US2671593A

US2671593A - Paperboard container

Info

Publication number: US2671593A
Application number: US270461A
Authority: US
Inventors: John E Page
Original assignee: GIBSON PATENT CONTAINERS Ltd
Current assignee: GIBSON PATENT CONTAINERS Ltd
Priority date: 1952-02-07
Filing date: 1952-02-07
Publication date: 1954-03-09
Anticipated expiration: 1971-03-09

Description

March 9, 1954 J. E. PAGE l,2,671,593 PAPERBOARD coNTAmER Filed Feb. '7, 1952 6 Sheeis-Sheet l l 52 39 HX E 39 3l 1 2li, D

5H as a \\35 1 i/I 8' i: Livx5, Lf

3 j@ J A /4- Ill IN V EN TOR.

JOHN E PAGE .BY v

J. E. PAGE PAPERBOARD CONTAINER March 9, 1954 `6 sheets-sheet 2 Filed Feb. 7, 1952 5 JNVENTOR. JOHN' E .PAGE

/i T TUR/Vf Y March 9, `19541 J. E. PAGE PAPERBOARD CONTAINER Filed Feb. '7. 1952 6 Sheets-Sheet 3 JNVENTOR. JOHN E. PAGE -BY www /4 TTORNE Y March 9, 1954 J. E. PAGE 2,671,593-

PAPERBOARD CONTAINER Filed Feb. '7, 1952 6 Sheets-Sheet 4 INVENToR. 34, 59 IZ JOHN E. PAGE g@ kw fsf-Hifi BY j i* "d7 W D 33 3l ATTORNEYS March 9, 1954 .1. E. PAGE 2,671,593

PAPERBOARD CONTAINER Filed Feb. v, 1952 6 sheets-sheet 5 /Q A Z0 i INVENToR.

ggf', 3 JOI-1N E. PAGE r BY A TTORNE Y March 9., 1954 1 E, PAGE PAPERBOARD CONTAINER 6 Shee'ts-Sheet 6 Filed Feb. 7. 1952 INVENTOR. JOHN E. PAGE ATTORNEY liiiil lip section will tenaciously grip the container body and retain the closure disc in container closing position. To obtain access to the contents, the cover disc is forcibly withdrawn through the opening defined by the rim bead section. The top rim member may then be pushed downwardly until the upper edge of the container body is seated within the internalV channel of the bead section, with the bead section embracing the upper edge of the container body and thereby prevent inward collapse thereof. The rim lip section is shaped and formed to readily permit downward telescoping movement of the top rim member over the upper end of the container body, and to tenaciously resist upward withdrawal thereof.

By this invention, a substantial saving in paperboard stock normally required to provide the outturned rim locking flaps is effected, and

a Substantial saving in labor and machine overhead required to outfold the locking flaps and compress the same against the outside face of the blank is also thereby effected. Additionally, very substantial savings are effected in transportation and storage costs by the elimination of the outturned rim locking flanges from the collapsed container body, since collapsed container bodies having cutturned locking flanges occupy, when compactly stacked together, approximately twice the space required for container bodies without such outturned rim locking flanges.

These improved containers are designed to be manufactured from relatively low cost materials employing low cost fabrication and assembly procedures, with the consumption of very minimum of materials, providing the ultimate in economy packaging of relatively bulky, heavy and semi-liquid products, and possess the leakproofness andv strength which make them particularly desirable for the commercial packaging of suchA products as ice creams and sherbets.

Various other novel features and advantages of this invention will be apparent from thev accompanying drawings, in which:

Fig. 1 is a perspective view of a collapsible container madev in accordance with this invention, certain parts being broken away to illustrate certainV details of the bottom and cover construction;

Fig. 2 is an enlarged fragmentary vertical cross sectional view of the upper part of the container asV viewed along line 2-2 of Fig. 1 showing more particularly the cover end disc and its associated retaining rim as applied to an empty f container body;

Fig. 3v is an enlarged fragmentary vertical cross sectional view of the lower part of the container as viewed along line 3-3 of Fig. 1 showing in further detail the bottom rim and associated bottom disc as wedge-locked to the container body;

Fig. 4 is a plan View of the outside face of the preferred form of the fully formed container body blank showing the expansion scoring, folding scores and circumferential skirt defining scores impressed therein ready to be folded to provide a tubular body;

