US3440713A - Method for forming a rivet and attaching a pull tab therewith - Google Patents

Method for forming a rivet and attaching a pull tab therewith Download PDF

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Publication number
US3440713A
US3440713A US287114A US28711463A US3440713A US 3440713 A US3440713 A US 3440713A US 287114 A US287114 A US 287114A US 28711463 A US28711463 A US 28711463A US 3440713 A US3440713 A US 3440713A
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US
United States
Prior art keywords
rivet
pull tab
forming
protrusion
die
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
US287114A
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English (en)
Inventor
John Henchert
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.)
Continental Can Co Inc
Original Assignee
Continental Can Co Inc
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
Application filed by Continental Can Co Inc filed Critical Continental Can Co Inc
Priority to US287114A priority Critical patent/US3440713A/en
Priority to GB6971/64A priority patent/GB1019677A/en
Priority to NL6403797A priority patent/NL6403797A/xx
Priority to FR975159A priority patent/FR1400659A/fr
Priority to OA50847A priority patent/OA00776A/fr
Priority to US537356A priority patent/US3391819A/en
Application granted granted Critical
Publication of US3440713A publication Critical patent/US3440713A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • 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
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49915—Overedge assembling of seated part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/49943—Riveting

Definitions

  • This invention relates in general to new and useful improvements in container elements having means for facilitating the opening thereof without the use of any type of tool, and more particularly relates to a novel method of attaching pull tabs to removable portions of containers.
  • Another object of this invention is to provide a novel 0 method of forming an integral rivet on a removable portion of a can end wherein a large area of the can end is first punched from the plane of the can end followed by the reforming of this large area bya series of operations into a rivet of a greatly reduced size as compared to the original deformed area and wherein in the reforming of the metal, that metal which becomes the rivet is compressed and any tendency to unduly thin the metal in the forming of the rivet is eliminated.
  • Another object of this invention is to provide a novel method of forming a can end having a removable portion which is formed with an integral rivet for the attachment of a pull tab thereto to facilitate the removal thereof, the rivet being initially formed by deforming a large area of the can end, and then through a series of punching operations, the large deformed area is first shaped into a large diameter rivet formation which is followed by a series of reformations in the diameter and the height thereof so that the finally formed rivet is shaped by compressive forces, and during the reforming of the metal, there is a tendency to increase the thickness of the metal as opposed to the usual tendency of thinning the metal as occurs in customary drawing operations, the removable portion of the can end then being outlined by a score line formed in the can end around the rivet.
  • Yet another object of this invention is to provide a novel method of securing pull tabs to removable portions of can ends in accordance with the foregoing wherein it is feasible to provide the pull tab with an upstanding annular flange surrounding a rivet receiving opening therein so that the' pull tab is reinforced at the point of attachment to the can end by the rivet.
  • FIGURE 1 is a plan view of a can end formed in accordance with this invention and shows the general arrangement of the tear strip and pull tab thereof.
  • FIGURE 2 is an enlarged vertical sectional view taken through the can end of FIGURE 1 substantially along the line 22 of FIGURE 1, and shows the specific details of the riveted connection between the tear strip and the pull tab.
  • FIGURE 3 is an enlarged fragmentary plan view of the can end prior to the securement of the pull tab thereto and shows the eccentric relationship of the rivet with respect to the generally circular end of the tear strip.
  • FIGURE 4 is a vertical sectional view similar to FIGURE 2 and shows a slightly modified form of pull tab and the manner in which it is secured to the tear strip of the can end.
  • FIGURE 5 is a schematic vertical sectional view taken through a typical die assembly utilized in the forming of the integral rivet on the can end.
  • FIGURE 6 is a vertical sectional vie-w taken through a central portion of a blanked out can end prior to the provision of the can end with the easy opening feature of this invention.
  • FIGURE 7 is a schematic vertical sectional view taken through the can end portion of FIGURE 6, and shows the same after an initial forming operation wherein a large area dimple is formed in the can end.
  • FIGURE 8 is a schematic vertical sectional view taken through a die assembly, such as that shown in FIGURE 5, wherein the dimple in the can end is being re-formed by a punching operation with the metal being re-formed being under compression and a large diameter rivet being shaped.
