US2079932A

US2079932A - Closure cap for receptacles

Info

Publication number: US2079932A
Application number: US626273A
Authority: US
Inventors: Alan R Fergusson
Original assignee: Hazel Atlas Glass Co
Current assignee: Hazel Atlas Glass Co
Priority date: 1932-07-30
Filing date: 1932-07-30
Publication date: 1937-05-11
Anticipated expiration: 1954-05-11

Description

May 11, 1937. R FERGUSSQN 2,079,932

CLOSURE CAP FOR RECEPTACLES Filed July 30, 1932 INVENTOR Ali. Fergusson ATTORNEY Patented May 11, 1937' UNITED STATES- aovasaz CLOSURE CAP roa nrcnrmcmis Alan R. Fergusson, New York, N. Y., assignor to Hazel-Atlas Glass Oompany,Wheeling, W. "an a co p ration or West Virginia Application July 30, 1932, Serial No.626,273

9 Claims.

co-operate therewith in applying the closure cap a to the receptacle to draw and secure the'closure cap to the receptacle neck. Caps of this character are made of relatively rigid metaland the screw threading of the skirt of the inner cup member reinforces and increases the rigidity of the metal thereof. In addition to threading the 20 edge of the skirt is provided with a bead, usually termed a wire edge, which renders the cup skirt so rigid that it is impossibleto reform the same under hand pressure. It is practically impossible in the manufacture of receptacles of glass to produce receptacles with threaded necks of uniform and the same diameterdue to the expansion or contraction of the heated or molten glass. This irregularity or variation in the diameter of the neck or thread thereon of sucdo cessively produced receptacles is so serious that it' is impossible to apply such a drawn and threaded cup member onto the larger expanded receptacle necks or thread thereon since the cup member is of a rigid structure and fixed diameter resulting in great loss of time and material in trying on closure caps and the discarding of receptacles the-threaded necks of which have expanded beyond certain fixed dimensions, and

when applying the closure caps to filled recep-. tacles by 'mechanical means frequently resulting in the breaking of the receptacle and consequent,

loss of the contents thereof. It is the principal object of the present invention to produce an improved constructed and arranged two part closure cap for receptacles,

- such as bottles, vials, jars and the like, comprising an outer cup member and a member concealed within the outer cup member provided with a locking device or screw thread to co-operate with the locking device or screw thread on the receptacle neck to firmly draw and lock the closure member to the receptacle and adapt itself to irregularities and variations in the diameter of the receptacle neck or the thread thereon, and

55 to provide the closure cap members with portions adapted to interlock to anchor the inner mem-.- ber within the outer member to prevent inovement of the parts relative to each other and "assure applying and removing forces applied to 60 the outer member of the closure cap being transwithin the cup member and provided with a locking device or screw thread adapted to be reformed to accommodate it to irregularities or variations in the bottle neck or the thread thereon in applying the closure cap thereto.

A further object of the invention is to produce an improved constructed closure ,cap of this character for receptacles, comprising a cup member having a smooth skirt, and a split annular or ring member or band formed and severed from a web or strip and coiled to annular form and provided .with a locking device or screw thread to co-operate with the locking device or screw thread on the receptacle neck to draw and rigidly lock the closure cap to the receptacle neck with the disk portion of the closure cap in firm engagement with the end wall of the receptacle neck, said band when arranged to annular form being of less diameter than the skirt of the cup member to permit of expansion of the annularmember, and the cap members having parts to interlock to anchor, the inner member within the outer, member to positively transmit to the inner member the securing force applied to the cup member and assure a rigid locking of the closure cap to the receptacle.

Other objects and advantages will hereinafter appear. I

In the drawing accompanying and forming a part of this application Figure 1 is a sectional view of the month end of a receptacle and an embodiment of myimproved constructed closure cap applied thereto.

Figure2 is a view similar to Figure 1 but showing the closure cap disassembled from the receptacle neck and about tobe applied thereto.

Figure 3 is a perspective view, partly in section, of the outer cap member of my improved closure cap.

Figure 4 is a perspective view of the inner or locking member of the closure cap.

Figure 5 is a view in perspective of portions of the outer cap member and inner locking member in disassembled relation to show the interlocking means of said members to anchor the inner member to the cap member.

Figure 6 is a perspective view of the members of the closure cap in disassembled relation and showing the same arranged with modified interlocking means to anchor the inner member to the outer cap member; and

Figure 7 is a plan view of a strip or web of material from which the inner locking member is formed and showing the manner of forming the web and severing blanks therefrom from which said inner locking member is constructed.