Fig. 5 is a perspective view of the body blank shown in Fig. 3 in the process of being folded to provide a collapsed tubular body;

Fig. 6 is a horizontal cross sectional View of the container body as it would appear when fully assembled into flat collapsed form for stacking;

Eig. 7 is4 a perspective view illustrating the lil) 4 manner in which the bottom skirt section of the container body may be located and inserted into the bottom rim;

Fig. 8 is a perspective view of the bottom forming disc;

Fig. 9 is a perspective view of the cover forming disc;

Fig. 10 is a plan view of therim member forming a part of the cover assembly for this improved container;

Fig. 1l is an enlarged fragmentary cross sectional view. of the cover rim member as the same would appear when viewed along line Il-Il of Fig. 10;.

Fig. 12 is a fragmentary elevational view of the inside face of the cover rim member showing the manner in which the ends of the band forming the rim may be joined together as the same would. appear when viewed in the direction of the arrows |2-I2 of Fig. 10;

Fig. 13 is an enlarged fragmentary plan view of a cover rim in which the free edge of the inturned body gripping lip thereof is saw-toothed or serrated to provide a roughened edge;

Fig. 14 is a perspective view of the closure cover showing the cover end disc positioned within the cover rim, certain parts being broken away to show structural details;

Fig. 15 is a fragmentary perspective view showing the upper part of the container body as it would appear when filled with contents ready to receive the closure' cover shownin Fig. 1.4;

Fig. 16 is a fragmentary perspective View of the upper section of the lled container body with the closure cover applied. thereto, the cover end disc being partly broken away to reveal structural details;

Fig. 17 is another fragmentary perspective view of the upper section of the filled container body with the closure cover applied thereto, this view illustrating the manner in which the cover end dise may be removed from the assembly to obtain access to the container contents;

Fig. 18 is a further fragmentary perspective view of the upper section of the container body showing the contents partly removed and the cover rim telescoped into firm gripping engagement with the upper skirt section of the container body to thereby firmly retain the upper end of the container body in fixed cylindrical form and prevent inward collapse thereof as the contents are removed;

Fig. 19 is a greatly enlarged fragmentary vertical cross sectional View of the upper portion of this improved container as viewed along line IS--IS of Fig. 16, illustrating the manner in which ice cream, fruit juices, and the like as frozen in the container body, will expand the upper skirt section of the container body into the cover. rim of the applied closure cover; and

Fig. 20 is another greatly enlarged vertical cross sectional View of the upper portion of the container after the closure disc has been removed and the cover rim has been telescoped into embracing relation with the upper skirt section of the container body and as the same would appear when viewed along liney 251-20 of Fig. 18, this view also showing the cover rim in dotted lines as it would appear prior to being telescoped into embracing relation with the upper skirt section.

Similar reference characters refer to similar parts throughout the several views of the drawings and specification.

Asvr illustrated in Fig. l, containers constructed in; accordance with this invention comprise a container body A formed from a rectangular blank of paperboard material. The bottom end closure comprses'a hoop shaped rim member B which embraces the lower end of the container body. An oversize bottom disc C' is forcibly telescoped into the container body to provide a strong and substantially leakproof wedge-locked bottom construction as illustrated in Fig. 1. The cover end closure comprises a rim member D within which a cover closure disc Eis inserted, the cover closure disc being designed to seat against the top edge of the container body as illustrated in Figs. 1 and 2.

The container body A is formed from a rectangular blank of selected paperboard material economically sized and proportioned to eliminate Waste in cutting body blanks from the sheet or roll Vof paperboard stock. While higher quality and more expensive fiber stock can be used in the fabrication' of the container body, containers having 'bottom and cover assemblies made in accordance with this invention, permit the use of relatively inexpensive paperboard stock having an inner core a sheeted from wastepaper or newsprint; andlaminated between a thin innerliner b sheet of bleached suli'lte for sanitation, and a thin outerliner c sheet of unbleached kraft to give the container body a finished appearance and protection to the. inner corea.

Such paperboard stock is the least expensive fiber stock available to the container industry. However, such paperboard stock has deiinite limitations. In toughness and foldability it is substantially inferior 'to the Vmore expensive virgin wood stock or long fiber stock, but it does possess substantial stiffness. The stiffness attribute of inexpensive paperboard is ingeniously employed in accordance with this invention to provide a strong, serviceable and leakproof shipping container meeting the low cost packaging needs and requirements of the ice cream industry.