  • FIGURE 9 is a schematic vertical sectional view taken through a next die unit in accordance with this invention and shows the details of a second re-forming operation wherein the diameter and height dimensions of the rivet shown in FIGURE 8 are altered.
  • FIGURE 10 is another fragmentary schematic vertical sectional view taken through a third re-forming die unit and shows the diameter and height dimensions of the rivet of FIGURE 9 being further modified.
  • FIGURE 11 is a schematic fragmentary vertical sectional view taken through a scoring die unit wherein the tear strip is outlined by a score line formed in the upper surface of the can end.
  • FIGURE 12 is a schematic vertical sectional view taken through a precrimping die unit utilized for the purpose of precrimping the rivet after the pull tab has been applied thereto.
  • FIGURE 13 is a schematic fragmentary vertical sec tional view taken through the final crimping die unit wherein the rivet is finally crimped to a pull tab retaining portion.
  • FIGURE 14 is a schematic fragmentary vertical sectional view taken through a modified form of precrimping die unit wherein the rivet is precrimped prior to the application of the pull tab thereto.
  • FIGURE 15 is a schematic fragmentary vertical sectional view showing a slightly modified form of the final crimping die unit of FIGURE 13 particularly adapted for crimping a rivet over an upstanding annular flange of a pull tab.
  • FIGURES 1, 2 and 3 wherein there is illustrated a can end formed in accordance with this invention, the can end being generally referred to by the numeral 15.
  • the can end except for an easy opening feature thereof which will be described hereinafter, is of a conventional construction and includes a peripheral curl 16 for facilitating the attachment thereof to a can body by means of a conventional seaming operation.
  • the can end 15 including an end panel 17 which is provided with a score line 18 defining a removable portion or tear strip 19.
  • the tear strip 19 is of a shape to facilitate drinking from a can of which the can end 15 is a part and includes an outer triangular portion 20 and an inner generally straight portion 21.
  • the straight portion 21, as is best shown in FIGURE 3, terminates in its inner end in a generally circular starting portion 22.
  • the starting portion 22 is provided With an integral rivet 23 which is utilized to secure a pull tab 24 to the tear strip 19 to facilitate the removal thereof without the use of any tools or other implements separate from the can of which the can end 15 is a part.
  • the rivet 23 is eccentrically positioned with respect to the generally circular starting portion 22 and is positioned more closely to that extreme inner part of the tear strip 19.
  • the specific position of the rivet 23 with respect to the score line 18 permits the opening of a can with a minimum twisting which is being exerted on the rivet and thereby reduces the necessary strength of the connection the tear strip 19 and the pull tab 24.
  • the pull tab 24 is provided with an opening 25 adjacent one end thereof through which the rivet 23 passes.
  • the opposite end of the pull tab 24 is provided with an upwardly sloping terminal flange 26 to facilitate the lifting of the pull tab to effect the removal of the tear strip 19 from the end panel 17.
  • the pull tab 24 is reinforced against transverse bending by a plurality of longitudinally extending ribs 27.
  • the end panel 17 is provided with a protrusion 28 by a pair of the elements or parts 29 and 30.
  • the die element 29 is provided with a generally part spherical projection 31 disposed in alignment with an opening 32 of the die part 30.
  • the opening 32 is provided with a lower rounded corner 33 to facilitate the shaping of the metal in the forming of the protrusion 28.
  • FIGURE 6 there is illustrated the end panel 17 as it appears before the protrusion 28 is formed.
  • the protrusion 28 may be formed after the can end 15 has been blanked out in a normal blanking operation, or the protrusion 28 may be formed at the same time the can end is blanked out and shaped. If the protrusion 28 is formed during the blanking and shaping of the can end 15, then the die parts 29 and 30 will be portions of the conventional dies utilized in the blanking out and shaping of the can ends.
  • the die unit 34 includes a back-up block 36 which may be mounted in a press structure in any desired manner.
  • the back-up block 36 has seated therein a die center pad 37 which is provided with a stepped opening 38 therethrough defining an intermediate shoulder 39.
  • a die center pad insert 40 of a stepped construction is positioned within the opening 38 and includes an upper portion 41 of a reduced cross section.
  • the lower portion of the insert 40 is provided with a centrally located bore 42 in which there is positioned a spring 43.
  • the spring 43 has its lower end seated on the back-up block 36 and normally retains the insert 40 in an uppermost position with a shoulder 44 of the insert 40 in abutting engagement with the shoulder 39 of the die center pad 37.
  • the die unit 34 also includes a pressure ring 45 which is mounted for upward movement with respect to an upper portion of a press (not shown) by means of springs 46.
