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Publication numberUS2025852 A
Publication typeGrant
Publication dateDec 31, 1935
Filing dateJul 23, 1932
Priority dateJul 23, 1932
Publication numberUS 2025852 A, US 2025852A, US-A-2025852, US2025852 A, US2025852A
InventorsDillhoefer Jr Henry M
Original AssigneeDillhoefer Jr Henry M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2025852 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Dec'. 31, 1935. H. M. DILLHOEFER, JR 2,025,852

CONTAINER Filed July 25, 1932 2 Sheets-Sheet l I H5. 5 H S INVENTOR ATTORNEY 3 H. M. DILLHOEFER, JR 2,025,852

CONTAINER Filed Jui 25, 1952 2 Sheefs-Sheet 2 FIG. .9

JA Miy BY 40m ATTORNEY I Patented Dec. 3 1, 1935 UNITED STATES ,aozassz PATENT, orsics This invention relates to a container, more particularly to the closing means therefor, whereby the container may be advantageously used for.

shippingand storing liquids and semi-liquids. The closing means is, for illustrative purposes,

shown applied to one wall of a container fabricated from sheet metal. shown is provided with two openings both of which are preferably provided with my improved closing means, but where desired, one opening may be otherwise closed; also, either opening may, when desired, be formed in the sidewall .or .body portion of the container insteadof its. head. In container constructions, the filling openings therefor have usually been closed, after the con+ tainers are filled, by screw threaded plugs, each having a flange which was utilized to engage a gasket when the plug was tightened and thus make the opening liquid tight. Plugs of this type have been found objectionable because they project a considerable distance above the container wall and much diiiiculty has been experienced in effectively providing for the mechanical sealing of such plugs against access to the I 2.3 container without detection.

In attempting to overcome these difliculties,

. the closure plugs have been formed with tool.

receiving sockets, the flanges of the plugs have been substantiallyeliminated and the side walls 39 of the plug and its're'ceiving bung ring, either or Another object of the invention is toprovide a headless closuresoconstructed that it may be mounted in the container opening in such manner that the opening is sealed against leakage without the use of a gasket.

Another object of the invention is to provid forthe opening'in the wall of a container, an improved closure means which is relatively sim- 50 ple and of minimum height and which permits of the application of a mutilatable or removable cap that may be utilized as an auxiliary sealing device and as a surface for the application of "desired insignia.

Other objects of the invention will be appar- The container herein ent to those'skilled in the art to which my invention relates from the following description taken in connection with the accompanying. drawings, wherein Fig. 1 is a perspective view of a container em- 5 bodying my invention, parts being. broken away. Fig. 2 is-a plan view, parts being broken away. Fig. 3 is a section on the line 33 of Fig. 2. Fig. 4 is a fragmentary sectional view, en-

larged, 10

poses, the body portion is formed of a. sheet metal 20 section having its longitudinal edges suitably united in sealed liquid tight relation. The ends of the body and peripheral edges of the heads are suitably united, for example, by a double seamed joint, in a liquid tight manner. I is formed with one or more openings and each may be formed in the body portion 'or in either head. By preference, I show two openings in the head 3. Where two "openings are provided, both are sealed in aliquid tight manner, as herein- 80 after set forth, and when desired, the closure may be covered by a cap, the surface of which may carry suitable insignia, and such cap may be utilized as a detection means to prevent unauthorized access-to the contents of the container, so

that I provide for a liquid-tight seal and a mechanical seal. Where the liquid-tight seal only is employed, the bung ring may be mounted in its opening in either upright or inverted position, but where the mechanical seal is to be applied, 40 the bung rings of the formshown in Figs. 1, 2, 3, 4' and 8 are inverted for reasons which will later ppear. For illustrative purposes, I have shown both openings in the head 3 sealed in both a liquidtightmanner and against unauthorized opening by similar means, but in the following description I will refer;to one opening and the closing sealing means therefor; 5 indicatesanopening formed v in .the head 3. 6 indicates-a bungring fixedly associated with the opening and threaded inter nally to receive the closing element 4. l indi-. cates anannular shoulder or wall spaced from the upper face of the head 3 in concentric relation to the opening 5. The wall 1 preferably consti- The container 26 from the application and mounting of the bung ring 6 in relation to the opening 5, thereby avoiding a specially constructed shoulder on the head or ring. For this purpose I show in Figs. 1, 2, 3 and 4 a pressed-in bung ring 6 preferably similar to that shown in the co-pending application of Henry M. Dillhoefer, Ser. No. 486,018 (see Letters Patent No. 1,929,412, dated October 10, 1933), except that the ring 6 is mounted in an inverted position. The ring 6 comprises an internally threaded body portion 9 fitted intothe neck ID of the head or wall 3 and having at one end a flange ll seated and incorporated in the wall of the head 3 and at its other end a circumferentially extended portion beaded over the free end of the neck l0, such beaded over portion forming the annular shoulder I; in Fig. 7 I show a pressedin bung ring 6' of the construction shown in Letters Patent No. 1,783,927, granted to fIheO. W. Rieke and comprising an internally threaded body portion 9a having at one end a flange Ila, the metal of the head'3' engaging the outer and inner faces of the flange at I 2, l3, and extending around the periphery of the flange, as shown at la, to form the annular shoulder in spaced relation to the upper face of the head 3; and in Figs. 8 and 9 I show a pressed-in bung ring 6:: substantially similar to that shown in my co-pending application Ser. No. 492,790 and comprising an internally threaded body portion 9:: having external tapered fiat side walls fitting into a correspondingly shaped neck Illa: provided on the head 3 and a circumferential portion at one end beaded over the free end of the neck like and forming,

