US 5,678,965 A · Core router and method

Abstract

A device and method are provided for reducing a length of an annular core on which a roll is mounted. If the core extends beyond the end of the roll, the roll is unstable when it is stacked. This device and method will trim the length of the core extending beyond the end of the roll to provide a flat face across the entire end of the roll. A stable stacking arrangement will therefore be ensured. The router includes a collar, a router bit and a transparent disk or plate mounted thereon. The router bit will chip away the portion of the core which extends beyond the end of the roll. A vacuum can be operatively attached to the router in order to remove chips formed by the router bit. The collar on the router will keep the bit spaced from the roll to prevent damage to the roll. This collar and the transparent disk or plate will also aid in guiding the router.

Claims14

Dependent claims

A method for trimming an annular core with a centrally disposed opening, a roll of paper being mounted on the core, the method comprising the steps of:

providing a router with a router bit and collar;
placing the collar in the opening of the core;
moving the router over a portion of the core which extends longitudinally beyond the roll;
guiding the router bit with the collar in the core opening during the step of moving;
protecting the roll of paper from the router bit during the step of guiding by preventing the router bit from cutting into the paper;
and
removing the portion of the core which extends longitudinally beyond the roll with the router during the step of moving the router, a length of the core which extends longitudinally beyond the roll being routed during the step of removing.

4 more elements

A combination of a core and a device for trimming the core, the combination comprising:

the core having an annular shape with a centrally disposed opening, a roll of paper being mounted on the core;
the device for trimming having means for removing a portion of the core which extends longitudinally beyond the roll and means for discharging waste produced by the means for removing, the means for removing reducing the length of the core which extends longitudinally beyond the roll, the means for discharging using suction for removing waste produced by the means for removing;
the means for removing including a router with a rotatable router bit mounted thereon, the router bit being engageable with the portion of the core extending longitudinally beyond the roll such that upon rotation of the bit, the portion of the core is chipped away, chips formed by the router bit being the waste which is removed from an area adjacent the bit by the means for discharging;
and
means for protecting the roll of paper from the router bit, the means for protecting comprising a collar mounted on the router bit, the collar being engageable with a side of the opening in the core when at least a part of the portion of the core is chipped away, the collar preventing the router bit from engaging the roll, the collar further guiding the router.

2 more elements

Dependencies are inferred from the claim text.

Core router and method

Life of this patent

Core router and method

Life of this patent

Abstract

Claims14