US 1242742 A
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Description (OCR text may contain errors)
H. E. TOWNSEND.
" Patented Oct. 9,19n.
ATTORNEYS STA'L D 1 3 1 S IfnilENT OFFICE.
HABQRY E. TOWNSEI TD, OF BROOKLYN, NEW YORK, ASSIGNOB TO THE ANCHOR CAP &
GLOSIIBE cdnronanox, 0F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.
SEALING-CLOSURE WITH REMOVABLE GASKET.
Specification of Letters Patent.
Patented Oct. 9, 1917.
Application filed January 10, 1917. Serf ".1 No. 141,551.
To all whom it may concern:
Be it known that I, HARRY E. Townsnnn, a citizen of the United States, and a resident of the city of Brooklyn, in the county of Kings, State of New York, have invented certain new and useful Improvements in Sealing-Closures with Removable Gaskets, of which the following is aspecification.
This invention relates to scaling closures adapted to be applied to glass containers and the like and has particular reference to the type oi closure disclosed, in my prior Patent No. 1,159,624, and in my application for Patent Serial No. 141,552, filed the 10th day of January 1917, and constitutes a further development in the art of this type of closures and upon which this invention is an improvement.
The princlpal object of this invention is to provide a closure wherein the lacquer skin is not destroyed by the sealing operation; wherein the seal is effected with a minimum amount of power; wherein still further variation in sizes of containers-is admitted thereby reducing breakage; and
also wherein provision is made enabling the seal to be easily and quicklybroken whereby the closure may be easily removed.
Other and further objects of the present invention will in part be obvious and will in part be pointed out hereinafter in the specification following by reference to the accompanying drawings wherein like parts are represented by like characters throughout the several views thereof.
Figure 1 illustrates a glass container sealed in accordance with this invention.
Fig. 2 is a detail view illustrating a crosssection through a 'prpl-tion of the sealing dies and the sealing clos 're prior to the sealing operation.
Fig. 3 is a view similar to Fig. 2 with the exception that the sealing operation is completed.
Fig. 4 shows the manner in which the gasket may be removed after the edge has been'llattenedor pounded as illustrated in Fi 5. %ig. 5 is a view showing. the distortion of the edge due to flattening of the bead by pounding or otherwise.
The closure is adapted to be seated on a glass container 1 which may be provided with a cylindrical sealing wall 2 adjacent thewlnmlfi t tion.
hereof, and said closure prior H to being sealed comprises a top portion 4 which, carries an annular bead having an upper wall 5, a side wall 6, and a slightly inturned edge 7. The annular bead pref-- erablyis disposed below the top 4 as by means of an annular rim 8 in order to en able the seal to be effected slighrly below the 11 per edge of the glass container since the e ges of the container in most cases in clude more irregulariLilw-s lhan the Thereof. The annular bead carries a gaslmt 9 comprising an annular rin; oi snii'ablo plastic material. The dies for forming the finished closure comprise an anvil (lie 10 which is provided with an inclined surface 11 and a vertical surface 12 which may be substantially parallel to the side wall of the container. The chuck or upper die 14 may be provided with a vertical supporting" Wall 15 and an inclined face 16 which may be substantially parallel to the inclined surface ll on the anvil member. The immediately foregoing descriptive mutter refers to the construction prior to the sealing operation.
The closure after being sealed comprises substantially an annular skirt 17 which forms the major support for the compressed gasket 9 and the excess metal which is dis torted during the sealing operation is formed intoa double walled inclined ring or shelf 18 which incloses but a very sin-ill amount of the gasket. 'lhc upper portion of the asket is supportul by the annular groove owned as at 19. It will be noted that this type of closure provides a relatively large amount of compressed gasket of substantially uniform cross-section, so that a larger ran from standard sizes is allowed so l ar as t e glass structure is concerned. Fur thermore, in this type of device a larger amount of the gasket is permitted to flow from between the forming dies so that the side wall final pressures are more nearly radial pressures, consequently requiring less power to close the sealing chucks, thereby utilizing less power in performing the sealing opera- Sinoethe deformation of the metal during sealing operation is substantially slilght, with the exception of the fold which to es place at. the corner between the sun faces 5 and 6 to form the double walled ring 18, it will b" evident that the lacquer on the surfaces .111 not be destro d.
Heretofore in the art of closures of this cover where the contents of the package are not entirely used up at once; and where a.
secure seal is effected against the side wall, the mechanical retaining power of the seal is so great that it is diflicult to force the head over the edge of the glass container even after the vacuum within the container has been destroyed. Because of the type of seal formed by the. construction herein previously described, a portion of the gasket may be substantially released by bending up, by pounding or otherwise, a portion of the annular ring 18, as shown in Figs. 4 and 5. In order to take advantage of this fact an opening 20 is provided in the annular skirt 1'? which enables the gasket to be forced downwardly as by means of the thumb, or suitable tool, (Fig. 4) to comprise the loop "21. After the loop 21 is formed the entire gasket may be stretched and removed from between the annular skirt 17 and the side wall. of the container 1. The for-min loop 21 breaks the vacuum, where t is closure is used in sealing packages under vacu' um, so that when the gasket is removed the cover may be easily and without effort lifted from the top of the unsealed container.
Having thus described my invention what I claim is l. A closure provided with an annular beading, a gasket having a portion thereof displaced laterall under compression against the side wal of the container, the bending having an annular ring comprising a portion of the metal folded upon itself with the sides thereof substantially parallel, and a skirt depending from said anhular ring and supporting the major portion of the said asket.
2. A cosure provided with an annular bending and a gasket displaced laterally under compression forces and against the side wall 'of the container, said beading having its upper wall in the form of a concave l groove with the lower wall substantially parallel thereto and a skirt depending from said lower wall portion of the gasket.
of the I and supporting the major 3. A closure comprising a top portion, 11 depending side well. an annular ring formed in said side wall and comprising a portion of metal folded upon itself, a dependin skirt below said annular ring, a gasket held under compression between the side wall of the container and the said skirt.
4. A closure comprising a cover portion, a side wall including a skirt, a gasket adapted to beheld under compression between the container and said skirt, and an annular ring formed from the excess metal displaced during the sealing operation, said annular ring being substantially devoid of portions of the gasket.
5. A closure com irising a cover portion adapted to fit over the mouth of a container, a gasket, a skirt adapted to support said gasket under compression against the side wall of the container, an angular ring adjacent said skirt portion and formed of the excess metal rom the sealing operation, said ring being substantially devoid of gasket material.
6. A closure comprising a cover member adapted to fit over the mouth of a suitable container, theside wall of said cover comprising a skirt, a gasket adapted to be maintained under pressure between said skirt and the side wall of the container, and an annular ringedjacent said skirt and being formed entirely from excess metal resulting from the sealing operation.
7. A closure comprising a cover member adapted to fit over the mouth of a suitable container and having a depending side wall a suitable gasket under pressure against the.
side wall of the container, said skirt being provided with a recess in the lower edge thereof, an annular rin abovesaid skirt and inclined thereto, said annular ring being formed of excess metal developed during the sealing operation,-the parts being constructed and arranged to ena lethe gasket to be removed when the annular ring is bent inwardly adjacent-the specified reoess.
HARRY n. TOWNSEND.