US3608774A - Drawn can for accommodating conventional openers - Google Patents

Drawn can for accommodating conventional openers Download PDF

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Publication number
US3608774A
US3608774A US1171A US3608774DA US3608774A US 3608774 A US3608774 A US 3608774A US 1171 A US1171 A US 1171A US 3608774D A US3608774D A US 3608774DA US 3608774 A US3608774 A US 3608774A
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seam
chime
sidewall
end closure
chime seam
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US1171A
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William T Saunders
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National Steel Corp
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National Steel Corp
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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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/12—Cans, casks, barrels, or drums
    • B65D1/14—Cans, casks, barrels, or drums characterised by shape
    • B65D1/16—Cans, casks, barrels, or drums characterised by shape of curved cross-section, e.g. cylindrical
    • B65D1/165—Cylindrical cans
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/08—Closures secured by folding or rolling and pressing

Definitions

  • FIG. I is a sectional view in the plane of the longitudinal axis of a can body embodying the invention
  • FIG. 2 is a sectional view in the plane of the longitudinal axis of a can embodying the invention.
  • FIGS. 3 and 4 are exploded partial views of an embodiment of the invention with conventional plow-type can openers.
  • a seam-free can body is fabricated to the configuration shown in FIG. I.
  • Can body 10 includes seam-free end wall 12, a sidewall 14 of uniform diameter equal to the diameter at the seam-free end wall 12, and a necked-in sidewall portion 16 of smaller diameter than sidewall 14 and integrally joined to sidewall 14 by ledge 18.
  • a chime edge 20 is provided at the open end of the can body I for forming a seam for attaching an end closure.
  • the can body can be drawn to the diameter of sidewall 14.
  • the necked-in sidewall 16, ledge 18 and chime edge 20 are then formed on can body which was initially drawn to uniform diameter.
  • the necked-in portion 16 is formed prior to the chime edge by use of either a funnel shaped hollow punch which gradually moves the metal inwardly around the full periphery or the necked-in portion can be formed by spinning of the container body.
  • the top edge is trimmed prior to necking-in. The trimmed edge is then flanged for forming the chime scam.
  • the necked-in portion 16 is fabricated to be elongated a predetermined amount in a direction parallel to the longitudinal axis 22, to accommodate the drive wheel of a plow-type opener.
  • End closure 24 is joined to can body 10 by chime seam 26.
  • End closure 24 may include an easy-open feature.
  • distance 28 between the bottom of chime seam 26 and ledge 18 is predetermined to be sufficient to accommodate the drive wheel of a conventional plow-type opener. It should be noted that the diameter of the chime seam 26 is substantially identical to the diameter of the uniform diameter sidewall 14 and the end wall I2 to facilitate straight rolling.
  • Plow-type opener 30 of FIG. 3 includes drive wheel 32 accommodated between chime seam 26 and ledge I8.
  • the knurled circumferential periphery 34 of drive wheel 32 drives the opener around the container by contact with chime seam 26 upon rotation of handle 36.
  • Rotatable cutting edge wheel 38 penetrates end closure 24.
  • drive wheel 42 is accommodated between the chime seam 26 and ledge I8.
  • the knurled cylindrical surface 44 has frictional contact with sidewall portion 16 between chime seam 26 and ledge 18. Knife edge 46 penetrates end closure 24.
  • drive wheel 42 moves the can opener about the periphery of the can.
  • a container of substantially the same diameter container at opposite longitudinal ends is provided to facilitate handling and machine dispensing is provided with a configuration which will accommodate conventional openers by making the chime seam 26 or sidewall 16 accessible as a drive surface.
