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US 4,036,131 AGranted
Dampener
AssigneeHarris Corporation
InventorDonald Fenton Elmore
Life of this patent
Estimating the term…
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AssigneeHarris Corporation
InventorDonald Fenton Elmore
Estimating the term…
A dampener form roll has a wash-up position in which the dampener form roll is in fluid-transferring relationship with the ink form roll so that when wash-up fluid is applied to the ink form roll, it is transmitted to the dampener form roll, and thus effects a clean-up of the ink on the dampener form roll. A throw-off mechanism is provided for moving the dampener form roll between thrown-on and thrown-off positions, and that throw-off mechanism includes a motor having a reciprocating output member connected with a linkage for transmitting the motion of the output member to the dampener form roll. Means is located in the linkage for disabling the linkage so that it is disconnected, thus disconnecting the dampener form roll from the motor. A spring is provided for moving the dampener form roll to its wash-up position upon disconnection of the linkage. Further, the dampener form roll is gear driven through a gear train from the plate cylinder of the printing press and on movement to the wash-up position, one gear for driving the dampener form roll moves out of engagement with its cooperating gear so that the teeth thereof are out of meshing engagement.
Apparatus for use in a lithographic printing press having a plate cylinder for carrying a printing plate and an inker having at least one ink form roll for applying ink to the printing plate, said apparatus comprising a dampener form roll for applying dampening solution to the printing plate, said dampener form roll having a thrown-on position for transferring dampening solution to a plate, a thrown-off position out of dampener solution transferring relationship with a plate and a wash-up position in fluid-transmitting relation with an ink form roll of the inker, a throw-off mechanism for moving said dampener form roll between said thrown-on and thrown-off positions including a motor and a linkage mechanism interconnecting said motor and said dampener form roll, means in said linkage mechanism for selectively connecting or disconnecting said linkage mechanism, and at least one spring for moving said dampener form roll to said wash-up position upon disconnection of said linkage mechanism.
Apparatus comprising a plate cylinder for carrying a lithographic printing plate, an inker having at least one ink form roll for applying ink to the printing plate, a dampener form roll for applying dampening solution to the printing plate, said dampener form roll having a thrown-on position for transferring dampening solution to a plate, a thrown-off position out of dampener solution transferring relationship with a plate and a wash-up position in fluid-transmitting relation with an ink form roll of the inker, a throw-off mechanism for moving said dampener form roll between said thrown-on and thrown-off positions including a motor and a linkage mechanism interconnecting said motor and said dampener form roll, means in said linkage mechanism for selectively connecting or disconnecting said linkage mechanism, drive means for rotating said dampener form roll including a pair of meshing gears, one of which is connected with said dampener form roll and moves therewith upon movement of said form roll between said positions, and at least one spring for moving said dampener form roll to said wash-up position upon disconnection of said linkage mechanism and for moving said gears out of meshing engagement when said dampener form roll is moved to its wash-up position.
Apparatus for use in a lithographic printing press having a plate cylinder for carrying a printing plate and an inker having at least one ink form roll for applying ink to the printing plate, said apparatus comprising a dampener form roll for applying dampening solution to the printing plate, said dampener form roll having a thrown-on position for transferring dampening solution to a plate, a thrown-off position out of dampener solution transferring relationship with a plate and a wash-up position in fluid-transmitting relation with an ink form roll of the inker, a throw-off mechanism for moving said dampener form roll between said thrown-on and thrown-off positions including a motor and a linkage mechanism interconnecting said motor and said dampener form roll, means in said linkage mechanism for selectively connecting or disconnecting said linkage mechanism, at least one spring for moving said dampener form roll to said wash up position upon disconnection of said linkage mechanism, and drive means for rotating said dampener form roll including a pair of meshing gears, one of which is connected with said dampener form roll and moves therewith, and said spring acts to move said gears out of meshing engagement when said dampener form roll is moved to its wash-up position.
Apparatus for use in a lithographic printing press having a plate cylinder for carrying a printing plate and an inker having at least one ink form roll for applying ink to the printing plate, said apparatus comprising a dampener form roll for applying dampening solution to the printing plate, said dampener form roll having a thrown-on position for transferring dampening solution to a plate, a thrown-off position out of dampener solution transferring relationship with a plate and a wash-up position in fluid-transmitting relation with an ink form roll of the inker, a throw-off mechanism for moving said dampener form roll between said thrown-on and thrown-off positions including a motor and a linkage mechanism interconnecting said motor and said dampener form roll, means in said linkage mechanism for selectively connecting or disconnecting said linkage mechanism, and at least one spring for moving said dampener form roll to said wash-up position upon disconnection of said linkage mechanism, said motor having a reciprocable output member connected with said linkage mechanism, said linkage mechanism including a link associated with said output member and a rotatable shaft, said means for selectively connecting or disconnecting said linkage mechanism comprises means for releasably connecting said link and said shaft, said link and said shaft having openings therein and said means for selectively connecting or disconnecting said link and shaft comprises a pin extending through said openings to connect said link and shaft and which is movable from said openings to disconnect said linkage mechanism.
Dependencies are inferred from the claim text.