Containers having the capacity to contain up to five or more gallons of ice cream and ices may advantageously and economically employ inexpensive paperboard stock for the container bodies which calipers from thirty to forty-thousandths of an inch in thickness, and wherein the major thickness comprises the wastepaper pulp core a laminatedA between thin paper inner and outer liners b and c as above described. As shownv in Figs. .4, 5 and 6, the container body is made from a paperboard blank which presents parallel extending top and bottomedges I and 2 and parallel -side edges 3. A pair of parallel extending collapsing scores. 4 traverse the entire length of the blank, thus dividing the blankinto an inter,- mediate section 4' and end sections 4". The intermediate section y4 as dened between the collapsing scores 4 is of such width as to extend a distance of 180 around the expanded tubular body. The parallel extending collapsing scores 4 permit folding of the end sections 4 to overlie the intermediate section 4 as shown in Figs. 5 and 6, the combined width of the end sections 4". being slightly greater than the width of the intermediate section 4 to provide inner and

outer overlap extensions

5 and 5 at the sides of the. blank, so that the outer overlap extension 5 may be secured as by adhesive g to the inner overlap extension 5'. When the

overlap extensions

5 and 5 of the end sections 4 are adhesively secured together, a flat `collapsed body as shown in Fig. 6 is provided. Collapsed container bodies formed as shown in Fig. 6 may thus be vertically stacked in compact relationship to occupy a very minimum of space in shipment and storage.

As shown in Figs. 1, 3, 4 and 5, the body blank may have a bending score 6 impressed into the paperboard spaced from and extending parallel to the bottom edge 2 thereof, to thereby define a bottom skirt 'I which has a width equal to the inside height of the bottom rim B of the container. As shown in Figs. 1, 2, 4 and 5, a circumferentially extending primary score 8 is impressed into the outer surface of the container body a distance from edge I thereof to define a top skirt section 9. A secondary circumferentially extending score 8 is impressed into the outer surface of the container body directly below and parallel to the primary circumferentially extending score 8 a distance z from the top edge I of the container body. The center lines of the primary and secondary scores 8 and 8' are spaced apart a distance y.

To accommodate expansion of the freezing ice creams and ices, and to facilitate cylindrical shaping of the container body, expansion scorings I extending longitudinally of the container body are desirably provided as shown in Figs. 1 and 3. The parallel expansion scorings Ill may be uniformly spaced approximately three-fourths of an inch to one inch apart; each score having a width in the approximate order of three sixtyfourths of an inch and a depth in the approximate order of five to ten thousandths of an inch.

The collapsing scores 4 and the primary and secondary

top scores

8 and 8 may have approximately the same width and depth as the expansion scorings I0. The bottom skirt defining score or fold line 5 may be very light and need not be more than five thousandths of an inch in depth. The

circumferential scores

6, 8 and 8', the collapsing scores 4 and the expansion scorings IG are all sunk into the outer face of the blank, producing corresponding protuberances or ribs on the inside face of the blank. It will be noted that the bottom skirt portion 'I and top skirt portion 9 are not severed or broken. The ends I6 of the expansion scorings preferably terminate at the bottom circumferential score 6 and the secondary top circumferential score 8', so that the bottom end vtop skirt portions 'I and 9 are not transversed thereby. As shown in Figs. 4, 5 and "I, the upper end o-f the outer overlap extension 5 is desirably cut away to present a cutout notch 5 so that when the container body is fully assembled, the upper end of the double ply overlap will be of single ply thickness as shown in Figs. 7, 15, 19 and 20.

Body blanks made as illustrated in Fig. 4 are adapted to be cut to their true and nal shape from selected sheets or rolls of paperboard stock and simultaneously scored as selectively desired, with substantially no waste of paperboard stock, and in a single pass through an automatic cutting and scoring machine. Such machine would be equipped with cutting knives set to cut and define the top and bottom edges I and 2 and side edges 3 of the blank, with notch cutout 5, to accurate dimensional requirements. and with scoring blades dimensionally set and arranged to impress the horizontal scores E, 8 and 8', the collapsing scores I, the expansion scorings il) therein to precise spacing and dimensions in a single pass operation.

