Frame for accommodating varying printing press gripper margins

An assembly for retaining a tool for use in a press having a gripper margin that is larger than the gripper margin of the tool comprising:

• a frame having a first wall including an opening, a second wall and third wall, said walls defining a rectangular channel;
• a rectangular-shaped spacer adapted to fit within said channel and sized to increase the effective length of the tool to match the gripper margin of the tool with the gripper margin of the press;
• and
• an extension on said spacer located to engage an said opening in said frame.

An assembly for retaining a tool for use in a press having a gripper margin that is larger than the gripper margin of the tool comprising:

• a frame having a lower wall including a first, second and third wall, said walls defining a rectangular channel;
• a rectangular-shaped spacer adapted to fit within said channel and sized to increase the effective length of the tool to match the gripper margin of the tool with the gripper margin of the press;
• an extension on said spacer located to engage an said opening in said frame;
• and
• a plurality of magnets located in said frame to releasably retain said spacer held within said channel.