US2546566A - Bottle cap - Google Patents

Bottle cap Download PDF

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US2546566A
US2546566A US109173A US10917349A US2546566A US 2546566 A US2546566 A US 2546566A US 109173 A US109173 A US 109173A US 10917349 A US10917349 A US 10917349A US 2546566 A US2546566 A US 2546566A
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bottle
cap
skirt
tangential
fins
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US109173A
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Herbert H Schweizer
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/16Snap-on caps or cap-like covers
    • B65D41/18Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics

Definitions

  • This invention relates to bottle caps for use in sealing bottles or containers such as are usuu ally employed for holding carbonated beverages, beer and the like.
  • the primary objects of the invention are: to provide a novel type of bottle cap which is particularly adapted for economical mass production by molding from suitable plastic or other materials; and, to provide such a cap having bottle gripping elements which are resiliently radially expandible to pass down over the usual retainer bead of the bottle neck as the cap is pressed thereon and then resiliently contract therebeneath to maintain the cap in place, but which are frangible when subjected to circum ferential or tangential deflection, thus permitN ting ready removal of the cap without the use of a special tool or opener.
  • Figure l represents a perspective View on an enlarged scale showing the upper portion of a usual carbonated beverage bottle having one of Claims. (Cl. 21542) 2 the caps of my invention operatively applied thereto;
  • Figure 2 a top plan View of one of the bottle caps of my invention, also on an enlarged scale;
  • Figure 3 an axial section on the line 3--3 of Figure 2, looking in the direction of the arrows, and showing the cap as it appears when applied to a bottle, the upper portion of the bottle also being shown in axial section; and,
  • Figure 4 a section on the line 4 4 of Figure 2, looking in the direction of the arrows.
  • the reference character B therein designates a usual bottle (of which only the upper portion is shown) such as is customarily employed to contain carbonated and other beverages.
  • a usual bottle of which only the upper portion is shown
  • the usual retainer beading or flange or lip b Disposed around the neck of said bottle adjacent its upper end is the usual retainer beading or flange or lip b, which functions as a projection around and under which the gripping portions or elements of a bottle cap may engage to maintain the cap in operative sealing relation over the opening or mouth of the bottle.
  • the bottle cap of my invention is preferably formed by usual molding or casting operations from a suitable plastic material having characteristics which permit it to be resiliently bent a substantial amount Without breaking or assuming a permanent set, but which is frangible when subjected to excessive bending or flexing.
  • the cap is formed from polystyrene, though such materials as Celluloid, cellulose acetate, synthetic resins and the like might also be employed.
  • Such a cap comprises a flat disc top l adapted yto extend across and cover the bottle mouth or opening, and may also advantageously include an integral depending annular skirt 2 adapted to extend axially over part of the bottle neck adjacent the mouth and protect same against contamination, While also strengthening the cap structure.
  • the cap may employ a sealing disc or gasket 3 of yielding material positioned concentrically therein beneath the disc top l to extend across the top or end of the bottle neck and provide a fluid tight and pressure tight seal for the mouth of the bottle, all in accordance With usual practice.
  • ns or bottle gripping elements Formed integrally with the cap, and in particular with the depending skirt 2 thereof where such a skirt is employed, are at least several relatively circumferentially spaced axially disposed ns or bottle gripping elements, each designated 4. These elements or ns project radially from the cap and preferably are disposed entirely below the level of the upper surface of the disc top I so that crates of bottles equipped with these caps may be stacked as heretofore, with each but the lowermost crate resting on the caps of the bottles within the crate therebeneath, without damaging any of said caps.
  • the radial dimensions or thicknesses of the respective fins 4 are substantial, being chosen in accordance with the character of the cap material to provide a substantial degree of resilient resistance to radial deilection, but to withstand without breaking such deflection as is required to permit the ⁇ gripping portions 5 to pass over the retainer beading and engage therebeneath as the cap is pressed onto a bottle. It is a iurther requirement of these fins il that their resilient radial gripping action beneath the beading b, after the cap is applied to the bottle, be at least suiicient to maintain the cap firmly in sealing relation on the bottle against the internal pressure normally exerted by the carbonated bottle contents.