After the body blanks have been cut and scored, the blanks are designed to be run through a continuous strip gluing and folding machine equipped with a glue applicator which applies the strip of adhesive g to the inside face of the side edge portion of successive blanks, with folding mechanism which alternately folds the end sections 4 over the intermediate section ll in rapid progression. and with a pressure roller which operates to rmly press the overlapped edge portions 5 and 5f of the blank into rm adhesive contact and simultaneously flatten the collapsed body into the compressed form shown in' Fig. 6 for compact stacking. The folded and compressed blanks may thus be completely assembled economically and at high speed in a single pass through the gluing and folding machine, and as thus produced are ready for compact shipment to the product manufacturer for erection, filling and closing with the supplied bottom rims B, bottom discs C, cover rims D and cover discsE.

The bottom rim member B constructed and formed as illustrated in Figs. l, 3 and 7 may be economically made from a relatively thin gauge strip of sheet metal. In the construction of containers approximating eight to ten inches in diameter and of a, size to contain two and onehalf to live gallons of creams or ices, the rim forming metal strip may measure approximately three-fourths to one inch wide and from ten to fifteen thousandths of an inch in thickness. As formed, the bottom rim is in the shape of a hoop. presenting a side wall section II, an inturned supporting ange I2, and an inturned body gripping lip i3, with the ends of the strip welded together in a manner to provide a bottom rim of accurate circumferential dimension. To strengthen the rim construction and to stiien the inturned flange l2 upon which the bottom disc C is supported, the ilange I2 may be provided with radially extending corrugations Ill. The inturned body gripping lip I3 may extend inwardly substantially parallel to the inturned supporting flange I2, or maybe inclined at an acute angle of 60 to 80 towards the supporting flange I2 as shown in Fig. 3.

To achieve maximum wedging interlock between the bottom skirt I of the container body, the bottom rim B and bottom disc C, and thereby effect unyielding securement of the bottom rim to the container body, requires a definite dimensional inter-relationship between the parts. Thus the bottom rim should conform to denite diametrical and dimensional conditions to most eiectively interlock with the container body and bottom disc of specified diameter.

The inner edge I3 of the lip I3 is dimensioned to snugly seat against the container body along the circumferential line about which. the bottom skirt is flared outwardly when the container is fully assembled. In containers constructed in accordance with this invention, no circumferential extending bottom supporting groove need be impressedl into the container body, since no groove or like abutment is required to provide support yfor the inner edge IS of the inturned lip. of the bottom rim. However, the lightly impressed circumferential score E may advantageously be applied to the container body to visibly deiine the line against which the inner edge I3 of the lip should seat when the container body and bottom rim have been properly assembled together. Thus the horizontal bottom score 6 may be used to facilitate accurate Iassembly of the container.

The bottom forming disc C as shown in Figs. 1,

3 and 8 may be formed from inexpensive paperboard having a wastepaper or newsprint corel a?, an innerliner formed from a relativelyL thin sheet of bleached sulte b for sanitation, and an outerliner c formed from a sheet of unbleachedkratt for appearance and strength. The bottom disc: C is circular to conform with the circular shapeof the bottom rim, and its size is accurately interrelated to the diametrical dimension of the expanded container body and the inside diameter of the side wall section I I of the bottom rimwith which it is to be associated. The bottom disc C should also possess substantial stiffness and strength. Bottom discs for two and one-half and rive gallon containers for ice creams and sherbets, will possess adequate stiiness if the bottom discs caliper sixty thousandths of an inch in thickness to adequately support and contain two and one-half to five gallons of creams and juices.. The bottom discs may be die out from a paperboard stock sheet in a single die cutting opera-'- tion at high production speeds with a, minimum of waste material resulting. The bottom discs are accurately shaped to dimensional requirements by the die cutting operation, soY that no further fabricating operation thereon is required. The flat bottom discs may be compactly stacked together for shipment to the product manufacturer for use in assembling the container as required.

