Pivot assembly for mounting swingable operating mechanisms of a packaging machine

Claim 2

In a machine for operating on packages advanced along a predetermined path, the combination of, a support, a pivot arm swingably mounted on said support, a package operating device carried on said pivot arm and swingable with the latter laterally of said path from a home position and back, a power actuated driver mounted on said support for reciprocation through a stroke of preselected length from a home position and back, a link pivotally connected at one end to said driver to swing about a predetermined axis, a pivot connection pivotally coupling the other end of said link to said pivot arm to swing said operating device from its home position and back in response to reciprocation of said driver from its home position and back, and means mounting said pivot connection and said other end of said link for angular adjustment to different set positions on said arm along an arc which curves about said axis when said operating device and said driver are in their home positions thereby to enable adjustment of the length of the swinging stroke of said operating device without changing the length of the reciprocating stroke of said driver and while keeping the operating device swinging to its same home position during reciprocation of the driver.

Claim 3

A machine as defined in claim 1 in which said means comprise a slot formed in said pivot arm and curving arcuately about said axis when said operating device and said driver are in their home positions.

Claim 4

A machine as defined in claim 2 in which said pivot connection extends through said slot and is coupled pivotally to the other end of said link, and means for releasably anchoring said pivot connection to said arm in various set positions along said slot while enabling pivoting of said link relative to said arm.

Claim 5

In a machine for operating on packages advanced along a predetermined path, the combination of, a support, first and second generally oppositely extending pivot arms mounted on said support to swing about a fulcrum, first and second package operating devices carried on said pivot arms and spaced laterally of said fulcrum, said operating devices being disposed on opposite sides of said path and each being swingable with its respective arm and laterally of the path from a home position and back in unison with the other operating device, a power actuated driver mounted on said support for reciprocation through a stroke of preselected length from a home position and back, first and second links each having one end connected to said driver to swing about a pivot axis, pivot connections coupling the other ends of said links to said pivot arms to swing each operating device from its home position and back upon reciprocation of said driver from its home position and back, and means mounting each pivot connection for angular adjustment to different set positions on its respective arm along an arc which curves about the pivot axis of the respective link when the driver and the respective operating device are in their home positions thereby to enable changing of the distance between said fulcrum and each pivot connection and thus permit adjustment of the length of the swinging stroke of each operating device independently of the stroke of the other operating device withOut changing the length of the reciprocating stroke of said driver and while keeping the operating devices swinging to their same home positions during reciprocation of the driver.

Claim 6

In a machine for operating on packages advanced along a predetermined path, the combination of, a support, first and second generally oppositely extending pivot arms mounted on said support to swing about a fulcrum, first and second package operating devices carried on said pivot arms and spaced laterally of said fulcrum, said operating devices being disposed on opposite sides of said path and each being swingable with its respective arm and laterally of the path from a home position and back in unison with the other operating device, a power actuated driver mounted on said support for reciprocation through a stroke of preselected length from a home position and back, first and second links each having one end connected to said driver to swing about a pivot axis, pivot connections coupling the other ends of said links to said pivot arms to swing each operating device from its home position and back upon reciprocation of said driver from its home position and back, and means mounting each pivot connection for angular adjustment to different set positions on its respective arm along an arc which curves about the pivot axis of the respective link when the driver and the respective operating device are in their home positions thereby to enable changing of the distance between said fulcrum and each pivot connection and thus permit adjustment of the length of the swinging stroke of each operating device independently of the stroke of the other operating device withOut changing the length of the reciprocating stroke of said driver and while keeping the operating devices swinging to their same home positions during reciprocation of the driver.

Claim 7

In a machine for operating on packages advanced in an upright plane along a predetermined path, the combination of, a support, first and second pivot arms extending laterally of said path in opposite directions therefrom and mounted on said support to swing about a horizontal fulcrum centered on and extending parallel to said path, first and second package operating devices carried on said pivot arms and spaced laterally from said fulcrum, said operating devices being disposed on opposite sides of said path and each being swingable with its respective arm and laterally of the path from a home position and back in unison with the other operating device, a power driven cam rotatable about a horizontal axis centered on and extending parallel to said path, an upright driver operably connected to said cam for vertical reciprocation through a stroke of preselected length from a home position and back in response to rotation of said cam, first and second links each having one end pivotally connected to said driver to swing about a pivot axis, pivot connections pivotally coupling the other ends of said links to said pivot arms to swing each operating device from its home position and back upon reciprocation of said driver from its home position and back, and means mounting each pivot connection for angular adjustment to different set positions on its respective arm along an arc which curves about the pivot axis of the respective link when the driver and the respective operating device are in their home positions thereby to enable changing of the distance between said fulcrum and each pivot connection and thus permit adjustment of the length of the swinging stroke of each operating device independently of the stroke of the other operating device without changing the length of the reciprocating stroke of said driver and while keeping the operating devices swinging to their same home positions during reciprocation of the driver.

Claim 8

In a machine for operating on packages advanced in an upright plane along a predetermined path, the combination of, a support, first and second pivot arms extending laterally of said path in opposite directions therefrom and mounted on said support to swing about a horizontal fulcrum centered on and extending parallel to said path, first and second package operating devices carried on said pivot arms and spaced laterally from said fulcrum, said operating devices being disposed on opposite sides of said path and each being swingable with its respective arm and laterally of the path from a home position and back in unison with the other operating device, a power driven cam rotatable about a horizontal axis centered on and extending parallel to said path, an upright driver operably connected to said cam for vertical reciprocation through a stroke of preselected length from a home position and back in response to rotation of said cam, first and second links each having one end pivotally connected to said driver to swing about a pivot axis, pivot connections pivotally coupling the other ends of said links to said pivot arms to swing each operating device from its home position and back upon reciprocation of said driver from its home position and back, and means mounting each pivot connection for angular adjustment to different set positions on its respective arm along an arc which curves about the pivot axis of the respective link when the driver and the respective operating device are in their home positions thereby to enable changing of the distance between said fulcrum and each pivot connection and thus permit adjustment of the length of the swinging stroke of each operating device independently of the stroke of the other operating device without changing the length of the reciprocating stroke of said driver and while keeping the operating devices swinging to their same home positions during reciprocation of the driver.