  • the depending skirt 2 cooperates with the nns 4- by tieing same together adjacent their lower extremities and thus reinforcing the radial grip of the portions 5 on the bottle. Also such a skirt permits the axial zone or line of juncture 6 between the respective fins l and the cap to be of substantial axial extent and thus effectively maintains the several fins 4 against inadvertent axial misalignment during the capping process.
  • Each of the fins 4 is formed in such a manner that an excessive tangential force exerted thereon will cause it to be bent or deflected about its juncture with the cap and eventually to break along or adjacent to said junction or zone of attachment s.
  • the tangential dimension or thickness of the n be substantially reduced or diminished along or adjacent said junction or line of attachment 5, though in the preferred embodiment each of the ns i is formed throughout its entire extent of a uniform tangential r thickness which is substantially diminished relative to its radial dimension or thickness.
  • the tangential dimensions oi the iins 4 may of course vary in accordance with the strength and resiliency of the particular material used in fabricating the caps, it being required only that these dimensions be such as will render the respective fins irangible when they are bent or deiiected excessively in tangential directions.
  • any of the fins 4 will deect same about an axis generally defined by its axial line of juncture 5 with the skirt 2, and in moving about this axis the gripping portion 5 of the nn will swing away from the bottle neck toward a position beneath the skirt 2 without being obstructed in such movement by any portion of the bottle or cap.
  • the several fins are uniformly circumferentially spaced around the cap at intervals in excess of the maximum radial dimensions of the respective fins.
  • each iin may be swung or deilected tangentially through an arc of approximately ninety degrees, (if this should be necessary to break it away from the cap) and during the course of such movement the gripping portion 5 will be moved out of effective gripping engagement with the retainer beading b of the bottle even though the iin should fail to break away completely from the cap.
  • the cap may be removed from the bottle by an upward pull on said side.
  • ns uniformly spaced ns are employed, it has been found necessary to break away only ci" these in order to permit removal or the cap, though where a greater number of fins are employed it will accordingly prove necessary to break away a greater number thereof.
  • a molded bottle cap of frangiole but slightly resiiient plastic material comprising a :dat disc top adapted to extend across the opening in a bottle neck, an annular depending skirt integral therewith, and a plurality of relatively circumierentially spaced axially extending iins integral with and projecting radially from said skirt, the lower ends of said ns projecting beneath and radially inwardly from the lower edge of said skirt, said ns being oi sufficient radial thickness that their lower ends may be resiliently radially expended without breaking sufficiently to pass over the usual retainer beading of a bottle neck during application of the cap to a bottle and will thereafter contract beneath said beading' to maintain the cap in operative sealing relation on the bottle, and of such relatively smaller tangential thickness adjacent their juncture with said skirt as to be readily frangible in the Zone of said juncture when subjected to excessive tangential deflection.
  • a bottle cap as defined in. claim l including a sealing disc disposed concentrieally within said depending skirt egeinst the lower surface of Said tcp disc.
  • a bottle cap of ir-angible slightly resilient material comprising an annular skirt adapted to extend around the neck of a bottle, a sealing disc carried within said skirt to extend across the bottle mouth, and a plurality cf relatively circumierentially spaced fins integral with and projectn ing radially from said skirt, the lower ends of said ns projecting beneath and radially inwardly from the lower edge or" said skirt, said nns being of suliicient radial dimensions to be radially deflectible without breaking and to provide a strong resilient radial grip around the bottle neck, and o such relatively diminished tangential thickness in a zone adjacent their juncture with said skirt as to be readily rangible when subjected te excessive tangenti-al deflection,
  • a bottle cap of frangible slightly resilient material embodying a disc top, and a plurality oi relatively circumferentially spaced fins each integral with said cap along an axial line of june ture and projecting radially from said line of juncture, said lns depending axially from said cap and having bottle gripping portions projecting radially inwardly therefrom respectively at a common level spaced below said top, said nns respectively being oi sufficient radial thickness to be radially deiiectible without breaking and to provide a strong radially resilient grip around a bottle neck, and of such relatively smaller tangential thickness as to be frangible when subjected to not more than ninety degrees of tangential deflection.
