Dec-15-98 15:48 From-Furman ~ Kallio-RCA..o22s6ios i99s-i2;is06_359-6956 T-445
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Dec-15-96 15:49 From-Furman i Kallio-RCA o22s6ios i99s-i2-is06-359-6956 T-445
P.O6/24 F-t45
PBcK 480-Q2-40
- Page 2 -
DISPENSER FOR ROL~.Eb SHEET MEDIA
s This invention is in the field of dispensers' for rolled sheet media such as
toilet paper, paper
towels and plastic film and in particular such a dispenser which allows one-
handed removal
of the desired amount of media from the roll.
to BACKGROUND
Rolled sheet media are presently generally of the form wherein a spring loaded
pin extends
through the central cardboard cylinder of the roll and the roll may spin
freely on the pin. A
new roll is put in place by pushing the pin against the bias to free one end
of the pin and
is remove same. Alternatively, Short sections of pin extend into each end of
the cardboard
cylinder, held in place by brackets and by a biasing force on the brackets
which is overcome
to replace the roll. Such dispensers require some manipulation to properly
position the pins
for replacement of the new roll in the dispenser. As a result, the roll is
often lefr on the floor
or counter rather than being installed on the dispenser, particularly where
several different
ao people use the material and one or more do not have the patience to install
the new roll.
Dec-15-98 15:49 From-Furman a Kallio-RCA"o22s6ios i99s-i2ysOg-359-6956 T-445
P.O1/24 F-145
F&K 480-02-00
- Page 3 -
When media is removed from a roll, one hand is used to restrain rotation of
the roll and the
other is used to tear or cut off the sheet required. The brackets in some
dispensers may exert
a force against the ends of the roll thereby retarding the free rolling
movement of the roll and
facilitating tearing or cutting media from the roll. This method does not work
well with
s petfiorated sheet media such as toilet paper or paper towels as the force
required to rotate the
roll is often sufficient to unintentionally tear the media along the
perforations.
A dispenser that allowed one handed operation while allowing the roll to
rotate substantially
freely while unrolling the desired amount of sheet media would be beneficial.
Such a
><o dispenser where replacement ofthe roll was easily accomplished would be
further beneficial.
S>1JMMAR'Y OF TII~ 1~'ENTION
is It is the object of the present invention to provide a dispenser for rolled
sheet media that rnay
be eft'ectively operated with one hand.
It is the further obj ect of the present invention to provide such a dispenser
that is easy to load.
zo The invention accomplishes its obj ects providing in a first aspect a
dispenser for rolled sheet
Dac-15-9B 15:49 From-Furman a Kallio-RBA o22s6ios i99s-i2-isp6-359-6956 T-445
P.08/24 F-t45
F&k 480-02-00
- Page 4 -
media comprising a frame adapted for mounting to a surface, said frame having
a front side
fox dispensing said rolled sheet media and an opposite back side; means to
rotatably attach
a roll of sheet media to said frame such that said roll is substantially
horizontal and such that
said roll rotates substantially freely when said sheet media is pulled from
said roll in a
s horizontal direction; and means to retard the free rotation of said roll
when said sheet media
is pulled from said roll in a direction that is below said horizontal
direction, the degree of
retardation increasing as the degree ~of pull below said horizontal direction
increases.
The frame could define facing slots oa each end thereof, the slots spaced
apart to
io accommodate the length of a roll between them and oriented at an angle to
the vertical such
that the bottom end of each slot is nearer the back side of the frame than is
the top end of
each slot and the means to rotatably attach a roll of sheet media could
comprise a pin having
two ends, each end slidably engageable in one of said slots. The means to
retard the free
rotation of the roll could be a retarding member attached to the frame such
that the roll rests
is thereon when installed on the pin and the pin is slidably engaged in the
slots.
The pin could simply be inserted into the roll and dropped into the sloped
slots. The outside
surface of the roll hits the retarding member and stops. '9fhen sheet media is
pulled
horizontally from the top of the roll the angle of the sloped slots is such
that the roll tends
Zo to rise in the slot reducing friction against the retarding member, and
allowing substantially
Dac-15-98 15:50 From-Furman ~ Kallio-R~A..o22s6ios i99s-i2-is06-359-6956 T-445
P.09/24 F-745
r~K aso-oz.oo
-PageS-
free rotational movement of the roll. The slight grip exerted by the retarding
member during
unrolling will also help to prevent over-rolling and subsequent waste of sheet
media. As the
angle of pull is moved downwards, the roll tends to move down in the slots and
against the
retarding member, thereby increasing the grip of the retarding member on the
roll and
s retarding rotational movement thereof. The farther the angle of pull is from
the horizontal,
the greater the grip of the retarding member.
