US2043419A - Carton blank - Google Patents

Description

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I June 9, 1936. J. E. ROBINSON CARTON BLANK Filed Sept. 2, 1953 Patented June 9, 1936 UNITED STATES PATENT OFFICE CARTON BLANK Application September 2, 1933, Serial No. 687,991

6 Claims.

This invention relates to cartons formed of corrugated board sheet material for use particularly in packing frame members such as window sashes, and to the method of forming such cartons from blanks of this material.

Window sashes are usually packed for shipment in bundles of six or eight lots, these bundles being face crated with lumber and cleated on all four vertical edges with two to four cleats. In such window crates there are never less than eighty nails used. In order for the merchant who buys these windows for re-selling purposes, to sell one window from the bundle, he must saw or break off with a hammer the crating, therefore leaving eighty nail holes in the windows which will have to be puttied by the painter before it is placed in a building.

Furthermore, with such .wooden crates the windows are exposed to accumulation of dirt and become shopworn and marred While awaiting sale. This problem is particularly acute because of the niunbcr of window sizes to be carried in stock, as several hundred sizes are made and are required to supply consumer demands.

Because of the great number of these window sizes, it has been impractical to carry a corresponding number of different sizes of carton blanks with which to form shipping packages. The necessity for such a variety of sizes is caused by the requirement that the blank must be scored .and cut at the lines along which it is to be folded to fit each separate size window sash.

With the blank of the present invention and the method of forming it around the stacked frames, nails and their attendant disadvantages are dispensed with. The time required to pack the stacked articles is shortened, commensurate with the elimination of the nailing operation.

Since the carton completely encloses the windows, they are protected against damage from soiling and accidental blows. While in stock, the windows may remain within the carton until sold and their depreciation because of shopwear is precluded.

In accordance with the provisions of this invention as to the manner of scoring the blanks, less than a score of different size blanks may be required to accommodate several hundred sizes of window frames. This constitutes not only a saving in the quantity of blanks required, but also facilitates selection of the proper size blank.

A further provision of the invention is the manner of slotting the blank at points where relative movement of the cut sides is to occur in forming the carton. The positioning of the slot is accurately determinable and uickly effected. This manner of slotting has the further advantage of resulting in a squarely formed carton which closely and neatly fits the enclosed frames.

Other advantages of the invention will appear 5 from the following description considered in connection with the accompanying drawing in which Figure 1 is a plan view of the prescored blank.

Fig. 2 is an elevation showing the manner of stacking frames on the blank. I 10 Fig. 3 is a plan of Fig. 2 showing, in addition, slots cut in the blank.

Fig. 4 is a perspective view showing the blank partially formed to indicate the order offold- Fig. 5 is a perspective of the finished carton showing an end partially cut out for the removal of a sash.

The frames ID are stacked at the center of the corrugated or fiber board l2 which is p ref- 20 erably of oblong form having at least one dimension equal to, or greater than, the peripheral distance of a vertical side of the stacked frames.

As shown, when Window frames are to be packed, they may be stacked in staggered relation in 25 order that the meeting rail having the inclined face I I may overhang.

To accommodate various widths of frames on the one blank, this blank may be provided with two sets of scorings, each adjacent and par '30 allel with opposite sides of the blank. Preferably these two sets of scorings, l3 and I4, extend lengthwise of the blank as this permits added use of the scorings in the folding process. Fig. 1 of the drawing illustrates the blank as pre- 35 pared and as it remains until used. It will be noted that it has only the lengthwise scorings and is without any cross scoring or slots. The slots are not cut until the blank is applied to an article, or articles, to be enclosed, as not until 40 then is the position of the slots determined.

As a provision of the invention, the interval between the scores of one set bears a fractional ratio to the interval between the scores of the other set of scorings. It is desirable, in this re- 45 spect, that the scores of each set be uniformly spaced and that the interval between the scores of one set be incommensurate with the interval between the scores of the other set, preferably in the ratio of 3 to 2. In the specific embodiment 50 of the invention shown, and by way of illustration, the scores of the set l3 may be one inch apart while the scores of the set M may be one and a half inches apart. It will thus be seen that various combinations of two of these scores of 55 opposite sets give widths of half inch increments, and that the number of sizes of frames which can be accommodated is the product of the number of scores in each set. Thus, with but a few scores in total, a comparatively greater number of frame sizes can be accommodated.