  • a molded bottle cap of frangible slightly resilient material embodying a disc tcp adapted to extend across the mouth of a bottle, bottle gripping means on one side of said cap to engage beneath the retainer beading of the bottle neck, and at least one radially projecting n integral with said cap along an axial line of juncture on the side opposite said bottle gripping means, said fin depending axially from said cap and having a bottle gripping portion projecting radially inwardly therefrom at a location spaced below said tcp, said iin being of sufficient radial thickness to be stiiily radially deflectible without breaking and to resiliently radially press said gripping portion against said bottle neck, and of such relatively smaller tangential thickness as to be readily frangible when subjected to excessive tangential deflection.

Description

Patented Mar. 27, 1951 UNITED STATES' FYNT' OFFICE BGTTLE CAP Herbert H. Schweizer, Fort Collins, Colo.
Application August 8, i949, Serial No. 109,173
'i This invention relates to bottle caps for use in sealing bottles or containers such as are usuu ally employed for holding carbonated beverages, beer and the like.
The primary objects of the invention are: to provide a novel type of bottle cap which is particularly adapted for economical mass production by molding from suitable plastic or other materials; and, to provide such a cap having bottle gripping elements which are resiliently radially expandible to pass down over the usual retainer bead of the bottle neck as the cap is pressed thereon and then resiliently contract therebeneath to maintain the cap in place, but which are frangible when subjected to circum ferential or tangential deflection, thus permitN ting ready removal of the cap without the use of a special tool or opener.
Further incidental objects are: to so locate the bottle gripping elements that they are readily accessible for tangential deflection, by hand or by pressure against any handy fixed object, and will not obstruct the paths of deflection of adjacent gripping elements; to so form the bottle gripping elements that tangential deflection forces acting thereon will be transmitted with a substantial mechanical advantage to the zones of breakage of said elements; to provide such a cap Which presents no rough or sharp edges which might injure the hands of bottling plant workers and others, and in which the said gripping elements are disposed below the level of the top of the cap so that crates of bottles may be stacked one on the other in usual manner with each crate supported on the capsv of the bottles in the crate therebeneath, without damage to any of the caps; and to provide such caps which will require only slight medications in existing types of capping machines to adaptv same for efcient use therewith.
In this application I have shown and described only the preferred embodiment of my invention, simply by Way of illustration of the practice thereof, as by law required. However, I recognize that my invention is capable of other and different embodiments and that the several details thereof may be modied in various Ways, all Without departing from my said invention. Accordingly, the drawings and description herein are to be considered as merely illustrative and not as exclusive.
In the accompanying drawings:
Figure l represents a perspective View on an enlarged scale showing the upper portion of a usual carbonated beverage bottle having one of Claims. (Cl. 21542) 2 the caps of my invention operatively applied thereto;
Figure 2, a top plan View of one of the bottle caps of my invention, also on an enlarged scale;
Figure 3, an axial section on the line 3--3 of Figure 2, looking in the direction of the arrows, and showing the cap as it appears when applied to a bottle, the upper portion of the bottle also being shown in axial section; and,
Figure 4, a section on the line 4 4 of Figure 2, looking in the direction of the arrows.
Referring now in detail to the accompanying drawings, the reference character B therein designates a usual bottle (of which only the upper portion is shown) such as is customarily employed to contain carbonated and other beverages. Disposed around the neck of said bottle adjacent its upper end is the usual retainer beading or flange or lip b, which functions as a projection around and under which the gripping portions or elements of a bottle cap may engage to maintain the cap in operative sealing relation over the opening or mouth of the bottle.
