US2275067A - Sealing tag for bunghole closures - Google Patents

Description

March 3, 1942. R. s. RHEEMv ET AL' 2,275,067

SEALING TAG FOR BUNGHOLE cLosUREs Filed June 28, 1937 INVENTORS Pfc/#veo 5. HAE/vl Hoe/v ce c. WN

ATTORNEY.

Patented Mar. 3, 1942 f SEALING TAG FOR BUNGHOLE CLOSURES Richard S. Rheem, Orinda, Horace C. Brown, Berkeley, and Arthur J. Allen, Richmond, Calif., assignors, -by mesne assignments, to American Flange & Manufacturing Co., Inc.,

New York, N. Y., a corporation of Illinois Application June 28, 1937, Serial No. 150,788

(Cl. 22o- 39) 2 Claims.

The invention relates to a fitting which adapts a metal container bung-opening for closure with a threaded plug, and relates more particularly to a means associated with the fitting and to which the plug may be tied or otherwise secured to prevent unauthorized or undetectable tampering with or removal of the plug or other closure.

An object of the invention is to provide a sealing means of the character described which may be effectively and at Very small cost, incorporated as a. fixed part of one of the fitting members so as to avoid the necessity for separately handling the means during the application of the fitting members Iand the assembly of the mem-bers on the container.

Another object of the invention is to provide a sealing means las above set forth, which while formed as a separate part of the vassociated iltting member and arranged to be secured thereto after f the member has been completely fabricatedJ will require no change in the original design of the member and make necessary the fabrication or assembly of the fitting differently when Vthe sealing means is omitted.

A further object of the invention is to provide a sealing means embodying a sealing tag or clip which is formed separately of the associated litting member, but may be :attached to the member without the aid of any extraneous fastening means.

The invention possesses other objects Iand features of advantage, some of which, with the foregoing, will be set forth in the following description of the preferred form of the invention which is illustrated in the drawing accompanying and forming part of the specication. It is to be understood, however, that variations in the showing made by the said drawing and description may be adopted within the scope of the invention as set forth in the claims.

Referring to said drawing:

Figure 1 is a longitudinal section View through a bung hole fitting and closure with the sealing means of our invention in use.

Figure 2 is la perspective view of the sealing tag and associated fitting member.

Figure 3 is an enlarged fragmentary plan view of the sealing tag and fitting member, parts being shown in section.

Figure 4 is a view similar to Figure 3, but with the tag omitted.

Figure 5 is Ia plan View of the sealing tag.

The sealing means of our invention as shown in Figure 1, is embodied in a fitting 6 which is 55 applied to a bung opening I in a wall 8 of a metal container. In the form of ntting illustrated, there is provided an internally threaded bushing 9 which extends through the opening I and has provided therein a laterally extending flange II which abuts against the outer side of the wall 8. At the inner side of the wall, the fitting is provided with a backing member I 2 having a lateral flange I3 between which and the flange II the wall portion surrounding the opening is clamped, the parts being retained in clamped position by means of a bead or roll I4' on the bushing, which is flanged over the inner edge of the sleeve portion i5 of the member I2 which encircles and embraces the bushing 9. Relative rotational dis-- placement of the bushing 4and backing member with respect to each other and to the container wall, is prevented by means of projections I 'I formed in the flange II, which seat in offsets I8 formed in the wall and which in turn seat in depressions I9 in the flange I3 of the backing member.

Closure of the opening 2l through the bushing Sis effected by means of an externally threaded plug 22 preferably having a head or shoulder 23 arranged to seat upon the flange 9. To prevent unauthorized removal of the plug from the fitting, the plug is arranged to be anchored to the fitting so as to prevent the rotation of the plug in the threaded bushing, and usually the anchoring is effected by wiring some perforated protuberances of the plug to a similar portion formed on or attached to a part of the fitting or container Wall. As here shown, the plug is formed with one or more perforated bosses 26 to which the wire may be secured. A relatively soft fusible metal wafer, such as indicated at 27, is ordinarily used to connect portions of the anchoring wire to effect a desired sealing of the connection.

In the present embodiment of the invention the anchoring means for the attachment of the sealing wire to the fitting, is directly associated with the bushing member 9 and more specifically the flange II thereof. The means aforesaid comprises a tag or clip 28 preferably formed of sheet metal of a thickness desirably less than the flange and elongated and positioned to extend radially outward from the flange.

