Roller sealing means for sealing containers with closure caps

Claim 2

In an improved roller sealing means for a container sealing machine having a sealing head including a spindle means with rollers mounted thereon for sealing the containers by rolling metal closures onto the container top finishes and with means for providing relative rotation between the spindle and the container tops, the improvement comprising said spinDle means having a vertically movable inner portion movable upwardly with respect to an outer portion of said spindle means, a bracket rotatably supporting each roller, a pivot means pivotally attaching a radially outer portion of each bracket to the outer portion of the spindle means, a second pivot means pivotally attaching a radially inner portion of each bracket to said inner spindle portion whereby the upward movement of the inner spindle portion moves the rollers inwardly against caps on the container finishes, each of said pivot means including radially oriented slot means permitting the brackets to move radially outwardly of the spindle without tilting movement where non-circular container surfaces are encountered, and resilient means urging the brackets radially inwardly of the spindles toward and against the caps with a contact force between each roller and the cap equal to the normal cap shaping force.

Claim 3

The roller sealing means as claimed in claim 1 in which said spindles are mounted on a rotary turret for movement about a stationary support in a circular path, a first elongated arcuate cam means being mounted on said support for controlling the vertical positions of said spindles, and a second elongated arcuate cam means being mounted on said support for controlling the vertical position of said spindle inner portion.

Claim 4

The roller sealing means as claimed in claim 1 in which each roller is rotatably attached to a bracket on an elongated shaft, means slidably containing each shaft in the bracket for axial movement, and resilient means positioned for yieldably positioning each shaft on its bracket.

Claim 5

The roller sealing means as claimed in claim 2 in which each spindle mounts a plurality of rollers with a pair of said rollers on each spindle being aligned radially of said rotary turret.

Claim 6

In an improved roller sealing means for a container sealing machine having a sealing head including a spindle means with a plurality of rollers mounted thereon for sealing the containers by rolling metal closures onto the container top finishes and with means for providing relative rotation between the spindle and the container tops, the improvement comprising said spindle means having a vertically movable inner portion movable upwardly with respect to an outer portion of said spindle means, a bracket rotatably supporting each roller, a pivot means pivotally attaching a radially outer portion of each bracket to the outer portion of the spindle means, a second pivot means pivotally attaching a radially inner portion of each bracket to said inner spindle portion whereby the upward movement of the inner spindle portion moves the rollers inwardly against caps on the container finishes, each of said pivot means including radially oriented slot means permitting the brackets to move radially outwardly of the spindle without tilting movement where non-circular container surfaces are encountered, resilient means urging the brackets radially inwardly of the spindles towards and against the caps with a contact force between each roller and the cap equal to the normal cap shaping force, cam means for determining the relative vertical positions of said spindles inner and outer portion, each of said rollers being rotatably attached to a bracket on an elongated shaft, means slidably containing each shaft on the bracket for axial movement, and resilient means positioned for yieldably positioning each shaft on its bracket.

Claim 7

In an improved roller sealing means for a container sealing machine having a sealing head including a spindle means with a plurality of rollers mounted thereon for sealing the containers by rolling metal closures onto the container top finishes and with means for providing relative rotation between the spindle and the container tops, the improvement comprising said spindle means having a vertically movable inner portion movable upwardly with respect to an outer portion of said spindle means, a bracket rotatably supporting each roller, a pivot means pivotally attaching a radially outer portion of each bracket to the outer portion of the spindle means, a second pivot means pivotally attaching a radially inner portion of each bracket to said inner spindle portion whereby the upward movement of the inner spindle portion moves the rollers inwardly against caps on the container finishes, each of said pivot means including radially oriented slot means permitting the brackets to move radially outwardly of the spindle without tilting movement where non-circular container surfaces are encountered, resilient means urging the brackets radially inwardly of the spindles towards and against the caps with a contact force between each roller and the cap equal to the normal cap shaping force, cam means for determining the relative vertical positions of said spindles inner and outer portion, each of said rollers being rotatably attached to a bracket on an elongated shaft, means slidably containing each shaft on the bracket for axial movement, and resilient means positioned for yieldably positioning each shaft on its bracket.

Claim 8

The roller sealing means as claimed in claim 5 in which said spindles are mounted on a rotary turret for movement about a stationary support in a circular path, a first elongated arcuate cam means being mounted on said support for controlling the vertical positions of said spindles, and a second elongated arcuate cam means being mounted on said support for controlling the vertical position of said spindle inner portion.