Claims
- 1. A method of perforating a web of business forms, utilizing first and second substantially continuous circumference perforator wheels operatively spaced from each other along a predetermined web path, and first and second anvil cylinders also operatively spaced from each other along the web path and each having a raised circumferential portion and a depressed circumferential portion, the raised portions for cooperating with the perforator wheels to perforate the web, said method comprising the steps of:
- (a) moving the web in a first direction along the predetermined web path;
- (b) selectively automatically moving the anvil cylinders from a first position in which no circumferential portion of the anvil cylinders engages the web, to a second position in which the raised circumferential portions of the cylinders may engage the web and cooperate with the perforator wheels to effect perforation of the web substantially parallel to the first direction;
- (c) rotating the anvil cylinders so that a point on the circumferential portions of the anvil cylinders moves tangentially in the first direction synchronously with the movement of the web in the first direction; and
- (d) selectively automatically moving the anvil cylinders from the second position to the first position thereof.
- 2. A method as recited in claim 1 wherein steps (b) and (d) are practiced so as to move the centerline of each anvil cylinder and the centerline of its associated perforator wheel into alignment and perpendicular to the web in the second position.
- 3. A method as recited in claim 2 wherein steps (b) and (d) are practiced in response to electrical signals from a computer control.
- 4. A method as recited in claim 1 further comprising the step of effecting minor adjustment of the axes of the perforator wheels with respect to the predetermined web path to provide wheel pressure adjustment.
- 5. A method as recited in claim 1 wherein steps (b) and (d) are practiced in response to electrical signals from a computer control.
- 6. A method as recited in claim 1 wherein at least one of the anvil cylinders is mounted in an eccentric bearing housing; and wherein steps (b) and (d) for the at least one anvil cylinder having the eccentric bearing housing is practiced by rotating the eccentric bearing housing between about 15-25 degrees to move the cylinder between the first and second positions.
- 7. A method as recited in claim 1 further comprising the step of effecting minor adjustment of the axes of the perforator wheels with respect to the predetermined web path to provide wheel pressure adjustment.
- 8. A method of perforating a web of business forms, utilizing first and second substantially continuous circumference perforator wheels operatively spaced from each other along a predetermined web path, and first and second anvil cylinders also operatively spaced from each other along the web path and each having a raised circumferential portion and a depressed circumferential portion, the raised portions for cooperating with the perforator wheels to perforate the web, said method comprising the steps of:
- (a) moving the web in a first direction along the predetermined web path;
- (b) selectively automatically moving the anvil cylinders from a first position in which no circumferential portion of the anvil cylinders engages the web, to a second position in which the raised circumferential portions of the cylinders may engage the web and cooperate with the perforator wheels to effect perforation of the web substantially parallel to the first direction;
- (c) rotating the anvil cylinders so that a point on the circumferential portions of the cylinders moves tangentially in the first direction synchronously with the movement of the web in the first direction; and
- (d) selectively automatically moving the anvil cylinders from the second position to the first position thereof; and
- wherein the wheels and cylinders are spaced from each other along the predetermined path a distance yx where x is the length of a form of the web along the predetermined path and y is a positive whole number; and wherein the circumference of each of the raised portions of the anvil cylinder and an imaginary extension thereof overlying the depressed circumferential portion is equal to 2x; and
- wherein steps (a)-(d) are practiced to perforate substantially every other form in the web with the first perforation wheel and cylinder, and perforate substantially each form in the web not perforated by the first perforator wheel and cylinder with the second perforator wheel and cylinder.
- 9. A method as recited in claim 8 wherein steps (b) and (d) are practiced so as to move the centerline of each anvil cylinder and the centerline of its associated perforator wheel into alignment and perpendicular to the web in the second position.
- 10. A method as recited in claim 9 wherein steps (b) and (d) are practiced in response to electrical signals from a computer control.
- 11. A method as recited in claim 9 further comprising the step of effecting minor adjustment of the axes of the perforator wheels with respect to the predetermined web path to provide wheel pressure adjustment.
- 12. A method as recited in claim 8 wherein steps (b) and (d) are practiced in response to electrical signals from a computer control.
- 13. A method as recited in claim 8 wherein at least one of the anvil cylinders is mounted in an eccentric bearing housing; and wherein steps (b) and (d) for the at least one anvil cylinder having the eccentric bearing housing is practiced by rotating the eccentric bearing housing between about 15-25 degrees to move the cylinder between the first and second positions.
- 14. A method as recited in claim 8 further comprising the step of effecting minor adjustment of the axes of the perforator wheels with respect to the predetermined web path to provide wheel pressure adjustment.
Parent Case Info
This is a continuation of application Ser. No. 08/864,858, filed May 29, 1997, now pending.
US Referenced Citations (17)
Foreign Referenced Citations (7)
Number |
Date |
Country |
040 183 |
Nov 1961 |
EPX |
138 422 |
Apr 1985 |
EPX |
208 077 |
Jan 1987 |
EPX |
723 86 |
Jul 1996 |
EPX |
739 731 |
Oct 1996 |
EPX |
2 203 088 |
Oct 1988 |
GBX |
WO 97 23398 |
Jul 1997 |
WOX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
864858 |
May 1997 |
|