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Title: Mechanism for effecting interlock of multiple sheet continuous business forms
Claims: Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is: 1. Apparatus for interlocking the plies of an elongated, multiple-ply web moving along a path of travel for preventing significant relative longitudinal shifting between the plies, said apparatus comprising: first and second rotatable, die-supporting structures respectively located adjacent the opposed faces of said web and proximal to a common side margin of the latter; a plurality of circumferentially spaced interlock dies mounted on the peripheries of each of said first and second supporting structures to present respective, cooperating pairs of dies, each of said dies including a blade set having a plurality of spaced, side-by-side, web-shearing and displacing blades each provided with an elongated outer end extending between opposed narrow side margins thereof, the elongated direction of said outer ends of the blades being substantially transverse relative to the direction of travel of said web, each of said blades having a web penetrating outer web shearing and displacement section which projects above said side margins of the respective blade; means for rotating said structures in timed relationship for causing the blades of said respective pairs of dies to intermittently engage, cooperatively shear-penetrate and deform the moving web, with the blades of said respective die pairs interfitting during said web penetration and deformation, the blades of each cooperating die set being of a height to provide substantially equal support for the web with only said outer shearing and displacement sections thereof penetrating the web in order to create a series of transversely extending, adjacent, side-by-side, multiple ply, shear cut strips which are connected at the opposed ends thereof to the web, with adjacent strips being displaced substantially equal distances in opposite directions from the major plane of the web. 2. Apparatus as set forth in claim 1 wherein said die-supporting structures include first and second annular hubs, and elongated, rotatable first and second shafts respectively supporting the corresponding hubs. 3. Apparatus as set forth in claim 1 including linkage structure for allowing selective movement of said die-supporting structures between an operative position proximal to said web, and an open position with the die-supporting structures spaced from the web. 4. Apparatus as set forth in claim 1 wherein said blades on said dies each include at least one pointed tip defining said shearing and displacement section. 5. Apparatus as set forth in claim 1 wherein said blades on said dies each include a plurality of pointed tips defining said shearing and displacement section. 6. Apparatus as set forth in claim 1 wherein each of said dies is a unitary member and includes a block portion, with said blades extending from the block portion. 7. Apparatus as set forth in claim 1 including web-ironing means for press-ironing said moving web along the length thereof. 8. Apparatus as set forth in claim 7 wherein said web-ironing means comprises first and second ironing wheels respectively mounted on said die-supporting structures adjacent said dies. 9. Apparatus as set forth in claim 8 wherein said first and second ironing wheels are knurled. 10. Apparatus for interlocking the plies of an elongated web having spaced, parallel side marginal edges and which is moving longitudinally along a path of travel, for preventing significant relative shifting between the plies, said apparatus comprising: a pair of axially rotatable shafts respectively disposed in spaced relationship to the opposed faces of said web and substantially transversely relative to said path of travel; a pair of axially spaced, die-supporting hub members respectively mounted on each of said shafts adjacent the side marginal edges of said web, with the hubs on each shaft being substantially aligned with the hubs on the opposed shaft; a plurality of interlock dies for each hub respectively, each of said dies including a blade set having a plurality of spaced, side-by-side, web-shearing and displacing blades each provided with an elongated outer end extending between opposed narrow side margins thereof, each of said blades having a web penetrating outer tip which projects above said side margins of the respective blade; means mounting said dies in circumferentially spaced relationship on the corresponding hubs, with said blades extending outwardly therefrom and oriented with the elongated direction of said outer ends of the blades extending generally transversely relative to said path of travel and side marginal edges, for presenting two cooperating sets of opposed dies respectively adjacent the side margins of said web and with the latter located between the dies of each set, each of said sets including a number of respective, cooperating pairs of dies; and means for rotating said shafts in timed relationship for causing the blades of said respective pairs of dies in each set to intermittently engage, cooperatively shear-penetrate and deform the moving web at points adjacent the side margins of the latter, with the blade tips of said respective die pairs interfitting during said web penetration and