US2271253A - Bottle closure - Google Patents

Description

Jn. 27, 1942. w. A. CONWAY. JR 2,271,253

BOTTLE CLOSURE Filed Nov. 8, 1938 Patented Jan. 27, 1942 BOTTLE CL'QSUR-E e WilliamQConwam lSharnrikir'nPa ,l n ApplieatioNovembr-i 8,193s, serially@ 395,571?` ThisI invention relates ytorclosnres 'for milk `loottles and belongs to. that type, of` closure known as hoods which include a skirt extending over the pouring lipand .overfa portion of the bottle neck to prevent vcontamination thereof by reason of exposure of theseparts.l n

'IfheV use of Vprotective has been general in recentyears. The hoods commonly in use today usually comprise constructions with which the ordinary disc stopper is used. Such Stoppers are sometimes applied under the hood structure, although some arrangements have been in use which employ stopper discs slightly smaller than those commonly used and which are adapted to be pressed into the mouth of the bottle over the hood structure.

It has, furthermore, been customary heretofore to coat bottle hoods with a material rendered plastic by the application of heat.l Thus, hood applyingoperations usually involve the application of heat to the hood enclosing the bottle neck to cause such hood to conform to thecontour of the bottle and to maintain its contact with the external surface of such bottle after Y may be applied to the mouth and neck of a bottle Without the application of heat; and one which may be removed from and applied to the bottle neck repeatedly without losing its ability `to conform to the contour of the bottle.

It is a further object of this invention to provide, if desired, 'a bottle hood so formed. as to constitute a complete and effective seal for the hoodsy for milk bottles lineid-'of Figure 2, and showsa hood prior `to its application to abottle.; and j Figure 5 is a sectional view taken on line r5--5 ofEigure'2. '-v 1 `The hood shown as anexample offanembodiment vof the invention, isL composedfof a'single circular blank'of moreor le'ssflexiblesheetmaterial I0. `This`blank .is suitably creased-,to permit the pleating vof a major portion thereof" in suitable capping machines'during the application thereof to the mouth and neck of a milk bottle. `As shown in the drawing, the blank 'I0 vis creased along more or less radial lines I2 which extend outwardly `to the peripheral edge of the blank. The crease lines I2 define relatively widev panels I4 and panels I6 which are substantially half'the width of the panels I 4; The panels I6 Aadjacent alternate panels\ I4 are adapted to be folded under these adjacent panelsso as to form a pleat of the box type, best shown in Figure 5,

wherein two contacting sets of such pleats are illustrated. Suchin-folding of a portion of thel lmaterial of whichthe hood is constructed, perinvolves the provision of a plurality of folded pormouth of the bottle without the aid of the stop- I per discs usually employed.

These and other objects and advantages of the invention will be made clear in the following description which is made with reference to the drawing forming a part thereof. Inthe drawing, like reference numerals indicate like parts,

and:

Figure 1 represents the mouth and neck of a milk bottle having applied thereto` the closure hood constituting the subject matter of this invention; e f

Figure 2 is a top plan view of the hood;

Figure 3 shows the blank from which the hood is formed and has indicated thereon the along which the blank is folded; y

Figure 4 is a vertical sectional View taken on lines tions of the hood which dene an annulus adapted to t tightly into the mouth of a bottle and rest on the cap shoulder commonly provided in such bottles. y

More specically, with reference to Figures 4 and 5, it will be noted thatthe pleated skirt 20 the plain top portion I8, has therein seven thicknesses of material. When these plys are compressed they form a rigid self-sustaining struc- Ature which is capable of performing the sealingk function of the ordinary disc type bottle cap,

It has been found advantageous to coat the inner surface of the hood with a self-sealing adhesive which has an ainity for itself at normal temperatures. Heretofore, such hoods have been coated or impregnated with substances which become plastic at elevated temperatures, and it has been an object of this invention to eliminate the use of heat in applying the hoods. The invention furthermore contemplates the use of an adhesive substance which is impervious to moisture and which has little or no affinity for glass.

According to this invention the preferred coating substance is a solution of latex in aqua ammonia. Such coating solution, in addition to the above-noted properties, has the further advantage of being unaffected by constituents of the milk. The aqua ammonia used in the solution is of sufficient strength to render the latex and the surface to which it is applied completely sterile. In the use of a hood coated with an adhesive of this character, the same may be removed from the bottle a great number of times Without tearing the material of which the hood is constructed, and Without materially affecting the adhesive properties of the coating, and a hood so coated may be reapplied to the bottle simply by pressing the pleated folds about the neck thereof.

Should it be found desirable to render the hood even more impervious to moisture the same may be coated externally with varnish, lacquer, or wax, as the circumstances may require.

The broad substance of the invention having been illustrated in connection with a specific embodiment, the practice thereof shall not be limited other than by the limitations which may be imposed thereon in the subjoined claims.

I claim:

1. A bottlev hood formed of a single exible sheet, comprising a. pleated skirt portion formed of pleated sections folded upon themselves to conform to the contour of a bottle neck, and an integral self-sustaining disc portion formed at its periphery of several compressed thicknesses of said pleated sheet adapted to enter and contact the mouth of a bottle in sealing engagement.

2. A bottle hood formed of a single flexible sheet, comprising a pleated skirt portion formed of pleated sections folded upon themselves to conform to the contour of a bottle neck, and an integral disc formed Witha self-sustaining annulus formed by folding and vcompressing a portion of said pleated skirt upon itself, said annulus constituting an abutment adapted to enter and contact the mouth of a bottle in sealing engagement.

WILLIAM A. CONWAY, JR.

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