US2006041A

US2006041A - Glass bottle molding means

Info

Publication number: US2006041A
Application number: US523124A
Authority: US
Inventors: Frank L Darling
Original assignee: Anchor Cap and Closure Corp
Current assignee: Anchor Cap and Closure Corp
Priority date: 1931-03-16
Filing date: 1931-03-16
Publication date: 1935-06-25
Anticipated expiration: 1952-06-25

Description

June 25, 1935. F. DARLING 2,006,041

GLASS BOTTLE MOLDING MEANS Filed March 16, 1931 gwuentoa MWA Patented June 25, 1935 vz metoii PATENT OFFICE GLASS BOTTLE MOLDING MEANS FrankL. Darling, Baltimore, Md., assignor to Anchor Cap & Closure Corporation, Long Island City, N. Y., a corporation of New York Application March 16, 1931, Serial No. 523,124

8 Claims.

The present invention relates to improvements in glass molding means and particularly to means for forming the finish about the mouth of a glass bottle. 7 c

The particular embodiment of the invention illustrated in the accompanying drawing and which will be hereinafter described more in detail, is especially intended for providing. means for forming depressions in the exterior surface of the finish of a bottle, which depressions are to serve as a fulcrum or anchor means for a device bywhich the cap commonly employed for closing the bottle may be detached.

A further important feature of the present invention is that it includes means for reinforcing or strengthening the wall of a bottle neck in which the aforesaid depressions are formed.

The invention will be described in connection with the accompanying drawing in which,

Figure 1 is a view partly in vertical section of an embodiment of the invention; I

Figure 2 is a plan andfpartial horizontal sectional view substantially on the line 2-2 of Figure 1;

neck ring of a glass bottle molding means and 2 7 mounted to swing about a vertical axis which also Figure 3 is an elevation of a portion of a bottle neck that has been formed by the means shown in Figures 1 and 2;

Figure 4 is a plan of Figure 3; and

Figure 5 is a section substantially on the line 5-5 of Figure 4.

Referring to the drawing, in the several views of which like parts are designated bythe same reference character, I designates the body of a designates a portion of the holder or support in which such ring is mounted.

As customary, and as shown in Figure 2, the neck ring holder comprises two similar sections constitutes the axis for the sections of the parison mold l4.

One of the features of the present invention is that each section of the neck ring includes a separable liner portion 3, the inner circumferential wall of which is provided with means for imparting the desired shape or finish to the mouth more or less tangentially, into the bore of the neck ring.

When the neck ring is closed, the ribs 6 and pins 1 thereof are positioned to form in the finish of a bottle, being shaped by such neck ring, re- 5 cesses 8 and vertically extending grooves 9 which are adapted to receive the ends and limbs of a cap removing device, such for example as shown in my prior Patent N 0. 1,777,077, issued September 30, 1930. V 10 The ribs 4, 6, and pins 1 are integral with the member 3 of each neck ring section and such separable member is preferably formed by a hydraulic forging method which enables such members 3 to be accurately formed of the desired (ii-' mensions and insures that exact duplicates or counterparts of any desired shape and size can be provided. By forging the neck ring, particularly a neck ring of the type herein disclosed having projecting pins, it is possible to produce the rings in large numbers to absolutely uniform dimensions. The cost of production is lowered and the forging process affords havinga highly compacted structure. This produces heat trans.- mission of the character desired and guards against irregular expansion and contraction. I prefer to employ for the forging process a metal which is readily responsive to the forging operation, such as brass or aluminum bronze.

One of the objections to the character of neck rings heretofore commonlyemployed, in which parts corresponding to the pins 1 are initially formed separate from the body of the ring, is the great expense incident to providing such parts so that they will be securely attached to the ring and will not produce checks in the finished glass product.

In the use of neck rings there is a maximum amount of Wear along the parting line of the sections of the ring next to the finish on the 40 article being molded. The wear at this pointacts to create a seam on the finish of a bottle shaped thereby which interferes with securing the desired sealing of the bottle when a closure cap is applied thereto.

When the finish forming parts of the neck ring are integral with the body of thering, as has been the common practice, a very slight flaw or abrasion in the, surface adjacent the parting line sary, with a minimum loss of time and at very small expense.

Another objection to making the so-called inlay pins 1' initially separate from the body of the neck ring is that the amount of heat radiated from such pins when in use differs from that of other parts of the ring and there is danger of the relatively small pins being burnt ofi.

By making the pins integral with the forming portion of the ring, I therefore provide a more durable structure and also avoid the formation of flaws in the product, arising from having parting lines about the junction of the pins and ring.

Iii designates the plunger or neck pin adapted to cooperate with the neck ring in forming the finish on a bottle neck, and by my invention, the portion of such plunger or pin that extends within the detachable sections 3 of the neck ring is shown as being of tapered form and provided with two longitudinally extending grooves El, which are positioned opposite the pins 7 on the neck ring.

The grooves or depressions ll gradually increase in depth toward the free end of the plunger or neck pin with the result, that when the parts are positioned as shown in the drawing, and a body of glass is introduced into the parison mold, the ribs l and 6, and pins '5 will provide the annular groove 5 and recesses 8 and S in the bottle neck while the thickness or such neck in alignment with the grooves 9 will be gradually increased in thickness toward the mouth. In other words, the grooves or depressions l l in the plunger or neck pin will act to form longitudinally extending rib-like portions l2, within the mouth of the bottle in substantial alignment with the exterior grooves S and recesses 3, thus effectually strengthening the wall of the bottle at points where it would otherwise be materially reduced by the presence of such grooves and recesses.

