US2267993A - Paper bottle and container - Google Patents

Description

Dec. 30, 1941. j w. PELZER E 2,267,993

PAPER BOTTLE AND CONTAINER 2 Sheets-Sheet 1 Filed Dec. 19, 1938 8 mm 1 ,MH

0 r HH 5 ATTORI/VEY.

Dec. 30, 1941. PELZER ET A 2,267,993

PAPER BQTTLE AND CONTAINER 2 Sheets-Sheet 2 Filed Dec. 19, 1938 INVENTORS Pet Pei gaps under the ring,

Patented Dec. 30, 1941 UNITED STATES PATENT OFFICE PAPER nomi e ficomm v William ram and mm 11. raw,

New York, N. Y.

Application December 19, 1938, Serial no. 246,606

This invention relates to'p'aper bottles of the type shown in Letters Patent of the United States No. 1,310,117 having a body formed from a paper tube plaited at one end to form the neck and mouth, the plaits being clinchedby a metal ring, and the opposite end being closed by a paper disk having a flange clinched to the body end by a metal ring, In this type of bottle the neck ring is U -shaped-in cross-section, with the inner flange deeper than the outer flange and is clinched in position by expanding the internal flange against the inner wall of the neck to expand the plaiting and form an inward shoulder to lock the ring to the bottle neck. The bottom ring has its outer flange deeper than the inner flange and the ring flange, compressing the body and bottom flange,

and forming an outward shoulder to lock the bot-.

""the ring into is clinched in position by contracting the outer as,compared to triple-ply at the plaits would leave fllled with paramn with which the bottle is waterproofed, would create leaks. The outer flange oi the neck ringformed a smooth surface with the plaits and provided no outer bead or shoulder for grasping the bottle in use and no head or shoulder over which a closing cap could be secured, and provided no seat for the closing disk commonly employed with glass bottles. Furthermore, it was found. necessary to employ annealed rings to avoid splitting of the inner flange in expanding same to effect the clinching. The bottom ring in this type bottle proved satisfactory so far as clinching the paper was concerned, but care had to be exercised to prevent the inner flange from embedding too deeply into the flange of the paper bottom, and frequently the paper bottom due to the weight of the contents of the the bottle body. and tendency of the inner flange oi the ring to cut the flange of the paper bottom and cause leaks.

The object of this invention is to overcome the defects above pointed out and generally to improve this type 01 bottle, and in carrying the invention into effect we employ U-shaped metal neck and bottom rings having the outer flanges deeper than the inner flanges, andthe inner bottle would sag and cause --the flange to pull away from v in both instances, there was a and unless'these gaps were flange being such as to seats for the sealing the bottle neck by contract- 5 Claims. (Cl. 229-) flanges having narrow lateral flanges to provide disk and bottom. The neck ring is clinched on ing the outer flange. This is done by forcing the female member of adie, the male member serving as an anvil on which the ring is seated and having means for clamping the ring in the seat through the sealing disk flange. The female die member in contracting the outer flange of the ring causes inward and engage the bottle neck causing it to contract and decrease in diameter under the lateral flange of the ring and compress the plaits and the entire neck upon the shoulder of the lateral flange, and the edge of the outer flange during this contraction continuing to curve inward between the plaits while the sections of the flange which contact the plaits curve downward parallel with the plaits forming a series of loops over the plaits. J

In contracting the neck ring in this manner the paper near the mouth of the neck, includin both the single-ply and the triple-ply sections, is forced under the slightly curved shoulder of the sealing disk flange and is pressed against it to form a seal, and the paper above this point within-the walls of the ring spreads and flils the space between the paper plus the shoulder formed in the neck by forcing it under the iirmly in position. Also the contraction of the outer flange in the manner indicated forms the outer flange into a bead which serves as a means for grasping the bottle and-as an anchorage for an overall cap when used in addition to the sealin disk.