  • end wall 24 may be a conventional end closure or an end closure with an integral opener. Prior to the invention, a seam-free body container with a conventional end closure was not practical.
  • End closure 24 and can body 10 can be fabricated from flat rolled steel or other suitable sheet metal, such as aluminum.
  • a suitable basebox weight for 12 ounce beverage container material is 75 pounds per basebox (thickness gage approximately 0.008 inch).
  • any of the conventional tin mill product for example from 55 to pounds per basebox (about 0.006 inch to about 0.005 inch) can be utilized.
  • the predetermined distance between the chime seam 26 and ledge 18 along the sidewall may vary depending on the size of the can. About one-half inch will be sufficient to accommodate substantially all conventional plow-type openers. A practical minimum for most consumer and commercial use cans is three-eighths inch. Ordinarily, the sidewall portion 16 will not be of greater length than about five-eighths inch. Considering other dimensions discussed below, the change in volume capacity of the container is held to an acceptable minimum.
  • the lateral thickness of the chime seam with flat rolled steel will vary from about 0.03 inch to about 0.06 inch. This is dependent on the thickness of the material, a double hook chime seam will include five layers of plate.
  • the difierence in diameters between the sidewall portion I6and the uniform diameter sidewall 14 is about equal to the lateral thickness of the chime seam.
  • the container of the present invention can be fabricated from flat rolled steel coated with a nonferrous protective material, such as tin, chromium, and the like.
  • the container can also be fabricated from other sheet material, such as aluminum.
  • the metals can be mixed for example, the can body can be steel and the end closure aluminum.
  • Thickness gages for aluminum vary from about 0.008 inch to about 0.015 inch. However, in general, for the conventional l2-ounce container, the nominal 2 11/16 inch diameter would be maintained for the uniform diameter portion and the nominal 2 9/16 .inch diameter maintained for the necked-in portion. A similar differential in nominal diameters can be maintained in differing size cans.
  • Conventional plow-type can openers are manufactured to operate with the above described chime seam thickness.
  • the structure of such can openers will not permit use with containers having no chime seam or a recessed chime seam without the accommodation for the drive wheel provided by the present invention. Attempting to use conventional openers on containers without this accommodation will result in damage to the opener in attempting to bend over the chime seam or to cut into the chime seam.
  • a two-piece can comprising:
  • a unitary can body of cylindrical configuration having a seam-free sidewall symmetrically spaced from a centrally located longitudinal axis of the cylindrical configuration and a seam-free end wall closing one end of the cylindrical configuration can body, and
  • the can body being of substantially uniform diameter from its seam-free end wall to within a predetermined distance longitudinally of the end closure chime seam and being neckedin to a smaller diameter over the predetermined distance between the chime seam and the uniform diameter portion of the can body.
  • the predetermined longitudinal distance of necked-in, smaller diameter sidewall having a length about one-half inch to permit reception of a drive wheel of a plow-type can opener between the end closure chime seam and the uniform diameter portion of the sidewall.
  • the sheet metal can body of claim 1 in which the chime seam has a lateral thickness of about one-sixteenth inch.
  • the sheet metal can of claim 1 having a differential between nominal diameters of the uniform diameter portion of the can body and the necked-in portion of the can body, such diametrical differential comprising about one-eighth inch.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

