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Publication numberUS1917946 A
Publication typeGrant
Publication dateJul 11, 1933
Filing dateMar 3, 1930
Priority dateJan 16, 1928
Publication numberUS 1917946 A, US 1917946A, US-A-1917946, US1917946 A, US1917946A
InventorsMaccordy Charles A
Original AssigneeMaccordy Charles A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bottle cap retainer and method of making same
US 1917946 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

July 11, 1933.-

C; A. M CORDY BOTTLE 0A1 RETAINER AND METHOD OF- MAKING SAME Original Filed Jan. 16 1928 INVENTQR @acfl? WITNESS flTTORNETS Patented duly ll W333 1 no'rrnn one @rizinel application filed Ham in-y 16, 1928, Eerial No. 347,092. Divided and. this application filed. March 3:, p

' i930. aerial No, 482,922.

This invention relates to a bottle cap retainer and refers more particularl to bottle caps which are drawn across an upon the mouth of the bottle and provided with a skirt or extension ada ted to wrap or fold around the neck of the ottle.

The main ob'ect is to seal the cap upon the bottle or ot or container by means oi a ring of fragile metal cast or molded in one to operation around the skirt and neck of the bottle and capable of being easily broken when it is desired to break the seal or remove the cap and which will be easily detectable if broken.

Another object is to provide a simple and convenient sectional mold which may be temporarily clamped around the skirt and neck of the bottle for receiving the molten metal from which the cap-retainin ring is so formed and to enable said mold to e easily and quickly detached from the bottle immediately following the casting of the retaining ring Another ohject is to provide the ring with an integral tab or finger-piece by which the ring maybe hroken to release the cap and permit the same to be removed from the bottle when desired.

Other objects and uses relating to the in- ,vention will he hrought out in the following description. in the drawing: Figure l is a perspective view of a bottle with the cap held thereon by my improved retaining Figure 2 is an enlarged transverse sectional view through the neck of the bottle and skirt oi the cap showing the mold in operative position -for casting the ring around said skirt and neck of the hottle, the dotted lines indicating one oil the clamping sections as moved to its open position.

Figure 3 is a sectional view of the locking device for the clamping sections taken in the plane of line 3-43, Figure 52.

Figure t is a detail sectional view taken in the plane of line 4-4, Figure 2.

Figure 5 is a detail sectional view taken the plane of line 5-5, Figure 2, showing a portion of the cap and one side of the mold for forming the cap-retaining ring.

Figure 6 is a perspective View oi the detached ring.

The bottle or other receptacle A may he of any conventional form, size or material having the usual enlarged mouth a and neck a'--' across and around which the cap -B is placed, the .cap beingprovided with a skirt h' ad'apted to fold or fit around the neck of the hottle.

A cap-retaining, ring -'-1- of fragile metal is cast from molten metal around the skirt and neck of the bottle to tightly impinge the skirt against said neck for holding the cap in operative position and is formed with a radially projecting finger-piece or tab --2 during the process of molding.

As illustrated, the apparatus-for casting the ring -1 around the skirt of the cap ill and neck of the bottle comprises a pair of substantially semi-circular clamping members 3- and 3- arranged end to end to form a substantially continuous circular mold having their inner faces provided with semi-annular channels or chambers l and d' which, when the sections are brought together end to end, register with each other and form a substantially continuous chamber in which the ring -1 is cast. v The inner diameter of the mold as a whole above and below the chambers iand 4=- is approximately equal to the external diameter of the neck -a' of the bottle allowing a slight clearance for the receptio or" the shirt I)-. of the cap B-.

The meeting ends of the mold sections -3- and -3' at one side are hinged together at 5' to permit said sections to open and close upon the skirt of the cap and neck of the bottle, the opposite meeting edges being provided with outwardly flaring semi-annular flanges 6- having tapered semi-annular recesses 7 which, @5- when the clamping sections are closed upon the skirt of the cap and neck of the bottle forming a tapered socket for receiving a similarly tapered end of the nozzle 8.