The bottle cap of my invention is preferably formed by usual molding or casting operations from a suitable plastic material having characteristics which permit it to be resiliently bent a substantial amount Without breaking or assuming a permanent set, but which is frangible when subjected to excessive bending or flexing. In the preferred embodiment, the cap is formed from polystyrene, though such materials as Celluloid, cellulose acetate, synthetic resins and the like might also be employed.
Such a cap comprises a flat disc top l adapted yto extend across and cover the bottle mouth or opening, and may also advantageously include an integral depending annular skirt 2 adapted to extend axially over part of the bottle neck adjacent the mouth and protect same against contamination, While also strengthening the cap structure.
In accordance with usual practice, the cap may employ a sealing disc or gasket 3 of yielding material positioned concentrically therein beneath the disc top l to extend across the top or end of the bottle neck and provide a fluid tight and pressure tight seal for the mouth of the bottle, all in accordance With usual practice.
Formed integrally with the cap, and in particular with the depending skirt 2 thereof where such a skirt is employed, are at least several relatively circumferentially spaced axially disposed ns or bottle gripping elements, each designated 4. These elements or ns project radially from the cap and preferably are disposed entirely below the level of the upper surface of the disc top I so that crates of bottles equipped with these caps may be stacked as heretofore, with each but the lowermost crate resting on the caps of the bottles within the crate therebeneath, without damaging any of said caps.
The lower ends of these fins fi project axially beneath the disc top l and have bottle gripping portions projecting radially inwardly therefrom respectively at a common level spaced below said top. In the embodiment illustrated, said lower ends or gripping portions 5 project beneath and radially inwardly from the lower edge of the depending skirt 2, as will be readily apparent in each of Figures 1, 3 and 4.
The radial dimensions or thicknesses of the respective fins 4 are substantial, being chosen in accordance with the character of the cap material to provide a substantial degree of resilient resistance to radial deilection, but to withstand without breaking such deflection as is required to permit the` gripping portions 5 to pass over the retainer beading and engage therebeneath as the cap is pressed onto a bottle. It is a iurther requirement of these fins il that their resilient radial gripping action beneath the beading b, after the cap is applied to the bottle, be at least suiicient to maintain the cap firmly in sealing relation on the bottle against the internal pressure normally exerted by the carbonated bottle contents.
The depending skirt 2, as shown in the illustrated embodiment, cooperates with the nns 4- by tieing same together adjacent their lower extremities and thus reinforcing the radial grip of the portions 5 on the bottle. Also such a skirt permits the axial zone or line of juncture 6 between the respective fins l and the cap to be of substantial axial extent and thus effectively maintains the several fins 4 against inadvertent axial misalignment during the capping process.
Each of the fins 4 is formed in such a manner that an excessive tangential force exerted thereon will cause it to be bent or deflected about its juncture with the cap and eventually to break along or adjacent to said junction or zone of attachment s. In order to accomplish this it is necessary only that the tangential dimension or thickness of the n be substantially reduced or diminished along or adjacent said junction or line of attachment 5, though in the preferred embodiment each of the ns i is formed throughout its entire extent of a uniform tangential r thickness which is substantially diminished relative to its radial dimension or thickness.
The tangential dimensions oi the iins 4 may of course vary in accordance with the strength and resiliency of the particular material used in fabricating the caps, it being required only that these dimensions be such as will render the respective fins irangible when they are bent or deiiected excessively in tangential directions.
In the use of these bottle caps, same may be applied to conventional bottles by pressing them axially onto the necks oisaid bottles in conventional manner. If desired, existing types of bottling machines may be easily adapted for this purpose, it being required primarily that such machines be modied and Simplified to the extent necessary to cause them to omit the crimping function which is required in connection with usual metal crown caps.
