US1690586A - Collapsible paper cup - Google Patents

Description

Nov. 6, 1928. 1,690,586

w. J. MAIN COLLAPSIBLE PAPER CUP I Original Filed Jan. 26, 1924 2 Sheets-Sheet, 1

INVENTOR ATTORNEY COLLAPSIBLE PAPER cur Original Filed Jan, 26, 1924 g s eets-she 2 INVENTOR ATTORNEY-\- a down, and need Patented Nov. 6,1928. r

UNITED STATES wmunl J.- u'nr, or wnsrronzr,

coimnc'rrcnr, assronoa romm, or

. new Yonx, mm

99mm rnanf our.

Applicatlon'fled January 20,1924, Serial n. seas-2a "a imal as. :1, 1m. 7

My invention relates more particularly to a flat folding or collapsible cup, which is normally fiat like anenvelope but, whenv opened, is provided with an integral flat bottom, permitting the cup to stand npr-ight.

I am aware that many varieties of the envelope type of cups are to be found upon the market, and the, convenience in packing and cheapness of this type of cup is wel recognized, but they have the disadvantage,- of being without a flat bottomwhen opened and, therefore, canno,t-be set down, but must be held in thehand" when filled or in use. Therefore, one ob'ect of my improvement is to rovide a' flat olding cup, with a suitable Kat bottom, that when in use, it may readily set not be continually held in thehandJ a In view of the fact that cups of this char acter are usually made from a single thickness of for the 1p of the cup, which is somewhat inconvenient to drink from, a further object of my improvement is to provide acollaps- .ible cup of this character, with an outward fold at the lip thereof to provide a double thickness, uncut edge for the lip of the cup, thereby avoiding the unpleasantness of hav ing the raw edge of the pa 1' comin in contact with the lips when inking f rom thecup. v a

A further object of myimprovementjis to rovide a single blank, which, ,when fol ed by reverse folds on a longitudinal line, will form a saddle fold for the bottom of the cup, and the dia nal corners of the blank are provided wit tongues extending laterall and longitudinall ,-which are adapte to .form the double-lip folds when the cup is completed.

"In the accompanying drawings, I have shown one form of m improved cup, the p blank being shown in ig..1; Fig. 2 shows "thehlank partially folded to form the saddle fold of the bottom; Fig. 3 presents a' top 'plan view of the partially completed cup, as shown in Fig. 2- Fig. 4 showsa'further ,development andolding of the cup, the

c. of the blank being secured together; Fig. 5 shows a vertical section on t e line h Pa al y completed m? of the'completed cup on the when the cu is opened, so 1 paper and 'have araw or cut edge shown is Fig. 4; Fig. 6 shows the completed cup, in the flat form; Fig. 7 larged vertical section (partiall distended) shows an en-.

e 7-7 of- Fig. 6; Fig. 8 shows a to plan view of the cupafter it, is opened; view of the cup when. open; Fig. 10 shows the opened cupin side elevation; Fig. 11 is another side elevation of .the cup atright ig. 9-is abottom angles to the view shown in Fig.10'; and Fig. 12 is a vertical section of the opened cug taken on the line. 12- 12 of Fig. 10.

. eferring to the drawings, the blank 1 from which. the cup is formed, is shown in Fig. l, and comprises an irregular piece of aper or suitable material, preferably punc ed or cut substantially to the form indicated.

The blank thus formed has lateral edges 2' and 3, converging from the ends 4 toward the center of the blank or toward the ends of an imaginarymedian line, indicated by dotted line A in Fig. 1,-extending transversely of the blank at its middle, the halves of theblank being reverse duplicates. The edge3,

however, ispreferably located further away i from a longitudinal median line 5, soas -to provide for a strip overlapping the adjacent edge 2, when the blank is folded to form the cup.- A dotted line 6 corresponds in'position to the line 2 and indicates the amount of overlap; the line. 6 meeting the end of the line representing the edge 2, as readil -sen tion of the edge 2 with the line 6, thus preventing more than a double thickness of aper at these ints when the' cup blankis folded. The b nk'l, may be scored along the line.5 and along the lines 9 and 10,- .the latter of which meet to form .a diamond- 1 shaped figure, as indicated in Fig. 1'.

