USRE7488E - Improvement in paper boxes - Google Patents

Description

H. R. HE YL. Assignor to AMERICAN PAPER-BOX MACHINE c0.

, PAPER-BOXES. No 7, 488.

Reissued Feb. 6, 18 77. FIG. 1 5

INVENTORI .the endb.

UNITED STATES HENRY. R. HEYL, OF PHILADELPHIA, PA., ASSIGNOR TO COMPANY, OF SAME PLACE.

PAPER BOX MACHINE THE AMERICAN IMPROVEMENT m PAPER BOXES.

Specifioatiouforining pert of-Letters-Pstent N 0. 152,636, dated June 30, 1874; reissue No. 7 ,488, dated February 6, 1877 application filed September 21, 1874.

To all whom it may concern:

Beit known that I, HENRY R. ELEYL, of the city and county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement inthe Manufacture of which the following is a of Paper Boxes, specification My invention consists in making paper boxes of tubular form, with one or both ends constructed with closing flaps, to fold oneupon another, the outer or last-folded flapbeing held down by its two. loose corners .entering slots or openings in the flap below.

The chief object of this invention is to provlde paper boxes complete in one piece of paper or pasteboard, which shall be capable of being quickly closed and securely fastened shut without the aid of tying-cord or cement.

In the accompanying drawings, Figure l is a plan of a box-blank, shaped, slit, and kerfed In readiness for folding. Fig. 2 is a transverse section on the line 2 2, Fig. 1. Fig. 3 is a perspective view of the same folded in tubular form, preparatory to the closing of Fig. 4 is a perspective view of the same, with the ends partially closed. Fig. 5 1s a perspective view of the closed box or package.

The blank for my box is made, preferably, of two united thicknesses of material, and shaped essentially as illustrated in Fig. 1, the proportions being varied according to the size and shape of the box desired.

-On the side of the blank which is to form the inside of the box, I make excavated kerfs K of shallow depth and extreme width on the lines of the desired folds, so that whilethe box is not materially weakened thereby, I am still enabled to bend very heavy box-pasteboard entirely double without cracking or otherwise injuring the outer face of the box at itscorners.

The blank is then formed into an angular tube by securing the side F to the narrow flap G; and I prefer to secure the joint by seaming it with wire staples instead of using cement.

Each extremity of the tube thus formed will- .be seen to consist of separated flaps A A B 0,

equal in number to the sides of the tube. In

this illustration of a rectangular tube or box,

A A represent the first-closed or inner flaps; B, the third flap, provided with the slits 'o'r openings D D, cut at an angle to the fold or hinge of said flaps, to receive the corners E E of the fourth or outer flap, C.

In closing the flaps in the order heretofore "described, the two corners E E of the outer flap are introduced into the slits D D, which secures all the flaps from opening.

By thus confining the corners-of the outer flap it is held down closely and securely, and is much less liable to be opened in handling the box than when the flap is held by one or more tongues inserted in a slit or slits parallel with the fold or hinge of the said flap.

As a still more efl'ective means of securing the flaps against accidental opening, I have made notches I I, one at either side of the outer flap and near the corners E E, so as to impart to these corners the form of tongues; and, by making the slits D D in a direction lateral to the fold or hinge of the last-closed flap, these tongue-shaped 'corners may be inserted in.the slits or slots laterally. This is done by bending the flap, so as to shorten its free end; then the tongues may be entered into the slots, and, by letting the flap straighten, the tongues enter deeper into the slots and elfectually lock the flaps together, so that no pressure from within the box can open them.

Having thus described my-iuvention, the following is what I claim as new, and desire to secure by Letters Patent:

1. A paper box formed from the within-described pasteboard blank, constructed with the four sides R R R R, the lap G, and four closing end flaps, A AB C, at either end, and with excavated kerfs on all the lines forming the inner angles of the box, substantially as described.

2. The within-described paper box having four closing end flaps, A A B G, at either end, which are so constructed that two of said end flaps do interlock with each other by the introduction of the two corners of one of the flaps into two' slits or openings, D D, formed in the opposite flap, said openings being made at an angle to the fold or'hinge of said flap, substantially as described. 7

a I Less 3. A paper or pasteboard box secured in a at either end flaps A A B G and fastening. tubular form, and closed at one or both ends slits D, and secured in tubular form by a seam by portions of the sides thereof bent over and of wire staples, S, applied substantially as set locked into each other by means of the tongueforth.

shaped corners E E being sprung laterally into the corresponding slots or long openings.D D I HENRY HEYL' made in the o 'iposi eflap, lateral to the folll Witnesses: or hinge thereof, substantially as described. 7 v A. H. EVERBARD,

4. A box constructed from a blank having HUGO BBEKMER.

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