US2192424A - Container and method of forming same - Google Patents

Description

lA. BJWILSON 2,192,424

CONTAINER AND METHOD O FORMING SAME vFiled Aug. 27, 1937 Patented Mar. 5,1940

UNITED STATES PATENT oFFicE Allen B. Wilson, Evanston, Ill., assignor to Acme Steel Company, Chicago, Ill., a corporation oi.'

e nunois ApplicationAugustY 27, 1937, Serial No. 161,176

' sclaims. 'wies-39.1)

This invention relates to improvements in containers andits purpose is to provide a new method of forming a container comprising novel means for uniting an annular non-metallic wall and a bottom wall by means of a metallic rim. Containers of this general type are now in quite common use for shipping ice cream and various other commodities and it is important to provide a container formed largely of'non-metallic meml0 bers which may be readily assembled by the user without the use of rivets or other lfastening means.

comprising an annular metallic rim adaptedto 1liA surround one 'end of the annular non-metallic wall of the container with parts -thereof supporting a bottom'wall and with other parts thereof adapted to4 move automatically into interlocking engagement with the annular wall`when the rim zo reaches its normal position `on that wall. An-

other object of the invention is toA provide a new method of forming' a container according to which anA annular collapsible non-metallic wall is first expanded byV the insertion ofy a circular end `wall adapted to t the inner diameter there- I of, after which an annular metallic rim is driven over the end of the annular wall on the outside of'the end wall to cause parts of the rim to bite into the material of the annular wall and other parts thereof to move to a position wherein they support the bottom wall. Another object of the inventionis to provide a container having van annular non-metallic wall and a bottom wall in combination with an annular metallic rim pro-v vided with an inwardly extending transversely corrugated flange adapted to engage and support the bottomwall and having inwardly inclined 'resilient projections adapted to move out# wardly to-permit. the application of the rim to '40. the annular wall and adapted to bite into said annular wall when the rim is in place. Other objects of the invention relate/ to various features of construction and arrangement and tod'e-` v tails of the method which will appear more fully Q5 hereinafter. y

'I'he nature of the invention will be understood from the following specification taken with the accompanying drawing, in which one embodiment is illustrated. In the drawing,

'50 Figure 1 shows a perspective view of a con- The principal object of the present in-. vention is to provideja new form of container strip from which the rim illustrated in Fig. 1 is vformed; e

Fig. 4 shows a perspective view of the'metal strip after it has been operated on to form the transversely corrugated ange which supports the bottom wall; and n Fig. 5 shbws a side elevation of the container with the metallic rim separated from the annular wall and with parts of the container walls and rim broken away, this view illustrating the l0 method of applying the rim to the annular wall after this wall has been expanded by the inser-\ tion of the bottom wall." A

As illustrated in the drawing, the improved container comprises an annular non-metallic 1I- wall I0, formed of lberboard or the like which is constructed by uniting the overlapping edges of a sheet of suitable materialA having such characteristics that the wall may be collapsed into the form of a double foldedsheet for purposes of shipment in a bundle with a number f similar collapsed Walls. The wall l0 is adapted to be closely fitted by a circular bottom wall il which 'may lbe inserted within the wall' l0 to expand it,

asvshown in Fig.` 5. The bottom wall Il is supg5 ported in its normal position, shownin Fig. 2,

by means of an annular metallic rim I2l having a body portion |28 which closelyefits the outer surface of the lower end'of the wall l0 and hav-- ing an v.upwardly and inwardly inclined trans- 30 versely corrugated alge I2b which projects beyond the wall I0 and supports the wall Il. The body portion |28 of the rimy is provided'with a plurality vof .downwardly and inwardly inclined pointed projections |2, punched out of the bodyA 35 of the metal, which are resilient and which penetrate the material of the wall Iiiewhen the rimis in place, as shown in Fig. 2, to prevent th withdrawal of the rim.

'I'he rim l2 is preferably formed from a strip 40' of sheet metal having the form shown in Fig. 3, this stripbeing cutaway at one end asl shown at I2d to provide a tongue of lesser width than the remainder of the strip. Having provided a 'strip with `this cutaway portion, the lower edge '45v thereof is then bent transversely and is transversely corrugated as shown in lilg.V 4 to form the ange 52h". -While 4the strip is in 'its fiat condition, and either before or after forming.

the ange l2, the body portion'of the strip is 50i parts have been formed, the strip is bent into 55 I circular form with the ange I2* and the pro'- iections |2 directed inwardly. until the tongue I2 overlaps -the body oi' the strip atthe other end thereof. The overlapping parts are then secured together by spot welds Il or other fastening means to form the completed rim.

According to the preferred process of assembling the parts of the container, the -wall I0 is iirst expanded by inserting therein the bottomwall Il until this bottom wall is near the -lower end of the annular wall, as shown in Fig. 5, and the rim I2 is then driven onto the lower end of the wall I0, until the iiange I2h occupies the pos ition shown in Fig. 2 with respect tothe lower end of the wall I0. During this process of driving on the rim, the projections I2 will bend outwardly to allow the movement of the rim, but

when the rim reaches its final position they tend to move inwardly, due to their own resilience, until they bite into the material of the wall I Il to prevent the withdrawal of the rim. If the bottom wall Il is not then in position resting on the nange ilh it may be pushed downwardly to a'further extent until it is supported by this' i'iange of the rim.

Although one form of the inventionhas been shown and described by way of illustration in connection with' the explanation of one method adapted v.to iit within said annular wall, expanding said annular wall by inserting said end wall therein, and then driving onto the end ofsaid annular wall.a complete annular metallic rim having resilient projections adapted to be de"- ilected outwardly during the driving operation.-

2. The method of forming a container which comprises the operations of forming lan annular collapsible non-metallic wall and an end wall adapted to t within said annular wall, expandingv said annular wall by inserting said end wall therein, and then driving onto one end of'said annular wall a complete annular metallic rim a having an inwardly extending ange adapted to support said end wall andlhaving inclined resilient projections adapted to be deflected outwardly during the driving operation and to penetrate said annular wall after said rim is in place. Y I

3. The method of forming a container which comprises the operations of forming an annular collapsible non-metallic wall and an end wall adapted to -iit within said annular wall, expanding said annular wall by inserting said end wall therein, and then driving onto one end ofsaid f annular-wall a complete annular metallic rim of a size adapted to fit over said annular wall and provided with an inwardly extending flange adapted to support said yend wall4 and also with resilient pointed'projections inclined toward the 'adjacent end of said annular wall and adaptedv l to be deected outwardly during the driving operation and to penetrate saidannular wall due to 'their own resiliency after said rim is in. place thereon. ,ALLEN B. WILSON.

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