  • the pressure ring 45 is provided with a central opening 47 in which there is mounted for relative movement a punch center 48.
  • the punch center 48 is provided with a bore 49 having a rounded lower corner 50.
  • FIGURE 8 it will be seen that in the use of the die unit 34 in re-forming the protrusion 28, the pressure ring 45 first clamps the portion of the end panel 17 surrounding the protrusion 28 against the die center pad 37. Then the punch center 49 comes into engagement with the protrusion 28 and forces the outer material of the protrusion downwardly and inwardly about the upwardly projecting upper portion 41 of the insert 40. The material of the protrusion 28 is thus re-formed about the insert 40 in the manner shown in FIGURE 8 to define a generally tubular member 51.
  • the die unit 52 includes a die center pad 53 having a stepped opening 54 therethrough.
  • the opening 54 in part defines an intermediate transverse shoulder 55.
  • a die center pad insert 56 is positioned within the opening 54 and is of a stepped construction to provide a projecting upper portion 57 of a reduced cross section.
  • the formation of the upper portion 57 of a reduced cross section results in the formation of a shoulder 58 which opposes the shoulder 55 and in the open position of the die unit 52 engages the shoulder 55 to limit the movement of the insert 56.
  • the lower portion of the insert 56 is provided with a spring 59 which normally urges the insert 56 upwardly.
  • the die unit 52 will include a back-up block, such as the back-up block 36, and the spring 59 will be seated thereon. Also, the downward movement of the insert 56 to the position shown in FIGURE 9 will be limited by the back-up block.
  • the die unit 52 also includes an upper pressure ring 60 which is resiliently mounted by means of a plurality of springs 61.
  • the pressure ring 60 is provided with a centrally located bore 62 in which there is mounted for relative movement a punch center 63.
  • the punch center 63 is provided with a central opening 64 aligned with the upper portion 57 of the insert 56 and cooperating therewith to reshape the tubular member 51.
  • the end panel 17 is first clamped against the die center pad 53 by the pressure ring 60, after which the tubular member 51 is compressively engaged by the punch center 63.
  • the punch center 63 moves downwardly, the material of the tubular member 51 is forced inwardly about the upper portion 57 of the insert 56 to effect a reshaping of the tubular member 51 under compression to define a second tubular member 65 which is reduced in diameter and increased in height as compared to the tubular member 51. Since the tubular member 65 is formed from the tubular member 51 with the metal under compression, there is a slight increase in the thickness of the metal forming the tubular member 65.
  • the die unit 66 which is also of a construction similar to the die unit 34.
  • the die unit 66 includes a die center pad 67 which is provided with a stepped opening 68 therein.
  • a die center pad insert 69 is positioned within the opening 68 andincludes a large diameter lower portion 70 and a smaller diameter upwardly projecting upper portion 71.
  • the dilferential in diameters of the portions 70 and 71 results in the formation of an upwardly facing shoulder 72 which opposes a downwardly facing shoulder 73 resulting from the formation of the opening 68.
  • the insert 69 is normally urged upwardly by means of a spring 74 which has its upper end seated in an opening 75.
  • the spring 74 has its lower end resting upon a typical back-up block (not shown) and the downward movement of the insert 69 is restricted by the back-up block.
  • the die unit 66 also includes a pressure ring 76 having a plurality of openings therein in which there are seated springs 78 resiliently mounting the pressure ring 76 for upward movement.
  • the pressure ring 76 is provided with a central bore 79 in which there is mounted for relative movement a punch center 80 of a tubular construction while having a bore 81 aligned with the insert 69.
  • the can end with the tubular member 65 formed therein is positioned on the die center pad 67 and the die unit 66 is closed with the pressure ring 76 first engaging and clamping the end panel 17 surrounding the tubular member 65, after which the tubular member 65 is engaged by the punch center 80 and the material thereof forced inwardly around the upper portion 71 of the insert 69 to define the rivet 23.
  • the rivet 23 has a tubular body portion 8-2 and a closed end 83.
  • the forming of the rivet 23 from the tubular member 65 is accomplished by the punch center in a manner wherein the material of the tubular member 65 is under compression and due to the restraint of the material against flow outwardly, in the reduction of the diameter of the tubular member 65 to form the rivet 23, there is a further slight increase in the wall thickness so that the wall thickness of the rivet 23, for all practical purposes, is the same as that of the original wall thickness of the end panel 17. Thus, there is no reduction in strength of the end panel 17 in the forming of the rivet 23 therefrom.
