US2089007A - Closure for bottles and jars - Google Patents

Description

1937- w. e. SKUTCH 2,089,007

CLOSURE FOR BOTTLES AND JARS Filed April 21, 1932 Patented Aug. 3, 1937 UNITED TES CLOSURE FOR BOTTLES JARS William G.

Owens-Illinois Glass of Ohio Skutch, Toledo, Ohio, assignor. to

Company, a corporation Application April 21, 1932, Serial No. 606,702

2 Claims.

The present invention relates to improvements in closures for bottles and jars and more particularly to closures consisting of inner and outer metal caps secured together. In this type of closure the inner cap is provided with attaching means intended for holding engagement with threads or the like on bottles or jars, while the outer cap is perfectly smooth, providing for suitable surface decoration.

The principal object of the present invention is the provision of simple and effective means to insure against relative rotation of the inner and outer caps after they have once been assembled. The objections to such relative rotation of these caps while the closure is being applied to or removed from a container, are entirely obvious.

Another object is the provisionof means whereby the skirt or flange portions of the inner and outer caps may be securely locked together without to any degree distorting the screw threads or other attaching means provided on the inner cap. To this end the lower margin of the inner cap is deformed to provide an irregular contour and the skirt on the outer cap is folded around this deformed area and pressed into engagement therewith so that the margins 01. both skirts as sume somewhat the same general irregular shape.

Other objects will be in part apparent and in part pointed out hereinafter.

In the drawing:

Fig. 1 is a fragmentary side elevational view showing the closure applied to a jar.

Fig. 2 is a vertical sectional view of the closure.

Fig. 3 is a sectional view of the outer cap prior 5 to the assembly operation.

Fig. 4 is a sectional elevational view of the inner cap.

Fig. 5 is a fragmentary detail sectional view showing the manner in which the two skirts are secured together.

Fig. 6 is a fragmentary sectional view taken along the line VI-VI of Fig. 5.

The illustrated form of closure consists of an inner cap I0 and an outer cap ll adapted to be telescoped one over the other and securely fastened together. These caps may well be formed 'of suitable sheet metal as is customary.

The inner cap consists of a circular top l2 and a depending continuous skirt l3 or attaching flange, the latter provided with screw threads I or the like, for holding engagement with projections such as threads (not shown) on a Jar IS. The lower margin l6 of the tl'n'eaded skirt I3 is of somewhat greater diameter thanthe main portion of the skirt, and, as will be noted, par-= ticularly in Figs. 2 and 5, consists of a straight depending wall I! at the outer margin of a substantially horizontal ledge l8. This depending wall I7 is deformed preferably in a fashion to provide a continuous series of corrugations I!) or 5 ribs, which constitute part of means for securing the'inner and outer caps together as will be apparent presently. If preferred, these corrugations may well be formed on the skirt of the outer 10 ed skirt l3 on the inner cap and is adapted to 15 have that portion extending below the inner cap flange folded inwardly and upwardly around said depending wall I! and then subjected to such a degree of outward pressure that it assumes to some extent, at least, the form of the corrugations I9. In this manner the two caps will be positively secured together and relative rotation thereof will be impossible. Such folding of the inner cap flange also forms an internal bead which gives the lower margin of the closure a finished appearance.

It is customary in the manufacture of closures of this character to suitably decorate or ornament the exterior surface of the outer cap which is perfectly smooth.

Modifications may be resorted to within the spirit and scope of the appended claims.

What I claim is:

1. A closure comprising an inner cap having a circular attaching flange provided with screw threads, said threads terminating at a point short of the lower margin of the flange, said flange having that portion below the threads directed outwardly and thence converging downwardly forming a continuous channel substantially L-shaped in cross-section, and an outer cap arranged over the inner cap and including a continuous fiange, said flange having its lower end folded inwardly and upwardly to provide a continuous bead into which the downwardly converging portion of the attaching flange projects, said downwardly converging portion being at least in part deformed and said head being compressed sufiiciently to cause the upwardly folded portion to substantially assume the shape of the deformed areas and thereby'secure the caps against relative rotation, the exterior portion ofsaid bead'having a smooth outer surfacefree from deformed areas or areas conforming to the def- Ormation of said downwardly converging portion.

2. A closure for a. container comprising an inner cap and an outer shell each having a top and a depending skirt, the skirt of the inner cap being provided with a spiral groove and hav- 5 ing its edge portion corrugated, the corrugations running longitudinally of the skirt, the inner diameter of the sldrt of the shell being substantially equal to the outer diameter of the corrugated portion of the inner cap, the edge por- -shell being smooth in the area opposite the corrugated portion.

WILLIAM G. SKUTCH.

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