Odi- 29, 1946- F. R. -EaUl-IRMASTER . 2,410,148 HEAVY DUTY PAPER SHIPPING CARTON HAVING- INTERLOCKING END CLOSURE ` Filed July'lß, 1944 ¿gli «a 2 ‘Sheets-Sheet Í1 HEAVY DUTY PAPER SHIPPING CARTON HAVING INTERLOCKIÑG vEND CLOSURE~ Filed JÀu‘ly l5, 1944 2 Sheets-Sheet 2. Patented Oct. 29, 1946 2,410,148 UNITED STATES Piri'lailsr'rv oiäriciz>` HEAVY-DUTY PAPER SHIPPING CARTON HAVING INTERLOCKING END CLOSURE. Frederick R. Buhrmaster, Webster Groves, YMo., ' assignor to Gaylord Container Corporation, St. , Louis, Mo., a corporation of Maryland ApplicationJuly13, 1944, Serial No. 544,685 1o claims'. (Cl. 229-47) 1 2 This invention relates to containers, particu larly heavy duty shipping cartons ofthe kind My invention isr shown embodied in a’ heavy duty shipping carton lof the type shown in Bea shown in Beaman Patent No. 2,214,220 dated Sep man Patent No. 2,214,220. The carton shown in tember 10, 1941 wherein the tubular body and Figs. 1 to 9, inclusive, includes' a tubular body A end closures of the carton have side ñaps- that and preformedslip covers or closures B for the are held in interlocking engagement by anex terior encircling band. The principal object of `th‘e present invention is to simplify rthe cover locking arrangement of such cartons and the-0D eration of attaching the cover to the body. The ends thereof, all made, of corrugated board, ñber board or other bendable material. The tubular body A is divided by longitudinalcreases or scores invention consists in a _carton khavingra tubular cured together, `preferably by staples 3. Each sidepanel 2 has ateach end thereof a projecting flap 4 adapted to befolded into proximity with l into side panels 2 and is made from a flat blank whose>l ends areV overlapped vand permanently se body with endl ñaps that are adapted to be folded against the outside face thereof and end closures with rim flaps that overlap the’folded body flaps the outside faceof said. panel, a score line 5 being and have rebent end portions that are disposed in endwise abutting relation to the'free ends <of provided tov facilitate folding of said iiap, Eachv end» 'closure Bis p_f- asliape corresponding saidA folded bodyflaps and thus prevent endwise to the shape'of the paneled body member A and has side marginalflaps _G corresponding in num inventiony also consists in the means for locking ber to the body flaps kl‘l.v AThe> side marginal flaps the rebent> end closure flaps in rim forming rela: 20 6 of the~v end» closure B are bent ‘along score lines tion; and it also consists'v in the carton closure 'l Y at right- angles` to the body.- `portion thereof and in the parts and combinations and arrange- ` and‘have extensions or continuationsßa- that are ments of parts hereinafter described and claimed. marked off by means of vwide scores or creases ‘la ' In the accompanying drawings, which- form and _folded or> rebent on their inner sides. The part of this specification, and wherein like sym bent. side-marginal flapsv 6 are permanently con removal'. of the end closures from said body. The nected 'together lin> end to end relation around the bols referto like parts Wherever they occur, y ' Fig. 1 is a side elevational view. of va shipping carton embodying my invention, 4 ` y. ,_ , ' periphery'of the end closure B1 toform a rigid l ' Fig. 2 is` anA enlarged partial’ verticalv sectional 30 Fig. 3 is a fragmentary end‘el'evational View of the carton, the carton beingshown partially 2', ' 4 i _ ` . relation.A _The; rebentsportionßa of the end clo Y 35 sure -ñaps >b. are .rigidly and Apermanently. secured thereto preferably by means. of Vstaples -9; »and _ Fig..4 is a fragmentary crosslv-sefcti'onal View on the line 4-4 in Fig. 2, ' ` n Fig. 5 is aside elevational ,view-showing'. the body and end closure beforeas'semblyî, Fig. 6 is a` vertical sectional view of said body , and end closure on tlfie'lii'ielì---lìv in Fig. 5', , ` , theser staples Nare llocated.between*the retaining ringv or hoop 8 and. thev4 free longitudinal:¿edges_ 'f of saidrebent portions offsaid end closure flaps 40 andv thusserve to retain said ring or hoop withinv the rim'portion Blof the end closureB. By the varrangement described, when the end ' Fig. 7 is an innerend View of saidvend closure, Fig. 8 is a plan View of the- cover-blank, Y Fig. 9 is laY partialelevation ofthe body blank, Fig'. 10 is apartial side. elevational View> of a ‘V shipping container provided.` with an end closure of modified form, . . y , 45 ' locked position; ' and are bent. inwardly. .bythe rim" B1 of said closure causes. the rebent portions or extensions 6a of the I Fig. 12.is a view simiiartor‘ig. 11, showing the ' positions of the cooperating ‘lend c1osure and body tabs before said tabs are drawn,y inwardly, into closure B is forced over the end-ofthe Ybody A, ' the outstanding flaps 4 onsaid. endr of said body ^ ‘ againstfthe outsideface of said body. Contin ued yendwise movement of: the. Íendfclosure" B . . Fig. 11 is an enlarged fragmentary vertical secl-` tional view on the'line lI-H in Fig. 10, closedcircular‘band- or hoopïßv of metaly or other l suitablek material -,which liesj within the folded portions 6a yof» saidiìaps and extends from one flap> to> another and holdsv'them in rim forming in horizontal cross-section on the line :3-3 in Fig. rimv B1 therefor'.