  • the die unit 84 includes a die center pad 85 in which there is resiliently mounted a die center pad insert 86 for supporting and centering the rivet 23.
  • the die unit 84 also includes an upper die member 87 which is provided with a downwardly projecting rib 88 engageable with the up per surface of the end panel 17 to form the score line 18.
  • the die member 87 is provided with a central bore 89 for snugly receiving the rivet 23 during the scoring operation.
  • the prestaking die unit 89 includes a die center pad '90 having resiliently mounted therein a die center pad insert 91 for reception within the rivet 23.
  • the pull tab 24 is positioned over the rivet 23 and is then loosely staked in place by the upper portion of the die unit 89 which includes a pressure ring 92 having a shape for engaging the pull tab 24 around the rivet 23.
  • the pressure ring 92 is provided with a central bore 93 aligned with the insert 91.
  • a punch 94 having a convexly curved lower end 95 is mounted within the bore 93 for movement relative to the pressure ring 92 and when brought into engagement with the end wall 83 of the rivet 23 effects a slight outward folding of the tubular body portion 82 at its intersection with the end wall 83 to form a slightly projecting bead 96 of a size to retain the pull tab 24 on the rivet 23.
  • the assembled pull tab and can end are then worked upon by a final staking die unit, generally referred to by the numeral 97.
  • the die unit 97 includes a die center pad 98 having a die center pad insert '99 resiliently mounted within a center bore or opening 100 therein.
  • the insert 99 is of a size to be received within the rivet 23.
  • the die unit 97 also includes a resiliently mounted pressure ring 101 which is engaged by springs 102.
  • the pressure ring 101 is provided with a downwardly projecting central boss 103 for engaging and clamping the pull tab 24 surrounding the rivet 23 and holding the pull tab 24 in engagement with the end panel 17.
  • the pressure ring 101 is also provided with a central bore 104 in which there is mounted for relative movement a punch 105 having a fiat lower end 106 which is engageable with the end wall 83 of the rivet 23.
  • the relative proportions of the components of the die unit 97 are such that the die unit 97 effects a further outwardly folding of the outer portion of the tubular body portion 82 to define a definite annular bead 107 which clamps the pull tab 24 to the tear strip 19.
  • the connection between the pull tab 24 and the tear strip 19 is such that when the right-hand end of the pull tab 24 is lifted, as is shown in FIGURE 2, the score line 18 will rupture immediately adjacent the rivet 23 and continued upward movement of the pull tab 24 will result in the tearing of the tear strip 19 from the end panel 17.
  • the above-disclosed method of forming the rivet 23 and staking the rivet 23 to secure the pull tab 24 to the tear strip 19 is suitable for use wherein the can end 15 is formed of a relatively thin and hard aluminum or tin plate as compared to the presently utilized relatively thick and soft aluminum or tin plate.
  • the disclosed method of securing a pull tab to the tear strip 19 makes it possible to utilize relatively economical hard aluminum having a thickness in the vicinity of 0.008 inch as compared to the presently utilized more expensive soft aluminum having a thickness of 0.015 inch, or relatively thin gauge tin plate.
  • FIGURE 14 wherein there is illustrated a die unit 108 which constitutes a modification of the die unit 66.
  • the die unit 108 includes a die center-pad 109 which carries a resiliently mounted die center pad insert 110.
  • the insert 110 in lieu of having a flat upper end as in the case of the insert 69, is provided with an upper end having an outer upwardly projecting annular rib 111 for a purpose to be described hereinafter.
  • the die unit 108 also includes a pressure ring 112 which is resiliently mounted by a spring 113.
  • a punch center 114 is seated in a center bore 115 of the pressure ring 112 for effecting a re-forming of the tubular member 65 and the reduction of the diameter thereof.
  • the punch center 114 is provided with a central bore 117 in which there is mounted a further punch 118.
  • the punch 118 is provided with a wedge-shaped lower portion 119 which is centrally located and which is generally complementary to the upper end of the insert 110.
  • the rivet 116 When the can end having the tubular member 65 is worked upon by the die unit 108, there results a rivet 116 having a tubular Wall portion 120 of the same diameter as the tubular wall portion 82 of the rivet 23.
  • the rivet 116 also has a closed end 121 of which the outer portion is in the form of an outwardly directed annular bead 122 to facilitate the folding of the rivet in the securement of the pull tab 24 to the tear strip 19.
  • tubular rivet 116 may be folded in the manner disclosed with respect to the tubular rivet 23.
  • FIGURES 4 and 15 there is illustrated a modified form of pull tab which is generally referred to by the numeral 124.
  • the pull tab 124 differs from the pull tab 24 only in that it is provided with an upstanding flange 125 surrounding the rivet receiving opening 126 therein.