The retarding member could extend horizontally from one end of the frame to
the opposite
end thereof and thereby contacting the roll along its entire length, although
a shorter retarding
>lo member would be serviceable. In order to retain proper contact with the
retarding member
as the diameter of the roll decreases with use, the retarding member could be
located adjacent
to the bottom ends of said slots, or actually inside the slots. The retarding
member could be
a cylindrical member, or a rectilinear member where the roll rests on one of
the comers. The
retarding member could further coimprise a plurality of protrusions thereon,
or a rough
is surface, for gripping the roll.
For different sites and types of rolled sheet media, some simple
experimentation will lead
to the most satisfactory slot angle, retarding member and location of the
retarding member.
Tt is contemplated that the slot angle for most applications would be between
1 S ° and 45 °
2o from the vertical.
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P.10/24 F-745
FBcK 430-02-00
- Page 6 -
A cutting member could be supported by the frame for cutting un-perforated
sheet media
such as waxed paper and plastic film. The cutting member could comprise a
serrated edge
located below the roll near the front side of the frame and having the
serrations thereof
pointed towards the front. The sheet media would then hang over the cutting
member and
s when pulling down, the sheet could also be pulled ba.clc against the
serrations for cutting.
In a second aspect the invention provides a dispenser for rolled sheet media
comprising a
frame adapted for horuontal mounting to a surface, said frame having a front
side for
dispensing said rolled sheet media from a roll and an opposite back side; two
end members
io supported by said frame and separated by a sufficient distance to
accommodate the length
of said roll; a pair of corresponding facing slots, one such slot defined in
each said end
member, said slots oriented at an angle to the vertical such that the bottom
ends of each slot
are nearer to said back side of the frame thin are the top ends thereof; a pin
having two ends,
said pin slidable in the axial aperture of a roll of sheet media and slidably
engageable at each
is end thereof in one of said slots; a retarding member located such that said
roll rests thereon
when said roll is installed on said pin and said pin is engaged in said slots.
DESC~~TxON OF THE DRAWINGS-
xo
Dec-15-98 15:50 From-Furman eG Kallio-RCa.,o22s6ios i99s-i2-1506-359-6956 T-
445 P.11/24 F-T45
FBcK 480-Q2-00
- Page 7 -
While the invention is claimed in the concluding portions hereof, preferred
embodiments are
provided in the accompanying detailed description which may be best understood
in
conjunction with the accompanying diagrams where like parts in each ofthe
several diagrams
axe labeled with like numbers, and where:
s
Figure 1 is a perspective view of the dispenser embodiment holding a full roll
of
sheet media ;
Figure 2 is top view of the parts of the dispenser of Figure 1 laid out on a
surface;
><o ,
Figure 3 is a cross-sectional view of the dispenser of Figure 1 along line MM;
Figure 4 is an end view of an alternate retarding member with protrusions on
the
surface thereof;
ys
Figure 5 is cross-sectional view as in Figure 3 wherein the roll of sheet
media is
almost empty;
Figure 6 is a cross-sectional view as in Figure 3 with the roll and pin
removed,
2o showing an alternate retarding member with a rectilinear cross-section.
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DETA)~.Eb bESCRIPTION OF TAE ~,LUSTRATED EMBODIMENTS~
Figure 1 illustrates a dispenser for sheet media comprising a frame 1 adapted
for mounting
s to a surface such as a wall 2. The frame 1 has a front side 3 for dispensing
from a roll 5 of
sheet media and an opposite back side 4, which is attached to the wall 2.
Figure 2 shows the parts of the dispenser laid out on a surface. The frame 1
is made up of
the back member 10 which is glued or otherwise attached to the two end members
8. Each
io end member defines an angled slot 7, the bottom of the slot 7 being closer
to the back
member 10 than the top thereof. The illustrated angle N of the slot to the
vertical is 30°. It
is contemplated that this angle will be between 15 ° and 45 °
for most applications. A roll pin
6 has opposite ends slidably engaged in one of the angled slots 7, such that
the roll pin 6 may
move freely along the slots 7.
is .