> The connecting means. for‘the bent ,rim >forming flapsv (iv preferably comprises a 50 « Fig. 13 is a piany view of the..mooiiiéd.er_iq¢1o.. f rimforming flaps -6 thereof to ride over the foldedv body flaps ¿l> Whichyieldinwardly with ’said body and then spring outwardly across the ends of ' said rebent portions of. saidrim forming ñaps. By this 4iarrangement, the internal’¿ shoulder vIl' sure, the.y flaps thereof >in the position >'shown in 55 formed'in tl'ie-rim'lâl> ofthe endv closure B by the Fig. 12`. rebent portionsz‘ßa »of the rim vforming~ñaps>n6 2,410,148 È formed on the body A by the folded end flaps 4 thereof, thus permanently locking said end clo 3. A carton comprising a tubular body and a closure for an open end thereof, said body hav sure to said body. The hereinbefore described construction has ing> an external peripheral shoulder ,thereon adja several important advantages.4 „It _is simplenand cent to said end thereof, and said closure having a rim portion that' surrounds said end of said body economicalnand permits the end closure B ofthe carton to be quickly and easily mounted on and securely locked to the body A. land has an internal shoulder disposed in abutting relation to the external shoulder thereof, said rim The continuous hoop or band 8 in the rim B1 of the end closure B serves to rigidly hold the bent' flaps 6a of said end closure in end to end rim forming relation, whereby said rim is rigid enough to force the side panels 2 and the end flaps 4 thereof inwardly when said end closure is telescoped over the end of said body and to prevent lateral disengagement of the abutting shoulders l l and l2 after-,said side' 4 ternal shoulder, and a band infolded Within said folded portions of said bent closure flaps for holding them in such rim forming relation. thereof abuts against the external shoulder l2 portion of said closure comprising a. plurality of side marginal flaps on said closure bent into _end to end rim forming relation and thence rebent on their inner sides to form said internal shoulder, a band infolded vwithin said 'rebent portions of said closure flaps for holding them in such rim form - ing relation, and .means for securing said rebent portions directly to said closure flaps and for retaining -said band therein, fl. A carton comprising a tubular body and a In the modified form‘of end closure shown in a; slipfclosure for an open end thereof, said body Figs. 4»10 to 13, inclusiveßth'e band'for holding the panel flaps snap over the rebent portions 6a _of said end closure flaps. side marginal flaps E of the >end closure B in rim forming relation isin the formof a wire-8a. that islocated in the folded portions lia of said flaps having anexternal peripheral shoulder thereon adjacent to said end thereof, and said closure having' a rim portion with an internal shoulder with' its utwo ends extending ‘outwardly through f adapted to ride over and seatback of said ex notches I3 provided therefor in the meeting ends lofïtwo adjacent flaps. lWith -this form of retain ternalshoulder when 'said closure is slipped over ing band, the end closure B is placed over the end of the body A with the free longitudinal‘e'dges III of the rebent portions Goof-the -inclined end closure flaps G inedgewise abutting'relation to the free ends l2 of theA inclined bodyflaps 4, after which the Wire 8a is tightened to swing the en gaged end closure and body flaps inwardly along side of the body panels 2. AThe cooperating flaps are then securely locked in'such position by twist ingn together theY exposed-ends =8b of the wire 8a. By ¿this arrangement,the end'closure is locked tightlyto Vth‘e'body but may be quickly and easily removed therefrom by cutting -the locking Wire 8a or »untwisting the exposed-twisted ends 8b thereof. `Obvio'usly,ftlie’>V hereinbefore described carton construction admits >of considerable modification without departing' from the invention. There-l fore", I do not wish to be limited to the precise ar rangements nshown and described., "Whätïclaimis: " ‘ ' _ ' 1.'A~carton comprising a tubular body and a closure-forfanfopen *end thereof, said body; hav ing 'anvr external peripheral` shoulder thereon" ad- l jacent to said jend thereof, and said Yclosure hav ing arim portion that-surrounds said end of said body andîh'as an yinternalshoulder',,disposed in abuttingrelation to the externaï'shoulder'ïthere of, said rirnl portion ‘of Vsaid/,closure comprising a said end of said body, said rim portion Vof said clo sure comprising a plurality of side marginal flaps on said closure bent into rimforming relation and having portions folded vupon and- secured directly to the inner sides of said' bent flaps to form -said Ainternal shoulder, and vmeans located within said folded portions of said bent closure flaps without being ldirectly secured thereto for permanently holding them in suchjrim forming relation. ' ' ' ' > >5. A carton comprising a tubular body and a s1ip_closure"for an open .end thereofysaid body having anv externalperipheral'shoulder thereon adjacent tov saidend thereof, and said closure having a `rim portion with aninternal‘ shoulder adapted Yto