The closure member is particularly adapted for use with receptacles 8, such as bottles, vials, jars, and,the like made of glass, although it may be used with receptacles of other materials, such as porcelain or metal. In the embodiment illustrated the closure cap is shown in connection with a glass bottle having a locking device or shoulder on the exterior of the neck, shown in the form of a continuous screw thread 9, although it may readily lend itself for surface decoration, and the disk portion mayhave an inwardly extended bead l2 positioned within the juncture of said disk portion with the skirt to be in opposed relation to the ,edge or end wall of the mouth of the receptacle 9 ,to impinge against and firmly seat a liner or sealing pad l3 to said end wall of the receptacle mouth.

The flange H is of increased diameter relative to the diameter of the threaded bottle neck, and there is arranged within the cap member a circumferentially expansible and contractile band or ring member I4, transversely split, as at l5. Thering' member is formed to a predetermined diameter slightly less than the diameter of the bottle neck to which the closure cap is to be applied and less diameter than the diameter of the ,cap skirt l I and of a width somewhat less than the depth of the cap skirt. The ring member is provided with a locking device or shoulder, such as thread engaging means to co-operate with the locking device or screw thread 9 on the bottle neck, and shown as a screw thread IS. The opposite marginal end portions of the ring member are flared outwardly, as at H, I8, which portions are adapted to loosely engage the cap skirt to support and maintain the body portion of the ring member in spaced relation to the cap skirt. The flaring end portion i1 engages with and serves to support and retain the liner or sealing pad l3 within the cap member l0. To add resiliency to said flaring portion topermit of the ready expansion and contraction of the ring member it is provided with a plurality of circumferentially spaced slits I!) cut inwardly from the edge to substantially the width of the flaring portion.

To retain the ring member within the cap member the marginal portion of the cap skirt is turned inwardly over the flaring end portion of the ring member, as at 20. To anchor and prevent rotation of the ring member relative to the cap member and whereby the force to rotate the closure cap in applying it to the receptacle will be transmitted to the locking member and assure the drawing and firmly seating of the disk portion of the cap member and thereby the sealing pad to the edge .or end wall of the receptacle neck portions of the cap and ring members are interlocked. This may be variably effected, and as shown in Figures 1 to 5 the flaring end portion l8 of the ring member II is provided with a series of notches 2| circumferentially disposed about and cut into the edge of said flaring ring portion, for the engagement of nibs or lips 22 arranged on and extending from therim of the cup skirt, said nib being of less width than the notches 2| to permit of the ex- ,panding and contracting movements of the ring member.

In the Figure 6 construction there is shown a modification of the interlocking means of the cap members and consisting of corrugating or flut-' I member arranged with the corrugations 23.

In the method of constructing the band or ring member hi there is provided a fiat strip or web S"(Figure 7,) whereby said band may be economically constructed without waste of material. The web is drawn froma rotatably supported roll of the web and formed with flutes or ribs to constitute the locking shoulder or thread engaging means It and the opposite longitudinal marginal portions are bent laterally to constitute the flaring portions l7, ll! of the ring member, said flaring portions preferably prior to bending them laterally being provided with the slits I9 and notches 2 l. Blanks of a length equal to the predetermined diameter of the ring members or bands to be formed are then severed from the strip and coiled or rolled to circular form.

As stated the band I4 is formed to a diameter which is slightly less than the predetermined di ameter of the threaded receptacle neck to which it is to be applied and of less diameter than the diameter of the cup skirt H whereby it will normally be spaced from the skirt, as shown in Figure 2. The end wall of the. receptacle neck is so shaped that the leading end portion of the locking shoulder or thread engaging means will engage thereon and as the cup is rotated the ring member or band will expand and accommodate itself to the shape and diameter of the bottle neck and thread thereon, the band being expanded from the dotted line position to the full line position shown in Figure 1. In the event the receptacle is made of glass and the neck orthe thread thereon has expanded beyond its predetermined diameter due to expansion or contraction in the cooling of the heated or moltenglass the split ring member will reform itself under the force and without any appreciable eifort in applying it to the receptacle. In the expansion of the band or ring member over an oversize receptacle neck there is also effected an elongation of said ring member, which is compensated for by the yielding of the slitted flaring end l1.

Having thus described my invention, I claim:

1. In a, closure cap for receptacles, a. cup member having a skirt, a split ring member engaged within the cup member of a normal diameter less than the diameter of and concealed by the cup skirt and having the opposite marginal portions-flared outwardly, one of said flaring marginal portions having circumferentially spaced slits cut inward from the edge and the opposite 1 the inherent tension of the material thereof, said normal diameter less than the diameter of the cupskirt engaged in the cup member, said ring member provided with thread engaging means and the opposite marginal portions flared outwardly with the one flaring portion juxtaposed to the disk portion of the cup member having circumferentially spaced slits cut inward from the edge, a liner interposed between the disk portion of the cup member and the slitted flaring marginal portion of the ring member, and the rim portion of the cup skirt interlocked with the juxtaposed flaring marginal portion of the ring member to anchor the ring member to the cup member and permit of expansion and contraction thereof.