Provision is made for opening a seam-free body, two-piece can with conventional plow-type can openers while maintaining substantially the same diameter container at opposite longitudinal ends by forming an elongated necked-in portion at the open end of the seam-free body; the necked-in portion being of extended longitudinal length (approximately 1/2 -inch) to accommodate the drive wheel of a plow-type opener; and, the radial thickness and/or placement of the chime seam being such that the outer diameter of the chime seam is substantially equal to the outer diameter of the seam-free body.

Description

United States Patent William T. Saunders Weirton, W. Va.
Jan. 7, 1970 Sept. 28, 1971 National Steel Corporation Inventor Appl. No. Filed Patented Assignee DRAWN CAN FOR ACCOMMODATING CONVENTIONAL OPENERS 3 Claims, 4 Drawing Figs.
US. Cl 220/67 Int. Cl. B65d 7/42 Field of Search 220/67 References Cited UNITED STATES PATENTS 10/1939 Rheem 3,369,694 2/1968 Mauser et al. 220/67 3,376,997 4/ 1968 Kutka 220167 X 3,385,470 5/1968 Dorosz et al. 220/67 3,409,166 11/1968 Croce et al. 220/67 X Primary Examiner-Lloyd L. King Attorney-Shanley & ONeil DRAWN CAN FOR ACCOMMODATING CONVENTIONAL OPENERS This invention is concerned with two-piece sheet metal cans. In its more specific aspects, the invention is concerned with sheet metal cans having a seam-free, drawn, can body and an end closure joined to the can body by a chime seam.
The advantages in production costs and appearance of the two-piece can with its seam-free can body are well known. One disadvantage in attaching the end closure is that the chime seam will extend peripherally outwardly from the remainder of the drawn can body. To avoid this it has been necessary to recess the chime seam. This accommodation for the chime seam however creates other problems in the use of such containers by the consumer.
Prior to the present invention drawn containers for machine dispensers required easy-open end closures. There was no way of opening the can with conventional openers. The seam-free, integral, end wall cannot be opened since it provides no gripping surface and, the recessed chime seam provides no access for a conventional can opener, such as the plow-type opener. In brief, there has been no practical method for opening recessed chime cans without easy open end closures. Further, when an easy-open feature malfunctioned no failsafe feature for use of the conventional plow-type opener was provided.
It is the primary objective of the present invention to provide two-piece sheet metal can of substantially equal diameter at its opposite longitudinal ends which will accommodate conventional plow-type can openers. FIG. I is a sectional view in the plane of the longitudinal axis of a can body embodying the invention,
FIG. 2 is a sectional view in the plane of the longitudinal axis of a can embodying the invention, and
FIGS. 3 and 4 are exploded partial views of an embodiment of the invention with conventional plow-type can openers. In accordance with the invention, a seam-free can body is fabricated to the configuration shown in FIG. I. Can body 10 includes seam-free end wall 12, a sidewall 14 of uniform diameter equal to the diameter at the seam-free end wall 12, and a necked-in sidewall portion 16 of smaller diameter than sidewall 14 and integrally joined to sidewall 14 by ledge 18. At the open end of the can body I a chime edge 20 is provided for forming a seam for attaching an end closure.
The can body can be drawn to the diameter of sidewall 14. The necked-in sidewall 16, ledge 18 and chime edge 20 are then formed on can body which was initially drawn to uniform diameter. The necked-in portion 16 is formed prior to the chime edge by use of either a funnel shaped hollow punch which gradually moves the metal inwardly around the full periphery or the necked-in portion can be formed by spinning of the container body. The top edge is trimmed prior to necking-in. The trimmed edge is then flanged for forming the chime scam.
in accordance with the invention, the necked-in portion 16 is fabricated to be elongated a predetermined amount in a direction parallel to the longitudinal axis 22, to accommodate the drive wheel of a plow-type opener.
In FIG. 2 identical reference numerals are used where possible to show completed two-piece container of unitary can body 10 and added end closure. End closure 24 is joined to can body 10 by chime seam 26. End closure 24 may include an easy-open feature.
In carrying out the invention, distance 28 between the bottom of chime seam 26 and ledge 18 is predetermined to be sufficient to accommodate the drive wheel of a conventional plow-type opener. It should be noted that the diameter of the chime seam 26 is substantially identical to the diameter of the uniform diameter sidewall 14 and the end wall I2 to facilitate straight rolling.
Elongation of the necked-in portion to accommodate a plow-type opener is shown in more detail in the enlarged views of FIGS. 3 and 4 in which the numerical designation of similar parts has been kept the same as in FIGS. 1 and 2 where possible. Plow-type opener 30 of FIG. 3 includes drive wheel 32 accommodated between chime seam 26 and ledge I8. The knurled circumferential periphery 34 of drive wheel 32 drives the opener around the container by contact with chime seam 26 upon rotation of handle 36. Rotatable cutting edge wheel 38 penetrates end closure 24.
