US 2459073 A
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Description (OCR text may contain errors)
Jan. 11, 1949. K. c. HAMILTON 2,459,073
I PAPER CUP HAVING A PQURING' LIP EXTENDING OUTWARDLY FROM SIDEWALL Filed Nov. 4, 1944 I N V EN TOR. KEN/M5799 6. HAM/170A! W @44 kW- L ATTORNEY p v Fig. 4 is a seoondrembodiment ofthe-invention .on the plane of line VII VIof Fig. 4;
one piece type of cup in which thefside wall thereof is pleated;.
the line lip-Ix; of. Fig.7;
Patented Jan. 11,}1949 l n i 'iJNlT'ED PABERCUP-ILAYING A -yams .Q TW DI Y m liennei G ieniil-ien waukee X to M e L wi q o Application: Nouember 4, 13.411, Serial No. 561-3903 h i v t on relatesto im rovements i s r @HQ PJiI sseise la s tainers made .of fibrous grnaterialisuch ginspaper, and particularly topaper. cups .forrned wit a lip =01: spout for pouring ,liquids or cornminutegl solids therefrom. 1
.It is therefore o113:',0bject of;.,the P13 51 11}; in-' vent to provide aco taia n-made 1. al, suc s r; W chi formed wit a p lip or spout in the side wall of the cont Another object of the invention is to a a er. cup havin a e de im wit apm m lipfo rmed in the-side wall of the cup in such manner as to secure a plurality of. thicknesses of material in the lip portionpf the bead.-
. o e object ofl h inv tion i ospnovide gil th e mqss. avinai he e m... 2% cup, as is Well kno a paper cup with a pouring lip, the cu ng p t so formed as to provide a plurality of thicknesses t5 cn tinaofj he of material at least in the portions of the cup 1: 1 line side Wall forming .thelip. Another-object of the inventionis to; provide a paper cup with a pouring lip formed the a N V H p fer ly as the 1 t p o the ormin qutwaridlv e pe h. mammotprocess, n er l by utilizing e o i n tionve e h side iin u h m nner..as-..ip de: of known cup-forming machines for pressing the f ne pap in coniu ction with'th :co tinuation ps i e p t us o i e; -tnict m wh h Qf isllcheeerz ph nn w ch \i s bstantia y-tin will serve a multiplicity of purposes without nae terially increasing the 100st thefieof and, with retention of all of the prior vadvantages tlnareof such as nesting forvshipping, and all oi thepripr usesvof th p n qO iect a van ages othe tha t e above set forthwill; .be, apparentirom the: follovy insde wh n readc nco fltion w m t e accompanyingdrawing; in which: I Fig. 1 is :a side elevationtofone ernbodimentvof the present invention in a two piece eupu vvith a single thielzness jointed side. wall;
Fig. 2 is a vertical cross section taken on the plane of the line IIII of Fig 1;
Fig.3 isa horizontalcross sectional viewtaken on the plane of t e line III-III of Fig; 1-;
tending or for n v atl hi flhzlie .fiat Eagainst eaeh t stil ield 1 oi me mmlip nd the shown in side elevation and illustrating; aone pieceocup having, the side wall. thereof.- formed as box plaits;
Fig. 5 is a vertical cross section takenlonthe planezof the line .V-V of Fig. 4;
Fig. 6 isa horizontal cross-sectional view: taken psef t 0113 ein .h irb reely rath r than; ad eringeto Fig. '7 is a side elevational view of :a; third embodiment of the present invention showing a lpreiel ahly butnqt neo- -p riions1 fith sidewal .c le daesro henwa'll are Fig. 8 is a vertical cross sectional view taken secured in liquid-tight, overlapping Fig, 9 is a. horizontal sectional view tagken on Referring to the drawing byreferenee; numerp qdim'double'la rs lationi :to
the lip portions I5 and I5 of the bead are formed with four layers 20, 2|, 22, and 23, which accordingly increase the resistance of the lip to deformation.
In the second embodiment of the invention 11- lustrated in Figs. 4, 5, and 6, a cup of the boxplait type and of frusto-conical form is shown in which the side wall of the cup, generally designated at 21, and the bottom of the cup 28-are formed from a single piece of material. The separate plaits in the side wall are formed by folding the material back on itself, so that each plait has two portions 30 and 3| with triple wall thicknesses 32, 33, and 34, and the two triple thickness wall portions are spaced from each other by a single thickness wall portion 35. The several pleats are also spaced from each other by a single wall thickness, indicated at 36. The upperedge of the cup side wall 21 is folded or rolled outwardly to form a multiple thickness and'generally cylindrical bead, designated 31, to strengthen the cup against distortion and to turn the edge of the material out of possible contact with the lips of the user.
