US3768801A — Apparatus and method for making multiple ply sets

Claim 1

Independent Claim 229 words

Method of manufacturing from a plurality of webs a multiple ply set in which each ply of the set has a primary portion and a discardable portion, comprising the steps of: performing with a single set of tools concurrently on a group of webs while they are in superposed relation a selected work operation to produce a manifestation actually desired in only some of the webs of the group, directing at least one of the webs of the group into a path of different length than that of the others, and then remerging them to cause the manifestation of the work operation in each such one web to become displaced a preselected amount relative to that in the other webs, transversely scoring the remerged webs concurrently with a single set of tools to create one transverse boundary between the primary portion and discardable portion, and transversely severing the remerged webs concurrently with another single set of tools to cut the webs into discrete sets of superposed plies along a line defining the other boundary between said primary and discardable portions in succeeding discrete sets, the particular webs so displaced and said preselected amount of displacement being such as to cause the manifestation to be present in the primary portion in those plies where it is desired and in the discardable portion in the remaining plies where it is tolerable.

Claim 2

Dependent Claim 229 words

Method of manufacturing from a plurality of webs a multiple ply set in which each ply of the set has a primary portion and a discardable portion, comprising the steps of: performing with a single set of tools concurrently on a group of webs while they are in superposed relation a selected work operation to produce a manifestation actually desired in only some of the webs of the group, directing at least one of the webs of the group into a path of different length than that of the others, and then remerging them to cause the manifestation of the work operation in each such one web to become displaced a preselected amount relative to that in the other webs, transversely scoring the remerged webs concurrently with a single set of tools to create one transverse boundary between the primary portion and discardable portion, and transversely severing the remerged webs concurrently with another single set of tools to cut the webs into discrete sets of superposed plies along a line defining the other boundary between said primary and discardable portions in succeeding discrete sets, the particular webs so displaced and said preselected amount of displacement being such as to cause the manifestation to be present in the primary portion in those plies where it is desired and in the discardable portion in the remaining plies where it is tolerable.

Claim 3

Dependent Claim 98 words

The method according to claim 1, wherein the work operation is performed on said group at any of a plurality of locations displaced longitudinally along the web feed path, one location selected to cause the manifestation to appear in the primary portion of the plies severed from the non-displaced webs, and in the discardable portion of the plies severed from the displaced webs, and another location selected to cause the manifestation to appear in the discardable portion of the plies severed from the non-displaced webs, and in the primary portion of the plies severed from the displaced webs.

Claim 4

Dependent Claim 51 words

The method according to claim 1, including the step of providing tooling that is prepositionable into different combinations of rotative positions to perform any one of a plurality of different selectable additional work operations on at least some of the webs while they are directed into such paths of different length.

Claim 5

Dependent Claim 225 words

Apparatus for manufacturing from a plurality of webs discrete multiple ply sets in which each ply of the set comprises a primary portion and a discardable portion, said apparatus comprising means for performing at least one selected work operation concurrently on a group of the webs while they are in superposed relation, means for thereafter directing at least a certain web of the group along a paTh of a length different from that of others of the group to cause the manifestations of the work operations in such certain web to be longitudinally displaced a predetermined amount relative to that in said others, means for thereafter remerging the webs into super-posed relation, means for scoring the webs concurrently in a direction generally transversely of the web feed direction to create a line of demarcation between the primary and discardable portions and, through such longitudinal displacement of each such certain web, cause the manifestation to be physically present at one side of such line in each such certain web and at the other side of such line in the other webs, and means for thereafter severing the webs into discrete sets of superposed plies, such that the manifestation of the work operation will be present in one of the portions of each such certain web and be present in the other portion of each other web.

Claim 6

Dependent Claim 225 words

Apparatus for manufacturing from a plurality of webs discrete multiple ply sets in which each ply of the set comprises a primary portion and a discardable portion, said apparatus comprising means for performing at least one selected work operation concurrently on a group of the webs while they are in superposed relation, means for thereafter directing at least a certain web of the group along a paTh of a length different from that of others of the group to cause the manifestations of the work operations in such certain web to be longitudinally displaced a predetermined amount relative to that in said others, means for thereafter remerging the webs into super-posed relation, means for scoring the webs concurrently in a direction generally transversely of the web feed direction to create a line of demarcation between the primary and discardable portions and, through such longitudinal displacement of each such certain web, cause the manifestation to be physically present at one side of such line in each such certain web and at the other side of such line in the other webs, and means for thereafter severing the webs into discrete sets of superposed plies, such that the manifestation of the work operation will be present in one of the portions of each such certain web and be present in the other portion of each other web.

Claim 7

Dependent Claim 54 words

Apparatus according to claim 4, including means for drawing all the webs through the apparatus at a predetermined constant speed, and tendency rolls in each such path driven at about 5 percent less than said constant speed to maintain each web under a desired minimum degree of tension to minimize variation in running registration.

Claim 8

Dependent Claim 68 words

Apparatus according to claim 4, wherein at least one pair of rotary tool cylinders are disposed at opposite sides of at least one of said webs, at least one such cylinder being independently orientable in a predetermined number of rotative positions to provide a plurality of different selectable combinations of rotative positions for performing correspondingly different work operations from one side or the other side of such web.

Claim 9

Dependent Claim 56 words

Apparatus according to claim 6, wherein at least one of the tool cylinders of each pair has relieved portions that in one of said combination of rotative positions is positioned opposite a blade member carried by the other cylinder to provide a clearance gap at the nip sufficient to enable passage of the web without scoring.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-10-29	1977-04-30	1977-10-30	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-10-29	1981-04-30	1981-10-30	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-10-29	1985-04-30	1985-10-30	$7700.00	Window Closed / Lapsed

Apparatus and method for making multiple ply sets

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