The manner of connecting the tag to the flange and the form and cooperation of the contiguous portions of the tag and flange involve a very important part of the present invention. As may be most clear from Figures 2 and 3, there is provided in the peripheral edge of the flange Il a recess 3l which extends for the full thickness of the flange and whose width corresponds generally to the width of the tag but Whose depth is appreciably greater than the thickness of the tag. The tag, as will be understood, is arranged to be held in the recess, and the portion of the tag directly inserted within the recess is disposed at the base of the recess in angular relation with remainder of the tag and so that the flat sides of the tag will extend generally concentrically of the bushing. Preferably, the surfaces 32 and 33 defining the sides of the recess are constricted toward the outer end of the recess so that the tag which is disposed at the inner end of the recess is at all times substantially confined therein. It is important to note that in the normal fabrication of the bushing member the latter is completely formed before the recess is cut therein. This is done since the same form of bushing is used where no sealing means is desired and thus the necessity for making a special design to accommodate the sealing means is avoided. In the present instance since practically the only change required in the bushing to adapt it for the accommodation of the tag, is the formation of the dovetail shape recess, which formative operation may be readily effected by a punching operation directed longitudinally of the bushing, this feature is effectively taken care of.

The sides 32 and 33 desirably converge to form an included angle of vapproximately thirty degrees, and where, as here, the converging sides are provided, the tag will be ordinarily inserted into the recess at a side wall of the flange, and

in the preferred method of applying the tag the latterA is inserted into the opening before the different parts of the tag are bent in angular relation. When the tag has been inserted into the recess, in order to lock the tag in the latter the portions of the iiange dening the sides 32 and 33 are forced inwardly by a suitable tool so as to thus firmly x the tag against radial displacement, it being noted that owing to the converging sides of the recess the side portions will lend themselves to be more readily de pressed against the tag and also by a direct inward radial force. As will be clear from Figure 5, the portion of the tag arranged to t in the recess is provided at opposite edges thereof l,

with notches 38 and 3i, and thus it will be evident that when the sides of the recess are pressed inwardly against the tag, portions of the bushing metal will be forced into the notches and thus securely hold the tag into the recess against displacement longitudinally of the bushing. It will thus be clear that the tag will be rigidly secured in position and effectively held against displacement in every direction. It is also important to note, that notwithstanding the rigid connection of the tag with the bushing, the attachment has been effected without in any way mutilating or interfering with any portion of the bushing except at the immediate peripheral edge thereof, and since the recess is confined to such edge, there Will be no interference with the functional relationship and cooperation of any of the fitting parts with each other. In this latter connection, it will be noted that the recess and tag are located in a safe position between the protuberances of the bushing ange, and at a point outwardly of the space occupied by the sealing washer 4l between the flange ll and the container wall.

As will be clear from Figure 1, in the form of the container shown, there is provided an embossment in the container wall, which surrounds the bushing flange Il. In keeping with this, the outwardly extending portion of the tag is arranged to project from the flange at the outer side 43 thereof, thus permitting the tag to readily clear the bead.

We claim:

1. In structure of the character described, the combination of a bung hole ange for a metal container, said flange being provided with a recess extending inwardly from the outer periphery thereof, with a seal anchoring tag, said tag having a portion with a notched edge seated in said recess and a portion remote therefrom provided with a sealing wire receiving eyelet, the portions of said bung hole flange defining the sides of said recess being swaged over and against said notched edge of said tag and partly over the outer face of the same with some of the material of said portions lling the notch and forming a locking engagement between said tag and the side wall of said recess, whereby said tag is located against movement in any direction.

2. In a closure receiving bushing for application by pressing to a container wall defining an opening therein, a laterally extending flange on said bushing designed to overlie the container wall stock around the opening therein to secure a gasket in place against such stock, means on said bushing to form a non-rotatable engagement with said container wall stock to prevent rotation of the bushing, said flange being recessed at a position spaced from said gasket seat and from the means preventing rotation and a sealing tag having a securing end and a sealing wire receiving end, said securing end being formed for reception in said recess, the stock of the side Walls of said recess being swaged over and against the securing end of said sealing tag to secure the same in the recess and the portion of said sealing tag continuing from said secured portion extending directly away from the confines of the flange, whereby said bushing with said sealing tag already secured thereto may be pressed in place in said container wall opening without interference between said sealing tag and the pressing mechanism employed.

RICHARD S. RHEEM. HORACE C. BROWN. ARTHUR J. ALLEN.

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