rideover andV seat back of said exter nal shoulder when said closure is slipped over said end_of said body, said rim portion of said clos-ure comprising >a plurality of side marginal flaps` onsaid closure bent into rim forming rela tion and having portions folded upon and secured directly to the inner‘sides of >said bent flaps to forrn'said‘V internal' shoulder, -„and arclosed band infoldeduinl the folded Iportions ofrall of' thev bent iiaps fof" said I_closure4 for permanently Yholding them rim'forming relation. b' _ > “6; Acarton comprising a tubular body anda y closure for an open end thereof, said body hav ing an‘e'xt'ernal peripheral shoulder thereon'ad jacent to said end thereof, and lsaid closure hav plurality of side marginal fiiaps on'rs'aid closure bent into riml forming> relation and having por ing a‘rim-portion‘thatsurroundsisaid end of said forming relation. _l their innery sides toform saidf internal shoulder, tions folded upon and'lsecured‘directly to thein body and has-¿fan i'n-t_er;'r_lalï"shoulderV disposed in abutting relation to thefexternal shoulder thereof, ner sides'of‘said bentV flaps to form said internal shoulder, and means inclósed'within the folded GG said rim-portion of saidclosure comprising a plu ralitybfïside marginal'flapson said closure bent portions of said bent flaps without being directly into rim-*forming relation and thence rebent on secured; thereto 'for` holdingr them in ¿such rib ` ‘ - '_ i v-2; A carton comprising'a~ tubulanboldy and a closurefor `an open end thereof, >said’body hav ing'an external peripheral "shoulder-- thereon ad jacent to said end `thereof;and's'aidclosurehav- f ing a rim `portion that‘surrounds "said e'rfldv ofgsaid bodyA and hasn'anLinternal shoulder disposed;- in abutting 'relation to the* external shoulderl there of, said rim portion _of said _closure comprising a plurality >of side]rriargir'iall flaps onY said ‘closure bent into 'rim' forming relation i and having " por-A tions folded uponj Yand' Ísecured-idirectly tof ,the inner sides of >said bent flaps-‘to'form said vin" a bandV locatedlwithin saidrebfent'- portions of said closure ñaps for holding'them togetherÍin such rim forming relation, and `means forfsecuringl said rebentvportions',directly VtoÁsaid closure flaps between the `ends thereof Yand said band, said band comprising a> wirehaving its ends extend ing outwardlyl between two'adjacent closure flaps and secured’t'ogeth'er. f‘ _ ' '7, A carton comprising“ atubular body and a slip closure forA 1an"A open~ end> thereof, said body l having a'plurality of flaps at said end-adapted-to fold against the outer side Aface thereof toï'fo‘rm‘ 2,410,148 5 6 an external peripheral shoulder thereon, and said comprising a wire having its ends extending out wardly between two adjacent closure naps and end closure having a rim portion that surrounds , said bent body flaps and an internal shoulder dis posed in abutting relation to said external shoul der, said rim portion of said closure comprising a plurality of side marginal flaps on said closure bent into rim forming relation and thence rebent to form said internal shoulder, means for se curing said rebent portions directly to said flaps, and a continuous band inclosed within the rebent portions of said flaps for holding thern in such rim forming relation. 8. A carton comprising a tubular body and a slip closure for an open end thereof, said body having a plurality of flaps at said end adapted to fold against the outer side face thereof to form an external peripheral shoulder thereon, and said end closure having a rim portion that sur~ rounds said bent body ñaps and has an internal shoulder disposed in abutting relation to said ex ternal shoulder, said rim portion of said closure comprising a plurality of side marginal flaps on detachably secured together. 9. A carton closure having a rim portion with an internal peripheral shoulder, said rim portion comprising a plurality of side marginal flaps on said closure bent into rim forming relation and thence rebent on their inner sides and rigidly se cured directly thereto to form said internal shoulder, and means inclosed within the rebent portions of said ñaps for holding them together in such rim forming relation. 10. A carton closure having a rim portion with an internal peripheral shoulder, said rim portion comprising a plurality of side marginal flaps on said closure bent into rim forming relation and thence rebent on their inner sides and rigidly secured directly thereto to forrn said internal shoulder, and a band located within the rebent portions of said flaps for holding them together in such rim forming relation, said band compris ing a wire having its ends extending outwardly said closure bent into rim forming relation and thence rebent to form said internal shoulder, means for securing said rebent portions directly between two adjacent flaps, whereby said naps are adapted to be drawn into rim forming relations by to said iiaps, and a continuous band inclosed by securing together the ends of the tightened within the rebent portions of said ilaps for hold wire. ing them in such rim forming relation, said band tightening said wire and locked in such relation FREDERICK R. BUHRMASTER.