US1997523A - Paper box or carton - Google Patents

Description

April 9, 1935. s. KATz PAPER'BOX OR CARTON l Filed Nov. 22, 1933 Patented Api-.9,1935 p f `1,997,523

` r 'Parannox on calrroN l Y samuerxm, New York, N. Y., assigaor ,mi Gi- ...fme e braltar Corrugated Paper Co. Inc. North` Bergen, N. J., a corporation of New Jersey Application November-22,1933, seriaiNotssazvz zclaims. `(ci. 229-34) 'I'his invention relates to improvements in rugations extend vertically in these parts when paper boxes or cartons, and has more particular the box is formed. g relation to boxes or cartons, of the so-called Each of the locking flaps I3 is formed on its knck-down type usually constructed of paperouter edge with two locking lugs I4. The ap I3 `5 board, either plain or corrugated. Y, is slightly less in width than the end I2 so that 5 The principal object of the invention is to form this nap may double down insidev of the sides I6 the body of the box or carton of cardboard so when the box is assembled and as shown in scored and constructed that when assembled,the Figure 1. l l parts will be automatically locked in position At the points marked 2 and3 the blankisscored 10 `against accidental'displacement, but at the same between each endl I2 and its companion locking 10 time, be capable of being knocked-down for ap, I3; the distance between the scores2and 3 Shipping. g egnalling the thickness of the end flaps II which A further object of theinvention is to provide extend between their respective ends I2 and the a boxor carton of corrugated paper capable of locking flaps I3 that double down inside of them being knocked-down for shipping and having when the sides of the box have been raised to posi- 15` its parts locked in position when assembled. tions at right angles to the bottom II. The end `Another object of the invention is to provide flaps I1 are connected to the sides I6 and are a box struck from a single jblank of corrugated scored asat 4 and 5 so that these end flaps may paper in which the boxmay be held in its asbe doubled inward along the scored lines. The

10 sembied condition by end naps which automatnaps n are s1ignt1y1ess in height than thesides 20 ically l'ock with slits formed in a portion of the I6 toallowaclear space I9 for accommodating the corrugated paper.` bend of the end apsIZ and I3 when the box is 'I'he invention also has other objects, all of assembled. which will be hereafter more particularly set Scored lines l are formed between each end UNITED i, STATES y PaJIFENTfol-FICE- forth and claimed. of the bottom and its end flap i2. The paper layer 25" In thedrawing forming part of the specica- 26 of the bottom is slit as at I5 at each end. This tion, i slit only extends through the Apaper 26 and a por- Figure 1 represents a perspective view of a box tion of the corrugated paper 20 so that when the embOdl/ing mynventiOn, the Same being partly locking nap -l3 is doubled over the flap I] and broken away to expose the interior and the cover 'forced into a vertical position as shown in Figure 30 and ends being shown in dotted lines. 1, the locking projections Il will depress the paper Figure 2 represents a detail vertical section `oi 26 against the yielding pressure of the corrugathe Same 0n the line 2-2`0f Figure 1. tions 20 until these lugs pass the` slits I5, when Figure 3 represents an end elevation broken the paper 26 will be again forced upward by the 35 away and showing the locking construction of spring ofthe corrugations 20 and lock the lugs 35 the end flaps, and l d firmly in position as shown in Figure 2. When Figure 4 represents a top plan view of one end locked in :this position the lower end of theI flap of the box blank, the opposite end being broken I3 and the lugs Il are held firmly in position as away. the forcing down ,of the paper 26 is against the 'J Describedin general terms, the. box, which is spring tension of the corrugations and thesecor- 40 formed from a single blank of corrugated paper, rugationsby their tendency to resume their norcomprises a bottom II, sides I6, end flaps I1, mal positions exert considerable friction onthe ends I2, locking flaps I3 and a cover 25. The lower end of the locking lugs I4 and as these lugs cover '2.5 may be of any ordinary construction cannot lmove upward and have a tendency to arranged to t over the box proper, andforms spring forward, the lips I3 are` locked rmly no part of the present invention. y Yagainst anyaccidentaldisplacement.

The paperk from which the box is constructed Thislocking effect is accomplished by pushing COmDIiSeS an inner layer 0f Papel' 26, an outer the flap along the upper surface of the paper 26 0 layer 21 and an intermediate corrugated or by employing force and until the lugsIl snap into 50 waved strip 20, as best shown in Figure 3. position as above described.

The corrugations 20 extend longitudinally of After being so locked in position the flaps I3 the bottom II for a purpose to be hereinafter decannot again be drawn forward into the box exscrlbed and as the ends I2 and the lockingflaps cept by employing some tool to depress the bot- I3 form an integral part or the bottom, the cortom and disengage the walls of the slots I5 from a It will be seen from the above that the body ofi?,

this box or carton is struck from a single piece of material and has great rigidity because of the corrugated construction and that theblanksmay be shipped in a flat condition in very small packages and may be instantly erected into rigidboxes' locked in the most positive manner in their assembled condition. Ordinary strainsI and packing of such boxes or cartons will have no eiIect on the structure of the boxes such as might disengage the locking' aps I3, as these aps, together with the aps I1 and the end l2, form a rigid unyielding structure in which the lugs I4 cannot be forced out of engagement with the walls ot the slits I5 except by deliberate intent.

What I claim is:

1. Ina collapsible box, the combinationwith a single paper blank having a bottom. section comprising a slit dat bottom layer and cox'npressible corrugations connected below the same, side sectionshaving naps at each end, endv sectionalocir-` ingr apsconnectedto the end sections and having locking projections that' engage the slits ixr the bottom and partly compress the corrugati'ons which're-act to hold the locking naps rmly in lockingvposition.

2. In a, couapsible box, me combination with' a single paper blank having. a bottomv section composed of flat top and bottomV layers spacedv and separated by wave-like corrugations, the top layer only having locking slits therein, side sectionshaving flaps at each end,v end sections and lock ing iiaps having locking tongues which engage the walls of the` slits in the bottom and partly compress the corrugations which re-act to hold the tongues ilrmly in locking positions.

SAMUEL KATZ.

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