Mounting of the impression cylinder of an intaglio press

Claim 2

In combination in an intaglio printing press, having a frame, means mounting the shafts of a sheet transfer drum, impression cylinder and delivery drum in a straight line in said frame, means mounting the shaft of a plate cylinder in the frame on a second straight line passing through the center of the shaft of the impression cylinder and perpendicular to the first-mentioned straight line, said means mounting the shaft of the impression cylinder including means for moving the impression cylinder for throw-on and throwoff movement in said second straight line approximately perpendicular to said first straight line, said means mounting the shaft of the impression cylinder in the frame being a sliding block in the frame at each end of the impression cylinder and power means connected to the sliding blocks for moving the impression cylinder to throw-on and throwoff positions, said frame having spaced-apart portions in side frames thereof providing slots for means adjustably mounting said sliding blocks therewithin whereby the blocks are indirectly mounteD in the press side frames, said sliding blocks having oppositely disposed recesses extending parallel to the direction of movement of said sliding blocks, said frames of the press frame having recesses therein adjacent the recesses in the sliding blocks and parallel thereto, and bars adjustably mounted in said recesses in the frame and protruding into said adjacent recesses in the sliding blocks whereby the sliding blocks are fixed in axial and radial direction.

Claim 3

An intaglio press having, in combination, a frame, an impression cylinder having gripper means thereon and sheet feed and delivery drums having gripper means thereon, means mounting said impression cylinder in the frame and means mounting said drums in said frame at opposite sides of the impression cylinder with the axes of said impression cylinder and drums extending parallel to each other and lying on a straight line for sheet feeding, printing and delivery, said impression cylinder having a center shaft coinciding with the cylinder axis, said frame having slots at each end extending perpendicular to said straight line joining the axes of the impression cylinder and drums, said means mounting said impression cylinder and its center shaft in said frame being slidably received in said slots for movement perpendicular to said straight line, an intaglio cylinder having associated inking means and a center shaft mounted in said frame below said impression cylinder with the axis of its center shaft extending parallel to the center shaft of said impression cylinder and lying in a plane extending perpendicular to said straight line at the center shaft of said impression cylinder, an operating lever arm for said mounting means of the impression cylinder received in said slots in the frame and pivotally mounted at one end on said frame and having means intermediate its ends connecting it with said mounting means in the slots for moving the same and the impression cylinder perpendicular to said straight line away from and toward said intaglio cylinder, and yieldable operating means connected adjacent the other end of the lever for moving the same.

Claim 4

An intaglio press having, in combination, a frame, an impression cylinder having gripper means thereon and sheet feed and delivery drums having gripper means thereon, means mounting said impression cylinder in the frame and means mounting said drums in said frame at opposite sides of the impression cylinder with the axes of said impression cylinder and drums extending parallel to each other and lying on a straight line for sheet feeding, printing and delivery, said impression cylinder having a center shaft coinciding with the cylinder axis, said frame having slots at each end extending perpendicular to said straight line joining the axes of the impression cylinder and drums, said means mounting said impression cylinder and its center shaft in said frame being slidably received in said slots for movement perpendicular to said straight line, an intaglio cylinder having associated inking means and a center shaft mounted in said frame below said impression cylinder with the axis of its center shaft extending parallel to the center shaft of said impression cylinder and lying in a plane extending perpendicular to said straight line at the center shaft of said impression cylinder, an operating lever arm for said mounting means of the impression cylinder received in said slots in the frame and pivotally mounted at one end on said frame and having means intermediate its ends connecting it with said mounting means in the slots for moving the same and the impression cylinder perpendicular to said straight line away from and toward said intaglio cylinder, and yieldable operating means connected adjacent the other end of the lever for moving the same.

Claim 5

An intaglio press according to claim 2 wherein said yieldable operating means are hydraulic means.

Claim 6

An intaglio press according to claim 2 wherein said slots in the frame are formed by parallel spaced-apart walls in the frame, said means mounting the impression cylinder and its center shaft in the frame being a sliding block received in said slots.

Claim 7

An intaglio press according to claim 4 including adjusting means in the slots in the frame cooperating with each sliding block for limiting the travel of said sliding block and said impression cylinder toward said intaglio cylinder and the respective desired distance between said impression and intaglio cylinder.

Claim 8

An intaglio press according to claim 4 wherein said sliding blocks have oppositely disposed recesses extending parallel to the direction of movement of said sliding blocks, said walls in the frame forming the slots having recesses therein extending into said frame adjacent the recesses in the sliding blocks, and bars having means adjustably mounting them in said recesses in the frame and protruding into said adjacent recesses in the sliding blocks whereby the sliding blocks are fixed in axial and radial direction.

Claim 9

An intaglio press according to claim 2 wherein said impression cylinder is of double size having two printing surfaces and said grippers comprise two sets.

Claim 10

An intaglio press according to claim 7 wherein said intaglio cylinder is of double size having two in circumference ink transfer areas.

Claim 11

An intaglio press according to claim 2 wherein, said slots in the frame are formed by parallel spaced-apart walls in the frame, said means mounting the impression cylinder and its center shaft in the frame being a sliding block received in said slots, and including adjusting means in the slots in the frame cooperating with eaCh sliding block for limiting the travel of said sliding block and said impression cylinder toward said intaglio cylinder and the respective desired distance between said impression and intaglio cylinders.