In assembling the container, the container body A is partially expanded as shown in Fig.v l while the body is gripped adjacent the. collapsing scores 4, and by exerting inward pressure. there.- on, the bottom skirt portion '1 thereof may be readily inserted into the bottom rim B.. By the' application of outward pressure applied to the` inside face of the container body, the containerl body will then spring out into cylindricalv form. Downward pressure is exerted.- against the top edge I of the container body to make sure that the bottom edge 2 thereof is snugly seated againstA the inturned supporting ilange I2 of the-lzuottorn` rim B. The width of the bottom skirt portion 1 is such as to seat between the free edge I3 of the inturned body gripping lip I3 and' theinturned supporting iange I2 of the bottom rim. Full insertion of the bottom skirt portion 'l into the bottom rim may be made visibly evident by the provision-of the circumferentially extending4 bottom score or marking line B therein, against which the inner edge I3 of the rim lip I3 is. to abut.

'Ihe oversize bottom disc C is then telescoped. into the expanded tubular body and skewed intn position past the internal contracted throat Z1: of the container body and forced into seatingzpol sition against the corrugated flangev section I'21o1' the bottom rim B. The relatively stii oversize bottom disc C causes the bottom skirt section T to flare outwardly, as shown in FigsnlI and' 3; with the lower portion of the skirt sectionv 'IV pinched between the peripheral edge 2| of the bottom disc C and the adjacent inside surface- II' of the rim side wall section I I.. The outward are given to the bottom skirt section I is deter-'i mined by the width of the rim lip section I3 and is limited by the stretch characteristics of paper-v board body stock, the angle of ilare usually being in the order of 8 to 12 as shown in'Fig. 3.

Because of the angular inclination given to the rim lip section I3, its relatively sharp or serrated edge I3 will bite into the body stock at the cii-, cumferential bending score B thereof, and Whenthe bottom skirt section 'I is additionally `filmini,

outwardly by the oversize bottom disc C at an angle of from 8 to 12, the bottom rim will be tenaciously secured to the container body by wedge-locking action. This wedge-locking action operates to drive the lower edge of the skirt section 1 against the inside face of the flange section l2, exerts a bending force on the bottom skirt section 1 which is resisted by its natural stiffness and finally exerts a lengthwise compressive force on the bottom skirt section which is also resisted by its natural stiffness. As thus contructed, this bottom closure provides a strong and leakproof bottom construction for the paperboard container body which does not require the provision of any outturned and upturned rim supporting ange on the container body, but takes full advantage of the stiffness characteristics of the relatively inexpensive paperboard stock from which the container body is formed.

The top rim member i3 may be formed from a thin strip of relatively strong and rigid material, such as fibre, plastic or a light gauge metal strip, shaped into the form of a hoop to provide a substantially cylindrical side wall section 3| having an inturned curvilinear bead section 32 at one end thereof and in inturned lip section 33 at the other end thereof. As shown more particularly in Figs. 2 and 10 to 14 inclusive, the lip section 33 is bent at an acute angle of from 60 to 80 to the side wall section 3l, and preferably at i" an angle of from 60 to 75 thereto.

Since the material from which the rim inember is formed is relatively thin, the free terminal edge 34 of the lip section 33 presents a thin edge which serves to firmly grip the exterior cir- 3 cumference of the container body A to which it is applied. To further facilitate the gripping action, the lip section 33 may be provided with a saw toothed or serrated edge 34' as illustrated more particularly in Fig. 13.

` 'I'he curvilinear bead section 32 of the rim member presents a downwardly extending leg portion 32' which is substantially parallel to the side wall section 3| and is connected thereto by a crown portion 32" which may be curvilinear in shape to facilitate its formation. The ends of the strip may be connected together to form a substantial circular hoop by providing a side wall extension 35 at one end of the strip which smoothly overlaps the side wall section 3| at the i other end of the strip, as shown in Figs. 9 and 1l. The end extension has a lip section 33 and curvilinear bead section 32 removed therefrom whenV the hoop is fully formed, so that the terminal'- ends 33 of the bead section 32 and the terl 10 ing edges which accurately determine the diametrical dimension of the hoop as the spot welds 38 are applied.

The cover disc E may be economically die stamped from a sheet of paperboard material which may caliper from thirty to forty thousandths of an inch in thickness. rThe cover disc as die stamped from the paperboard stock sheet thus presents a slieeted wastepaper or newsprint core a faced by a bleached suliite innerliner sheet b for sanitation and an unbleached kraft outerliner sheet c for strength. As shown in Figs. 1 and 14, the cover disc E. has a diametrical dimension which comfortably conforms to the inside diameter of the rim side wall section 3|, with the peripheral edge of the disc fitting within the side wall section thereof. Where the cover disc E is made from paperboard material calipering thirty to forty thousandths of an inch in thickness, is sufficiently flexible to permit insertion thereof through the opening defined by the inner

free edge

33 or 33 of the rim lip section 33, and when fully assembled within the rim member D, is designed to seat against the terminal edge 39 of the rim bead section 32 as shown in Fig. 14.

