US1473411A - Bung structure for metal barrels and the like - Google Patents

Description

Nov. 6 1923. 1,473,411

F. G. WACKER BUNG STRUCTURE FOR METAL BARRELS AND THE LIKE Filed Feb. 25, '1921 Patented Nov. 6,1923.

UNITED STATES FREDERICK G. WACKER, OF CHICAGO, ILLINOIS.

BUNG STRUCTURE FOR METAL BARRIES AND THE LIKE.

Application filed February 25, 1921. Serial No. 447,844.

To all whom it may concern:

Be it known that I, FREDERICK G. WACKER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bung Structures for Metal Barrels and the like, of which thefollowing is a specification.

In the construction of metal barrels, it is usual to provide in the head or body, means for filling and emptying the receptacle. The usual construct-ion is to weld a threaded ring to the head sheet and screw into said ring the bung or closure with proper acking between the sealing surfaces 0 the moveable and fixed members. The welding of such a ring is an expensive and tedious operation, and an object of my invention is to provide a bung construction that will dispense wit-h welding as a means of insuring tightness of the barrel at the bung-ring. Furthermore it is customary to provide the bung-ring on the exterior of the barrel where it is particularly subject to damage, and the resultant ring injury, often met with in practice, is one of the principal causes of the barrel-loss, for commercially it is found to be so expensive as to be impractical to remove the welded bung-ring and replace it with a new one. Distinctively, I place the bung-ring inside of the barrel.

In the drawings wherein I have illustrated the structure embodying my invention Fig. 1 is a vertical cross section with parts in elevation showing one form of construction; Fig. 2 is a horizontal section on line 22 thereof; Fig. 3 is a detail; Fig. 4 is a vertical section showing another form of construction and Fig. 5 is a plan vie thereof.

The head-sheet has an aperture made therein, surrounded within the barrel by a ring 11 secured against rotation by suitable attachment to the head-sheet, so that a portion 13 of the head-sheet itself is presented as a seat to receive'the packing that is pressed down by a compression flange 15 of the bung or closure 16, the threaded stem portion whereof engages the threaded lower portion 18 of ring 11. With this construction it will be apparent that tightness of union in the sense of liquid-proofness as between the ring and the head-sheet is not necessary, as the sealing takes place between the head-sheet and the compression flange of the bung.

The ring preferably provides at its top an annular boss portion 19 over and upon which the head-sheet may be smoothly shaped to give a flat bearing 13 and a strengthenin head 20. The ring may, without any welding, be attached adequately to prevent it from rotating and in Figures 1 to 3 such ring is shown as formed with a chamber 22 above its threaded portion this chamber being of greater diameter than the threaded portion and terminating near its bottom in a lateral groove 23, into which may project radical points 24, so that the metal at the lip of the orifice may be spun down the wall of chamber 22 and into groove 23, the points '24. (if provided) indenting the under-turned metal and aiding in preventing rotation of the ring. Sufiicient union to prevent rotation may be secured by the spinning without the presence of the points, and other means of preventing rotation may be used. As shown in Fig. 4 the ring l1 may have a flange 25 spot-welded as at 26 to the head-sheet 10, the lip of the orifice in the head-sheet being merely spun over the boss 19' into the chamber 22'.

It will be understood by those skilled in the art that many other changes in construction ma be made without departing from the spirlt of my invention, within the scope of the appended claims.

I claim:

1. The combination of a metallic barrel having in its sheet metal wall an orifice, a ring within the barrel surrounding the orifice having therethrough a passage, opened toward the axis of the ring, and being of two diameters, the lower portion of smaller diameter being screw-threaded internally and the upper portion of larger diameter constituting a chamber, the lip of the orifice in said wall being turned into said chamber, means securing the ring against rotation in the barrel wall, and a bung having a sealing head to co-act with the barrel wall bordering said orifice and having a threaded stem to engage the threaded portion of the ring.

2. The combination of a metal barrel having in its sheet-metal wall an orifice, a ring within the barrel surrounding the orifice, said ring having therethrough a passage open toward the axis of the ring and comprising a lower portion of smallest diameter screw-threaded internally, an upper portion means securing the ring against rotation of larger diameter constituting a chamber in the barrel-wall, and a hung having a and an annular groove of largest diameter sealing head to coact with the barrel-wall 10 forming a bottom enlargement of said bordering said orifice and having a threaded 5 chamber, the lip of the orifice in said stem to engage the threaded portion of the barrel-wall being turned into said ohamring. v her and under-turned into said groove, FREDERICK G. WAGKER.

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