Claims
- 1. A method of evaporating liquid from the surface of a roller which rotates about an axis in a printing press comprising the steps of: rotating a roller; supporting fan means having blade means extending longitudinally of substantially the entire length of the roller such that ends of the blade means are positioned adjacent opposite ends of the roller in the printing press; and coupling the fan means such that rotation of the roller imparts force to drive the blade means such that the speed of rotation of the blade means changes when the speed of rotation of the roller changes.
- 2. A method according to claim 1, the step of coupling the fan means such that rotation of the roller imparts force to drive the blade means comprising: providing a drive pulley to rotate with the roller; providing a driven pulley to rotate with the blade means; and mounting a belt on the drive pulley and the driven pulley such that the belt imparts force to the driven pulley for rotating the elongated blade means.
- 3. A method according to claim 1, the step of supporting fan means comprising the steps of: mounting a transflow blower having elongated blades for rotation about a longitudinal axis which is spaced from and parallel to an axis about which the roller in the printing press rotates and such that opposite ends of the elongated transflow blower are positioned adjacent opposite ends of the roller to draw and deliver air transversely of the roller while minimizing air flow in a direction parallel to the axis of the transflow blower.
- 4. A dampening fluid evaporator adapted to be mounted to evaporate dampening fluid from a roller rotatable about a roller axis in a lithographic printing press comprising: an elongated transflow blower having elongated blades, a longitudinal axis and spaced ends; mounting means to mount said transflow blower adjacent the roller in a lithographic printing press, said mounting means being adapted to position opposite ends of said blower adjacent opposite ends of the roller such that said elongated blades extend generally parallel to the roller axis; and drive means to rotate said transflow blower to draw air transversely of said blower, along substantially the entire length of the roller, and to deliver air toward the roller to evaporate dampening fluid from the roller.
- 5. A dampening fluid evaporator for a lithographic printing press according to claim 4, said drive means to rotate said transflow blower comprising: a drive member adapted to be operably connected to the roller; a driven member operably connected to said transflow blower; and elongated flexible drive means driven by said drive member for impairing force to said driven member.
- 6. A dampening fluid evaporator for a lithographic printing press according to claim 5, said drive member and said driven member comprising: pulleys, and wherein said elongated flexible drive means comprises a drive belt.
- 7. A dampening fluid evaporator for a lithographic printing press according to claim 5, said mounting means to mount said transflow blower adjacent a roller in a lithographic printing press comprising: a blower housing having a length substantially equal to the length of the roller; means rotatably securing said transflow blower in said blower housing; and means to mount said blower housing in a printing press such that opposite ends of said blower housing are positioned adjacent opposite ends of the roller.
- 8. A dampening fluid evaporator for a lithographic printing press according to claim 7, said mounting means to mount said blower housing comprising: a mounting plate, and means to secure said mounting plate relative to an inker side frame.
- 9. A dampening fluid evaporator adapted to be mounted on a lithographic printing press to evaporate dampening fluid carried on the surface of a roller rotating about a roller axis comprising: a blower housing having an elongated intake opening and an elongated discharge opening; an elongated transflow blower in said housing having a longitudinal blower axis; means to mount said housing and said transflow blower adjacent the roller in a lithographic printing press such that said blower axis and the roller axis are substantially parallel; and an electric motor to rotate said transflow blower to draw air through said elongated intake opening along substantially the entire length of the roller and to deliver air through said elongated discharge opening toward the surface of the roller along substantially the entire length of the roller to evaporate dampening fluid from the surface of the roller.
- 10. A lithographic printing press comprising: a pair of press side frames; a plate cylinder rotatably secured between said press side frames; a printing plate secured to said plate cylinder; a plurality of form rollers rotatably secured between said side frames and positioned to apply ink to said printing plate; a plurality of vibrator rollers rotatably secured between said press side frames and mounted in rolling engagement with said form rollers; at least one ink distributor roller rotatably mounted between said press side frames and in rolling relation with at least one of said vibrator rollers; transflow blower means having an elongated intake passage extending longitudinally of said distributor roller; means mounting said transflow blower means such that opposite ends of said intake passage are positioned adjacent opposite ends of said distributor roller; and drive means rotating said transflow blower means for delivering air to evaporate liquid carried on said distributor roller.
- 11. A lithographic printing press according to claim 10, said drive means comprising: an electric motor.
- 12. A lithographic printing press according to claim 10, said transflow blower means comprising: a blower housing having an inlet passage and an outlet passage formed therein; and a fan in said blower housing constructed and arranged to draw air from adjacent said distribution roller along the length of said distributor roller into said blower housing and to dispense a stream of diffused air to impinge against said distributor roller for evaporating liquid from said distributor roller.
- 13. A printing press according to claim 12, with the addition of: U-clamps secured to said blower housing to support said blower between said press side frames.
- 14. A printing press according to claim 12, said transflow blower comprising: a plurality of blades, each of said blades having a tip and a heel; a pair of solid end shrouds; means mounting said blades between said end shrouds such that the tip of each blade points in the direction of rotation and such that the heel of each blade is positioned circumferentially rearwardly of said blade tip to form forwardly curved blades.
- 15. A lithographic printing press comprising: a pair of press side frames; inker means supported by said press side frames; printing means adjacent said inker means; dampener means associated with said inker means for delivering ink and dampening fluid to said printing means, said inker means including distributor roller means; an elongated transflow blower having a longitudinal axis; a blower housing having elongated inlet and outlet passages; means rotatably securing said transflow blower in said blower housing; means securing said blower housing relative to press side frames such that said elongated inlet and outlet passages into said transflow blower housing are positioned adjacent distributor roller; and drive means to rotate said transflow blower to deliver air directly from said elongated outlet passage onto said distributor roller along the length of said distributor roller to evaporate dampening fluid.
- 16. A lithographic printing press comprising: a pair of press side frames; a plate cylinder rotatably secured between said side frames; a printing plate secured to said plate cylinder; a plurality of form rollers rotatably secured between said side frames and positioned to apply ink to said printing plate; a plurality of vibrator rollers rotatably secured between said side frames and mounted in rolling engagement with said form rollers; at least one ink distributor roller rotatably mounted between said side frames and in rolling relation with at least one of said vibrator rollers; a blower housing having an inlet passage and an outlet passage formed therein; means secured to said blower housing to support said blower housing to the printing press; blower means in said blower housing constructed and arranged to draw air from adjacent substantially the entire length of said roller surface into said blower housing and to dispense a stream of diffused air directly from said housing to impinge against the roller surface along substantially the entire length of the roller for evaporating liquid from the surface of the roller, said blower being mounted for rotation about a longitudinal axis between said side frames; and an electric motor rotating said transflow blower for delivering air to evaporate liquid carried on the surface of said distributor roller.
Parent Case Info
This is a continuation of application Ser. No. 07/165,519 filed 03/08/88, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (5)
Number |
Date |
Country |
925116 |
Mar 1955 |
DEX |
929612 |
Jun 1955 |
DEX |
2658875 |
Jun 1978 |
DEX |
461042 |
Jan 1951 |
ITX |
256858 |
Sep 1948 |
SEX |
Non-Patent Literature Citations (1)
Entry |
Dayton Transflow Blower Model 4C874-Operating Instructions and Parts Manual-Form 5S2814-Dayton Electric Manufacturing Co. |
Continuations (1)
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Number |
Date |
Country |
Parent |
165519 |
Mar 1988 |
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