In the plow-type opener 40 of FIG. 4 drive wheel 42 is accommodated between the chime seam 26 and ledge I8. The knurled cylindrical surface 44 has frictional contact with sidewall portion 16 between chime seam 26 and ledge 18. Knife edge 46 penetrates end closure 24. Upon rotation of handle 48, drive wheel 42 moves the can opener about the periphery of the can.
As will be seen from FIGS. 2 through 4 a container of substantially the same diameter container at opposite longitudinal ends is provided to facilitate handling and machine dispensing is provided with a configuration which will accommodate conventional openers by making the chime seam 26 or sidewall 16 accessible as a drive surface.
With the invention, end wall 24 may be a conventional end closure or an end closure with an integral opener. Prior to the invention, a seam-free body container with a conventional end closure was not practical.
End closure 24 and can body 10 can be fabricated from flat rolled steel or other suitable sheet metal, such as aluminum. When can body 10 is fabricated from flat rolled steel coated with a nonferrous protectivelayer, such as tinplate, a suitable basebox weight for 12 ounce beverage container material is 75 pounds per basebox (thickness gage approximately 0.008 inch). However, any of the conventional tin mill product, for example from 55 to pounds per basebox (about 0.006 inch to about 0.005 inch) can be utilized.
The predetermined distance between the chime seam 26 and ledge 18 along the sidewall may vary depending on the size of the can. About one-half inch will be sufficient to accommodate substantially all conventional plow-type openers. A practical minimum for most consumer and commercial use cans is three-eighths inch. Ordinarily, the sidewall portion 16 will not be of greater length than about five-eighths inch. Considering other dimensions discussed below, the change in volume capacity of the container is held to an acceptable minimum.
The lateral thickness of the chime seam with flat rolled steel will vary from about 0.03 inch to about 0.06 inch. This is dependent on the thickness of the material, a double hook chime seam will include five layers of plate. The difierence in diameters between the sidewall portion I6and the uniform diameter sidewall 14 is about equal to the lateral thickness of the chime seam. With flat rolled steel, a double-seam chime thickness of about one-sixteenth inch(0.0625 inch) considering sealing compound is utilized or the chime is positioned to permit use of the nominal 209 (2 9/16 inches diameter) can end on the nominal 211 (2 ll/66 inches diameter) can body.
The container of the present invention can be fabricated from flat rolled steel coated with a nonferrous protective material, such as tin, chromium, and the like. The container can also be fabricated from other sheet material, such as aluminum. Or the metals can be mixed for example, the can body can be steel and the end closure aluminum. Thickness gages for aluminum vary from about 0.008 inch to about 0.015 inch. However, in general, for the conventional l2-ounce container, the nominal 2 11/16 inch diameter would be maintained for the uniform diameter portion and the nominal 2 9/16 .inch diameter maintained for the necked-in portion. A similar differential in nominal diameters can be maintained in differing size cans.
Conventional plow-type can openers are manufactured to operate with the above described chime seam thickness. The structure of such can openers will not permit use with containers having no chime seam or a recessed chime seam without the accommodation for the drive wheel provided by the present invention. Attempting to use conventional openers on containers without this accommodation will result in damage to the opener in attempting to bend over the chime seam or to cut into the chime seam.
Specific materials and dimensions have been set forth in describing a specific embodiment for purposes of disclosure of the invention. Such specific teachings will enable one skilled in the art to practice the invention, however the scope of the invention is to be determined from the appended claims.
I claim:
1. A two-piece can comprising:
a unitary can body of cylindrical configuration having a seam-free sidewall symmetrically spaced from a centrally located longitudinal axis of the cylindrical configuration and a seam-free end wall closing one end of the cylindrical configuration can body, and
an end closure closing the remaining end of the cylindrical configuration can body, the end closure at such remaining end of the can body being joined to the sidewall by a chime seam,
the can body being of substantially uniform diameter from its seam-free end wall to within a predetermined distance longitudinally of the end closure chime seam and being neckedin to a smaller diameter over the predetermined distance between the chime seam and the uniform diameter portion of the can body.
the end closure chime seam having an external diameter substantially equal to that of the uniform diameter portion of the can body,
the predetermined longitudinal distance of necked-in, smaller diameter sidewall having a length about one-half inch to permit reception of a drive wheel of a plow-type can opener between the end closure chime seam and the uniform diameter portion of the sidewall.
2. The sheet metal can body of claim 1 in which the chime seam has a lateral thickness of about one-sixteenth inch.
3. The sheet metal can of claim 1 having a differential between nominal diameters of the uniform diameter portion of the can body and the necked-in portion of the can body, such diametrical differential comprising about one-eighth inch.