  • the flange 125 reinforces the pull tab 124 around the opening 126 to prevent any possible tearing of the pull tab out from the opening 126 and off of the rivet on which the pull tab 124 is mounted.
  • the end panel 17 must be provided with a rivet which is increased in height as compared to the rivet 23.
  • This rivet is generally referred to by the numeral 127.
  • This die unit 97 is generally referred to by the numeral 123 and includes a die center pad 128 with a central bore 129 in which there is resiliently mounted a die center pad insert 130 for reception Within the rivet 127.
  • the die unit 123 also includes a pressure ring 131 which is provided with a depending central portion 132 for cooperation with the die center pad 128 in clamping the pull tab 124 around the rivet 127 to the end panel 17.
  • the pressure ring 131 is resiliently mounted by means of springs 133 and is provided with a central bore 134 in which there is mounted for relative movement a punch 135.
  • the resultant rivet 127 has an end Wall 136 and a tubular body portion 137 which is outwardly folded to form an annular bead 138 at the intersection of the tubular body portion 137 with the end wall 136.
  • the annular bead 138 is of a size to fully clamp the pull tab 124 to the tear strip 19.
  • a method of securing a pull tab to a removable portion of a sheet comprising the steps of forming a large diameter relatively shallow protrusion, then acting on the protrusion in a series of compressive forming steps to re form the protrusion by decreasing the diameter thereof and forcing material of the protrusion laterally inwardly to form a closed tubular rivet having a wall thickness of substantially the same thickness as the original thickness of the sheet, positioning the pull tab on the rivet, prestaking the rivet to define a minor laterally extending outer bead loosely retaining the pull tab on the rivet, and then finally staking the rivet to further shape the laterally extending outer head with the bead clamping the pull tab to the removable portion, all of said steps being performed without materially reducing the thickness of the sheet adjacent the rivet and while maintaining the external configuration of the sheet.
  • a method of securing a pull tab to a removable portion of a metal container panel comprising the steps of forming a large diameter protrusion in said container panel, then acting on the protrusion in a series of combined punching and compressive forming steps wherein the metal of said protrusion is progressively reduced in diameter and decreased in axial extent until a tubular rivet having a body and an integrally closed end is formed in tegrally with said container panel, the combined elforts of said combined punching and compressive forming steps substantially maintaining the thickness of the metal of said protrusion wherein the thickness of the metal of the rivet is substantially the same as that of the container panel and the formed rivet being of an axial extent materially greater than the thickness of the pull tab; positioning the pull tab on the rivet in telescoped relation with the rivet extending through and beyond the pull tab; and then staking the rivet and thereby reversely folding that portion of the rivet body extending beyond the pull tab to form a laterally extending outer bead clamping the pull tab to the removable panel portion.
  • a method of securing a pull tab to a removable portion of a metal container panel comprising the steps of forming a large diameter protrusion in said container panel, next reshaping the protrusion to decrease the diameter and height thereof by forcing the metal'of the protrusion laterally inwardly, and then further re-forming the protrusion by performing at least one combined punching and compressive forming step wherein the protrusion is further reduced in diameter and increased in axial extent and thereby forming the protrusion into a rivet having a body and an integral closed end with the thickness of the metal of the rivet being substantially the same as that of the container panel and the formed rivet being of an axial extent materially greater than the thickness of the pull tab; positioning the pull tab on the rivet in telescoped relation with the rivet extending through and beyond the pull tab; and then staking the rivet and thereby 'reversely folding that portion of the rivet body extending beyond the pull tab to form a laterally extend- 10 ing outer bead clamping the pull tab to the removable panel portion.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US287114A 1963-06-11 1963-06-11 Method for forming a rivet and attaching a pull tab therewith Expired - Lifetime US3440713A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US287114A US3440713A (en) 1963-06-11 1963-06-11 Method for forming a rivet and attaching a pull tab therewith
GB6971/64A GB1019677A (en) 1963-06-11 1964-02-19 Improvements in or relating to containers
NL6403797A NL6403797A (fr) 1963-06-11 1964-04-09
FR975159A FR1400659A (fr) 1963-06-11 1964-05-20 Formage d'un rivet à l'extrémité d'une boîte de conserve en métal pour y fixer une patte de tirage
OA50847A OA00776A (fr) 1963-06-11 1964-12-15 Formage d'un rivet à l'extrémité d'une boîte de conserve en métal pour y fixer une patte de tirage.
US537356A US3391819A (en) 1963-06-11 1966-03-25 Rivet on metal can end for attaching pull tab