deformation, and with the tips of the blade sets of each cooperating die in each respective pair thereof overlapping to an equal extent to provide substantially equal support for the web relative to the other cooperating die, only the tips of opposed blades penetrating the web in order to create two series of marginal, transversely extending, side-by-side, multiple-ply, shear-cut strips which are respectively connected at opposed ends thereof to the web, with adjacent strips in each series being displaced substantially equally in opposite directions relative to the major plane of the web. 11. Apparatus for interlocking the plies of a multiple-ply web moving along a path of travel, said apparatus comprising: at least one pair of opposed interlock dies respectively disposed adjacent the opposite faces of said web, each of said dies including a blade set having a plurality of spaced, side-by-side, web-shearing and displacing blades each having an elongated outer end extending between narrow side margins; means for supporting said dies with the blades thereof with the elongated direction generally transversely oriented relative to the direction of travel of said web; and each of said blades having a paper penetrating outer web shearing and displacement section which projects above said side margins of the respective blade; means for shifting at least one of the dies for causing the blades of said pair of dies to engage, shear-penetrate and deform said web with at least partial interfitting of the blades of the dies during said web penetration and deformation, the blades of said opposed die sets being of a height to provide substantially equal support for the web with only said outer shearing and displacement sections thereof penetrating the web in order to create a series of shear-cut interlocking strips which are connected at opposed ends to the web, with adjacent strips extending substantially an equal distance in opposite directions from the major plane of the web. 12. Apparatus as set forth in claim 11 wherein at least certain of said blades include an outermost, generally pointed, web-penetrating tip defining said shearing and displacement section. 13. Apparatus as set forth in claim 12 wherein at least certain of said blades include a plurality of spaced, generally pointed, web-penetrating tips defining said shearing and displacement section. 14. Apparatus as set forth in claim 11 wherein said die supporting and shifting means includes an annular, rotatable hub for each die respectively, and means mounting the respective dies on the corresponding hubs. 15. Apparatus as set forth in claim 14 including a plurality of circumferentially spaced interlock dies mounted on each hub. 16. Apparatus as set forth in claim 11 including web-ironing means for press-ironing said moving web. 17. A method of interlocking the plies of an elongated multiple-ply web moving along a path of travel, comprising the steps of: providing at least one pair of interlock dies including a blade set having a plurality of spaced, side-by-side web-shearing and displacing blades each provided with an elongated outer end extending between opposed narrow side margins thereof; supporting said dies in spaced relationship with said moving web therebetween and with the elongated direction of the outer ends of said blades being oriented generally transversely relative to the direction of travel of the web, each of said blades having a web penetrating outer web shearing and displacement section which projects above said side margins of the respective blade; shifting said dies along respective, arcuate paths, and causing the blade sets thereof to cooperatively engage, shear-penetrate and deform said web, and to at least partially interfit during said web penetration and deformation, the blades of each cooperating die being of a height to provide substantially equal support for the web with only the shearing and displacement sections penetrating the web in order to create a series of interlocking, transversely extending, adjacent strips in the web, with adjacent strips being displaced substantially equally in opposite directions from the major plane of the web. 18. The method as set forth in claim 17 including the step of locating said dies adjacent a common marginal edge of said web. 19. The method of claim 17 including the step of press-ironing said web by passing the same between a pair of opposed, rotating press elements. 20. The method of claim 17 wherein said blades include a single, generally pointed, web-penetrating tip defining said shearing and displacement section. 21. The method of claim 20 wherein said blades each include a pair of spaced, generally pointed, web-penetrating tips defining said shearing and displacement section and including the step of forming respective side-by-side series of said deformations in the web. Other info: Inventors: Gladow, Dean E. (Emporia, KS, US) Clifton, Kenneth C. (Emporia, KS, US) Application Number: 781669 Filing Date: 1977-03-28 Publication_date: 1978-09-19 Assignee: Didde-Glaser, Inc. (Emporia, KS) Primary Class(es): 270/37 83/872, 270/52.07, 462/4, 493/346, 493/351 Other Classes: US Patent Ref:
Other Refs:
Primary Examiner: Burr, Edgar S. Assistant Examiner: Heinz, A. Attorney: Schmidt, Johnson, Hovey & Williams |
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