US2202021A

US2202021A - Container closure

Info

Publication number: US2202021A
Application number: US745714A
Authority: US
Inventors: Ferdinand W Nitardy; Ralph S Westgate; Stanton E Werner
Original assignee: ER Squibb and Sons LLC
Current assignee: ER Squibb and Sons LLC
Priority date: 1934-09-27
Filing date: 1934-09-27
Publication date: 1940-05-28
Anticipated expiration: 1957-05-28

Description

an exceptionally tight and reliable seal.

Patented May 28, 1940 UNITED STATES PATENT OFFICE CONTAINER CLOSURE poration of New York Application September 27, 1934, Serial No. 745,714

6 Claims. (Cl. 22061) It is the object of this invention to provide a form and arrangement of parts that shall yield Further objects and advantages will be mentioned in, or will be apparent from, the following description.

The invention comprises a sheet-metal container having a spout terminating in an upwardly-extending margin, a supporting ring internally of the spout margin, and a cap of relatively soft metal with an annular flange interposed between the spout margin and the ring. Preferably, the spout, which may be generally conical or cylindrical, has an internal shoulder immediately below its margin, and the latter has a curled edge; and preferably the ring has an exterior circumby stamping from sheet metal, cutting from tubing, forming and welding bands (both sides of which may be folded outwardly to give the exterior circumferential groove), or by any of numerous other well-known methods.

When the cap and the ring have been placed in position within the spout margin, mutual approximation of the spout margin and the ring is effected-in ways familiar to those skilled in the art, as by external pressure'upon the former (to constrict it) or-internal pressure upon the latter to expand it): for example, the constriction of the spout margin may be accomplished by means of revolving and rotating rollers-employing apparatus of the general type described in Westgate and Behr application-Serial No. 246,008, filed J anuary 11, 1928-which rollers may have flat or concave edges to force inwardly the curled edge of the spout margin, or comparatively sharp edges to force inwardly the middle of the spout margin; and the expansion of the ring may be accomplished by means of a suitable expanding tool inserted within the ring and brought to bear against its interior surface.

In consequence of such mutual approximation, the cap flange is tightly confined, and completely fills an annular space, between the spout margin and the ring, and is thus caused to act as a gasket impervious to liquids, vapors, and gases, insuring a perfect seal. I

Access to the contents of the sealed container may be had by excising the cap along the inner edge of the ring or by transfixing the cap at two points with a needle (for dropwise-dispensing), The understanding of the objects, advantages, and practice of the invention will be facilitated by reference to the accompanying drawings, representing fragmentary diametrical sections of container closures embodying the invention:

Figures 1, 3, 5, and 7 being views of several modifications, with the parts loosely assembled; and

Figures 2, 4, 6, and 8 being views of the same modifications, respectively, with the spout margin and the ring mutually approximated.

In the drawings, l designates the spout of a sheet-metal ether container having a conven tional body, and II is an internal shoulder, from which the spout margin I2 extends. Within the spout flange is a ring I3 and between the two is the annular flange I4 of the soft-metal cap l5. In Figures 1, 5 and 7 the ring has initially an exterior circumferential groove IS; in Figures 1, 2, 3, 4, 7, and 8 the ring is a folded band. In Figures 1,2, 3, 4, 5, 6, '7, and 8 the spout margin terminates in a curled edge, as at H. The forms shown in Figures 1, 5, and '7 are sealed by external pressure applied upon the spout margin by means of sharp-edged rollers that produce the external circumferential groove l8; and the form shown in Figure 3 is sealed by internal pressure upon the ring by means of an expanding tool that produces the internal circumferential groove l9.

It is to be understood that the foregoing description and examples are merely illustrative and by no means limitative of the invention, which, as will be obvious to those skilled in the art, may

be variously otherwise embodied within the scope of the appended claims.

We claim:

1. In a sheet-metal container, a spout having an upwardly-extending, pressure deformable margin, a supporting ring internally of the spout margin and; having an exterior circumferential groove, and a cap of relatively soft metal with an annular flange interposed between the spoutmargin and the ring, the spout margin having been approximated to the ring by external pressure upon the spout margin to produce a circumferential groove therein. I

3. In a sheet-metal container, a spout having an upwardly extending, pressure deformable margin, a supporting ring internally of the spout margin and having an exterior circumferential groove, and a cap of relatively soft metal with a downwardly extending annular flange interposed between the spout margin and the ring, the spout margin having been approximated to the ring by external pressure upon the spout margin to produce a circumferential groove therein.

4. In a sheet-metal container, a spout having an upwardly extending, pressure deformable margin, a supporting ring internally of the spout margin and having an exterior circumferential groove, and a cap of relatively soft metal with an annular flange interposed between the spout margin and the ring, the ring being concealed from external view, and the spout margin having been approximated to the ring by external pressure upon the spout margin to produce a circumferential groove therein.

therein.

5. In a sheet-metal container, a spout having an internal shoulder and a pressure-deformable margin extending upwardly therefrom, a supporting ring internally of the spout margin and having an exterior circumferential groove, and

a cap of relatively soft metal with an annular flange interposed between the spout margin and the ring, the cap and ring being supported on the shoulder, and the spout margin having been approximated to the ring by external substantially deforming pressure upon the spout margin.

-6. In a sheet-metal container, 2. spout having an internal shoulder and a pressure-deformable margin extending upwardly therefrom, a supporting ring internally of the spout margin, resting on the shoulder, and having an exterior cireumferential groove, and a cap of relatively soft metal with a downwardly extending annular flange interposed between the spout margin and the ring, the spout margin having been approximated to the ring by external pressure upon the spout margin to produce a circumferential groove FERDINAND W. NITARDY. RALPH S. WESTGA'I'E. STANTON E. WERNER.