US1409336A - Can construction - Google Patents

Description

D. J. FAHLMAN.

CAN CONSTRUCTION. APPLICATION EILED DEC. 6 1.920.

1,409,336; Patented Man 14, 1922.

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Duncan 3. renmvraiv, or nnrnorrgniciireau, assienor. 'ro BuHLfs'IAMI-mw COMPANY, or DETROIT, MICHIGAN, A CORPORATION or MICH G N. p

Y can cous'rnuorioiv.

To all whom it may concern. I k Be it known that I, DUNCAN J. FAHLMAN,

residing at Detroit, in the county of NVayne and State of Michigan, have invented certain new and useful Improvements in Can Constructions,-of which the following is aspecification, reference being had therein tov the accompanying drawings. e

This invention relates to metal containers such as cans and the like made from sheet metal and particularly adapted-for the carrying andtransportationof ice cream and similar products, 'which; cans are subj ectto rough usage. l. V

An object of the invention isto prov de a sanitary container havingan upper edge reinforcement providing} a smooth, rounded upper edge for the can and which. isso. constructed as to prevent the'openingupof any seams for the lodgment of foreign matter andthus make the can sanitary. :It is also an obj ect of theinventionto soiconstruct the reinforcement as to provide a continuous smooth-inner surface for the-*wallof the can from end to end thereof and toapply the reinforcement insuch a manner "asto provide for the tinning of parts-before assembly, thus preventing the metal becoming unsanitary.

A further object is to so construct areinforcement fora can body having overlapping edges that the overlap of the body may substantially continuous end edge with the re-inforcement connecting and holding this edge portion and thus provide a very rigid upper edge for the can. It is also an object of the invention to provide certain other new and useful features in the construction and arrangement of parts, all as hereinafter more fully described and particularly pointed out in the appended claim, reference being had to the accompanying drawing, in which Figure 1 is a side elevation of a. container illustrative of the invention and showing parts broken away and in section to more clearly disclose the construction; v

Fig. 2 is an end elevation of the same with a portion of a re-inforcing rim member broken away;

Fig. 3 is an enlarged sectional detail of the upper end portion or rim of the container with a re-inforcing ring applied thereto, and

Fig. 4 is a perspective detail illustrating Specification of Letters Itatent; v Patented Application filed December a, 1920. Serial no; r te.

a citizen of the United States of America,-

from rusting and Mar.14, 1922,

the construction of a portion of thecoiitaineu body. i

As shown in the drawing, llrepres ents body of the container whichis formed from a single sheet of meta-lrolled into. tubular form with its edges overlapped, oneof-said edges being offset, as at 2, the thickness 'of the sheet metal to overlap the adjacent edge, I

upstanding flange 6 jforming a hoop or r ng embracing the lower end of'l the body and. secured thereto in anysuitable mannen, V

, fAdjaCent, itslupper "end. or :rim, the body" :1,

is oifsetloutwardly, as at 7, thusproviding a: rim portion "8 of slightly greater diameter thanthe diameterof the body. To reinforce and strengthenthe upper end or rim; ofthe metalwith' its upper. end-portion turnedim wardlyand downwardly to provide an insideflange 10, which is spaced fromythe body of thering 9 to receive the end flange 8 of the.

body, a hoop or, ring 9, is rolled frorn isheet body, thefring being rolled inwardly to form i the {flangeflO and .thus p roviding smooth roundedfinish for the upperedge or rim "of the can. 4 The ofiset rim portion'8 of the body is preferably offset a distance equalto the thickness of the flange 1O andthusthe innersurface of said flange lies in the plane of the inner surface of the can body. The slight notch 11 which is formed by the ofisetting of the body adjacent the lower edge of the flange 10, is preferably filled in with solder or other suitable material to provide a smooth flush interior surface for the can which will afford no place for the lodgment of matter which would make the can unsani tary. The ring 9 embracing the body is formed at its lower edge with a bead 12, the edge of. the metal being turned inwardly toward the can body to give a smooth surface and the bead provides a stop for a suitable cover or closure. (not shown) for the can, which is slipped over this ring. The ring 9' thus provides a very strong edge re-inforce ment for the upper edge or rim of the can" to prevent the same from being bent out of shape, the inturned flange 10 of the ring providing a rounded smooth rim and an edge portion'for the can which is formed of three thicknesses of metal. As the metal of the 3O ring for the upper end of the can'portion, all

ring itself is turned inwardly and over the edge of the can body, there is no edge seam which is liable to open should the rim of the can be dented or distorted in any way, and thus the lodgment of dirt is prevented.

In the manufacture of containers, the body of the can may be rolled and formed with the offset edge portion 8 and then tinned. The ring 9 with its inturned flange 10 may be formed up complete, then tinned and thereafter applied to the end of the body,

3 thus providing for the tinning of every part to prevent rusting.

When the body 1 is formed with the offset edge flange 2, this flange is cut away adjacent the offset or outwardly bent end portion 8 of the body so that the edges of this end portion or flange 8 may lie in abutting relation when the edges of the body are secured together by the rivets 3. The end edge or rim of the offset flange 8 isthus made continuous around the can to receive the channel of the re-inforcing ring 9 which channel is formed bv-the inturning of the flange 1O thereon, and thus the unconnected edges of the offset rim portion 8 are'securely connected and held by the application of the're-inforcing ring to the upper end of the body. l c

By providing the channeled reinforcing joints or places for thelodgment of dirt are eliminated and a very strong rigid construction proyided which will withstand the hard usage to which containersifor this purpose are subjected, and further, as the body is rolled from a substantially flat continuous sheet .of metal,hardened sheet steel may be employed, and thus the container is further strengthened and a body provided which having an outwardly offset end edge portion, and a reinforcing ring for said end of said body formed with'a channel to receive and embrace the offset portion of the body, said channel being formed by turning an edge portion of the ring inwardly and downwardly to form a long flange portion engaging the outer face of the offset end portionof the body and a short flange to engage and lie flat upon the inner face'of said portion with its inner surface lying in the plane of the innerIsu-rface of the wall of the body 7 below said oflsetportion,saidlong flange being inturned along its' lower edge-withthe edge of the metalfacing theouterf side portion thereof of the body below said offset and lying adjacent thereto.

In testimony whereof I aflix my signature in presence of two witnesses.

DUNCAN JJFAHL'MAN. Witnesses: I

LnwIsE. FLANDERs,

ARTHUR MINNIOK.

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