US1002546A

US1002546A - Sheet-metal can.

Info

Publication number: US1002546A
Application number: US57790410A
Authority: US
Inventors: Frederick Westerbeck
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-08-19
Filing date: 1910-08-19
Publication date: 1911-09-05
Anticipated expiration: 1928-09-05

Description

F. WESTERBEGK.

SHEET METAL CAN. APPLIQATION IILED'AUG. 19, 1910.

1,002,546. Patented Sept. 5,1911.

' Abbast knvanhov: mg-mqgwl F. Washerback 1 7?, kw $47M forming My mvention relates to a sheet metal can,

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FREDERICK TESTER/BECK, OF ST. LOUIS, MISSOURI.

SHEET-METAL CAN.

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Specification of Letters Patent.

Patented Sept. 5, 1911.

Application filed August 19, 1916. Serial No. 577,904.

To all whom it may concern:

Be it known that I, FREDERICK 'WEs'rnR- BECK, a citizen of the United States of America, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Sheet-- Metal Cans, of which the following is a full, clear, and eract description, reference being had to the accompanying drawings,

part of thisspecification.

and it has for its object the provision in a can of this description of a closure that may be quickly applied to a can body by pressing tion closures of this kind founded on the fact that the closures not infrequently become dislodged from their seats by reason of jars'to which the cans are subjected, such as those resultant from shockto the cans when theyare dropped from any appreciable height, as, for instance, in setting them down suddenlyon a solid object, or sudden deposit ofshipping cases containing the cans.

My improvement contemplates a can closure that may be termed a friction closure, and which by reason of its structure and the structure of the can body is caused to be permanently locked to the can body when it is introduced therein-to, thereby eliminating all possibility of dislodgment of the closure, either accidentally or otherwise, and necessitating destruction of the closure when it is desired to gain access to the contents of the can.

' Figure I is a top plan view of a can provided with my improved closure. Fig. II is an enlarged vertical section, showing .thc closure and a portion of the can. F ig.

III is, a view similar to Fig. II showing the closure permanently locked in the can.

In the accompanying drawings: 1 designates the body of my opening '2 around which is an annular re- 'flange '7, (see Fig. II),

can provided with an cess or depression 3. The recess 3 is located between a closure receiving neck 4 curved inwardly and downwardly at its upper end within which the opening 2 is present, and an outer Wall 8 concentric with said neck and connected thereto by a web at the-bottom of the recess. The rec'ess 3 is adapted to re ceive' certain parts of the closure of the can for the purpose of so locating such parts as to prevent access thereto that would make it possible to secure the engagemcnt'of' any instrument with the closure for the purpose of extracting it from the can body.

y can closure is in the nature of a cap comprising a central web 5 surrounded by pan upwardly extending head 6 and a depending annular skirt 7', the outer face of said skirt being uninterrupted by any unevenness that would permit of the 'placing thereagainst of an implement for the pur pose of separating the closure from the can body. The bead 6 conforms to the shapc'of and closely fits the upper'end of the closure receiving neck at and it is adapted to seat upon the upper end of said neck when the closure is properly fitted to the can. The

"skirt of the closure closely fits the neck a and terminates. in an outwardly flaring which is slightly wider than the width of the closure receiving neck 4 and the outer wall 8 of the recess 3, and the length of the skirt 7 with its flaring flange '7 is greater than the depth of the recess 3. It,sl1ould be noted, however, that inasmuch as the flange 7 is of-flaring shape when originally produced, it is capable of passing freely into the recess 3 when the closure is applied to the can body. Between the skirt 7. and the flaring flange 7 is a folding crease.

In applying my closure to the can, the flaring flange 7 of the closure is introduced into the recess 3 and lowered, together with the skirt carrying it, into said recess until the recess. Continued downward movement of the closure then causes the flaring flange 7 to be bent on its folding crease outwardly so that it will approach a position parallel tothe web at the bottom of the recess and the free edge ofithe flaring flange will move toward the outer wall 8 of the recess while the skirt of the closure moves downwardly parallel with the closure receiving neck 4:. The movement of the closure is continued ,until the flaring flange 7 is parallel with the space between 10c the flange touches the web at the bottom of v the bottom oftlieficess and t a right angle,- or substantially a right angle, to the neck 4 and the flaring flange is securely wedged in the recess 3 at or adjacent to its bottom.

The flaring flange of the closure is, therefore, so positioned as to be firmly locked to the 'can body and so located as to be inaccessible to any implement that may be used for'the purpose of extracting the closure. Inasmuch as the. exposed portions of the closure are of plain external contour, there is no opportunity for such engagement of the closure as Would be necessary to extract it and gain access to the contents of the can, and it would be absolutely necessary to either cut the closure or, the body of the can,

thus rendering the can unfit for re-use, as ishighly desirable, to prevent commercial reuse of the can.

I claim: The combination with a sheet metal can body, provided with a neck and an outer wall surrounding said neck, connected by-a bottom web and producing an annular recess within the body around said neck; of a closure havin an annular closely fitting skirt. provided with a flaring flange of slightly greater width than the normal width of the annular recess and a folding crease between the skirt and the flaring flange, the combined length of the closely fitting skirt and its flaring flange being greater, than the depth of said annular reces's,whereby when the closure is applied to the can body the flaring flange of the closely fitting skirt is caused to ride outwardly upon said bottom web and to abut edgewise-