US1698993A - Closure and method of making the same - Google Patents

Description

Jan. 15, 1929.

E. L. GREENEWALD- CLOSURE AND IIETHOD OF MAKING THE SAME Filed Feb. 19, 1921 d OO Q 9 00 JNVENT OR; I I.

Patented Jan. 15, 1929.

UNITED STATES EUGENE L. GREENEWALD,

OF BROOKLYN, NEW YORK.

CLOSURE AND METHOD OF MAKING THE SAME.

Application filed February This invention relates to closures and methods or making the same, and has particular reference to an improved two-piece threaded closure and to the method of making it, but certain features of the invention may be employed in connection with other types of closures.

The principal object of this invention is to economically produce a closure of the deep skirt or flan e type from sheet metal that has been decorated, lacquered or enamelied in the sheet or fiat.

The above and other objects and the novel features of this invention will be apparent from the following description taken in connection with the drawing which constitutes a part of this application and in which Figs. 1 and 2 are plan and perspective views, respectively, of the blanks employed in making one form of the improved closure;

Fig. 3 is a central longitudinal sectional view illustrating the body blank and top blank assembled preparatory to uniting them;

Fig. 4: is a central longitudinal sectional View of a completed closure embodying this invention;

Fig. 5 is a transverse sectional view of the closure, taken on the line 55 of Fig. 4; and

Fig. 6 is a view of another closure embodying principles of this invention, the view being partly in longitudinal section and partly in side elevation.

As shown, the closure is made of two pieces 35 of sheet metal, desirably of thin gage, about No. 36 to No. 30 gage lacquered or enamelled on one or both surfaces and provided with other decoration or advertising as desired. The body blank B, which is formed into the 4.0 cylindrical body, skirt or flange of the closure, is cut from suitable sheet metal, as described and is initially of substantially rectangular outline, desirably having integral tongues 10 and 11 at opposite ends thereof ea leaving cutout portions or notches, and par- Y allel longitudinal edges 12 and 13 between such notches.

Before the blank B is formed into cylindrical shape, and desirably at the same time that it is cut from the sheet, suitable means may be formed therein to provide the means for coupling the closure to a container when the same is completed. As shown, parallel rows of round spot indentations I and I may be stamped or otherwise pressed into the blank 19, 1921. Serial No. 446,315.

B to produce rounded spot beads or projectrons projecting from one face of the blank. The row of indentations I extends from a point adjacent the longer edge 12 and short of the tongue 10 transversely of the sheet at an angle to the edge 12 and to'a point short of the tongue 11. The row of indentations I is spaced from and parallel to the indentations I and the indentations in the two rows may be staggered or not, as desired. The size or the indentations and beads and the distance between the rows and between the beads in each row, as well as the gage of the metal, are such that no substantial resistance will be offered to the bending of the blank into substantially true cylindrical form. In-

asmuch as the metal may be quite thin, i. e. from about 8 to 12 thousandths of an inch, or thinner, and the indentations I and I do not extend a material distance longitudinally of the strip, they do not stiffen the metal and the blank may therefore be bent quite readily and accurately.

At the same time that indentations I and I are formed in the blank B, other depressions E are also stamped or otherwise pressed into the blank. The depressions E may be of any desired shape and depth so as not to interfere with the bending of the blank and may project from either face of the blank, but for advantageous reasons they are narrow or elongated and form elongated ribs or beads projecting from the same face of the sheet as the beads corresponding to the indentations I and I. The indentations E are spaced apart and parallel to each other, and are arranged in a row that is parallel to and near the edge 13 of the blank and terminates short of the tongues 10 and 11. The arrangement and spacing of the indentations E and the corresponding ribs or beads is such that they will not interfere with bending of the blank into cylindrical form and the upper rounded ends thereof substantially terminate in a line that passes through the edges 10 and 11 of the tongues 10 and 11.