Where it is desired to remove such a cap from its bottle, this may be readily accomplished without the aid of an opener or special tool, by applying sufficient tangential pressure against one or more relatively adjacent fins to break same away from the cap. Such pressure may be applied in any suitable manner, as by finger pressure where the tangential strength of the ns will permit this, or by pressure against any suitable solid object.
It will be apparent that such a tangential force applied to any of the fins 4 will deect same about an axis generally defined by its axial line of juncture 5 with the skirt 2, and in moving about this axis the gripping portion 5 of the nn will swing away from the bottle neck toward a position beneath the skirt 2 without being obstructed in such movement by any portion of the bottle or cap. In this connection it is pointed out that in the preferred embodiment the several fins are uniformly circumferentially spaced around the cap at intervals in excess of the maximum radial dimensions of the respective fins. Thus each iin may be swung or deilected tangentially through an arc of approximately ninety degrees, (if this should be necessary to break it away from the cap) and during the course of such movement the gripping portion 5 will be moved out of effective gripping engagement with the retainer beading b of the bottle even though the iin should fail to break away completely from the cap.
Due +o the substantial iai dimensions of the speci-ive li, tangentia pressure against the dially ou portions of each of t ese will be transmitted with a considerable mechanical advantage to its junmure t with the cap, to ia cilitate breaking away of the said fins with a minimum of pressure.
After sufficient number of relativeiy adjacent fins 4 are removed from one side oi the cap. as aorenientioned, the cap may be removed from the bottle by an upward pull on said side. In the illustrated embodiment of the invention wherein uniformly spaced ns are employed, it has been found necessary to break away only ci" these in order to permit removal or the cap, though where a greater number of fins are employed it will accordingly prove necessary to break away a greater number thereof.
Having thus described my invention, I claim:
l. A molded bottle cap of frangiole but slightly resiiient plastic material comprising a :dat disc top adapted to extend across the opening in a bottle neck, an annular depending skirt integral therewith, and a plurality of relatively circumierentially spaced axially extending iins integral with and projecting radially from said skirt, the lower ends of said ns projecting beneath and radially inwardly from the lower edge of said skirt, said ns being oi sufficient radial thickness that their lower ends may be resiliently radially expended without breaking sufficiently to pass over the usual retainer beading of a bottle neck during application of the cap to a bottle and will thereafter contract beneath said beading' to maintain the cap in operative sealing relation on the bottle, and of such relatively smaller tangential thickness adjacent their juncture with said skirt as to be readily frangible in the Zone of said juncture when subjected to excessive tangential deflection.
2. A bottle cap as defined in. claim l, including a sealing disc disposed concentrieally within said depending skirt egeinst the lower surface of Said tcp disc.
3. A bottle cap of ir-angible slightly resilient material comprising an annular skirt adapted to extend around the neck of a bottle, a sealing disc carried within said skirt to extend across the bottle mouth, and a plurality cf relatively circumierentially spaced fins integral with and projectn ing radially from said skirt, the lower ends of said ns projecting beneath and radially inwardly from the lower edge or" said skirt, said nns being of suliicient radial dimensions to be radially deflectible without breaking and to provide a strong resilient radial grip around the bottle neck, and o such relatively diminished tangential thickness in a zone adjacent their juncture with said skirt as to be readily rangible when subjected te excessive tangenti-al deflection,
4. A bottle cap of frangible slightly resilient material embodying a disc top, and a plurality oi relatively circumferentially spaced fins each integral with said cap along an axial line of june ture and projecting radially from said line of juncture, said lns depending axially from said cap and having bottle gripping portions projecting radially inwardly therefrom respectively at a common level spaced below said top, said nns respectively being oi sufficient radial thickness to be radially deiiectible without breaking and to provide a strong radially resilient grip around a bottle neck, and of such relatively smaller tangential thickness as to be frangible when subjected to not more than ninety degrees of tangential deflection.