., The blank 1.is foldedin a reverse-, foldalongthe scoring lines 5, 9' and 10, the'fold along the line 5 from the meets thelines 9 ilindflO being opppsiteto h o d on the portion 6, of the leeg ud nel point where it.

line within the diamond formed by the lines 9 and 10. In *other words, the edges 2 and 3 of eachhalf of the blank are folded upward toward each other along the lines 5, 9 10, while theportions of the blank between the lines 9*"and 10 in the diamond are folded downward on the line 5, thus formmga saddle fold, substantially as shown in Fig.2,

where the saddle fold line 5 is indicated by folded. The longitudinally extending por-" tions of the tongues 11 areadapted to be folded outward and down, along the dotted line 13, when the cup is completed, as shown in Fig. 6 of the drawings. The overlapping edgesof the blank between the edges '3 and or covered with suitable cement, as

shown in-Fig. 2 of the drawings. Continu I also the laterally extending portion 12 of the tongue, below the line 13, substantiallyas r ing the folding, theblank is then brought f to the position shown in Fig. 3 and the overlapping edges and tongue secured together. This leaves the lower points'or tabs 14 of the 4 saddle fold projecting downward, as shown p letethe cupin the flat form, as shown in in ,3 and 5, and these are then prefer-. ably folded inward along the line15 to comigs. 6 and 7, the tabs14 being gummed and I secured to the won of the saddle fold. The

of the drawings. V

The tongue 11, as previously stated,

folded edges 15 of the 'saddle fold, will thus determine the bottom of the cup, which, in this case will be substantially square when the cup 1s opened, as shown in Flgs. Sand 9-' folded outwardly and down as shown in Figs. and 7 over the joint between the two opposlte ends of the blank, so that, as indi-- cated in Figs. 6 and 10', the tongue 11 form alip of double thickness, thereby give ing arounded smooth edge to from.

The cup, whiohhas been described", may be readily manufacturedin its flat or colla sed form, andpacked and Sold that way. en

it is desired to use the cup, it will be found that, by pressure'upon the sides of the cup along the fold lines 5-5, as the cup is I shownin Fig. 6 of the-drawings, the ca will-readily open-and the saddle fo'ld be forced down or unfolded to the position upon which the cup. may stand. The-botspirit and scope of the invention.

reverse 'folds'along a median line 10 blank of paper, having its lateral edges 'ta-' .blank, the blink. being folded along a modian line longitudinallyand on lines at an of fold forming .tplnguesare adapted to'be ,t e shown in Figs. 8 to 12, to form the bottom t om 'being substantially square and ,the

particularly so when it is filled with liquid,

thus' resentinga leasingappearancei The overlihnging tongiie 11 on each side ofthe cup, as shown in- Figs. 10 and 11, forms'a rounded uncut edge or lip for the cup, from which to drink. F ui'thermore, this overhang inglip protects the on at the seam and does not detract from a pearance of the cup, but on the contrary, ad apleasing effect to the appearance of the cup, when viewed from above. u

It will be understood'that while I have shown one form of my improved cup, I donot wish to be limited to the specific details, forobviously, various modifications therein may be made without departing from the I il iT o1 1. co apsi e paper on comprising a single-blank of paper, the teral \edges of which taper uniformly from the ends toward the lines 6 are, as previously stated, gummed the-middle, and diagonally opposite corners are provided. with laterally and outwardly extending tongues, 'the cup formed thy ngl dinallyof the blank, to form a saddle fold at the bottom ofthe cu said tapering edges and said tongues being rought into overlapping relation and cemented together, the pofits of the saddle fold being folded inward .and secured to the wall of the saddle toform the bottom of the cup when the latto es are adapted to fold back to form a do lapping oint..

ter'is open, and'the outer parts of Said lelip over. and on each side of the over- 2. A collapsible cup, formed of o single- .pering umformly toward the middle'of the angleto the median line, the last mentioned a diamond through whichihe longitudinal line of fold extends diagonally, the long way of the diamond, thereb forming a saddle fold withflthelat- .eral es of the-blank coming together and overlaptping'at the middle of the flat folded blank, e diagonally opposite corners of the;

blank being provided with tongues, extnding laterally and longitudinally of the blank,

the'lateral portions of which,.when the blank is folded, extend over the adjacent overlapping -wall and thereto and the Z longitudinally extending portions of the lded back over edge of the-,cupjo' form a, double lip' therefor. M

4 blink t a P p p 3 comprising two similai' halves on each side in which one of the tapering edges on' each of a median transverse line, the edges of each half'of said blank on opposite sides thereof half of the blank tapering inward toward is wider than the other edge, so that when m the ends of said transverse line, and ton ues the blank is folded to form a cup, adjacent -projecting laterally and longitudinally rom edges on the same side of the blank willopposite diagonal corners of saidjblank. overlap.

v '4. The cup blank as claimed in claim 3, WILLIAM J. MAIN.

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