The bottom ring is similar tothe neckring in cross-section except that it is deeper. The lateral flange of the inner flange forms a seat for the flanged bottom disk, the depth of the bottom permit seating of the bottom disk on the lateral seating flange. This ring is clinched in position by a tool having a contracting ring shaped to draw the outer flange inward at an angle to form a conic sectiong and at a point above the shoulder of the inner and lateral flanges the outer flange of the ring is contracted into a narrow and approximately cylinflange, thereby forming a .seal at the junction of the bottle body and bottom disk and causing 55 the paper of the body section and bottom flange this flange to curve walls, and this spreading or the sealing seat, secures the ring within the ring to spread and flll the space between the walls of the ring. This form or ring may also be employed to secure flanged paper heads similar to the bottle bottom into cylindrical or tapering-containers, and may be used in containers having removable squeeze 'or .push

covers, in which case the ring may be employed either with or without the lateral seating flange. The invention is illustrated in the accompanying drawings, in which Figure 1 is an elevation of a paper bottle having a plaited neck formationand flanged paper paper bottom se- Figure 5 an elevation of a tapered container L having flanged top and bottom heads similar to Figure 4. v a

Figure 6' an enlarged view of the bottle neck ring showing the inwardly curved contraction at the single-ply neck sections ofthe bottleand the inwardly curved and looped formations at the triple-ply plait sections.

Figure 7 an enlarged cross-section onthe line 1-7 of Figures 1 and 6 showing the inwardly curved contraction at the single-ply neck sections and the inwardly curved and looped formations at the triple-ply plait sections.

Figure 8 an enlarged vertical section of part of a container to illustrate the application of a squeeze or push cover. I

Figure 9 an-enlarged cross-section representing the neck ring before contracting the outer flange and showing the thicknesses of paper within the ring and parts of the die members for contracting the ring. 1

Figure 10 an enlarged cross-section representing the neck ring after contraction of the outer flange and showing the shoulder formation of the ring and paper and the squeeze of the paperupon the inner ring shoulder, the section of bottle neck being taken on the line Illl0 of Figure '7. v

Figure 11 an enlarged view showing the bottom ring, bottle body and flanged bottom before squeezing.

Figure 12 an enlarged cross-section of a. modifled arrangement of the squeeze or push cover shown in Figure 8.

are shown in enlarged cross-sectionvin Figure 9 and after contraction in Figures 10 and 14. In Figure 10 a plait 3 is shown squeezed against the slightly rounded shoulder I of the flange 5 by the shoulder 8 formed on the outer flangeof the ring in its contraction, and the spread of the paper within the ring, and in Figure 14 is shown the squeeze at the single-ply sections of the bottle neck. This ring is contracted by a die having a male member 9 in which the ring is seated, an anvil member III. which enters the ring and holds the flange 5 seated on the male member, and a female member ll having a curved shoulder I: by l3, Figure 9, of ring 4 is curved inward to contract the ring as it is driven into the member I I by member 9. In contracting the ring, the outer flange curves inward and compresses the paper at the ring shoulder I and contracts the bottle neck slightly over the shoulder and flange 5, Figure 10. In this operation the edge ii of thering 4 at the bottle neck sections l4, Figure 6, between the plaits 3, curves inward andcontacts the paper sections I4 and plaits 3. The resistance'to the inward curvature of the ring as the paper is compressed against the shoulder 1' causes the edge l3 of the ring to curve upward parallel to the paper as seen in Figure 10, while the ring sections adjacent the bottle neck sections l4 continue to curve inward, and the final squeeze of the ring between the die members results in the formation of flanges l5 and It, as

seen in the enlarged view Figure 6, the flange l5 being of less depth than flange I 6 owing to. the difierence in paper thickness of plaits 3 and neck sections I4, and therefore the edge 13 extends further inward at the neck sections I4. I

The contraction of the ring beyond the plaits results in the formation of loops l I and the deep Figure 13 a view similar to Figure 12 showing I the ring with the inner lateral flange for seating a sealing gasket, and

