US 4,069,647 A · Device for crimping projecting edges of wrapping sheet in coin packaging machine

Abstract

Each of two crimping hooks for crimping projecting edges of a piece of wrapping paper wrapped around a coin stack in a coin package machine has an inner guide surface of a convolute shape designed to curl and crimp positively a respective projecting edge when pressed against that projecting edge, as the wrapping paper is rotated together with the coin stack, the edge thus crimped forming a bead by which the coin stack is tightly packaged in a stably rigid state.

Claims7

Dependent claims

In a coin packaging machine operating to wrap a piece of wrapping sheet material around the cylindrical surface of a coin stack and to fold or roll crimp projecting edges of the sheet material at the ends of the coin stack thereby to form a tightly wrapped coin package, a pair of crimping devices each having at least a main crimping hook comprising a shank position, during crimping, alongside and substantially parallel to the wrapped coin stack and a curved head joined at a proximal part thereof integrally to an outer end of the shank and extending substantially perpendicularly therefrom to a distal end, the curved head having an inner guide surface of twisted shape including a convolute groove-shaped slide surface and adapted to straddle obliquely across a respective one of said projecting edges undergoing rotation together with the coin stack during crimping, whereby said projecting edge is compelled, when pressed by the inner guide surface, to slide against and along said slide surface thereby to be curled and crimped inward toward the centerline of the coin stack and to be formed into an annular bead.

In a coin packaging machine operating to wrap a coin stack with a piece of wrapping sheet material and to fold or roll crimp projecting edges of the sheet material at the two ends of the coin stack thereby to form a tightly wrapped coin package, a pair of crimping hook devices, each device having at least a main crimping hook adapted to crimp a respective one of said projecting edges as the wrapped coin stack is rotated about its centerline axis and comprising a shank and a curved head joined at a proximal part thereof integrally to an outer end of the shank and extending substantially perpendicularly therefrom to a distal end, the curved head having:

an inner guide surface of concave substantially arcuate shape as viewed in side view;
a concave surface having an arcuate shape as viewed in section taken along a plane passing through the axis of the shank and formed on a side face at a part near said distal end to contact said sheet material;
a curved tip part formed at the distal end;
a groove-shaped slide surface formed in and obliquely across said inner guide surface to adjoin at one end thereof said concave surface and to extend therefrom to the outer end of the shank on the side thereof opposite from the concave surface, the inner guide surface thereby having a twisted shape;
and a smooth inclined surface formed at said outer end of the shank to blend smoothly with said slide surface and facing in the direction opposite to that of the concave surface, the shank during operation being positioned closely alongside and substantially parallel to the wrapped coin stack, the curved head being adapted to extend obliquely across said respective projecting edge thereby to straddle the same during crimping, whereby said projecting edge is compelled, when pressed by the curved head, to slide against and along said groove-shaped slide surface thereby to be crimped inward toward the centerline of the coin stack and be formed into an annular bead.

2 more elements

In a coin packaging machine operating to wrap a coin stack with a piece of wrapping sheet material and to fold or roll crimp projecting edges of the sheet material at the two ends of the coin stack thereby to form a tightly wrapped coin package, a pair of crimping hook devices, each device comprising a first crimping hook member including a straight shank portion and a curved head portion formed integrally with said shank portion and extending outward in a direction substantially perpendicular to said shank portion;

