Patents Assigned to Worldwide Converting Machinery
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Patent number: 5125170Abstract: A flotation dryer nozzle in which respective outer narrow nozzle openings are formed at the edges of the side of the nozzle facing the web to be dried and respective wider nozzle openings are formed in the nozzle side facing the web inwardly of the narrow nozzle openings and in which respective pressure reduction regions are formed between the inside of the nozzle body and the wider nozzle openings.Type: GrantFiled: April 11, 1990Date of Patent: June 30, 1992Assignee: Worldwide Converting MachineryInventors: Leonard C. Krimsky, Richard A. McCarthy, William P. Rounds
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Patent number: 5103898Abstract: A pull roll in which the outer shell of a cooling roll through which a cooling medium flows has grooves in its outer surface forming lands which support a perforated skin. Communication is provided between the shell grooves and a segmented stator groove connected to a source of reduced pressure so that the vacuum exerts a pull on the web while the cooling medium cools the web through the skin.Type: GrantFiled: July 11, 1990Date of Patent: April 14, 1992Assignee: Worldwide Converting MachineryInventor: Leonard C. Krimsky
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Patent number: 4948061Abstract: A turret unwinder in which a carriage mounted on the turret for movement between limit positions respectively adjacent first and second diametrically opposite winding axes supports a bumper roll for movement from a neutral position to respective fired positions in engagement with rolls on the winding axes and first and second knife bars adapted to be fired respectively to sever webs being unwound from rolls on the two axes.Type: GrantFiled: August 29, 1988Date of Patent: August 14, 1990Assignee: Worldwide Converting MachineryInventors: Leonard C. Krimsky, Henk Van Rietschoten
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Patent number: 4889072Abstract: Apparatus for applying a thin coating to a web in which the outer end of a die assembly is moved into interfering relationship with the outer elastomeric position of a backing roll so that coating material supplied to said die assembly pocket of coating material covering a discharge orifice in the outer end of the die assembly.Type: GrantFiled: April 18, 1989Date of Patent: December 26, 1989Assignee: Worldwide Converting MachineryInventor: Leonard C. Krimsky
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Patent number: 4601116Abstract: A Coanda dryer nozzle unit in which a nozzle opening formed in a plenum chamber just below and extending along one edge of a wall of the chamber parallel to the web to be dried is connected to the upper surface of the wall by a curved surface to produce a Coanda flow of air over the curved surface and along the upper surface of the wall. A lip along the other edge of the wall has a curved surface which directs the airflow upwardly toward the web and produces a pad of air between the web and the wall.Type: GrantFiled: May 16, 1985Date of Patent: July 22, 1986Assignee: Worldwide Converting Machinery, Inc.Inventor: Leonard C. Krimsky
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Patent number: 4530265Abstract: An improved rotary knife assembly for severing a moving web in which a support is mounted on a frame for rotary movement around a first axis, and a knife blade is mounted on the support for rotary movement around a second axis generally parallel to and spaced from the first axis. The knife blade is adapted to move from a first position remote from the web to a second position at which it engages and severs the web. Means are provided for concomitantly driving the support and the blade around the axes to move the blade from the first position through the second position and back to the first position.Type: GrantFiled: November 3, 1982Date of Patent: July 23, 1985Assignee: Worldwide Converting Machinery, Inc.Inventors: Frank X. Lee, Leonard C. Krimsky, Henk Van Rietschoten
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Patent number: 4256270Abstract: A tension control system for an unwinder in which a mechanical differential continuously couples to the roll mandrel an unwinding torque which is at least equal to the torque necessary to overcome the friction in the system.Type: GrantFiled: August 6, 1979Date of Patent: March 17, 1981Assignee: Worldwide Converting Machinery, Inc.Inventors: Frank X. Lee, Leonard C. Krimsky
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Patent number: 4102511Abstract: An improved turret for use in winding and unwinding operations in which each of the arms of two pairs of generally diametrically oppositely extending roll supporting arms is eccentrically mounted on the cross-shaft by linear bearings which permit rolling movement of an arm axially of the cross-shaft while constraining the arm to rotate with the shaft. Respective independently operable means associated with each pairs of arms permit the arms of a pair to be moved concomitantly axially toward or away from each other to accommodate different roll widths. Other independently operable means permit the arms of a pair to be moved together axially from side to side to adjust side lay of the web being handled.Type: GrantFiled: December 11, 1975Date of Patent: July 25, 1978Assignee: Worldwide Converting Machinery, Inc.Inventors: Leonard C. Krimsky, Henk Van Rietschoten
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Patent number: 3944151Abstract: The invention relates to an alternate side web splicing apparatus in which a bumper roll and a knife roll supported on a frame are adapted successively to be fired in the same direction from ready positions to perform an undersplice and in which means is provided for automatically changing the ready position of the knife roll while properly orienting the blade thereof and for firing the bumper roll and the knife roll in the opposite direction to perform an oversplice.Type: GrantFiled: February 3, 1975Date of Patent: March 16, 1976Assignee: Worldwide Converting Machinery, Inc.Inventors: Frank X. Lee, Leonard C. Krimsky, Donald R. Freytag