US954406A - Method of sealing bottles and other vessels. - Google Patents

Description

'entran srarss PATENT carica EARL PORTER WETMORE, OF NEW YORK, N. Y., ASSI'GNOR TO STERLING CORK AND SEAL COMPANY, A CORPORATION F DELAWARE.

Specification of Letters Patent,

Patented Apr. 5, 1910.

v.Allplication led November 10,l 1908. SerialNof-IGLMB.

1 To all whom t may concern:

' blank, and

Be it known that I, EARL PORTER WET- MORE, of New York city, in the county and State of-New York, have inventedan Improved Method of Sealino1 Bottles and Vother Vessels, of which the following is a specifi` cation.

This invention has relation to an improved methodof sealing bottles. r

In carrying outv my invention, I provide a sealing cap formedV from a sheet metal consisting of a crown portion, a smooth pendent annular skirt portion, and a corrugated,substantially horizontal flange or extension.v The'cap in this form is then placed loosely upon the bottle head, having avprojecting lockingshoulder, and an annular-bending or drawing die having an interior diameter which is equal to, `orslightly less than, the diameter of the skirt portion The action ofthe cap is forced thereover.

of this die bends downwardly the corrugated,

horizontal flange on the line of its junction with the smooth skirt portion, and brings said iiange to a substantially vertical position to form a cylindrical extension of the pendent-skirt, portions of the eorrugations being lforced inwardly underneath the locking` shoulder on the bottle. The smooth pendent skirt portion, fiange portion, being of different degrees of rigidity, the die causes the flange to bend downwardly along' the line of junction betweenthese two portions, and which is a line of substantiall uniform resistance.

Inpthe drawing forming a part hereof, Figure lis an exterior edge view of the sealing cap as* it appears after the first step in its manufacture, or as when stamped from a blank, and Fig. 2 a top view of the same. Fig. 3 showsthe incomplete cap in vertical section, and seated on a bottle head, with a drawing die above it. Fig. 4 illustrates the together with the die and complete cap,

the coneluslon bottlel as they appear upon of the drawing operation.

Referring now to ,the drawing, 1 isv the crown, Q. the skirt, and 3 the horizontallyextending circular corrugated flange of the incomplete cap as that device appearsv be-v fore the final step in its formation in which the said flange is drawn to cylindricalv form.

5 represents the simplest form of drawing tool or die, and 7 the bottle head.

Fig. 4 shows the position of the parts after engagement of all of them. and the corrugated the die has completed its action, as above described. From this figure it will be seen that the flange 3 has been forced downwardly to a position in which itfforms a vertieal'ext'ension 3 of the skirt, land that portions of the corrugations have been forced 'inwardly underneath and in locking enga ement with the locking shoulder B of t eI bottle head.

It will be seen that the corrugated locking flange 3 of the cap is of appreciably greater rigiditytha'n is the uncorrurrated skirt portion 2; and that when said ffange is bent downwardly from the position shown in Fig. 3 to the position shown in Fig. 4, the bend naturally occurs on the circular line which forms the junction of these two members 2 and Bland at the inner ends'of the corrugations, instead of across them. This gives a bending pointof substantially uniform resistance throughout the circumference. This notv only makes the bend occur much more easily, but it permits of a substantially uniform contraction of the flange as its-diameter is decreased during the bending operation. The result is a substantially unlform forcin inward ofV all the corrugations and a sustantiallyuniform locking The bending' line of uniform resistance also permitsI the locking flange to adapt itself to varying sizes and irregularities of the bottle heads. By this method of bending, comparatively little inward radial pressure is required. This obviates to a very large degree' the breakage of the bottles, which has occurred' with the methods heretofore employed. It also permits of the application of the invention to other vessels besides bottles; that is to say, vessels such as fruit jars, jelly glasses, and like vessels having mouths of relatively large diameter.

It will be understood that the relation which vthe corrugated portion of the skirt bears to the shoulder ofthe bottle, at the 100 I do'not therefore confine my invention to vessels with caps having a crown, pendent 11G lbringing the sealing Av cap and bottle head skirt and substantially horizontal ooiru gated liangeat the base of .the skirt, which consists in bending,` the liange downward on a line formingthe junction between the skirt and flange into substantiallyA vertical posi. tionfthus engaging the corrugationsI with 'the Shoulder on the bottle.

` 2. The method of sealing bottles @und` other vesselsv withA caps having a crown, pendent skirt 'and substantially horizontal 'corrugated a'nge at the base of the Skirt, which winne consists in bending the flange downwardly *I -on the line of junction between the skirt I and lange into substantially vertical position over a locking shoulder on the bott-1eand at 15 the same time confining the ange externally to force the Corrugations inwardly underneath said shoulder:

EARL PORTER WETMORE. Wtnessem MAE. E. DEY, JOHN P., SCHNEIDER.

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