When the cover end closure is to be applied to a paperboard container body measuring eight to ten inches in diameter, as used in the packaging of two and one-half and five gallons of ice cream and sherbets, the rim member D may be made from metal strip gauging from ten to fifteen thousandths of an inch in thickness or about twelve thousandths of an inch as an average, and having an overall height 1' as shown in Figs. 2 and 19 of approximately one-half inch. The lip section 33 is bent to present an acute angle s of from Ll5" to 80 with respect to the rim side wall section 3|, and preferably in the order of The inside width t of the lip section 33, as measured perpendicularly to the side wall section 3l, may be in the order of one-sixteenth of an inch to ve sixty-fourths of an inch. The diameter of the lip section 33 as measured from LSii the inner edge 3Ll or 3ft' thereof should closely metrical dimension of the rim forming hoop may l be readily attained by making the length of the bead section 32 as measured between the ends 36 thereof, and the length of the lip section 33 as measured between the ends 31 thereof, to accurate and precise measurement. rIhe terminal ends 33 of the bead section 32 and the terminal ends 31 of the lip section 33 may then be brought into abutmentV as the strip is shaped into hoop form, soV that the terminal tends provide gaugconform to the normally expanded diameter of the container body.

The inner channel 39 formed by the bead section 32 thereof should present an inside width o at the mouth opening as shown in Figs. 3 and 19 sufficient to receive the maximum thickness of the upper edge of the body wall of the expanded container body. Thus, where the single ply stock thickness of the container body wall calipers from twenty-five to forty-five thousandths of an inch in thickness and a notch cutout 5 of about three thirty-seconds of an inch is provided at the upper end of the outer overlapping portion 5', the width o of the mouth opening may be in the approximate order of one eighth of an inch, to easily receive the entire upper circumferential edge of the body wall. 1n order that the bead section 32 will adequately receive and grip the entire upper edge of the expanded container body when the cover disc E. is removed and the rim member pushed down into body gripping position, the internal channel should have an internal depth in the order of one eighth of an inch.

When the container body having the bottom construction assembled thereto as above described, is lled with contents to the top thereof as indicated in Fig. 15, the assembled cover closure having the cover disc E inserted within the rim member D as shown in Fig. 14, may then beV applied to the filled container by telescoping Y 1l the inclined lip section y33 and side wall section 3I over the top skirt section 9 of the container body until the cover disc E seats against the top edge I of the topv skirt section 9. As thus applied, the straight edge 34 or the serrated edge 34 of the rim member will grip the container body at the primary circumferential score 8 as shown in Fig. 18. Due to the angular inclina-*- tion of the lip section 33 and the relatively sharp,

roughened or serrated free edge thereof, the top Trim will engage the container body with a tenaoious grip. If creams and fruit juices are packed in the container body and subsequently frozen after the cover closure is applied, the top skirt -section 'I will be ared outwardly as the contents freeze and expand as shown Ain Fig; 19, the por# tion of the container body adjacent the primary circumferential score 8 being prevented from exfpanding by the lip section 33 of the top rim D;

The top cover disc E is preferably made suiiiciently thin so that it will flex when an upward pull is exerted Athereon as by the use oi an -ice pick P as shown in Fig. -l-7, so that the cover disc E vmay thus be -ieadily withdrawn through the opening deiined by the bead section 32 of the rim member. lAfter the cover disc E has been 'with` drawn, a downward push can be exerted 'against the bead section 32 of the top rim D so as to drive the rim side wall section 3| downwardly to the point where the free edge of the rim lip section 33 will seat within the secondary circumferential score 8 of the body as shown in Fig. 20. As thus positioned, the entire top circumferential edge I of the container body will be fully telescoped within the internal channel `39 so that the bead section 32 will retain the upper end of the container body against inward collapse as the contents are removed.

