US1950294A - Metal closure - Google Patents

Description

Ma rch 6, 1934. L. R. N. CARVALHb METAL CLOSURE Filed Aug. 9, 1952' Patented Mar. 6, 1934 UNITED STATES PATENT OFFICE METAL CLOSURE Leslie R. N. Carvalho, Toledo, Ohio, assignor to The Closure Service Company, Toledo, Ohio, a

corporation of Ohio My invention relates to improvements in metal closures such as are commonly used with glass bottles and jars. More particularly, the invention is concerned with metal closures made up of two sections or caps arranged one within the other, the inner section having screw threads for engagement with threads or the like on a container while the outer section is perfectly smooth. In closures of this type some difiiculty has been experienced in preventing relative rotation between the two sections when the closure is being applied to or removed from a container.

An object of the present invention is the provision of novel and efiective means whereby the two sections of the closure may be rigidly secured together and positively held against any relative movement Whatever. To this end the invention consists in providing tabs or ears on one section and pressing these tabs into holding engagement with the other section.

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

In the drawing:

Fig. 1 is a vertical sectional view of a metal closure constructed in accordance with the present invention.

Fig. 2 is a side elevational view of the outer cap showing the tabs or ears thereon.

Fig. 3 is a detail sectional perspective view showing the manner in which the tabs secure the sections together.

Fig. 4 is a sectional view taken substantially along the line IV-IV of Fig. 1.

The metal closure 10 according to the illustrated embodiment of the invention, consists of an inner section 11 and an outer section 12 or cap. The inner section includes a circular top portion 13 and a depending continuous flange 14 in which screw threads 15 are formed. The outer section 12 or cap consists of a circular top portion 16 and a depending flange 1'7 which is somewhat deeper than the screw threaded flange. A series of tabs 18 or ears, may be provided at the lower margin of the flange 17.

In amembling the two sections or caps to form a complete. closure, that portions of the outer flange depending below the screw threaded flange is rolled inwardly and thence upwardly into snug engagement with the adjacent surfaces of the screw threaded flange. The tabs 18 are pressed into contact with the threaded flange and in most instances distort the lower portions of the screw threads 15 in a fashion to provide recesses 19 in which the tabs fit. Because these tabs 18 which are carried by the outer section. projects into recesses 19 or depressions formed in the flange of the inner cap, relative rotation between the two caps is positively prevented. As a result the closure may be applied to and removed from a container without difiiculty insofar as relative movement between the sections M is concerned.

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

What I claim is:

1. In a metal closure, an inner section in- W eluding a circular top portion, a depending threaded flange thereon, an outer section telescoped over the inner section and including a circular top portion, a flange depending therefrom, means securing the two flanges together consisting of an inwardly and upwardly turned portion of the outer flange having gripping engagement with the lower margin of the threaded flange, and tabs provided at the upper edge of said upturned portion of the outer flange and 855 pressed radially outward into the lower areas of the threads to thereby hold the caps against relative rotation.

2. A closure comprising inner and outer caps. each including a continuous flange, screw threads 90 on the inner flange, means for securing the two caps together including a portion of the outer flange turned inwardly and upwardly into holding engagement with the inner surface of the threaded flange, and tabs on and extending above the upper edge of said upturned portion and pressed into and distorting a part of the lower areas of said threads to thereby hold the caps against relative rotation.

LESLE R. N. CARVALHO.

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