a shoulder 13c.

In the forms of construction shown each 01 the bung rings is provided internally with V- straight pipe threads and such threaded wall extends in a direction parallel to the axis of the ring, whereas the closure element is provided with V-tapered pipe threads of the" same pitch as the ring. Rings of inch size are provided with a 14 pitch thread; rings of 1 and 2 inch size are provided withan 11 pitch thread; also, either the internal pitch diameter of the ring 6 is slightly smaller than the pitch diameter of the larger end of the closing element 4 or, the-pitch diameter oi the latter is slightly greater than that of the ring, the purpose beingto effect a sealing relation between the inter-engaging threads of the ring and plug when the latter is screwed into tightened position. By preference, the difference of the ring. The walls of the inter-engaging- 2,026,852 tutes an annular shouldered portion resulting threads are thus forced into such close relation that they efiect a liquid tight seal between the ring and closure element. Accordingly, the element 4 may be made headless or flangeless, as shown, and no gasket is required between the closure and ring to insure liquid tightness. In this arrangement, less metal is required for the manufactlure of the plug, which reduces its cost and also its weight for shipping purposes. In actual manufacture I prefer to increase the pitch diameter of the closing element slightly, so that the ring 6 will adapt itself to a conventional clos- 7 ing plug when the latter is to be used.

The arrangement also provides (1) a closing element having its top surface in or below the 15 authorized access to the container contents or attempted access will be readily detected, since the cap. cannot be replaced and re-conditioned to give it its original appearance. By using a gasket, as shown at I5, the cap may form an 30 auxiliary liquid tight seal.

In my form of. construction the closing element4 may be removed and replaced as often a as desired, but in case it becomes lost, the ring 6 is adapted to receive a conventional plug.

To those skilled in the art to which my invention relates, many changes inconstruction and widely differing embodiments and applications of the invention will suggest themselves without departing from the spirit and scope of the invention. My disclosures and the description herein are purely illustrative and are not intended to be in any sense limiting. What I claim is:

A liquid-tight closure for a container,jcomprising a bung ring seated in the wall of the container the internal wall of the said ring being parallel to its axis and provided with V- pipe threads and a'plug adapted to have screwthreaded engagement withthe said ring, the external wall of the plug tapering slightly and having formed therein V-pipe threads, the internal diameter of the threads in the plug at its larger end being greater than the internal diameter'of the threads in the ring, whereby when the plug is set tightly into the ring a liquid-tight closing of the opening into the container is produced without the necessity of gasket or other closing elements additional to those specified.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4004709 *Dec 19, 1975Jan 25, 1977American Flange & Manufacturing Co., Inc.Drum closure
US4643825 *Dec 6, 1984Feb 17, 1987General Chemical CorporationBulk container system for high purity liquids
US5680953 *Nov 16, 1993Oct 28, 1997Rieke CorporationPlastic drum closure
US5862936 *Sep 27, 1996Jan 26, 1999Sonoco Products & CompanyBung for a pressure vessel
US5971189 *Jun 23, 1997Oct 26, 1999Rieke CorporationPlastic drum closure
US6065627 *Jan 25, 1999May 23, 2000Sonoco Development, Inc.Bung for a pressure vessel
DE932788C *Dec 18, 1938Sep 8, 1955American Flange & MfgEinrichtung zur Erzeugung von scharfgratigem Rohrgewinde in einem aus einer Blechwand herausragenden Rohrstutzen
WO1991016241A1 *Apr 19, 1991Oct 31, 1991Weir & Harrod Machinery Pty LiDrum closure
U.S. Classification220/288
International ClassificationB65D39/00, B65D39/08
Cooperative ClassificationB65D39/084
European ClassificationB65D39/08A1