US3207356A - Closure plug - Google Patents

Closure plug Download PDF

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Publication number
US3207356A
US3207356A US216809A US21680962A US3207356A US 3207356 A US3207356 A US 3207356A US 216809 A US216809 A US 216809A US 21680962 A US21680962 A US 21680962A US 3207356 A US3207356 A US 3207356A
Authority
US
United States
Prior art keywords
plug
insert
extending
wall
cup
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
US216809A
Other languages
English (en)
Inventor
Walter J Pentesco
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.)
American Flange and Manufacturing Co Inc
Original Assignee
American Flange and Manufacturing 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 American Flange and Manufacturing Co Inc filed Critical American Flange and Manufacturing Co Inc
Priority to US216809A priority Critical patent/US3207356A/en
Priority to CH921163A priority patent/CH402720A/fr
Priority to FI631450A priority patent/FI42804C/fi
Priority to DK376763AA priority patent/DK118059B/da
Priority to AT650163A priority patent/AT247228B/de
Priority to ES0290813A priority patent/ES290813A1/es
Priority to NL63296603A priority patent/NL141451B/xx
Priority to GB32202/63A priority patent/GB980599A/en
Priority to US509658A priority patent/US3384952A/en
Application granted granted Critical
Publication of US3207356A publication Critical patent/US3207356A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • B65D39/088—Bungs with special means facilitating handling thereof
    • 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
    • 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
    • B21D51/40—Making outlet openings, e.g. bung holes

