JOHN H COGSWELL
Engineering in Needham, MA

4466319, Aug 21, 1984

Dec 29, 1981

6/335505

John Cogswell - Needham MA
Robert F. Fokos - Wayland MA

Special Products Engineering Corporation - Needham MA

B26D 156, B26D 718

83116

A rotary cutter for a printing press directs a web between a knife cylinder and an opposed anvil cylinder. The outer surface of the knife cylinder mounts one or more knife blade assemblies each having a sandwich construction. Each assembly includes at least one and usually two blades separated by a spacer bar. The assembly also includes a perforator blade and an ejector bar located on opposite sides of the spacer bar and set in recesses formed on the sides of the spacer bar. The perforator blade has laterally spaced sets of chisel-like teeth that impale trim pieces cut by the blades. The ejector bar reciprocates radially within the assembly to remove the trim piece from the teeth. The assembly is held together by two sets of bolts that allow the location of the blades to be set independently. A set of half rings each carrying radially projecting locating dowels are nested in circumferential grooves formed in the knife cylinder. Each ring is aligned against locating pins mounted in the knife cylinder.

4463640, Aug 7, 1984

Dec 29, 1981

6/335506

John Cogswell - Needham MA
Robert F. Fokos - Wayland MA
Dale E. Alden - Chelmsford MA

Special Products Engineering Corporation - Needham MA

B26D 162, B27G 2300

83116

A rotary cutter for a printing press directs a web between a knife cylinder and an opposed anvil cylinder. The outer surface of the knife cylinder mounts one or more knife blade assemblies each having a sandwich construction. Each assembly includes at least one and usually two blades separated by a spacer bar. The assembly also includes a perforator blade and an ejector bar located on opposite sides of the spacer bar and set in recesses formed on the sides of the spacer bar. The perforator blade has laterally spaced sets of chisel-like teeth that impale trim pieces cut by the blades. The ejector bar reciprocates radially within the assembly to remove the trim piece from the teeth. The assembly is held together by two sets of bolts that allow the location of the blades to be set independently. A set of half rings each carrying radially projecting locating dowels are nested in circumferential grooves formed in the knife cylinder. Each ring is aligned against locating pins mounted in the knife cylinder.

4721504, Jan 26, 1988

Mar 4, 1986

6/835956

John Cogswell - Needham MA
Robert F. Fokos - Wayland MA

Sequa Corporation - New York NY

B31B 158

493440

Disclosed is an automatic paper folding apparatus and method for folding cut sheet paper products, whether single sheets or multiple plies as in a "signature" that is already folded by a printing press. The apparatus of the invention contains at least one pair of opposed belts which continuously grip the products and carry then through the apparatus. At least one set of freely rotatable rollers is arrayed along the direction of travel. Each belt has a flat paper-gripping surface, a longitudinal groove on the opposite surface that receives a guide roller, and at least one side surface that slopes away from the folding line. Each roller has a conical forming surface. The angle of inclination of the conical surfaces of the rollers in a set increases incrementally along the direction of travel. As the belts carry the sheets through the apparatus, they each engage the conical surfaces to fold the sheet against a belt with no substantial degree of relative movement between the sheets and either the belts or rollers. A first set of rollers folds the paper from 0. degree. to 90. degree.

4588393, May 13, 1986

May 24, 1983

6/497642

John Cogswell - Needham MA
Robert F. Fokos - Wayland MA

Sun Chemical Corporation - New York NY

B31B 158

493440

Disclosed is an automatic paper folding apparatus and method for folding cut sheet paper products, whether single sheets or multiple piles as in a "signature" that is already folded by a printing press. The apparatus of the invention contains at least one pair of opposed belts which continuously grip the products and carry them through the apparatus. At least one set of freely rotatable rollers is arrayed along the direction of travel. Each belt has a flat paper-gripping surface, a longitudinal groove on the opposite surface that receives a guide roller, and at least one side surface that slopes away from the folding line. Each roller has a conical forming surface. The angle of inclination of the conical surfaces of the rollers in a set increases incrementally along the direction of travel. As the belts carry the sheets through the apparatus, they each engage the conical surface to fold the sheet against a belt with no substantial degree of relative movement between the sheets and either the belts or rollers. A first set of rollers folds the paper from 0. degree. to 90. degree.