The blank B is now bent into a cylindrical body by suitable mechanism and the tongues 10 and 11 are secured together and locked in a suitable manner, as for example by an intertolded seam S, as indicated in Figure 5, in which the raw metal edges are completely covered and concealed. The blank B is so bent that the rows of indentations or beads project inwardly radially toward the axis of the a closure is to be coupled, the rounded heads fitting in the groove of the thread on the receptacle. The thread thus formed is an interrupted one but the beads are sufiiciently close together to {tilfild the frictional holding engagement for the purpose desired.

The upper ends E of the ribs formed by indentations E provide an interior shoulder djacent but below the upper circular end 13" of the body B formed from the blank B. The top T maybe seated and held against this shoulder when it is united to the body B. As shown in Figs 2 and 3, the top blank T is circular and desirably cup-shaped, having a flange that is or" substantially less width than the distance between the shoulder means E and the upper end 13 ot' the body B.

Referring to Figs. 3 and i, it will be noted that the upper edge 13 otthe body is folded inwardly over and within the flange T of the top blank to cover and conceal its edge and the edge T" of the latter. The rounded upper ends E cooperate with the opposing edge of tie top to clamp the latter into place and hold ittightly. The central part of the top blank may be crowned out so as to better co er and conceal the raw edge 13 of the body, and also to bring the enamelled or ornamented surface of the top flush with the upper end of the completed closure. The inward indentations E provide a circular knurled portion on the exterior of the closure which serves as a grip whereby the closure may be more readily turned to screw the same onto and off of a receptacle. The lower edge of the body l may be rolled to form a bead, at 12, 4, to eliminate the sharp edge of metal and to conceal and cover the'raw metal edge thereat.

It will be understood that in some closures the body blank may be stamped with only the indentations E and a thread may be rolled or otherwise formed therein after the blank has been formed into a cylinder; and in some closures the blank may be stamped with only the indentations l, l. and the indentations may be formed after the blank he. formed into a cylinder, or they may be omitted. In the mo ification shown in Fig.3. 6 the indentations have been omitted from the skirt portion and the top P initially consists of a fiat circular sheet metal blank, desirably lacquered or enamelled or decorated,

and is applied to the body B by corrugating and simultaneously bending down the peripheral portion p of the top to provide a corrugated flange P which is bent inwardly under an exterior shoulder provided by a rolled head 13 at the upper end of the body B. The cylindrical body B may be depressed inwardly as at D so that the corrugated portion P maybe disposed in an annular depression and flush with the exterior of the main portion of the body l3 and also so that the raw edge of the top flange P may be covered and concealed. .lnasmuch as no interior shoulder is required in this term of closure and since the corrugations P provide a suitable gripping surface, the indentations E are not formed in the body blank of this closure. Otherwise the closure of Figure 6 is formed similarly to the one disclosed in Figs. 1 to 5 inclusive.

The invention is shown as embodied in a bottle cap adapted for use on catsup bottles and'the like having screw threaded necks, but may also be embodied in other types of bottle and jar closures. While the blank B shown is substantially fiat, it will be understood that the same may initially be given a suitable concavity or convexity by means of a suitably shaped punch and cooperating die and cutter which comprises the means forming this blank.

The closures disclosed maybe made by other methods and other changes may be made in the closures and methods disclosed without departingfrom the spirit of this invention or sacrificing any of the advantages thereof.

This application is a continuation in part of applications Serial No. 22653 and Serial No. 89078, which have become Patents Nos. 1,405,112 and 1,427,683, respectively.

I claim:

1. A two-piece closure comprising, in combination, a cylindrical body formed from a substantially rectangular sheet of metal having spot indentations therein adjacent one end thereof providing means for coupling said closure to a receptacle, said body also having interior shoulder means adjacent the other end thereof, and a top bearing against said shoulder means and secured-to and closing said other end of said body.

2. A two-piece closure comprising, in combination, a cylindrical body "formed from a substantially rectangular sheetof metal having spot indentations therein adjacent one end thereof providing means for coupling said closure to a receptacle, said body also having a circular row of indentations providing interior shoulder means adjacent the other end thereof, and a top bearing against said shoulder means and secured to and closing said other end of said body.

