Multiple set pressure sealer rollers
AssigneeMoore Business Forms, Inc.
InventorsRichard S. Downing, Daniel F. Pustelnik
Life of this patent
Estimating the term…
Abstract
Pressure sealing of business forms is effected utilizing first and second sets of (preferably narrow-width) rollers forming first and second nips which provide a sealing force to business forms passing between them. The first set of rollers are rotatable about first and second axes, typically horizontal, while the second set of rollers are rotatable about third and fourth axes. The third and fourth axes are substantially perpendicular to the first and second axes, and may be horizontal or vertical. The first set is typically provided above the second set, and a conveyor may be provided for conveying forms which drop from the first set into operative association with the second set.
Claims13
A pressure applying apparatus for applying pressure to business forms to activate pressure sensitive adhesive associated with the forms to seal one part of a form to another, comprising:
- a first set of rollers rotatable about parallel first and second axes and biased together to form a first nip;
- first reversible drive means for driving at least one of said rollers alternately clockwise and counterclockwise;
- first sensor means for sensing the position of a business form with respect to said first and second rollers;
- a second set of rollers rotatable about parallel third and fourth axes, and biased together to form a second nip;
- second reversible drive means for driving at least said second set of rollers alternately clockwise and counterclockwise;
- second sensor means for sensing the position of a business form with respect to said second set of rollers;
- said third and fourth axes being disposed substantially perpendicular to said first and second axes, said first and second axes being substantially horizontal, and said third and fourth axes being substantially vertical;
- and
- control means connected to said first and second sensor means and said first and second reversible drive means for driving a business form sensed by said sensor means through said first nip in a first direction so that compression sealing force is applied thereto, and after the business form has passed almost completely through the first nip, in a second direction, reversing said first drive means to drive the business form through said first nip again in a second direction, opposite the first direction;
- then for driving a business form sensed by said second sensor and through said second nip in a third direction, so that compression sealing force is applied thereto, and after the business form has passed almost completely through said second nip in a third direction, reversing said second drive means to drive the business form through said second nip again in a fourth direction, opposite the third direction.
A pressure applying apparatus for applying pressure to business forms to activate pressure sensitive adhesive associated with the forms to seal one part of a form to another, comprising:
- a first set of rollers rotatable about parallel first and second axes and biased together to form a first nip;
- first reversible drive means for driving at least one of said rollers alternately clockwise and counterclockwise;
- first sensor means for sensing the position of a business form with respect to said first and second rollers;
- a second set of rollers rotatable about parallel third and fourth axes, and biased together to form a second nip;
- second reversible drive means for driving at least said second set of rollers alternately clockwise and counterclockwise;
- second sensor means for sensing the position of a business form with respect to said second set of rollers;
- said third and fourth axes being disposed substantially perpendicular to said first and second axes;
- control means connected to said first and second sensor means and said first and second reversible drive means for driving a business form sensed by said sensor means through said first nip in a first direction so that compression sealing force is applied thereto, and after the business form has passed almost completely through the first nip, in a second direction, reversing said first drive means to drive the business form through said first nip again in a second direction, opposite the first direction;
- then for driving a business form sensed by said second sensor and through said second nip in a third direction, so that compression sealing force is applied thereto, and after the business form has passed almost completely through said second nip in a third direction, reversing said second drive means to drive the business form through said second nip again in a fourth direction, opposite the third direction;
- means for mounting said first set of rollers vertically above said second set of rollers;
- and
- conveyor means for conveying business forms discharged from said first set of rollers to a position whereby they may be conveyed by said second set of rollers, said conveyor means being controlled by a reversible motor;
- and wherein said control means controls said reversible motor to drive the business forms in the third and fourth directions.
Dependencies are inferred from the claim text.