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Патент USA US2110765

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March s, 1938.
R. ‘L. GRAY n AL
Filed ‘Feb; 18, 1936
Lou/s M Lac/n.
Patented Mar. 8, 1938
Robert L. Gray, Brooklyn, N. Y., and Louis V.
\Lucia, West Hartford, Conn., assignors to
Lueup Corporation, Brooklyn, N. Y., a corpora
tion of New York
. Application February 18, 1936, Serial No. 64,506
8 Claims.
(01. 229-15)
This invention relates to drinking cups, and
more particularly to that type of cups which are
made from paper or similar fibrous material.
These cups, as now commonly made, consist
5 of -a blank cut from a sheet of paper material
which is folded upon itself to form a container
or drinking cup.
Although there are paper drinking cups which
have a folded, or beaded drinking edge, the most
economical type of cups are simply produced from
a thin sheet of paper and with a thin drinking
edge which is comprised only of a single thick
ness of the paper material.
It is ‘well known
that such cups with thin edges, although the
15' most economical to produce, are unsafe in their
use for drinking astheir thin edges can cause
injury by cutting the lips of the user.
An object‘ of our invention, therefore, is to
provide a drinking cup having a safe edge with
20 out necessitating the folding or beading of the
said edge.
Our invention is illustrated in the accompany
ing drawing in which:
Figure l is a rear view of a ?at type paper
drinking cup comprising our invention.
Figure 2 is a side view in elevation showing
, the said cup in its extended form.
Figure_3 is a view, in perspective, of another
type of a cup to which our invention may also be
Figure 4 is a fragmentary view on an enlarged
scale, in vertical section, illustrating our improved
drinking edge for a paper cup.
Figure 5 is a similar view illustrating the com
40 mon form of the drinking edge of said cups.
As illustrated in the drawing:
The numeral 5 denotes a drinking cup which is
formed from a blank of paper that is folded over
upon itself and secured together at its over
45 lapping edges as at 6. The bottom of the said
cup is formed by further folding the said blank
as indicated at ‘I.
In a cup of the form shown in Figures 1 and
50 2, the front, or drinking side of the cup is curved,‘
as at 8, and extends above the rear edge 9 so
that when the cup is extended as in Figure 2,
the edge iii of the said extending portion 8 is
used as the drinking edge.
' 55 -
Our invention relates particularly to the pro
vision of a soft drinking edge for a cup of the
type commonly made from a paper blank and
which has a thin edge of single thickness."
In other words, by our invention we provide
for a cup of the character described, a drinking
edge which is velvety, as that illustrated in Fig
ure 4 of the drawing, instead of an edge which 10
is sharp as at l2, as shown in Figure 5, and which
is the form of an edge that all of the cups of said
. type now have for the reason that the said edge
is thus formed by the present method of cutting
the blanks from a. stack of ‘paper sheets with 16
'a cutting die upon a wooden block.
The objects of this invention may be accom
plished in any suitable manner whereby the
drinking edge of a cup will be formed in any
desired shape and still leave the'?bers of the 20
blank material freely extended along the said
A further object‘is to provide a cup of the
type described which has a drinlnng edge that is
in effect, what might be properly termed, a
25 “velvet" edge, inasmuch as the said edge has a
pile con‘sisting‘of loose ?bers similar, to velvet.
drinking edge ii of the cup is straight and any
portion thereof may be used in drinking.
In the form of a cup shown in Figure 3, the
edge to provide a velvety edge.
In one method of providing such an edge for
the cups, the blanks are cut from a single sheet
of paper by a male and female type of cutting 25
die which may be dulled along that portion there
of which cuts the drinking edge of the blank so
that, in the cutting operation, the'material along
the said edge is pulled apart, instead of being cut
or sheared; thus leaving the ?bres of the said 30
material in a disrupted state and thereby forming
an edge which is softer in texture than the ma
terial of the cup.
Another method whereby the said edge may be
obtained, is that of loosening the ?bers along 35
the said drinking edge after the blanks have been
cut by the above described present method, either
before or after the cup has been formed. This
may be done by means of a wire brush, or by what
is called in the art, a “deckeling” process, or fur 40
ther, by the treatment of the said drinking edge
with certain chemical, “either alone or in com
bination with a. mechanical process.
It will be clearly seen, from the illustrations I
in the drawing, that the said drinking edge will 45
then be lined with a pile of loose fibers from the
material of the blank so that it cannot cut the
user's lips. -
It. is desired to have it understood that al
though we have described some of the methods 50
whereby a “velvet” or soft edgemay be formed
for a paper drinking cup to render the said cup
safe in the use thereof, other methods may be
used, if desired, without departing from thescope
of our invention.
We claim:
1. A drinking cup oi! the character described in‘
which the material thereof is substantially sof
tened in texture at the drinking edge of said cup.
2. A paper drinking cup having a velvety drink
ing edge of single thickness comprising a pile of
loose ?bres.
3. A drinking cup of the character described
formed from a blank of sheet material and hav
10 ing a velvety drinking edge.
the paper are substantially disrupted to form a
pile of loose ?bres.
5. A drinking cup of the character described
having an unbroken free drinking edge which is
substantially softer in texture than the mate
' v
paper are purposely disrupted to provide a sub
stantial pile of loose ?bres and thereby reduce "
the cutting tendency of. said edge.
7. A paper cup 01' the character described 5
formed from a. blank which is ?rst cut and then
treated to change the structure of the free edge
thereof to reduce the cutting ‘tendency of the said
edge which forms the drinking edge 01 ‘said cup.
8. A cup formed from. a blank of paper which 10
4. A ,paper drinking cup having a drinking
edge of single-thickness along which the fibers of
rialoi‘ said cup.
having a free edge along which'the ?bres of the
6. A paper article‘ of the character described
is especially treated, either during the operation
of cutting the same or by a separate operation.
to change the structure of the free edge of said
blank to reduce the cutting tendency of the said
edge thereof which forms the drinking edge of 15
said cup.
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