said curved head portion having:
a root part joining said shank portion;
an outer tip part curvedly extending from said curved head portion distal end to project laterally toward the inner surface of a wrapping sheet material positioned about a coin stack;
an inner guide surface with a substantially arcuate concave shape;
a concave surface adjacent said outer tip part, with a concave arcuate shape and adapted to contact the inner surface of the projecting edge of the wrapping sheet material projecting beyond an end of a coin stack;
a groove-shaped slide surface extending obliquely across said inner guide surface and having a first end smoothly adjoining said concave surface and a second end adjacent said shank portion;
a flank formed with a curved edge of an arcuate concave shape and having, at the part thereof joining said flank, a smooth fair curved surface, one part of which has a shape following said groove-shaped slide surface and conformably adapted to a surface of a projecting edge of a wrapping sheet material;
and
a second crimping hook member adjacent said first crimping hook member at a position upstream therefrom with respect to the movement of the wrapping sheet material and on the inner side thereof, said second crimping hook member including a substantially cylindrical shaped body portion with a recessed, smoothly curved surface formed in one side thereof and facing in the same direction as said first crimping hook member groove-shaped slide surface, and with a projecting edge part at the outer end of said recessed smoothly curved surface, said projecting edge part projecting, at the same height as said first crimping hook member outer tip part, further toward the inner surface of the wrapping sheet material than said outer tip part.

6 more elements

Dependencies are inferred from the claim text.

Abstract

Claims7

Dependent claims

an inner guide surface of concave substantially arcuate shape as viewed in side view;
a concave surface having an arcuate shape as viewed in section taken along a plane passing through the axis of the shank and formed on a side face at a part near said distal end to contact said sheet material;
a curved tip part formed at the distal end;
a groove-shaped slide surface formed in and obliquely across said inner guide surface to adjoin at one end thereof said concave surface and to extend therefrom to the outer end of the shank on the side thereof opposite from the concave surface, the inner guide surface thereby having a twisted shape;
and a smooth inclined surface formed at said outer end of the shank to blend smoothly with said slide surface and facing in the direction opposite to that of the concave surface, the shank during operation being positioned closely alongside and substantially parallel to the wrapped coin stack, the curved head being adapted to extend obliquely across said respective projecting edge thereby to straddle the same during crimping, whereby said projecting edge is compelled, when pressed by the curved head, to slide against and along said groove-shaped slide surface thereby to be crimped inward toward the centerline of the coin stack and be formed into an annular bead.

2 more elements

In a coin packaging machine operating to wrap a coin stack with a piece of wrapping sheet material and to fold or roll crimp projecting edges of the sheet material at the two ends of the coin stack thereby to form a tightly wrapped coin package, a pair of crimping hook devices, each device comprising a first crimping hook member including a straight shank portion and a curved head portion formed integrally with said shank portion and extending outward in a direction substantially perpendicular to said shank portion;

said curved head portion having:
a root part joining said shank portion;
an outer tip part curvedly extending from said curved head portion distal end to project laterally toward the inner surface of a wrapping sheet material positioned about a coin stack;
an inner guide surface with a substantially arcuate concave shape;
a concave surface adjacent said outer tip part, with a concave arcuate shape and adapted to contact the inner surface of the projecting edge of the wrapping sheet material projecting beyond an end of a coin stack;
a groove-shaped slide surface extending obliquely across said inner guide surface and having a first end smoothly adjoining said concave surface and a second end adjacent said shank portion;
a flank formed with a curved edge of an arcuate concave shape and having, at the part thereof joining said flank, a smooth fair curved surface, one part of which has a shape following said groove-shaped slide surface and conformably adapted to a surface of a projecting edge of a wrapping sheet material;
and
a second crimping hook member adjacent said first crimping hook member at a position upstream therefrom with respect to the movement of the wrapping sheet material and on the inner side thereof, said second crimping hook member including a substantially cylindrical shaped body portion with a recessed, smoothly curved surface formed in one side thereof and facing in the same direction as said first crimping hook member groove-shaped slide surface, and with a projecting edge part at the outer end of said recessed smoothly curved surface, said projecting edge part projecting, at the same height as said first crimping hook member outer tip part, further toward the inner surface of the wrapping sheet material than said outer tip part.

6 more elements

Dependencies are inferred from the claim text.

Device for crimping projecting edges of wrapping sheet in coin packaging machine

Life of this patent

Abstract

Claims7

Device for crimping projecting edges of wrapping sheet in coin packaging machine

Life of this patent

Abstract

Claims7