Abstract: An apparatus is provided for improved retention of steel rule dies inserted into die slots of a retaining board. A plurality of lock slots are oriented substantially perpendicularly to the direction of insertion and have open faces to permit communication with the die slots. A kerf lock is located within each lock slot and extends into the die slot until a die is inserted into the die slot. Upon initial insertion of a die into the die slot, the kerf lock compresses. Once the die is competely inserted, the kerf lock exerts a normal force against the die in the direction of the die slot wall opposite the open face. An inserted steel rule die is securely held within the die slot.

Abstract: An embossing registration system is provided wherein an embossing block has at least one adjusting means in each corner of the block. A minimum of three adjusting means can be used to adjust the block left to right, backward and forward and to skew the block in any position needed to line up with printed material. Each corner adjuster includes a spring biased adjustment stud having a tapered annular groove such that the stud has an hour-glass shape. A set screw for each adjuster has a cone point which mates with the tapered groove. Turning the set screw forces the cone point into or out of the tapered groove which forces the adjustment stud in a perpendicular direction with respect to the axis of the set screw. Each adjustment stud may be spring biased so that each stud maintains a constant pressure on the side walls of the block cavity while positioning of the block takes place.

Abstract: An apparatus is provided for improved retention of steel rule dies inserted into slots of a retaining board. A plurality of chambers are oriented substantially perpendicularly to the direction of insertion and have open faces to permit communication with the slots. A spring is located within each chamber and is connected to a ball shaped member located at the open face. Upon initial insertion of the die, the ball shaped member causes the spring to compress. Once the die is completely inserted, the ball/spring assembly exerts a normal force against the die in the direction of the slot wall opposite the open face. Accordingly, the inserted steel rule dies are securely held within the slots.

Abstract: An apparatus is provided for improved retention of steel rule dies inserted into die slots of a retaining board. A plurality of lock slots are oriented substantially perpendicularly to the direction of insertion and have open faces to permit communication with the die slots. A kerf lock is located within each lock slot and extends into the die slot until a die is inserted into the die slot. Upon initial insertion of a die into the die slot, the kerf lock compresses. Once the die is competely inserted, the kerf lock exerts a normal force against the die in the direction of the die slot wall opposite the open face. An inserted steel rule die is securely held within the die slot.