Figure 14 an enlarged sectional view illustrating the squeezeof the single-ply sections of the flanges 16 over the plaits as seen in Figure 7. The final squeeze of the'ring between the die members imparts definite form to the outer ring shoulder .8 and firmly presses flanges |5|6 against the neck sections l4 and plaits 3 and the contracted part of the neck upon the ring shoulder I. Also the flnal squeeze of the ring forms the outer flange into a bead for the mouth of the bottle by which the bottle may be grasped and which bead serves as an anchorage for securing an overall cap when such cap is employed in addition to the usual sealing disk 6. This method of applying the metal ring to the mouth of the bottle effects a dense packing of the paper between the shoulders I and I, the spreading of the paper within the ring to flll the space between the walls of the ring, and a substantial shoulder to the paper of the bottle neck which prevents the neck ring being pulled bottle neck upon the inner shoulder of'the neck ring, the section of the bottleneck being taken on the line l4-l4 of Figure 7. v

Referring to the drawings, I indicates the body of a paper bottle having a necktformed by contracting one end of the tube into loops which are flattened to form plaits 3 The p'laits are secured by a metal neck ring 4 which forms the mouth of the bottle. This ring is U-shaped in cross-section, the outer flange of which is deeper than the inner flange, and the inner flange having a narrow lateral flange 5 to form a seat for the usual sealing disk 6, Figure 2.

Ring 4 before contraction and the plaited neck -6 firmly to its seat on off. Another important feature applied in this manner is that flnal'squeeze in the die, the pressure of the die members on the ring between shoulder 8 and the of the neck ring curvedseat in the male member causes the curve of the ring to spread slightly in the ring seat of die member 9 (for which purpose the groove in the die'member 9 forming the ring seat=is made wider than the ring to provide a slight clearance at the inner circumference of the ring as seen in Figure 9) and this spreading decreases the inner diameter of the ring at as seen in Figures 2 and 10, thereby providing a slight head or taper 4 to the inner surface of the ring which serves to hold the sealing disk flange 5, Figure 2. The paper bottom It has a flange I9 which fits means of which the edge in imparting the the outer edge closely within the bottle body I, Figures 3 and 11, and closely over the inner flange of the U-shaped metal bottom ring 20, This ring has an internal lateral flange 2| and the depth of bottom flange i9 is such that the bottom disk I8 seats closely upon flange 2| as seen in Figures 3 and 11. The outer flange of ring 20 is deeper than the inner flange and the ring before contraction to clinch the bottom in position is similar in cross-section to the neck ring. This ring is contracted by a tool having a contraotible spring ring which draws the ring .20 into conical form with a narrow and approximately cylindrical flange 22 to an internal diameter, above the shoulder 23, smaller than the external diameter of the bottle body, or approxi- =mately equal tothe internal diameter of the body and the external diameter of bottom flange l9, and thereby drawing the body slightly inward as seen at 24, Figures Land 3, pressing the paper of the body and 'bottom'uiisk upon the shoulder 23 and efiecting a tight joint'at the circumference of the disk by pinching the paper at an angle to the shoulder 23 as indicated by the dotted line 25', Figure 3, and this pinching of the paper at that point causes the paper within the ring to spread below the pinch. As a result of the contraction of the bottle body as indicated at 25, the spread of the paper within the ring, and the formation of a shoulder in the bottle body under the ring section 22, the body and bottom are firmly locked within the ring, and due to the flange 2| and seating of the bottom over the curvedshoulder 23 cutting of the bottom disk or its flange is prevented and possible leaks avoided.

In Figures 4 and are shown two forms of containers as distinguished from bottles. In this form a plain cylindrical tube 26 or conical tube 21 are provided with a bottom like the bottom IS in Figure 3 and secured by a like ring 21!. The top or head is formed with a flanged paper disk like bottom i8 and is secured by a ring 20 after the container is fllled. The clinching of the ring to lock the bottom and head in position is performed in the same manner as clinching the bottom ring of the bottle and the joinder of the parts will be as seen in Figure 3.