'lhis nozzle 8 is provided with a can too tral relatively small passage 9 axially therethrough for receivingthe molten metal and discharging the same into cavities or chambers 4 and 4' during the operation of molding the ring 1..said nozzle being movable into and out of socket 7- as may be required for projecting the molten metal under pressure into said mold.

The ends of the mold sections -3 and 3 adjacent the sockets 7- are provided with relatively thin and narrow recesses 10- projecting radially and outwardly from the adjacent ends of the chambers 4- and 4' to form extensions thereof and in which the tab +2 is molded as an integral part of the ring.

The locking lever 11 is pivoted at --12 to one end of one of the sections as 4 to swing into and out of engagement with the adjacent portions of both of the sections, preferably at the junction of the flanges 6.. with the sections 3- and 3 Y erably formed of a single piece or sheet of flexible moisture-proof material such as paper and it, therefore, follows that when it is placed upon the mouth of the bottle and around the neck thereof its skirt will be more or less crimped or folded and in practice it is found to be expedient to crease and score the skirt radially in uniformly spaced relation circumferentially to facilitate its crimping or folding around and close tothe periphery of the neck of the bottle and also to form a more or less uniform surface for the reception of the ring 1, and

a in order that the mold sections 3- and 3' may fit closely upon the more or less corrugated periphery of the skirt of the cap the inner peripheries of the mold sections above and below the chambers 4 and 4' are notched or corrugated to conform to the corrugated contour of'the skirt.

This construction assures a close engages ment of the inner faces of the mold sections with the priphery of the skirt and also assures a close impingement of the skirt against theneck of the bottle to avoid leakage of the molten metal from the chambers 2 and 4 during the casting of the ring -l-.

' Operation In order to cast the ring u on the skirt and neckof the bottle the cap is first drawn down tightly by hand across the mouth of the bottle and around the neck thereof after which the clamping sections 3 and 3'- are placed around the skirt and.

the passage .9-- and into the chambers 4 and 4 to form a complete rin -1 around and against the periphery o the skirt of the cap -B and also to impinge the skirt of theca against the riphery of the neck of t e bottle, there y holding the cap in operative position on the bottle.

This casting operation is practically instantaneous and is immediately followed by the removal of the nozzle -8 from the sockets 7 whereupon the locking lever 11 may be r'ocked to the position shown by dotted lines in Figure .3 to release the clamping members 3 and 3 and permit them to be opened leaving the .ring 1- with its tab or finger iece -2 integrally united around the s 'rt of the cap and neck of the bottle. v

The forcible withdrawal of the nozzle 8, from the sockets 7 immediately following the casting operation breaks connection between the metal in the opening 9 and finger piece .-2 by reason of the fact that this connection is relatively small and, therefore, easily broken, particularly before the metal has had time to thoroughly cool.

It is evident, however, that owing to the short time required for casting the ring the mold sections 3- and 3'- do not have time to absorb the heat from the molten metal and for that reason effects a quick chilling of the newly cast ring aided by the fact that the ring is of relatively small cross 1 section.

This quick cooling of the newly cast ring also prevents charring or other injury by heat of the skirt of the cap and renders the ring fragile and capable of being easily broken by comparatively light verticalpressure of the finger or other object against the Attention is called to my pending application, Serial No. 247,097, filed January 16, 1928, of which this is a division.

While I have shown and described the.

immese A. olevice for retaining s, plaited-skirt' bottle cap upon the mouth and nmk of s, bottle comprisin an en&less ring of permanent size and orm having its inner dimmeter conforming to the exterior diameter of the skirt and to the individual plsils thereofi when the letter is tightly applied to the neck of the bottle.

In witness whereof I have hereunto set my hand this Q ith day of January 1930.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5137162 *Mar 4, 1991Aug 11, 1992Adam FritzCap assembly for a container
U.S. Classification215/274, 169/19
International ClassificationB65D55/02, B65D55/08
Cooperative ClassificationB65D55/0809
European ClassificationB65D55/08A