Embosser mounting insert registering means

In combination, a steel rule die and an adjustable embosser comprising a mounting insert carrying said embosser, said die having an opening herein, said die including knives circumscribing said die opening, said insert fitted into said die opening with clearance to permit lateral movement of the insert relative to the die, threaded bores formed in said die in communication with said die opening at opposite sides of the opening, adjustment screws turned into said die bores and contacting said insert such that axial movement of said screws is translated into said lateral movement of said insert to position said embosser relative to said die, said insert having a peripheral groove, said peripheral groove being V-shaped and having upper and lower surfaces, said adjustment screws abutting the lower surface of said peripheral groove for laterally moving said block to position said embosser relative to said die, said upper surface of said peripheral groove constituting means for contacting said adjustment screws to prevent separation of said insert from said die.