Having stacked the frames upon the blank in proper relation to an opposite set of scores, the slots l5 are cut from the margin of the blank to the corners of the frames. It will be noted that the edges l6 and ll of each slot converge inwardly and are joined at their inner end by a curved portion l8. Each slot is so cut that its inner end is located at an outer corner of the frames. The cut away part between the lines I6 and I! is of substantial width to facilitate shaping the carton and allow for slight irregularities.

The large end flaps 2| are turned against the ends of the stacked frames as shown in Fig. 4. Slots 22, corresponding to slots i5, are next cut so that the inner curved end 23 is at a corner of the upper face of the frames. The sides 2d of the slot converge inwardly as previously described.

The small side fiaps 20 are turned inwardly against the sides of the frames, the scoring facilitating this action. The flaps 25 are pressed downwardly against the top face of the frames and the flaps 26 are bent about the scoring at this point into engagement with the flaps 26. Thereupon the side flaps 49 are turned inwardly against the outer sides of the flaps 253 and 26, and the bands 21 are applied to secure the flaps in place. Conveniently, marks identifying the size and type of the contents may be applied to the carton, as shown at 28.

In opening the carton, the end flap may be out along its. bottom. and side edges as shown in Fig. 5, leaving the top edge intact to serve as a hinge. This flap in this manner serves as a closure member guarding the inside of the container against the entrance of foreign matter.

While the invention has been shown applied to the frame articles, it is apparent that it may be applied to any articles which are similar as to general shape, but which vary in size. When corrugated board is used for the blank, the scores preferably are at right angles to the corrugations. The scores may be slight indentations of one surface of the board without actually piercing the surface.

Since, at the outset, the carton blank'is free from any transverse slots and has only the longitudinal scorings, the frames may be placed on the blank at any lengthwise place approximately near the center, the selection of the proper pair of scorings being the only essential. This is because the transverse scores are cut as determined by the frames, and because the flaps 25 overlap. Care is therefore not required to accurately place the frames at the lengthwise center or in registration with any transverse markings.

I claim:

l. A carton blank of sheet material having parallel opposite sides and two sets of scores, each set being parallel with and spaced inwardly from said parallel sides of the blank, and each set comprising a plurality of spaced parallel scores, the interval between the scores of one set being an aliquant part of the interval between the scores of the other set.

2. An oblong carton blank of corrugated-board sheet material larger than the contents to be enclosed, said blank having two sets of scores, each set being parallel with and spaced inwardly from the long sides of the blank, and each set comprising a plurality of spaced parallel scores, the interval between the scores of one set and the interval between the scores of the other set being in the ratio of three to two.

3. A carton blank of sheet material having two sets of scorings, each set comprising a plurality of closely spaced parallel scores, and said sets of scorings being spaced apart and parallel to accommodate therebetween a. side of the article to be enclosed, and the interval between the scores of one set bearing a fractional ratio to the interval between the scores of the other set.

4. A carton blank of sheet material having two sets of scorings, each set comprising a plurality of closely spaced parallel scores, and said sets of scorings being spaced apart and parallel to accommodate therebetween a side of the article to be enclose-d, and the interval between the scores of one set being incommensurate with the interval of the other set.

5. A carton blank of sheet material having two sets of scorings, each set comprising a plurality of closely spaced parallel scores, and said sets of scorings being spaced apart and parallel to accommodate therebetween a side of the article to be inclosed, and the interval between the scores of one set and the interval between the scores of the other set being in the ratio of three to two.

6. A carton blank of sheet material for enclosing frame articles of the window sash type, having two sets of scorings, each set comprising a plurality of spaced parallel scores, said setsof scorings being spaced apart and parallel to accommodate therebetween a side of the article to be inclosed, and cut out portions of substantial width forming parallel slots extending from outer sides of the blank perpendicularly to the scorings, said slots meeting the scores at points corresponding to the corners of the frame articles,

the interval between the scores of one set being incommensurate with the interval between the scores of the other set, and the sides of each slot converging inwardly.

JAMES EDWARD ROBINSON.

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