5. A molded bottle cap of frangible slightly resilient material embodying a disc tcp adapted to extend across the mouth of a bottle, bottle gripping means on one side of said cap to engage beneath the retainer beading of the bottle neck, and at least one radially projecting n integral with said cap along an axial line of juncture on the side opposite said bottle gripping means, said fin depending axially from said cap and having a bottle gripping portion projecting radially inwardly therefrom at a location spaced below said tcp, said iin being of sufficient radial thickness to be stiiily radially deflectible without breaking and to resiliently radially press said gripping portion against said bottle neck, and of such relatively smaller tangential thickness as to be readily frangible when subjected to excessive tangential deflection.
HERBERT H. SCHWEIZER.
REFERENCES CITED The following references are of record in the iile of this patent:
UNITED STATES PATENTS Number Name Date 536,388 Northall Mar. 26, 1895 1,074,907 Spengler Oct. '7, 1913 1,338,224 Hunt Apr. 27, 1920 1,421,877 Weissheier July 4, 1922
US109173A 1949-08-08 1949-08-08 Bottle cap Expired - Lifetime US2546566A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643015A (en) * 1949-12-08 1953-06-23 Dev Res Inc Tamperproof container closure
US2698108A (en) * 1952-07-18 1954-12-28 Schwartz Irving Disposable bottle cap
US2720329A (en) * 1952-09-13 1955-10-11 Knapp Monarch Co Liquefier lid seal
US2966337A (en) * 1958-06-16 1960-12-27 Knapp Monarch Co Reaction propelled bulb for drawing lines through conduits
US3018012A (en) * 1958-06-06 1962-01-23 Gillette Co Pilfer-proof container and cap therefor
US5005720A (en) * 1989-02-24 1991-04-09 Continental White Cap, Inc. Plastic cap with breakaway tamper band and method of forming same
US20170259966A1 (en) * 2014-12-15 2017-09-14 Nestec S.A. A cap for a container and a package comprising such a cap
US11046490B2 (en) * 2016-06-06 2021-06-29 Societe Des Produits Nestle S.A. Container cap comprising tamper evidence means

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US536388A (en) * 1895-03-26 Thirds to j
US1074907A (en) * 1912-06-22 1913-10-07 Alfred Liebmann Closure.
US1338224A (en) * 1920-04-27 Bottle opener and closer
US1421877A (en) * 1920-06-19 1922-07-04 Weissheier William Nursing bottle and nipple protector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US536388A (en) * 1895-03-26 Thirds to j
US1338224A (en) * 1920-04-27 Bottle opener and closer
US1074907A (en) * 1912-06-22 1913-10-07 Alfred Liebmann Closure.
US1421877A (en) * 1920-06-19 1922-07-04 Weissheier William Nursing bottle and nipple protector

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643015A (en) * 1949-12-08 1953-06-23 Dev Res Inc Tamperproof container closure
US2698108A (en) * 1952-07-18 1954-12-28 Schwartz Irving Disposable bottle cap
US2720329A (en) * 1952-09-13 1955-10-11 Knapp Monarch Co Liquefier lid seal
US3018012A (en) * 1958-06-06 1962-01-23 Gillette Co Pilfer-proof container and cap therefor
US2966337A (en) * 1958-06-16 1960-12-27 Knapp Monarch Co Reaction propelled bulb for drawing lines through conduits
US5005720A (en) * 1989-02-24 1991-04-09 Continental White Cap, Inc. Plastic cap with breakaway tamper band and method of forming same
US20170259966A1 (en) * 2014-12-15 2017-09-14 Nestec S.A. A cap for a container and a package comprising such a cap
US10150597B2 (en) * 2014-12-15 2018-12-11 Nestec S.A. Cap for a container and a package comprising such a cap
US10351314B2 (en) 2014-12-15 2019-07-16 Nestec S.A. Cap for a container and a package comprising such a cap
US11046490B2 (en) * 2016-06-06 2021-06-29 Societe Des Produits Nestle S.A. Container cap comprising tamper evidence means

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