Definitions

  • This invention relates to closure plugs for containers and methods for making the same and is more particularly concerned with the combinations of threaded plug bodies with means for actuating the plugs and methods for forming such combinations.
  • a lightweight plug possessed of the advantages of the prior art plugs of heavier material must be provided with a Wrench engaging means which, in itself, is of suitable strength in addition to having a connection between the wrench engaging means and the plug which provides adequate torque resistance. Also, the forces applied to the plug, through the wrench engaging means, must be distributed over the plug in such a way as to eliminate any distortion of the plug or reduce it to an inconsequential minimum. At the same time the whole of the construction, as well as the method of manufacture, must lend itself to the production of a simple, economical, effective closure in order to make a commercially attractive product.
  • Another object is to provide for a strong engagement between the wrench engaging means and the plug;
  • Another object is to provide such means and such engagement in a manner to protect the plug against distortion when actuated;
  • a further object is to provide a wrench engaging insert for closure plugs which is .so formed as to effectively resist distortion or collapse.
  • a further object is to provide such an insert which imparts a high degree of rigidity to the closure plug.
  • FIG. 1 is a part elevation part Vertical section of a partially formed plug in accordance with the invention
  • FIG. 2 is a plan View of a strip of material illustrating the blanking of a plug insert therefrom;
  • FIG. 3 is a perspective view of the completed wrench engaging insert
  • FIG. 4 is a Vertical section of the curling die with the plug blank and insert assembled together and mounted therein and with the curling anvil of the die in position to commence its curling operation to complete the plug;
  • FIG. 5 is a top plan view of the finished plug
  • FIG. 6 is a fragmentary vertical section of the curling anvil in contact with a somewhat open portion of the plug rim.
  • FIG. 7 is a view similar to FIG. 6 but at the position where the plug rim is curled over on the end of the insert.
  • FIG. 8 is a vertical section taken along line 8 8 of FIG. 5 and looking in the direction of the arrows.
  • the plug body Ias shown in FIG. 1 is formed by bl-anking a hollow cup-shaped member out of a circular blank of light gauge sheet metal, to have a bottom 1 with an opstanding cylindrical side wall 2 therearound.
  • the uppermost portion 3 of the side wall is of increased diameter with respect to the rest of the plug. This portion subsequently becomes the head of the plug.
  • An annular shoulder portion 4. extends substantially parallel to the bottom 1.
  • the side wall 2 has roller swaged threads 5 imparted thereto.
  • a thread formation of this type besides providing an effective securing means, adds substantial rigidity to the plug body. This is highly important when lighter gauge st-ock is employed as in the instant invention.
  • the side wall is inset to form a gasket seat with a cylindrical bottom 6, for the reception of a gasket 7, as shown in FIG. 8.
  • FIG. 2 illustrates a strip 11 of sheet metal from which the wrench engaging insert, generally indicated at 10 in FIG. 3, is blanked. It can readily be seen that in the production of the insert blanks, wastage is kept to a minimum due to the fact that the strip, having parallel sides 12 and 13, need only have the double concave portion 14 punched out of it.
  • each lug 16 extends substantially perpendicularly from the base portion 15 and have flat top portions 17 substantially parallel to the base 15, which terminate in the convexly curved free edge extremities 18.
  • the upstanding side wall 19 of each lug extends in substantiallya sine curve from one free vertical edge 20- to the opposite one. These curves are concave at the side positions 19a and project inwardly toward each other at their midpositions 19b.
  • the design of the insert 10 is such that it is easily produced from the strip 11 in a progressive die having two stations. In the first station the strip is formed into the configuration of FIG. 3 and in the second station the blank is punched out of the strip 11. In the finished insert 10, the curvature of the edge extremities 18 and the distance therebetween brings t-hose surfaces into-correspondence with the -inner surface of the enlarged upper portion 3 of the plug wall, while the height and spacing olf the free edge portions 26 of the lugs 16 is such as to enable them to fit snugly within the threaded portion of the plug side wall for a reason to be discussed hereinafter. The curvature of the sides of the base 15 of the insert is due to the stretching of the metal in the formation of the end portions.
  • FIG. 4 illustrates the next step in the manufacture of closure plugs in accordance with this invention.
  • First the insert 10 is seated within the plug, with the -base portion 15 resting upon the bottom 1 and the flattened tops of the wrench engaging lugs resting upon the upper surface of the annular shoulder 4.
  • This assembly is placed within a curling die having a rolling anvil 22 and a plurality of expandable supporting jaws 23.
  • the jaws 23 each have an inwardly projecting lip 24 which abut the plug gasket seat 6 and underlies the annular shoulder 4 when the jaws are in closed position.
  • the rolling anvil 22 has an annular groove 25 formed therein, which contacts the upper edge of the enlarged wall portion 3, rolling the same inwardly so as to secure the insert upon and against the surface of the shoulder 4.