When employing this invention for containers for packaging two and one-half and ve gallons of ice creams and sherbets employing a metal top rim D -having an overall height r of about one-half inch and an interior body engaging height w of about seven sixteenths to fteen thirty-seconds of an inch, and a bead section having an interior depth n of approximately one eighth of an inch, the mid-section of the upper primary score 8 would be spaced a distance a: equal to approximately ve sixteenths to eleven thirty-seconds of an inch below the top edge I of the container body, with the mid-section of the secondary circumferential score spaced a distance e of approximately seven sixteenths to iifteen thirty-seconds of an inch below the top edge I of the container body, and with the mide sections of the primary and secondary

circumferential scores

8 and 8 spaced apart a distance of approximately one eighth of an inch as indicated in Fig. 2. Thus, when the cover disc is removed and the top rim D is pushed downwardly to seat the lip section 33 with-in the secondary circumferential score 8 as shown in Fig. 20, the upper edge I- of the container body will be Vful-ly contained and seated within the internal channel 39 and embraced by the bead section 32 o f the rim, thereby retaining the body in cylindrical form as the contents are removed.

Collapsible containers constructed in accord-'- ance with this invention may be shipped and stored as separate containers as needed for the packaging of ice cream, sherbets, and other semi liquid, granular or powdered products. The end closures are so constructed as to permit the use of collapsible container bodies made from' rela#` tively inexpensive paperboard which havenooutl2 'turned rim supporting flanges, thereby effecting substantial savings in paperboard stock, as Well as in body fabrication and shipping and storage costs.

The bottom rim B and the oversize paperboard bottom disc C are rmly secured to the bottom skirt 1 of the container body by a wedge-locking action. The inherent stiffness and resistance to bending and compression of this inexpensive paperboard stock, often considered an undesirable characteristic in the manufacture of cylindrical containers, is used to remarkable advantage in effecting this wedgeelocking action, whereby a strong and tenacious locking secuiement of the metal bottom rim and bottom disc to `the 'corrtainer body is achieved.

When the bottom closure has thus been 'wedge locked to the bottom skirt section 'I of the coni tainer body and the container body filledrwith contents, the cover closure may be readily telescoped over the upper skirt section 9 of the container body. The sharp or serrated lip edge 34 or 34' will tenaciously grip the container body `at the primary circumferential score 8 and retain the closure disc E in tight container closing posi tion. When the cover disc E has been forcibly withdrawn through the opening defined by the rim bead section 32, the top rim member E may be readily pushed downwardly until the

free edge

34 or 34 of its lip section 33 seats within the -seci ondary circumferential score and theku-pprer edge I of the container body is embraced by the rim bead section 32, therebypreventing inward collapse of the container body as the contents are withdrawn. The top rim member D is fso constructed as to readily permit ldownward telescoping movement thereof over the upper end of the container body even though the `top skirt `sec tion 9 thereof has been expanded outwardly as shown in Figs. 18 and 19 Iby the frozen contents, so that the top rim member D will exert a tenacious grip on the container body when upward withdrawal thereof is attempted.V y I While certain novel features of this invention have been disclosed and are po'ir'tedoutv in the claims, it will be 4understood that various omissions, substitutions and changes may be v`inad by those skilled i the ar't without dp'ai'tiro' the spirit of this invention.

What is claimed isf: u 'Y i. A container body ao closure over iti; nation including, a paperboard container body and a closure cover adapted totelfescope over one end of the container body, "said closure A cover including a relatively stiff im menber having a container bodyv embracing side wall section and an inwardly extending lip section adapted to grip the container body, a removable cover disc associ ated with said rim member providing access to the contents when the cover disc is removed from said rim member, said rim member having a bead section for retaining said cover disc in body closing position, said bead section being so shaped that when the closure disc is removed said beadsection may be 'foi-"ced into embracing en'gage' ment with the upper edge of the container body to prevent inward collapse thereof, and afpwir of spaced parallel score lines extending 'circunrferev en'tially around the container body and impressed' into the outer surface thereof, one of said `score lines being positioned tovreceive" the' -fre'edge of said rim' lip section to thereby retain"v said im member and cover' disc in' body closing position, saidseoondsco're line being positioned' to receive the free edge ofsaid rim lip' section when 'Said cover disc is removed to thereby retain the bead section of said rim member in embracing engagement with the upper edge of the container body.