In Figure 8 is shown a section of a container top having a ring 28 similar the lateral flange 2| is omitted and the container is closed by a dished squeeze or push cover 29 which may be of heavy paper or metal.

In Figure 12 is shown another form of container top which may be employed. In this form a head 38 which may be of paper or metal foil having a flange 3| is clinched to the body 26 by ring 28, similar to the ring in Figure 8, and above the head 30 is inserted a dished push cover 29.

In Figure 13 is shown another form of container top in which a ring 26 like ring 20 of the bottle bottom having the flange 2| is employed to seat a sealing gasket 32 to be used in conjunction with a push cover 2s.

The bottles and containers made in accordance with our invention are treated or coated with a waterproofing material, preferably paraffin, for milk and food products.

The steps of the method and the machine for attaching the neck rings to bottles, and the machine for attaching the bottom rings to bottles and containers form no tion, and therefore are not shown in detail and will be embodied and described in detail'in separate applications for patents.

What we claim is:

1.\ In a'container' of the class described, the

part of the present invencombination of a body member, a flanged bottom member fitting into the body member, and a 'metal ring member for clinching the bottom to I the body form said ring shaped in cross-section and the outer flange deeper than the inner flange and the inner flange having a rounded shoulder upon which the bottom member rests, and the outer flange contracted to a conic section opposite the inner flange and an approximately cylindrical section above the' inner flange forming an inward shoulder on the outer flange which presses the body member xinward over the bottom, member and both to= gether upon the rounded shoulder of the inner flange of the ring. Y

2. In a bottle shaped container, the combination of apaper body member formed from a tube one end of which is shaped into a neck by forming loops which are flattened into plaits, a bottom member secured within said body member, and a metal ring member clinching the plaits and forming the bottle month, said ring before clinching being U-shaped in cross-section and the outer flange deeper than the inner flange and the irmer flange having an inwardly projecting rounded shoulder, and the outer flange being contracted below said shoulder to form loops over the plaits and contracting the bottle neck under and compressing the paper upon the rounded part of said to ring 20 except that shoulder and said ring contraction transforming the outer flange into an outward circumferentialbead.

3. In a bottle shaped container, the combination of a paper body member formedfrom a tube one end of which is shaped into a neck by forming loops which are flattened into plaits, a bottom member secured within said body member, and a metal ring member clinching the plaits and forming the bottle month, said ring before clinching being U-shaped in cross-section and the outer flange deeper than the inner flange and the inner flange having a closure seating flange and rounded shoulder, and the outer flange being contracted below said shoulder of the inner lateral flange of the ring to form an inward shoulder on the outer flange and loops over the plaits and contracting the bottle neck under and compressing the paper upon said rounded shoulder, and said inward shoulder formation of the outer flange transforming same into an outward circumfer-' ential bead, andthe clinching pressure on the ring eiiecting a reduction of the internal diameter of the ring above the seating flange for holding a closure disk to the seat. I

4. In a bottle shaped container, the combination of a paper body member formed from a tube one end of which is shaped into a neck by forming loops which are flattened into plaits, a flanged bottom member fitting into the body, a metal ring member for clinching the bottomto the body, said ring before clinching being U-shaped in cross-section and the outer flange deeper than the inner flange and the inner flange having a flange forming over the bottom member and both together upon the rounded shoulder of the inner flange of the and a metal ring member clinching the ring, plaits and forming the bottle mouth, said ring before clinching being U-shaped in cross-section before clinching being U- I and the outer flange deeper than the inner flange and the inner flange having a closure seating flange and rounded shoulder, and the outer flange being contracted below said shoulder to form loops over the plaits and contracting the bottle neck under and compressing the paper upon said rounded shoulder, and such ring contraction transforming the outer flange into an outward circumferential bead.v

5. In a container of the class described, the

combination or a round body member, a closure member at one end thereof, and a metal binding and stifiening ring member clinched on said body

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