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US287114A US3440713A (en) 1963-06-11 1963-06-11 Method for forming a rivet and attaching a pull tab therewith

Publications (1)

Publication Number Publication Date
US3440713A true US3440713A (en) 1969-04-29

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US287114A Expired - Lifetime US3440713A (en) 1963-06-11 1963-06-11 Method for forming a rivet and attaching a pull tab therewith

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US (1) US3440713A (fr)
FR (1) FR1400659A (fr)
GB (1) GB1019677A (fr)
NL (1) NL6403797A (fr)
OA (1) OA00776A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580200A (en) * 1968-07-17 1971-05-25 Reynolds Metals Co Apparatus for and method of forming a sheetlike workpiece
US3638597A (en) * 1969-09-26 1972-02-01 Fraze Ermal C Method of forming a rivet
US3724063A (en) * 1969-12-02 1973-04-03 Fraze Ermal C Method of making riveted joint
US3781972A (en) * 1970-10-30 1974-01-01 Carnaud & Forges Method of securing a pull ring to an easy opening can end
US4145801A (en) * 1978-02-13 1979-03-27 Aluminum Company Of America Method of forming an integral rivet for an easy open can end
US4783985A (en) * 1985-05-29 1988-11-15 Aluminum Company Of America Integral rivet and method of making
US4928375A (en) * 1984-10-11 1990-05-29 Hadaway Bernard M Method of forming a hollow fastener from sheet metal
US5755134A (en) * 1994-11-09 1998-05-26 Aluminum Company Of America Rivet in a converted can end, method of manufacture, and tooling
US20050034587A1 (en) * 2001-11-09 2005-02-17 Gunther Weber Cutting blade that can be rotationally driven
CN103691824A (zh) * 2013-11-22 2014-04-02 宁波拓普集团股份有限公司 一种组合式铆接工装
US20190224738A1 (en) * 2018-01-23 2019-07-25 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
CN111344083A (zh) * 2018-01-23 2020-06-26 斯多里机械有限责任公司 具有可膨胀泡的壳及其工具
CN114227333A (zh) * 2021-12-31 2022-03-25 兴化日成金属制品有限公司 一种可夹持四方产品的液压卡盘