2. A container body and closure cover combination including, a collapsible container body and a closure cover adapted to telescope over one end of the expanded container body, said closure cover including a preformed relatively stiff rim member of generally hoop shaped form having a substantially circular side wall section designed to embrace the container body, a removable cover disc associated with said rim member providing access to the contents when the cover disc is removed from said rim member, said rim member having an inwardly extending lip section at the lower end thereof adapted to grip the container body and a bead section at the upper end thereof for retaining said cover disc in container closing position, said bead section being so shaped that when the closure disc is removed said bead section may be forced into embracing engagement with the upper edge of the container body to prevent inward collapse thereof, and a pair of spaced parallel score line grooves extending circumferentially around the container body and impressed into the outer surface thereof, one of said grooves being positioned to receive the free edge of said lip section to thereby retain said rim member and cover disc in body closing position, said second groove being positioned to receive the free edge of said lip section when said cover disc is removed to thereby retain the bead section of said rim member in embracing engagement with the upper edge of the container body.

3. A container body and closure cover combination including, a collapsible container body and a closure cover adapted to telescope over one end of the expanded container body, said closure cover including a relatively stiff rim member presenting a substantially continuous side wall section designed to embrace the expanded container body, a lip section extending inwardly from one end of said side wall section presenting a. free edge designed to grip the container body and an inwardly overhanging bead section at the other end of the rim side wall section, a removable closure disc contained within the rim side wall section removable through the opening dened by the rim bead section when said closure cover r is applied to the container body, a primary external groove extending circumferentially around the container body and positioned to receive the free edge of said lip section when the cover disc is in container closing position, and a secondary external groove extending circumferentially around the container body substantially parallel and in spaced relation to said primary external groove, said rim bead section presenting a substantially continuous internal channel designed to embrace the adjacent edge of the container body when said closure disc is removed and said rim member has been forced downwardly to the point where the free edge of the rim lip section seats within said secondary groove of the container body.

4. A container body and closure cover combination including, a collapsible container body formed from paperboard material and a closure cover adapted to telescope over one end of the expanded container body, said closure cover including a relatively stiff rim member formed of sheet metal of relatively thin gauge presenting a substantially continuous side wall section designed to embrace the expanded container body, a lip section extending inwardly from one end of said side wall section presenting a free edge designed to grip the container body, an inwardly overhanging bead section at the other end of the rim side wall section, a removable paperboard closure disc contained within the rim side wall section removable through the opening defined by the bead portion of said rim member when said closure cover is applied to the container body, a primary external groove extending circumferentially around the container body and positioned to receive the free edge of said rim lip section when the cover disc is in container closing position, and a secondary external groove extending circumferentially around the container body substantially parallel and in spaced relation to said primary external groove, said bead section presenting a substantially continuous internal channel designed to embrace the adjacent edge of the container body when said closure disc is removed and said rim member has been forced downwardly to the point where the free edge of the lip section seats within said secondary groove of the container body.

5. A container and closure cover combination including, a collapsible container body formed from paperboard material and a closure cover adapted to telescope over one end of the expanded container body, said closure cover including a relatively stiff rim member formed of sheet metal of relatively thin gauge presenting a substantially continuous side wall section designed to embrace the expanded container body, a lip section extending inwardly from one end ol said side wall section presenting a saw toothed free edge designed to grip the container body, an inwardly overhanging bead section at the other end or' the side wall section oi the rim member, a removable paperboard closure disc contained within the side wall section of said rim member removable through the opening defined by the rim bead section when said closure disc is applied to the container body, a primary external groove extending circumferentially around the container body and positioned to receive the saw toothed edge of said rim lip section when the cover disc is in container closing position, and a secondary external groove extending circumferentially around the container body substantially parallel and in spaced relation to said primary external groove, said bead section presenting a substantially continuous internal channel designed to embrace the adjacent edge of the container body when said closure disc is removed and said rim member has been forced downwardly to the point where the saw toothed edge of the rim lip section seats within said secondary groove of the container body.

JOHN E. PAGE.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,941,619 Page Jan. 2, 1934 1,953,143 Wilson Apr. 3, 1934 2,122,746 Kernahan July 5, 1938 2,134,984 Page NOV. 1, 1938 2,150,308 Annen Mar. 14, 1939 2,161,873 La Grua June 13, 1939 2,188,497 Calva Jan. 30, 1940 2,309,341 Condon Jan. 26, 1943 2,349,730 Horning May 23, 1944 2,457,198 Bell Dec. 28, 1948