Each end member 11 also defines a recess 12 to accommodate the ends of the
retarding
member 13. The retarding member 13 is also glued or otherwise fixed in the
recesses 12
during assembly. Figures 2 and 3 illustrate a retarding member with a
cylindrical cross-
section. Figure 4 shows a plurality of protrusions 14 on the surface of the
cylindrical
zo retarding member 13, which may be required to properly grip the surface of
the roll 5 of sheet
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media such as plastic wrap, which is slippery and slides easily on the
retarding member. The
protrusions may be sharp or blunt, depending on the application. For paper
towels, toilet
paper and the like, a somewhat roughened surface on the retarding member 13
should suffice
to grip the roll 5. Alternatively, the retarding member 13 could have a
recxilinear cross-
s section as shown in Figure 6. The roll 5 rests on one corner of the
retarding member 13,
thereby providing the required grip.
The retarding member 13 could be of another shape, or could contact only a
portion of the
length of the roll 5 rather than the whole length as is illustrated . All that
is required is that
;<o the roll 5 rest thereon so that rotation of the roll may be retarded, and
so that the roll drop
down the slot, always resting on the retarding member, as the sheet media is
used up and the
roll diameter decreases.
Alsa illustrated in Figure 2 is an optional cutting member 11. During assembly
the cutting
~s member 11 is glued, screwed ar otherwise fixed to the bottom of each end
member 8.
Serrations 15 on the cutting member 11 face down and towards the front side 3
of the
dispenser. These are used to cut off the desired amount of un-perforated sheet
media such
as plastic wrap, wax paper and the like.
2o Figures 3 and 4 illustrate the operation of the dispenser. In operation,
the pin 6 is inserted
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into the axial aperture 9 of the roll 5 and is then dropped into the pair of
slots 7. The pin 6
and roll 5 drop down the slots until the outer surface 17 of the roll 5
contacts the retarding
member 13, and the roll 5 is thus positioned horizontally in the dispenser.
s The free end 16 of the roll 5 of sheet media is illustrated at various
positions A, B, C and D.
As a pulling force is exerted on the free end 16 in direction A, the
components of the force
relative to the slots 7 are indicated by arrows X and 'Y. The X component is
the force along
the slot 7, and the Y component is the force perpendicular to the slot 7. In
position A it can
be seen that the X component is towards the top of the slot 7 and so the roll
will tend to ride
io up in the slot 7 and away from the retarding member 13, thereby reducing
the grip of the
retarding member 13 on the surface 16 of the roll 5. As the free end 16 is
moved down, the
X component of force is reduced until at position B, perpendicular to the slot
7, it is zero.
As the &ee end moves past position B, the X component of force is directed
down the slot
7, and forces the surface 16 of the roll 5 against the retarding member 13,
increasing the grip
is thereon. At approximately position C, the grip is such that a perforated
sheet media may be
tom off. The exact position will also depend an the manner of pulling, whether
a steady pull
or a jerking pull. The degree of grip may be adjusted for different sheet
media by using a
different retarding member, with or without a rough surface or protrusions
thereon, or by
adjusting the angle N of the slots 7.
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The forces and results similarly apply as the roll is used and the diameter
thereof is reduced
to the point illustrated in Figure 5, where the roll 5 is almost empty.
For un-perforated sheet media, the free end 16 is moved farther down to
position D, wherein
s the sheet media is cut by the serrations 1 S on the cutting member 11. As
can be seen, at that
point the X component is larger still, adding gripping force of the retarding
member on the
surface 16.
Thus the roll 5 rotates substantially freely when the sheet media is puked
therefrom in a
io horizontal direction. The free rotation of the roll 5 is retarded when the
sheet media is pulled
in a direction that is below the horizontal direction A, wherein the X
component of force
upwards in the slot 7 is reduced. The degree of retardation increases as the
degree of pull
below the horizontal direction A increases, and the X component falls to zero,
and then
begins to act downwards in the slot 7 and pulls the roll 5 against the
retarding member 13.
as
The dispenser may thus be operated with one hand, pulling horizontally to
unroll the desired
amount, and then pulling down to "lock" the roll and tear or cut off the
desired amount. The
dispenser is easy to load, as the roll pin~6 simply drops into the slots f,
and there is no
biassing to overcome.
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The foregoing is considered as illustrative only of the principles of the
invention. Further,
since numerous changes and modifications will readily occur to those skilled
in the art, it is
not desired to limit the invention to the exact construction and operation
shown and
described, and accordingly, all such suitable changes or modifications in
structure or
s operation which may be resorted to are intended to fall within the scope of
the claimed
invention.
