US1612449A - Closure - Google Patents

Description

N. LEE

CLOSURE Filed De. s. 1925 Dec. 28 1926.

" INVENTOR Nap/v EE 4Y ATTORNEY Patented Dec. 2a, 1926.

NIXON LEE, OF BROOKLYN, NEW YORK.

CLOSURE.

Applicationfiled December 3, 1923. Serial No. 678,164.

My invention relates to closures used fol sealing the openings in containers, jars or bottles in which the closure is adapted to be repeatedly applied to and removed from the container, and furthermore to tightly seal the container when the closure is aflixed and locked in sealing position, even after repeated applications and removals.

My improved closure construction is particularly 7 adapted for use with bottles or jars having separated or divided spiral threads lying on the outer surface of the neck to coact with bent-in locking projections formed in the depending skirt or flange of the closure cap.

The primary object of my invention is, among other things, to provide an improved closure of this type whereby the closure cap may be economically strengthened or reinforced, while the bent-in locking projections are formed in the skirt in different planes relatively to the crown of the cap, and preferably of difierent sizes or lengths, to coact With respectively different sections of the divided spiral thread or threads formed on the bottle neck, such sections being relatively spaced-apart from each other to allow for the downward passage of the particular locking projections before the closure is rotated and locked in position. Futhermore by this improved structure with such coaction between the engaging parts of the closure cap and bottle neck pitches of small amount relative to the thickness of the threads may be obtained. Such slight pitches do not prevent a firm and secure locking action and take care of liner or gasket shrinkage, while the degree of pitch of such a divided spiral thread may be brought much nearer the horizontal than in that type of closures or caps having punched-in portions engaging separated and multiple spiral threads which lie substantially in mutal parallelism with one another on the outer surface of the bottleneck. Hence such a pitch plane may be even less than the width of such spiral thread on the bottle neck, and it is of advantage to have the pitch of such thread approach the horizontal not only to increase the wedging action} betwieen the parts to secure a tight seal, but also to prevent the cap closure from being inadvertent-- l y rotated or backed OK the container dur- 1n handling and transportation.

RVith the above and other objects in view,

my invention comprises the novel construction, combination and arrangement of parts to be hereinafter described and claimed.

In the drawings showing embodiments of my invention Fig. 1 is a sectional elevation of the glass container and closurecap in locked position; Fig. 2 is a development, more or less diagrammatic in form, of theclosure cap showing the relative location of the locking projections bent in from the depending skirt of the cap Fig. 3 1s a similar development of the out-. er surface of the conta ner-neck showing the separated or divided spiral therein; I

threads formed Fig. 4; is a sectional view taken on the line 4-4: of Fig. 1 showing the tions of the cap after the:

locking projeclatter has been turned to bring the projections in vertical ahnement with the r respective openings or passages between the different sections or portions of the spiral thread; and

Flg. 5 1s a sectional elevation, similar to Flg. 1, showing a modified form when a double set of l'OCklngPI'0]6Ct1OIlS and spiral threads are employed.

Similar numerals refer to similar parts throughout the several figures.

Referring to the embochment shown in Figs. 1-4: inclusive,

the container 6, preferably formed of glass or other suitable material, is of any preferred shape,

and has formed immediately below the mouth opening 7 on the exterior walls of the neck 8 a spiral thread 9 shown to be formed of three spaced-apart sections or portions 10, 11 and 12 of substantially the same length as illustrated in Fig. 3. A greater of spaced-apart sections of thread 9 may be employed or less number such separated to suit the requirements. The lower left-hand end of each section 10, 11 and 12 is formed with a vertical rib 13, 14: and 15 respectively to provide a stop and also to prevent the closure cap from being reversely rotated when applied to the containers as will hereafter be described.

The closure cap 16 is formed of sheet metal with the Hat top or crown 17 and having the depending shallow flange or skirt 18, the lower edge of which is bent over or curled outwardly to provide the annular reintoicing bead 19 to strengthen such flange or skirt 18. The skirt 18 is provided with a plurality of bent-in locking projections 20, 21 and 22, preferably of dinlerent sizes, and arranged in different planes relatively to the crown 17 and above the bead 19 as shown in Fig. 2. Such projections 20,21 and 22 are designed to aline with, and pass through, the passages or openings 23, 24 and 25 respectively, formed between the sections 10, 11 and 12, when brought into vertical alinement therewith. If desired the projections 20, 21 and 22 may all be 01 the same size and shape in which case the width of the passages or openings 23, 24 and 25 will be equal. All that is required is that the relative pitc ies of the sections 10, 11 and 12 and the openings 23, 2 1 and 25 shall be substantially the same as shown in Figs. 2 and 3.