. Cup 27, 28 is formed with a pouring lip, gen- 1 erally designated 38, and formed from or in the cup side wall 2'! and extending laterally therefrom. The-lip 38 is again formed to define a space which is substantially triangular in cross sectional area and which extends from adjacent the bottom 28 of the cup through the bead 31 and increases in size from a point adjacent the bottom of the cup to the upper edge of the bead portions 39 and 40 forming the edge of the lip. The bead portions 39 and 40 are flattened and are formed by double the thickness of each of the plait wall portions 30 and 3|, thus providing six thicknesses of material for each side of the lipbead portions. It will be seen that the apex of the triangular lip space falls between two of the multiple thickness plait portions, thus utilizing either the single thickness plait wall 35, 'and'hence only a double thickness head portion, or the single thickness 36 ,of the cup wall, to
form the apex of the pouring lip.
The third embodiment of the invention shown in Figs. 7, 8 and 9 involvesthe use of a cup of the "pleated type formed from a single piece of material providing a side wall, generally designated 45, and a bottom 46 integral therewith, I
the cup being again substantially frusto-conical in shape. The side walls are formed with pleats, generally designated 41, and formed by folding the-material on itself to provide three thicknesses of material 48, 49, and 50 extending from practically a point adjacent the cup bottom 46 and increasing in width taken in a horizontal direction toward the upper edge of the cup side wall. The pleats are spaced from each other by single thickness side wall portions 51 and 52 of substantial width 'atthe bottom of the cup and becoming narrower as the upper edge of the cup :is approached. The pleats '41 are of such width at the upper edge of the cup as to be in edge-toedge relation, or even in overlapping relation, and
are folded or rolled outwardly to form a bead, generally designated 55, which is substantially of triple thicknesses of material throughout its entire periphery.
45 to define a substantially triangular space --varying in size from practically a point adjacent the bottom 46 of the cup to a substantial size at the bead 55. The bead portions 5'! and 58, forming the edge or rim of the lip, are again flattened. Due to the pleated construction of the cup side wall, the apex of the bead falls on one of the single thickness wall portions 50, and one of the pleats 41 falls on each of the sides of the lip so at least a portion of the lip head is formed by double the three thicknesses of the pleats themselves which provides a rim of substantial rigidity.
In manufacturing the cups, the lips are preferably formed by a pressing operation as the last step in manufacture before the cups are placed in shipping packages in nested relation. If it is desired to have the lip of the first embodiment of the invention fall on "the overlapping portions ofthe cup side wall, it is necessary to place the cups in a predetermined position in the dies either by the use of an indexing device, such as is well known, or by manual positioning of the cups. Such placement, however, is not necessary with the second or third embodiment of the invention to secure the construction of lip described.
Although but a few embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.
1. In a container made of fibrous material and having a bottom and a substantially conical side wall, a lip formed in the container side wall and extending therefrom for pouring the container contents therefrom, the lip extending from substantially the bottom of the container through the rim thereof and defining a space substantially triangular in cross sectional area in conjunction with the continuation of the line of the container side wall, the space increasing in area from the end of the lip adjacent the container bottom to the rim of the container.
2. In a container made of fibrous material and having bottom and sidewall portions with the edge of the side wall portion formed as a substantially cylindrical bead, a pouring lip formed in the container side wall and extending laterally therefrom, the lip portion of the bead being flattened.
3. In a container made of fibrous material and having bottom and side wall portions with the edge of the side wall portion rolled back on itself to form a substantially cylindrical bead, a pouring lip formed in the container side wall and extending therefrom, the lip portions of the bead being flattened to provide a plurality of thicknesses of material extending adjacent each other.
4. In a container made of fibrous material and self to form a substantially cylindrical bead, a
pouring lip formed in the container side wall and extending therefrom, the lip portions of the bead 'being flattened to provide a plurality of thicknesses of material extending in spaced relation 'toand adjacent the side wall. 5. A paper cup having a unitary side wall formed as box plaits, the plaits having portions of multiple thickness spaced by a portion of single thickness, a lip substantially triangular in cross sectional area extending from the cup side wall and formed by one of the plaits, the multiple thickness portions of the plait severally forming the side walls of the 11p and the single thickness portion of the plait forming the lip apex.
6. A paper cup comprising a unitary side wall pleated to provide a plurality of thicknesses of material about substantially the entire rim of the cup rolled over to form a bead, and a lip extending from the cup side wall and formed by a plurality of adjacent pleats, the lip bead portions being flattened to provide a plurality of thicknesses of paper about'the entire rim of the lip.
KENNETH C. HAMILTON.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Name Date Kinnard Jan. 3, 1899 Hogan Mar. 26, 1912 Shaw Aug. 6, 1912 House Nov. 17, 1914 Wolf, Jr. Sept. 5, 1916. Fermier Mar. 11, 1919 Hill July 22, 1919 Huntley June 17, 1924 Guenther Oct. 27, 1936 Barbieri Aug. 3, 1937 Smith Dec. 21, 1937 Nagle Aug. 23, 1938 Renner Aug. 8, 1944