US1952813A - Closure for containers - Google Patents

Description

March 27, 1934. A. McDowl-:LL

y CLOSURE FOR CONTAINERS Filed Oct. 16

mw T64 ATTORNEY A O f me WM. lf r 6 A BYJ WITNESS Patented Mar. 27, 1934 sraras FATNT GFFICE one-half to Joseph Application October 16 1 Claim.

This invention relates to a closure for jars, bottles, cans and the like.

A primary object of the invention is to so construct a closure of this character that it may be easily and quickly applied to any container and which provides for the easy removal and insertion of the stopper to provide for its repeated use Without injury either to the container or the stopper.

Another object of the invention is to so construct a device of this character that it will close the container air tight without necessitating the use of solder or sealing material and which presents practically no obstruction to the pouring l, out of the contents of the container.

A further object of the invention is to carry out an improved method of making a closure, said method including an expansion of the container by heat, thus to enable the insertion of a 2O collar of virtually the same outside diameter as the inside diameter of the container, said collar being externally lacquered to form a seal with the container.

In carrying out these objects, the invention is susceptible of a wide range of modification without departing from the spirit or sacrificing any of the advantages of the claimed invention; there being shown in the drawing for illustrative purposes a preferred and practical form, in which:

Figure 1 is a vertical section of a container equipped with this improved closure;

Fig. 2 is a similar View showing a slightly different form thereof;

Fig. 3 is a similar view With the lower portion -of the container broken off and showing still another form of the invention; and

Fig. 4 is a plan View of the closure shown in Fig. 3.

In the embodiment illustrated in Fig. 1 a metal can 1 is shown having the usual soldered on bottom 2. This can 1 is shown of uniform diameter throughout and mounted in the mouth 3 thereof is a sleeve or collar 4 designed to iit snugly within the can mouth and to extend above the edge thereof, being provided at its terminal edge with a rolled bead 5. This collar 4 above the can is preferably iiared for a purpose presently to be described.

In applying this collar to the can the can is inverted and the mouth portion thereof heated and While still hot the collar 4 is inserted therein it preferably having been rst coated on its outer face with lacquer to provide an air tight joint between the two. When the can cools it will firmly grip and hold the collar therein. These Steps Hajos, St. Louis, Mo.

, 1929, Serial No. 400,007

are part oi an improved method of making a closure, it being apparent that the heating of the can enables the iitting in of a collar virtually the same in outside diameter as the internal diameter of the can. The hot metal rst causes the lacquer to flow, later causing it to form a very effective seal.

Mounted Within the collar 4 is a can top or closure 6 shown in the form of an inverted cap or cup-shaped member, the top bottom 7 thereof having rising therefrom an annular` body portion 8 which is flared outwardly to adapt it to t snugly Within the iiared portion of the collar 4. The body portion 8 of the top is designed to project above the collar 4 when the top is applied as shown clearly in Fig. 1 and has a rolled outturned bead 9 around its edge to stiffen and strengthen it and which rests on the bead 5 when the cap is inserted. When this top 6 is slipped into the collar 4 and forced down an air tight connection between it and said collar will be formed. To open the can all that is necessary is to slip a screw driver or other sharp instrument between the beads 5 and 9 lifting the top little by little and moving the instrument slowly around it in the usual way so that the top may be removed without injury either to it or to the collar.

A can closure constructed as herein shown and described has no shoulders or offsets so that no material is caught and held as is usual with cans having shoulders at the connection of the top therewith, which eiiects a great saving in material.

This construction of can closure is especially adapted for use in paint cans and syrup cans and the like since the cap 6 may be removed and replaced as often as desired Without any danger of damage to either the top or the can.

In the form shown in Fig. 2 the construction is the same as that illustrated in Fig. 1 except that the top 6a has a central opening 10 in the bottom Ia thereof for thelpassage therethrough of a stem 11 of a paint brush 12. The upper end of the stern 11 beyond the outer face of the top 6a is provided with a handle 13 of any desired size and construction and which is designed to rest on the bottom of the top 6a and form an effective closure for the opening through which the brush proper passes.

In the form shown in Figs. 3 and 4 the closure constituting this invention is shown applied to the mouth of a glass jar 14 which is equipped with the usual bead 15 and in which the collar 1a is inserted and secured by lacquer which is placed on the outer face of the collar before it is slipped into the jar mouth. The top 6b of this form of the invention has its bottom '7 radially corrugated as shown at 16 in Fig. 4 to strengthen the top and avoid all danger of its bulging.

The principle involved in the three forms illustrated is the same and When the tops are removed the contents of the container may be readily poured out through collar mouth thereof Without any material loss.

Without further description it is thought that the features and advantages of the invention Will be readily apparent to those skilled in the art, and it Will, of course, be understood that

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