Claims (3)

1. A two-piece can comprising: a unitary can body of cylindrical configuration having a seamfree sidewall symmetrically spaced from a centrally located longitudinal axis of the cylindrical configuration and a seamfree end wall closing one end of the cylindrical configuration can body, and an end closure closing the remaining end of the cylindrical configuration can body, the end closure at such remaining end of the can body being joined to the sidewall by a chime seam, the can body being of substantially uniform diameter from its seam-free end wall to within a predetermined distance longitudinally of the end closure chime seam and being neckedin to a smaller diameter over the predetermined distance between the chime seam and the uniform diameter portion of the can body. the end closure chime seam having an external diameter substantially equal to that of the uniform diameter portion of the can body, the predetermined longitudinal distance of necked-in, smaller diameter sidewall having a length about one-half inch to permit reception of a drive wheel of a plow-type can opener between the end closure chime seam and the uniform diameter portion of the sidewall.
2. The sheet metal can body of claim 1 in which the chime seam has a lateral thickness of about one-sixteenth inch.
3. The sheet metal can of claim 1 having a differential between nominal diameters of the uniform diameter portion of the can body and the necked-in portion of the can body, such diametrical differential comprising about one-eighth inch.
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942673A (en) * 1974-05-10 1976-03-09 National Can Corporation Wall construction for containers
US4010867A (en) * 1974-02-04 1977-03-08 United Can Company Two-piece can construction
US4373928A (en) * 1981-02-13 1983-02-15 Sonoco Products Company Method of making composite container with compressed body wall
US4374568A (en) * 1981-02-13 1983-02-22 Sonoco Products Company Composite container with compressed body wall portion
USRE32127E (en) * 1981-06-17 1986-04-29 The Procter & Gamble Company Composite can with compressed end to provide easy opening
US6290447B1 (en) * 1995-05-31 2001-09-18 M.S. Willett, Inc. Single station blanked, formed and curled can end with outward formed curl
US20130277377A1 (en) * 1995-05-24 2013-10-24 Crown Packaging Technology, Inc. Can End and Method for Fixing the Same to a Can Body
WO2014150673A1 (en) * 2013-03-15 2014-09-25 Crown Packaging Technology, Inc. Necked beverage can having a seamed-on end
USD751922S1 (en) 2013-03-15 2016-03-22 Crown Packaging Technology, Inc. Necked beverage can
US20160122068A1 (en) * 2014-10-12 2016-05-05 Michael Butter Beverage container

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175411A (en) * 1935-12-23 1939-10-10 Rheem Mfg Co Method of reconstructing drums
US3369694A (en) * 1962-06-08 1968-02-20 Mauser Alfons Container with lid closure
US3376997A (en) * 1967-01-30 1968-04-09 Nat Can Corp Can and can end unit
US3385470A (en) * 1966-01-21 1968-05-28 United Shoe Machinery Corp Containers
US3409166A (en) * 1967-03-17 1968-11-05 American Can Co Self-opening cans

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175411A (en) * 1935-12-23 1939-10-10 Rheem Mfg Co Method of reconstructing drums
US3369694A (en) * 1962-06-08 1968-02-20 Mauser Alfons Container with lid closure
US3385470A (en) * 1966-01-21 1968-05-28 United Shoe Machinery Corp Containers
US3376997A (en) * 1967-01-30 1968-04-09 Nat Can Corp Can and can end unit
US3409166A (en) * 1967-03-17 1968-11-05 American Can Co Self-opening cans

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010867A (en) * 1974-02-04 1977-03-08 United Can Company Two-piece can construction
US3942673A (en) * 1974-05-10 1976-03-09 National Can Corporation Wall construction for containers
US4373928A (en) * 1981-02-13 1983-02-15 Sonoco Products Company Method of making composite container with compressed body wall
US4374568A (en) * 1981-02-13 1983-02-22 Sonoco Products Company Composite container with compressed body wall portion
USRE32127E (en) * 1981-06-17 1986-04-29 The Procter & Gamble Company Composite can with compressed end to provide easy opening
US20130277377A1 (en) * 1995-05-24 2013-10-24 Crown Packaging Technology, Inc. Can End and Method for Fixing the Same to a Can Body
US6290447B1 (en) * 1995-05-31 2001-09-18 M.S. Willett, Inc. Single station blanked, formed and curled can end with outward formed curl
WO2014150673A1 (en) * 2013-03-15 2014-09-25 Crown Packaging Technology, Inc. Necked beverage can having a seamed-on end
USD751922S1 (en) 2013-03-15 2016-03-22 Crown Packaging Technology, Inc. Necked beverage can
CN105492330A (en) * 2013-03-15 2016-04-13 皇冠包装技术公司 Necked beverage can with crimped end
CN105492330B (en) * 2013-03-15 2017-12-15 皇冠包装技术公司 Necked beverage can with crimped end
US10246218B2 (en) 2013-03-15 2019-04-02 Crown Packaging Technology, Inc. Necked beverage can having a seamed-on end
US20160122068A1 (en) * 2014-10-12 2016-05-05 Michael Butter Beverage container
USD907503S1 (en) 2014-10-12 2021-01-12 Acme Merchandise & Apparel, Inc. Beverage container

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