3. A closure cap for receptacles having a neck with an exterior locking shoulder, comprising a cup member having a skirt of a diameter greater than the diameter of the receptacle neck to which the closure is to be applied, and a band formed from a flat strip of resilient material engaged within the cup member adapted to be circumferentially contracted and expanded against the inherent tension of the material thereof, said bandhavingawidth slightly less than the depth of the cup skirt with the opposite marginal portions flared outwardly to engage the cup skirt and the portion intermediate tions having a normal diameter less than the cup skirt and substantially the same as the outer di ameter of the receptacle neck to which the closure cap is to be applied and formed with a locking shoulder to o e-operatewith the shoulder on the receptacle neck to lock the closure cap'thereto, and the rim of the cup skirt turned inward and upward and anchored to the outer flared marginal portion of the band to transmit rotary movement of the cup member to said band in engaging the looking shoulder thereof with the locking shoulder on the receptacle neck to firmly draw the closure cap to the receptacle neck and permit expansion and conforming of said band to the receptacle neck and locking shoulder thereon in applying the closure cap to the receptacle.

4. A closure cap for receptacles having a neck with an exterior locking shoulder, comprising a cup member having, a skirt of a diameter greater than the diameter'of the receptacle neck, a band formed from a flat strip of resilient material engaged within the cupmember adapted to be circumferentially contracted and expanded against band having a width less than the depth or the cup skirt and formed to a normal diameter less than the diameter of the cup skirt and substantially equal to the outer diameter of the receptacle neck, said band having a locking shoulder formed therein adapted to co-operate with the locking shoulder on the receptacle to lock the closure cap thereto and notches in the outer edge, and the rim of the cup skirt turned inward over the outer edge portion of the band, and portions thereof interlocked with the .band notches to anchor the band to the cup memberwith the body of the band spaced from the skirt of the member to prevent rotary movement of the cup member relative to the band in engaging the locking shoulder thereon with the locking shoulpansion of the band der on the receptacle neck and permit of exto conform with the receptacle neck and locking shoulder.

5. A closure cap for receptacles having a neck with an exterior locking shoulder, comprising a said flared marginal porinner member being of cup member having a skirt of a diameter greater than the receptacle neck to which it is to be applied, and'aband formed from a flat strip of resilient material engaged within the cup member having a normal diameter less than the diameter of the cup skirt and adapted to be circumferentially contracted and expanded against the in-.

herent tension thereofand conformed to the neck of a receptacle when engaged thereon, said band being anchored to the cup skirt to permit of circumferential expansion and contraction of the ring mem 1r within the cup member, and having a locking shoulder formed therein to co-operate with the locking shoulder on the receptacle to lock the closure cap to the receptacle and adapted to conform itself to irregularities in the locking shoulder on the receptacle neck.

6. A closure cap for receptacles having a neck with an exterior locking shoulder, comprising a cup memberhaving a skirt of greater diameter than the receptacle neck to which it is to be applied, and a band formed from a flat strip of resilient material engaged within the cup member formed to a normal diameter less than the internal diameter of the cup member and substantially equal to the outer diameter of the receptacle neck,- cup skirt and having notches spaced about the outer edges and a locking shoulder formed inthe material thereof to co-operate ,with the locking. shoulder on the receptacle neck to lock the closure member thereto, and the rim of the cup skirt turned inward over the notched edgeof the band and having nibs extended therefrom to enin the ring member to anchor member and permit of circumferential expansion and contraction of the band.

'7. In a screw closure cap for receptacles, a cup member having a top and a smooth skirt, and an inner member comprising a split band provided with thread'engaging means, the body of the inner member being of less of the cup member and normally spaced therefrom, the split band and the spacing permitting the inner member to be expanded and contracted, and means for locking the inner member and the cup member together.

8. In a screw closure cap for receptacles, a cup member having a top and a smooth skirt, and an inner member comprising a split band provided with thread engaging means, the body of the inner member being of less diameter than that of the cup member and normally spaced therefrom, thesplit band-and the spacing permitting the inner member to be expanded and contracted, the lower portion of the inner member being outwardly flared, and means for lockingthe cup member to said outwardly flared portion of the inner member.

9. In a screw closure cap for receptacles, a cup member having a top and a smooth skirt, and an inner member comprising a split band provided with thread engaging means, the body of the less diameterthan-that of the cup member and normally spaced therefrom, the split band and the spacing permitting the inner member to be expanded and contracted, a liner supported between the upper end of the inner member and the top of the cup member, and means for locking the inner member and the cup member together.

ALAN R. FERGUSSON.

and said band concealed by the