  • An important object of this invention is to effectively secure this Wrench engaging insert within the plug body so as to withstand torques in the lb. ft. range, without that securing requiring a rolling anvil configuration whereby the plug would need to be oriented Within the die in any particular manner for matching up with the rolling anvil. This materially decreases production time and simplifies the apparatus required.
  • FIGS. 6 and 7l illustrate, in detail, how the rolling anvil of the instant invention, having a uniform configuration throughout, forms the upstanding wall porh tion 3 into the head of the plug to achieve the result desired.
  • FIG. 6 shows the die in closed position after having fully formed a portion of the plug head spaced from the inserts
  • FIG. 7 shows the condition that prevails where the fully formed head overlies an insert.
  • the curvature of the curling surface 25 is such that, when the die closes, the upper end 21 of the enlarged wall portion 3 is first engaged by that surface at approximately the position 26.
  • the curling surface turns the end 21 inward and then causes most of the height of the portion 3 to be curled inwardly in the form of an open bead as seen in FIG. 6.
  • the metal being curled, 4 reaches the inner end 27 of the curling surface, it will follow its now natural tendency to continue in the inward path in which it has been directed by the surface 25 to a position below the plane of the shoulder 4 as indicated at 28.
  • the doubling Iover of the enlarged portion 3 adds rigidity to the plug head which, as can be seen in FIG. 8, backs up and supports the gasket when the plug is tightened into a closure. If this support is not sufficient, or is uneven, tightening of the plug in a manner to prevent leakage may be difficult and may distort the plug.
  • the particular curvature applied to the curling surface 25 of the anvil is of material significance. If, for instance, the curvature were too pronounced, or the curve was too short, the free end edge 21 ofthe portion 3, as it emerged from the ⁇ surface 25 at the position 27, would dig down into the upper surface of the lug portions 17 and would either collapse the portion 17 downwardly or be itself collapsed at that position. If, on the contrary, the curvature .of the surface was too fiat or extended beyond the position 27, the free portion 28 of the turned over edge would not extend downwardly to a suicient extent to lie against the sides of the lug portion 17 to prevent the insert from rotating.
  • the product and method of manufacture disclosed here provide a plug of lightweight metal having structural qualities heretofore thought to be found only in much heavier and more costly closure plugs.
  • the wrench engaging insert fits snugly within the plug with the edge 20 making line contact with the inner surface of the threaded side wall (FIG. 4), hence not only adding rigidity to the plug but supporting the wrench engaging lugs in such a manner as to minimize any likelihood of their collapsing under excessive loads.
  • This arrangement provides for an even distribution of the forces throughout the plug wall, which are applied when the plug is actuated and which in the prior art plugs have often resulted in leakers due to a distorted plug.
  • a rotatably applied closure plug for containers said plug having a body formed as a generally cup-shaped member and comprising a bottom and an upstanding wall therearound, securing means on the plug adapted to interact with other securing means on a container at an opening therein to secure the plug to the container upon relative rotation of the two such securing means, the entire upper circular edge of said wall of the cup-shaped member terminating in a laterally extending head having a at first portion extending outwardly from said wall and then curled into an inwardly and downwardly extending second portion closely overlying said rst portion, an actuating means engaging insert seated wholly within said cup-shaped member, said insert extending diametrically within said plug having an elongated intermediate portion and opposite extremities positioned between said first and second portions, said inwardly extending second portion terminating in a free edge overlying said extremities and extending down to a position below said extremities and closely adjacent said upper edge of said wall throughout the remainder of the periphery of said cup
  • a closure plug as in claim 1, the intermediate portion of said insert comprising a pair of opposed upstanding actuating member engaging lugs extending radially inwardly of said wall and a fiat elongated base connecting said lugs and seated upon said bottom.
  • a rotatably applied closure plug for containers said plug having a body formed as a generally cup-shaped member and comprising a bottom and an upstanding wall therearound, securing means on the plug adapted to interact with other securing means on a container at an opening therein to secure the plug to the container upon relative rotation of the two such securing means, the entire upper circular edge of said wall of the cup-shaped member terminating in a laterally extending head having 5 a flat first portion extending outwardly from said wall and then curled into an inwardly and downwardly extending second portion closely overlying said irst portion, an actuating means engaging insert seated Wholly within said cup-shaped member, said insert extending diametrically within said plug having an elongated intermediate portion and opposite extremities positioned between said first and second portions, said intermediate portion comprising a pair of apposed upstanding actuating member engaging lugs extending radially inwardly of said wall and a at elongated base connecting said lugs and seated upon

