US1944017A - Nestless can lid - Google Patents

Description

Jan. 16, 1934. s wA' D NESTLESS CAN LID Filed June 5, 1951 S R Y E m m E 0 v T E T [IL A 5 9 un B Georg Patented Jan. 16, 1934 ATES PATENT OFFlCE 4 Claims.

My invention relates to cans and particularly to the provision of friction closures for cans provided with means for preventing same from nesting or sticking together.

When such closures nest and stick together, as in a feed hopper, it interferes with rapid feeding thereof either automatically or by hand, as the sticking lids or covers have to be pried apart before feeding can proceed.

According to my invention, a stop member or members is provided to project interiorly of the upstanding flange of the can lid or cover near the mouth or open end thereof, whereby entrance of the bottom of one lidor cover into the top of another is limited to prevent the former from lodging or sticking in the latter.

A preferred embodiment is shown in the accompanying drawing showing a fragmentary vertical section of a can with its lid or cover in 20 place thereon, the thickness of the sheet metal being magnified for convenience of illustration.

The substantially cylindrical can body shown terminates in an outwardly rolled marginal curl 12 and the, preferably vertically, upstanding flange 14 of the friction lid or closure 16 shown terminates in a similar outwardly rolled marginal curl 18, which acts as a stop to limit the extent to which the lid can be forced into the body where it fits snugly and is frictionally held in place.

Reference character 20 indicates the inwardly projecting stop means here shown as a bead formed from the sheet metal of the substantially vertically upstanding lid flange l4 and which may be continuous or discontinuous as desired. Bead 20 is located in the open mouth of the lid flange 14 immediately inside the curled part or margin 18 and does not interfere with the lid forming an effective closure when inserted in the can body. When one lid is brought into such relation to another lid as would normally result in its nesting or sticking therein if stop member 20 were absent, it is stopped at the upper side of bead 20 and the bottom of the next lid prevented from entering far enough in the recess 22 to produce nesting and sticking, and the lids can be fed rapidly in a closing or sealing machine which need not be held up and the output diminished by sticking can lids having to be pried apart or getting jammed in the machinery.

Modifications which may be resorted to within the scope of my claims are included within my invention.

1 claim:

1. An insert friction closure for a can body comprising a disk portion and a side wall flanged portion extending at approximately a right angle from the disk portion and forming a practically straight sided recess in the closure over the disk portion having a mouth of a size into which other like closures, unless prevented, could enter and nest and stick, means about the outer margin of the side wall flange for limiting the insertion of the closure within a can body mouth, and means extending inwardly from the side walls of the closure remote from the closure disk portion for limiting entrance and preventing sticking of other like closures therein.

2. Device according to claim 1 in which the means for limiting insertion of closure into body is an outward curl of the side wall flange edge.

3. Device according to claim 1 in which the inwardly extending means is a bead formation of the closure side wall material.

4. Device according to claim 1 in which the means for limiting insertion of closure into body is an outward curl of the side wall flange edge, and the inwardly extending means is a bead formation of the closure side wall material.

GEORGE E. STEWARD.

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