US1502017A - Reenforcing corners for boxes - Google Patents

Description

Jul 22 1924. 1,502,017 1 R. C. CARLSON REENFORCING CORNERS FOR BOXES Filed Sept. 18 1922 Patented July 22, 1924.

- UNIT ROBERT o. canteen, orcH IcAeo, I LInoIs.

REENFO RGING CORNERS FOR BOXES.

Application filed September 18,1922. Se-rial No. 588,777.

To all whom it may concern:

Be it known that I, Ronnnr C. CAnLsoN, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Reenforcing Corners for Boxes, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to reenforcing cor- 11ers for boxes. Boxes or cartons made of corrugated board or other forms of fibre are ordinarily made of one piece of board which is scored and folded, certain edges being brought together and secured to one another to complete the enclosure, The meetin edges are frequently united by means of fabric glued to the. surface of the board and overlapping the joint between the edges. Boxes thus constructed are weakest at the corners, there being a tendency for the corrugated board or fibre to tear along the scores and folds and along the united edges of the material. My invention relates to a reenforcing fabric having a U-shaped slot cut in it in a direction bias to the fabric threads, the fabric being preferably gummed on one side for ready application to the box corners. The invention also embraces a fibre box having reenforcing corners of the type described applied thereto. My invention is illustrated in the accompanying drawing, in which Figure l is an isomet-rica-l drawing of a fibre box having all of its corners protected with bias reenforcing fabric;

Figure 2 illustrates the application of the fabric to a box cover corner; and

Figure 3 illustrates the fabric as it is ordinarily applied to the fibre before the latter is shaped into a container.

The reenforcing fabric shown at 4 is provided with a slot 5 cut on the bias to the threads generally illustrated by the diagonal cross lines. The reenforcing member is preferably cut round, though this feature relates only to the appearance and it is ob- ViOllS that other shapes may be used without affecting the utility of the invention.

Although it is obvious that the reenforcing members may be applied to the boxes in various ways, I have found it preferable to apply gum to one side of the reenforcing fabric so that it may be attached to the box merely. by wetting. It is to be understood that the reenforcements may be applied either after the box has been completely formed or may be applied by the manufacturer who ordinarily sells the box in knockdown or flat condition.

Although I have described the reenforcing members as being made of material cut on thebias, it is also possible to construct these reenforcing devices of material which has no distinct weave, but which resists tear in at least one direction. lVhen material of this kind is used, the U-shaped cut is made in the material in the same general direction as that in which the material resists tear.

Although I have shown and described my invention as applied to boxes, it is to be understood that it may be applied to any form of device having folds or corners which are improved by reenfo-rcin g.

1 claim:

1. In combination with a box having a rectangular corner formed by side walls and superposed flaps, a corner reenforcing member of textile fabric having an open ended slot and adhering to the side walls and flaps, those portions of the reenforcing member adjacent the open end of said slot adhering to the flaps and lying in superposed relation, said reenforcing member being folded. over the side wall junction and the junctions between the side walls andflaps along lines substantially at 45 to both the warp and the weft of the fabric, whereby said warp and weft strands substantially equally re sist disruption of the reenforcing member formed from a sheet folded along two lines at right angles, said sheet being cut along one of said folds outwardly from the intersection of said folds, the two quarters thus formed adjacent said out being foldedinto mutually superimposed relation when the box is completely formed, of a fabric reingvto the superimposed lateral edge of the 10 enforcing member adhering to said corner, cut in said sheet for protecting and reenforcsaid reenforcing member having a slot cut lng thelatter edge.

from substantially the intersection of said In Witness whereof, I hereunto subscribe folds, said slot extending at SIlOl'L an angle my name this 13th day of September, 1922.

to the Weave of said iabric that tearing: ROBERT C. CARLSON. strains along said folds are borne substanlVitnes'ses: tially equally by the warp and- Weft of said EDNA V. GUsTAFSON,

fabric, one lateral edge of said slot extend DAGMAR PETERSON.

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