In the modified form shown in Fig. 5, 1 have illustrated two sets of sections 10, 11 and 12 forming double spiral threads 9 with two superposed locking projections 20, 21 and 22 to engage the under sides of the thread sections 10, 11 and 12, as shown. Such Fig. 5 construction will give an exceptionally secure fastening because of increased frictional engagement between the coacting parts as well as to the low pitch of the divided threads and interlocking projections.

The operation of my improved closure is substantially as follows: The cap 16 is set on the container mouth 7 and rotated as indicated by the arrow in Fig. 1 until the projections 20, 21 and 22 register With the openings 28, 2a and 25 respectively. This vertical alinement or registering of the parts is readily obtained by rotation until each projection 20, 21 and 22 registers and drops through its particular opening 23, 2 1 and 25 as shown in Fig. 1. The ribs 13, 1a and 15 prevent the cap 16 from being reversely rotated and cause each projection 20, 21 and 22 to move forwardly in frictional engagement with the under shoulder or the thread sections 10, 11 and 12 as the cap 16 is 111 ther rotated in a clockwise dir ction as shown in Fig. 4. The ribs 13, 1 1 and 15 will also serve as a closure stop to prevent the cap 16 from being rotated too far from any undue twisting.

It is manifest that my improved closure may be readily removed and afterwards replaced on the container 6 to attain re-sealing, and that the relativel low pitch or" the divided spiral threads and interlocking projections from the cap skirt 18 produces an increased tightness through wedging, resulting in a closure which will be strong and durable and sufiioiently rigid to withstand all the pressures and strains falling thereon and also preclude any looseness through reverse rotation of the cap.

1 claim as my invention:

1. In combination with a container having a divided thread on its neck formed of a number o1 lengthwise spaced-apart, spirally-eztended sections of like pitch each separated by openings of difi'erent sizes therebetween, a closure having a like number of inturned locking projections of substantially like pitch and 01 different sizes each to pass through its opening of like size torthereafter simultaneously engaging the under shoulders of its predetermined section upon rotation in one direction.

2. In combination with acontainer having a divided thread on its neck formed of a number or lengthwise spaced-apart, spirally-extended sections of like pitch each separated by openings of progressively increasing sizes there-between, a closure having a like number or inturned locking projections of substantially like pitch and of progressively increasing sizes each to pass through its opening of like size for there after simultaneously engaging the under shoulders oi its predetermined section upon rotation in one direction. I

3. In combination with a container having a divided thread on its neck formed of a number or lengthwise spaced-apart, spirally-extended sections of like pitch each separated by openings of different sizes there between, a closure having a like number of inturned locking projections of substantially like pitch and of different sizes each to pass severally and simultaneously through its openings of like size for thereafter simultaneously engaging the under shoulders of its predetermined section upon rotation in one direction.

l. In combination with a container having a divided thread on its neck formed of a number of lengthwise spaced-apart, spirally-extended sections of like pitch each separated by openings of different sizes there-between, a closure having a like number of inturned locking projections of sub stantially like pitch and of difierent sizes, each to pass through its opening of like size for thereafter simultaneously engaging the under shoulders of its predetermined section upon rotation in one direction, and

a combined guide and stop on each section to prevent improper closure rotation in either direction after the several projections have passed through its respective opening between said sections.

5. in combination with a container having a divided thread on its neck formed of a number of lengthwise spaced-apart, spirally-extended sections of like pitch each separated by openings of progressively increasing sizes there-between, a closure havits predetermined section upon rotation in ing a like. number of inturned locking proone direction, and a combined guide and jections of substantially like pitch and of stop on each section to prevent improper 10 progressively increasing sizes each to pass closure rotation in either direction after the 5 severally and simultaneously through its several projections have passed through its opening of like size for thereafter simulrespective opening between said sections.

taneously engaglng the under shoulders of NIXON LEE.

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