3. A two-piece closure comprising, in combination, a cylindrical body formed from a substantially rectangular sheet ot-Inetal having one or more rows of spot indentations therein extending from adjacent a longer side thereof transversely of said sheet and providing helical threadlike means at one end of said body for coupling said closure to a threaded receptacle, such sheet also having a row of indentations nearer the other longer edge thereof forming shoulder means adjacent the other end of said body, and a top bearing against said shoulder means and secured to and closing said other end of said body.

4. A two-piece closure comprising, in combination, a cylindrical body having ahelical row of inwardly projecting spaced spot indentations extending from adjacent one end of said body toward the other end forming means for coupling said closure to a threaded receptacle, said body also having a circular row of inwardly projecting spaced indentations adjacent said other end thereof providing an interior shoulder, and a top bearing against said shoulder and secured to and closing said other end of said body.

5. A two-piece closure comprising, in combination, a cylindrical body formed from a rectangular sheet of metal having one or more rows of spot indentations extending transversely of said sheet from adjacent a longer edge thereof and forming a helical means on said body for coupling said closure to a threaded container, said sheet also having a row of indentations nearer the other longer edge thereof and elongated parallel to the shorter edges of said sheet and arranged so as to form an interior shoulder means on said body, said shorter edges being interlocked to unite the same and conceal the raw edges thereof, a top member bearing against said shoulder means and having itscedge interlocked with the adjacent edge of said body to secure the top to said body and also conceal the contiguous raw edges of said top and body, and a rolled bead formed of the lower end of said body to conceal the raw edge thereof.

6. The method of making a closure, recep tacle or the like, that comprises forming a substantially rectangular blank having a row of indentations adapted to form shoulder means, forming said blank into a cylindrical body with such indentations projecting inwardly to form such shoulder means, and seating a top blank against such shoulder means and securing such top blank to said body.

7. The method of making closures that comprises forming a substantially rectangular blank having a row of indentations adapted to form shoulder means and another row of indentations adapted to form helical thread-like means, forming said blank into a cylindrical body with such indentations projecting inwardly to form such shoulder means and such helical thread-like means, seating a top blank against such shoulder means, and securing said top blank to said body.

8. The method of making a twopiece closure that comprises separately forming a circular top blank and a substantially rectangular body blank, forming in said body blank a row of spot indentations extending transversely thereof from adjacent one of its longer edges and another row of indentations substantially parallel to and nearer the other longer edge of said body blank, forming said body blank into a cylindrical body and uniting the shorter ends thereof whereby said spot indentations form a substantially helical thread-like means and said other indentations form shoulder means and grip means, seating said top blank against said shoulder means, and securing said top blank to said body.

9. The method of making a closure that comprises separately forming a substantially circular top blank and a substantially rectangular body blank, forming in said body blank a row of spaced spot indentations ex tending transversely thereof from adjacent one of its longer edges and another row of spaced indentations substantially parallel to and nearer the other longer edge of said body blank, all such indentations providing corresponding projections projecting from the same face of said blank, forming said body blank into a cylindrical body with said projections extending inwardly, uniting the shorter edges of said blank whereby said spot indentations form a substantially helical means adapted to couple the closure to a threaded container and said other indentations form interior shoulder means and exterior grip means on said body, seating said top blank against said shoulder means, and securing said top blank to said body.

10. The method of making a closure, receptacle or the like that comprises forming a substantially rectangular blank having a row of indentations adjacent and substantially parallel to one edge thereof adapted to provide shoulder means, forming sai-d blank into a tubular body with such indentations projecting inwardly to form such shoulder means, forming a cup-shaped cover part having a flange, seating said cover part against said shoulder means, and securing said cover part to said tubular part and concealing the contiguous edges of said flange and said body.

In testimony whereof, I afiix my signature.

EUGENE L. GREENEWALD.

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