a corporation of France Application August 26, 1952, Serial No. 306,346
Claims priority, application France September 3, 1951 1 Claim. (Cl. 215-40) The placing of air tight discs in the interior of crown caps for bottles for the purpose of effecting the hermetic sealing of said bottles is well known.
These air tight discs are generally comprised of small cork discs. These discs can be hollowed out in the center and can be in the form of fiat or crown rings.
The placing of discs of this nature is effected with difliculty.
The placing of the discs is generally effected by machines in which the discs are piled one upon another, and at each passage of the crown cap through the machine one of the discs is displaced laterally and falls into the crown cap.
The disc, owing to its circular shape and its hollowed out center has a tendency to be deformed under the effect of the pressure and to assume an elliptical form; with the result that the disc cannot place itself into the space provided in the crown cap, causing improper operation and necessitating the intervention of the operator.
According to the present invention, the heretofore described improper operation is prevented by the use of a disc or sealing ring comprised of plastic material and having a thin diaphragm portion at its interior. The diaphragm portion provides sufiicient rigidity in a transversal sense to the disc to ensure that it does not deform at the moment of being placed into the crown cap; in addition it insures air tightness and prevents the liquid contained in the bottle from coming into contact with the metallic surface of the crown cap. Finally, the use of plastic material and the manufacture of this disc by moulding ensures the obtaining of a regular thickness that is difiicult to obtain with cork.
In the attached drawings,
Fig. 1 is a cross-sectional view of an air tight disc according to the present invention.
Fig. 2 is a cross-sectional view of a crown cap with air tight disc according to the present invention.
The disc obtained by moulding is comprised of a suitable plastic material possessing elastic qualities necessary for efficient sealing.
The disc or sealing ring is an integral unit comprised of a circular annular portion 1 having two axially spacedapart annular faces and the outside diameter of which corresponds to the circular space provided in the crown cap. The disc comprises, at its center, a continuous 2,751,101 Patented June 19, 1956 central diaphragm portion 2 considerably thinner than the outer part but of substantially uniform thickness and lying in a single plane substantially halt-way between the faces of the annular portion throughout its entire extent.
Diaphragm portion 2 is suiiicient to prevent any deformation of the disc during its placing in position in the crown cap.
Diaphragm portion 2 suitably comprises certain solid spaced projections 3 which are circular for example and are spaced axially-inwardly from the faces of the annular portion, to prevent the diaphragm portion from coming into contact on all its surface with the interior bottom surface of crown cap 4 when the sealing ring is seated in the cap with its annular portion lying against the bottom and the skirt of the cap, the central cylindrical downwardly-projecting cup-shaped portion of the cap being accommodated in the central circular space of the sealing ring defined by the annular portion.
I claim:
In a crown cap having a bottom and a skirt and a central cylindrical downwardly-projecting cup-shaped portion, a plastic sealing ring comprising an integral unit having an outer annular portion defining a central circular space adjoining the skirt of the crown cap and adapted to lie between the bottom of the cap and the upper edge of the neck of the container upon which the cap is applied, and a continuous central diaphragm portion completely filling the space within the outer annular portion, said outer annular portion having two axially spaced-apart annular faces and said central diaphragm portion having a substantially uniform thickness which is substantially less than the axial dimension of said annular portion and said diaphragm portion lying in a single plane substantially half-way between the faces of the annular portion throughout its entire extent, said central diaphragm portion being provided with a plurality of solid spaced circular projections extending from at least the upper face thereof, said projections being spaced axially-inwardly from the faces of said annular portion to accommodate said central projecting portion of the crown cap in said central circular space with the projections in face contact with the lower surface of said cup-shaped portion, whereby said faces of said annular portion lie axially outwardly of all surfaces of said central diaphragm portion and said annular projections.
References Cited in the file of this patent UNITED STATES PATENTS 785,116 Perry Mar. 21, 1905 1,425,349 Taliaferro Aug. 8, 1922 1,931,595 Weguelin Oct. 24, 1933 2,428,782 Browne Oct. 14, 1947 2,543,775 Gora Mar. 6, 1951 2,561,294 Schuler July 17, 1951 FOREIGN PATENTS 671,270 Great Britain Apr. 30, 1952
US306346A 1951-09-03 1952-08-26 Airtight disc for crown caps Expired - Lifetime US2751101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1041508T 1951-09-03

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US2751101A true US2751101A (en) 1956-06-19

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FR (1) FR1041508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829790A (en) * 1952-10-15 1958-04-08 Albert M Fischer Bottle closures

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785116A (en) * 1904-03-11 1905-03-21 Edward L Perry Gasket or packing-ring and apron therefor.
US1425349A (en) * 1919-06-16 1922-08-08 Taliaferro Thomas Lucien Bottle closure
US1931595A (en) * 1931-05-16 1933-10-24 Waxed Papers Ltd Sealing disk for milk bottles and like containers
US2428782A (en) * 1941-06-18 1947-10-14 Katherine G Browne Receptacle and closure therefor
US2543775A (en) * 1949-04-01 1951-03-06 Gora Lee Corp Container closure
US2561294A (en) * 1948-03-24 1951-07-17 Parke Davis & Co Closure for multiple dose vials
GB671270A (en) * 1950-04-25 1952-04-30 Franz Wolff Improvements in or relating to closure caps for bottles and other like containers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US785116A (en) * 1904-03-11 1905-03-21 Edward L Perry Gasket or packing-ring and apron therefor.
US1425349A (en) * 1919-06-16 1922-08-08 Taliaferro Thomas Lucien Bottle closure
US1931595A (en) * 1931-05-16 1933-10-24 Waxed Papers Ltd Sealing disk for milk bottles and like containers
US2428782A (en) * 1941-06-18 1947-10-14 Katherine G Browne Receptacle and closure therefor
US2561294A (en) * 1948-03-24 1951-07-17 Parke Davis & Co Closure for multiple dose vials
US2543775A (en) * 1949-04-01 1951-03-06 Gora Lee Corp Container closure
GB671270A (en) * 1950-04-25 1952-04-30 Franz Wolff Improvements in or relating to closure caps for bottles and other like containers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829790A (en) * 1952-10-15 1958-04-08 Albert M Fischer Bottle closures

Also Published As

Publication number Publication date
FR1041508A (en) 1953-10-23

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