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215449B1 (fr) * 1985-09-14 1991-05-22 RAPP, Eugen Procédé et dispositif pour assembler des plaques minces

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US1792897A (en) * 1927-07-23 1931-02-17 William Vogel & Bros Inc Can-closure structure and process
US1870728A (en) * 1929-12-30 1932-08-09 American Can Co Apparatus for making lever opener container parts
US1915299A (en) * 1930-10-28 1933-06-27 Draper Mfg Co Removable closure for metallic containers
US1990718A (en) * 1931-04-23 1935-02-12 Elastic Stop Nut Corp Process of making nuts
US1975979A (en) * 1934-02-02 1934-10-09 Arthur H Parker Method of and apparatus for making can ends
US2753624A (en) * 1952-02-06 1956-07-10 English Electric Co Ltd Method of assembling two components by a fastener
US3058204A (en) * 1953-06-13 1962-10-16 Jorgensen Niels Peter Method for the production of hand wheels from a single blank
US2984001A (en) * 1955-11-04 1961-05-16 Lyon George Albert Method of forming sockets for drop rings
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Cited By (22)

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Publication number Priority date Publication date Assignee Title
US3580200A (en) * 1968-07-17 1971-05-25 Reynolds Metals Co Apparatus for and method of forming a sheetlike workpiece
US3638597A (en) * 1969-09-26 1972-02-01 Fraze Ermal C Method of forming a rivet
US3724063A (en) * 1969-12-02 1973-04-03 Fraze Ermal C Method of making riveted joint
US3781972A (en) * 1970-10-30 1974-01-01 Carnaud & Forges Method of securing a pull ring to an easy opening can end
US4145801A (en) * 1978-02-13 1979-03-27 Aluminum Company Of America Method of forming an integral rivet for an easy open can end
US4928375A (en) * 1984-10-11 1990-05-29 Hadaway Bernard M Method of forming a hollow fastener from sheet metal
US4783985A (en) * 1985-05-29 1988-11-15 Aluminum Company Of America Integral rivet and method of making
US5755134A (en) * 1994-11-09 1998-05-26 Aluminum Company Of America Rivet in a converted can end, method of manufacture, and tooling
US9102072B2 (en) 2001-11-09 2015-08-11 Weber Maschinenbau Gmbh & Co. Kg Cutting blade that can be rotationally driven
US20050034587A1 (en) * 2001-11-09 2005-02-17 Gunther Weber Cutting blade that can be rotationally driven
US20070119285A1 (en) * 2001-11-09 2007-05-31 Weber Maschinenbau Gmbh & Co. Kg Cutting blade that can be rotationally driven
CN103691824A (zh) * 2013-11-22 2014-04-02 宁波拓普集团股份有限公司 一种组合式铆接工装
CN103691824B (zh) * 2013-11-22 2016-08-17 宁波拓普集团股份有限公司 一种组合式铆接工装
US20190224738A1 (en) * 2018-01-23 2019-07-25 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
CN111344082A (zh) * 2018-01-23 2020-06-26 斯多里机械有限责任公司 具有可扩展铆接钮部的壳件以及用于其的模具
CN111344083A (zh) * 2018-01-23 2020-06-26 斯多里机械有限责任公司 具有可膨胀泡的壳及其工具
US11059091B2 (en) * 2018-01-23 2021-07-13 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
US11691193B2 (en) * 2018-01-23 2023-07-04 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
US20230286033A1 (en) * 2018-01-23 2023-09-14 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
US12017267B2 (en) * 2018-01-23 2024-06-25 Stolle Machinery Company, Llc Shell with expandable rivet button and tooling therefor
CN114227333A (zh) * 2021-12-31 2022-03-25 兴化日成金属制品有限公司 一种可夹持四方产品的液压卡盘
CN114227333B (zh) * 2021-12-31 2024-05-03 兴化日成金属制品有限公司 一种可夹持四方产品的液压卡盘

Also Published As

Publication number Publication date
NL6403797A (fr) 1964-12-14
FR1400659A (fr) 1965-05-28
GB1019677A (en) 1966-02-09
OA00776A (fr) 1967-11-15

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