Manufacturing container or tube from paper; or other manufacturi – Bending – Pulling over an edge
Patent
1992-10-26
1995-04-18
Terrell, William E.
Manufacturing container or tube from paper; or other manufacturi
Bending
Pulling over an edge
493460, 493462, 162271, B31F 114, B31F 100, B65H 2310, B65H 1600
Patent
active
054074177
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a ribbon curling device, particularly for curling the ends of gift wrapping ribbon.
Gift wrapping ribbon is typically made of polypropylene and has the property that it curls up if tension or shear forces are applied to one side of the ribbon only. This characteristic can be used to produce pleasing decorative effects, such as ringlets, on the ends of ribbon used to tie up a gift package.
One method of forming ringlets is to pull the ribbon over a blade; usually the thumb holds the ribbon against the blade and there is a consequent danger of the user cutting his hand.
My published U.K. Patent Application 2221871 discloses a ribbon curling tool which comprises relatively movable arms respectively having a blade and pad between which the ribbon can be squeezed prior to being pulled therethrough. This device avoids the danger of the user cutting his thumb but requires two handed operation.
It is an object of the present invention to provide an improved ribbon curling device which may also incorporate a ribbon dispenser.
According to the invention there is provided a ribbon curling device having a curling edge and ribbon guide means spaced from the curling edge, in use the guide means controlling the approach angle of ribbon to said edge.
The guide means and curling edge may be fixed relative to one another. Alternatively one of the guide means and curling edge may be movable relative to the other to vary the ribbon approach angle.
The device may be incorporated in a dispenser for use with a source of ribbon.
The device may further include means for controlling the exit angle of ribbon from said edge. In a preferred embodiment a dispenser includes upstanding walls adjacent the ribbon exit aperture of said dispenser. Preferably the curling edge is in the wall of such a dispenser immediately adjacent the ribbon exist aperture; the curling edge may comprise a blade forming one edge of said aperture.
The device may further include drag means for providing resistance to ribbon passage across said curling edge. In one embodiment said drag means comprises a curved surface, the drag force being insufficient to impart a curling effect to the ribbon.
A preferred embodiment includes movable guide means in the form of a cam spaced from the curling edge and having a plurality of guide faces each capable of imparting a different approach angle to the ribbon. Rotation of the cam results in a different ribbon approach angle.
In one position the movable guide means may allow ribbon to be pulled past the blade without contact therewith, thus permitting uncurled ribbon to be drawn from the supply.
When incorporated in a dispenser the device may be bench mounted or hand held.
Other features of the invention will be apparent from the following description of a preferred embodiment shown by way of example only in the accompanying drawings in which:
FIG. 1 is a transverse section through a ribbon dispenser incorporating the invention;
FIG. 1a is an enlargement of part of FIG. 1 showing an alternative feature;
FIG. 2 is a transverse section on line 2--2 of FIG. 1;
FIG. 3 is a partial transverse section corresponding to FIG. 1 and showing an alternative embodiment of the invention;
FIG. 4 is a partial end view of the dispenser of FIG. 3;
FIG. 5 is a partial transverse section through another alternative ribbon dispenser incorporating the invention;
FIGS. 5a-5g illustrate various ribbon guide arrangements suitable for use with the dispenser of FIG. 5;
FIG. 6 is a partial transverse section through a dispenser/incorporating yet another embodiment of the invention;
FIG. 7 is a partial plan view of the dispenser of FIG. 6;
FIG. 8 is a partial transverse section through a dispenser incorporating yet another embodiment of the invention;
FIG. 9 is a schematic illustration of a cam plate incorporated in the dispenser of FIG. 8;
FIGS. 10-12 show an alternative cam plate for the dispenser of FIG. 8;
FIG. 13 is partial transverse section similar to FIG. 8 and showing yet another cam plate; and
FIG. 14 is a sectio
REFERENCES:
patent: 754797 (1904-03-01), Ostrander
patent: 1150608 (1915-08-01), Lundeberg
patent: 3263883 (1966-08-01), Waltz
patent: 3552668 (1971-01-01), Kanno
patent: 3962957 (1976-06-01), Hinzmann
patent: 4339855 (1982-07-01), Demiere
patent: 4952281 (1990-08-01), Akira
patent: 5013291 (1991-05-01), Granger
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