The shape of the recessed portion of the plunger or neck pin ill and the relation of the recess forming pins '1 of the neck ring thereto, are such that the neck ring may be readily opened and the plunger withdrawn when desired.

It is believed that the operation and advan tages of the invention will be readily understood from the foregoing description of the drawing.

It will be noted that by the means described, it is possible to produce a glass vessel having formed in the finish about its mouth recesses to. receive a closure removing means, the wall of the vessel in alignment with such recesses being reinforced or strengthened, so that danger of breakage at such portions is eliminated, and byv making the parts of the neck ring which give the desired contour or shape to the finish integral with the body, it is possible to avoid objections that have been incident to! prior mechanisms in which such portions are initially made separate and subsequently attached to the ring.

By the means described, glass vessels having the characteristics referred to, may be manufactured more readily and at a less expense than by the means heretofore employed.

I claim:

1. The combination with a neck ring for providing a finish for the necks of glass bottles having two opposed and circumferentially spaced, projections extending into the bore of the ring to form exterior depressions in the finish about the mouth of a bottle, of a neck pin adapted to be positioned in the bore of the neck ring and having longitudinally extending recesses of tapering depth formed in its outer sm'faoe in substantial alignment with each of said projections on the ring, for the purpose described.

2. A neck ring for providing a finish for the mouth of a glass vessel having within its bore a circumferentially extending bead and provided at one side of said bead with a rib extending substantially parallel to the length of said bore and at the opposite side of the head, in substantial longitudinal alignment with said rib, with a pin that projectsinto the bore, said bead and rib and pin being integral.

3. A neck ring for forming the finish about the upper end of a glass container, said neck ring having a plurality of relatively short pinlike projections integral with and extending inwardly from said ring to form exterior depressions in the finish at the upper end of the glass container shaped by said neck ring, said pin-like projections having a length slightly less than the thickness of the glass to be molded and said projections being spaced circumferentially of said ring and in close proximity to the upper end thereof to form the exterior depressions in the glass directly below the top of the finish.

4. A neck ring for forming the finish about the upper end of a glass container, said neck ring having an inwardly extending flange adapted to form the top of the finish and also having a plurality of relatively short pin-like projections extending inwardly from said ring to form exterior recesses in the finish at the upper end of a glass container shaped by said neck ring, said pin-like projections having a length slightly less than the thickness of the glass to be molded, said projections being spaced circumferentially of said ring and in close proximity to said inwardly extending flange to form the exterior recesses in the finish directly below and in close proximity to the rim of the container, and said pin-like projections being integral with the neck ring to dissipate heat and prevent defects in the rim of the container above said recesses. I

5. A hydraulically forged neck ring formed from two similar sections having an annular rib thereon and also having a pair of spaced ribs extending upwardly therefrom and substantially perpendicular thereto, a plurality of pin-like projections at the ends of said upwardly extending ribs in close proximity to the top end of the neck ring extending inwardly from said ring whereby they will form exterior recesses in the finish slightly below the rim of the container shaped by said rings, and also form a relatively thin wall of glass intermediate said recesses and the rim of thecontainer, said projections being integral with said ring to prevent checks in said thin wall of lass.

6. A neck ring for forming the finish about the upper end of a glass container, said neck ring having an annular inwardly extending flange for forming the rim of the container and a plurality of projections extending inwardly from said ring to form recesses in the exterior of the finish at the upper. end of a glass container and to cooperate with said inwardly extending flange to form a narrow wall of glass between said recesses and the rim of the container, said projections being integral with the neck ring to prevent checks in said narrow wall of glass.

7. In a device of the class described, the combination of a neck ring for forming the finish about the upper end of a glass container, said neck ring having .a plurality of relatively short pin-like projections integral with and extending inwardly from said ring to form recesses in the exterior of the finish at the upper end of the glass container shaped by said neck ring, said pin-like projections having a length slightly less than the thickness of the glass to be molded and said projections being spaced circumferentially of said ring and in close proximity to the upper end thereof to form the exterior recesses in the glass directly below the top of the finish, and a neck pin adapted to be positioned in the bore of the neck ring and having longitudinally extending recesses formed in its outer surface in substantial alignment with each of said projections on the ring for the purpose described.

8. In a device of the class described, the combination of a neck ring for forming the finish about the upper end of a glass container, said neck ring having an inwardly extendingflange adapted to form the top of the finish and also having a plurality of relatively short pin-like projections integral with and extending inwardly from said ring to form exterior depressions in the finish at the upper end of a glass container shaped by said neck ring, said pin-like projections having a length slightly less than thethickness of the glass to be molded and said projections being spaced circumferentially of said ring and in close proximity to said inwardly extending flange to form the exterior depressions in the glass directly below the top of the finish and to form a narrow wall of glass between each depression and the rim of the container, and a neck pin adapted to be positioned in the bore of the neck ring and having recesses formed therein in substantial alignment with each of said projections on the ring for increasing the thickness of the wall of the vessel in alignment with said depressions.

FRANK L. DARLING.