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US216809A 1962-08-14 1962-08-14 Closure plug Expired - Lifetime US3207356A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US216809A US3207356A (en) 1962-08-14 1962-08-14 Closure plug
CH921163A CH402720A (fr) 1962-08-14 1963-07-24 Bouchon pour récipient et procédé pour sa fabrication
FI631450A FI42804C (fi) 1962-08-14 1963-07-24 Säiliön sulkutulppa
DK376763AA DK118059B (da) 1962-08-14 1963-08-06 Skruelukkeprop til beholdere.
AT650163A AT247228B (de) 1962-08-14 1963-08-13 Verschlußstöpsel mit napfförmigem Stöpselkörper und Verfahren zu seiner Herstellung
ES0290813A ES290813A1 (es) 1962-08-14 1963-08-13 Perfeccionamientos en tapones obturadores para recipientes
NL63296603A NL141451B (nl) 1962-08-14 1963-08-13 Sluitplug.
GB32202/63A GB980599A (en) 1962-08-14 1963-08-14 Improvements relating to closure plugs and methods for making same
US509658A US3384952A (en) 1962-08-14 1965-09-07 Method of making closure plugs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US216809A US3207356A (en) 1962-08-14 1962-08-14 Closure plug

Publications (1)

Publication Number Publication Date
US3207356A true US3207356A (en) 1965-09-21

Family

ID=22808600

Family Applications (1)

Application Number Title Priority Date Filing Date
US216809A Expired - Lifetime US3207356A (en) 1962-08-14 1962-08-14 Closure plug

Country Status (8)

Country Link
US (1) US3207356A (es)
AT (1) AT247228B (es)
CH (1) CH402720A (es)
DK (1) DK118059B (es)
ES (1) ES290813A1 (es)
FI (1) FI42804C (es)
GB (1) GB980599A (es)
NL (1) NL141451B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549964A (en) * 1982-06-03 1985-10-29 Enso-Gutzeit Oy Device for flushing obstructions from the reject head of a centrifugal separator
USD932893S1 (en) * 2017-05-19 2021-10-12 Greif International Holding Bv Container closure plug

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51149450A (en) * 1975-06-18 1976-12-22 Kinji Yamamoto Screw plug assembled by combination of rugged surfaces

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1150596A (en) * 1913-07-09 1915-08-17 Richard M Hollingshead Closure for receptacles.
US2018006A (en) * 1935-03-09 1935-10-22 Closure Service Company Metal closure
US2217982A (en) * 1939-04-27 1940-10-15 Heil Co Receptacle transfer mechanism
US2387990A (en) * 1941-09-08 1945-10-30 American Flange & Mfg Threaded sheet metal plug
US2648123A (en) * 1949-11-26 1953-08-11 Weatherhead Co Method of making a hose end coupling
US2718979A (en) * 1950-08-16 1955-09-27 American Flange & Mfg Closure plugs and methods for forming the same
US2774507A (en) * 1954-12-10 1956-12-18 Hurley Charles Warren Sealing disc closure
FR1142783A (fr) * 1955-03-02 1957-09-23 Bendix Aviat Corp Bouchon de réservoir
US2987216A (en) * 1959-07-10 1961-06-06 Robert S Fletcher Disposable liner for a container
US3023924A (en) * 1955-03-02 1962-03-06 Bendix Corp Filler cap for master cylinder

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1150596A (en) * 1913-07-09 1915-08-17 Richard M Hollingshead Closure for receptacles.
US2018006A (en) * 1935-03-09 1935-10-22 Closure Service Company Metal closure
US2217982A (en) * 1939-04-27 1940-10-15 Heil Co Receptacle transfer mechanism
US2387990A (en) * 1941-09-08 1945-10-30 American Flange & Mfg Threaded sheet metal plug
US2648123A (en) * 1949-11-26 1953-08-11 Weatherhead Co Method of making a hose end coupling
US2718979A (en) * 1950-08-16 1955-09-27 American Flange & Mfg Closure plugs and methods for forming the same
US2774507A (en) * 1954-12-10 1956-12-18 Hurley Charles Warren Sealing disc closure
FR1142783A (fr) * 1955-03-02 1957-09-23 Bendix Aviat Corp Bouchon de réservoir
US3023924A (en) * 1955-03-02 1962-03-06 Bendix Corp Filler cap for master cylinder
US2987216A (en) * 1959-07-10 1961-06-06 Robert S Fletcher Disposable liner for a container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549964A (en) * 1982-06-03 1985-10-29 Enso-Gutzeit Oy Device for flushing obstructions from the reject head of a centrifugal separator
USD932893S1 (en) * 2017-05-19 2021-10-12 Greif International Holding Bv Container closure plug

Also Published As

Publication number Publication date
GB980599A (en) 1965-01-13
AT247228B (de) 1966-05-25
DK118059B (da) 1970-06-29
ES290813A1 (es) 1964-01-16
FI42804B (es) 1970-06-30
FI42804C (fi) 1970-10-12
CH402720A (fr) 1965-11-15
NL141451B (nl) 1974-03-15

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