Abstract: A large format table-top cutting apparatus includes a cutter bar assembly configured to in use support and guide a cutting head to cut material located below the cutter bar assembly; a lifting mechanism configured to raise and lower the cutter bar assembly between an upper position and a lower position The cutter bar assembly includes an elongate upper and lower supports connected by a link assembly so that these are arranged substantially parallel to one another and can move relative to one another along their longitudinal axes, and a raising assembly configured for adjustment by a user to exert a variable force on the lower part of the upper support at one end so as to place the upper support in tension and raise the free-hanging central portion of the upper support.

Abstract: A machine for cutting cardboards or the like has a base board, a clamp bar extending across it and spaced mounting arms for the clamp bar. A cutter head is slidingly mounted on the clamp bar. A projecting wedge member on the cutter head is slidingly received in a complementary wedge shaped slot in the clamp bar. The clamp bar is connected to the spaced arms by resilient connecting means permitting limited angular movement of the bar relative to the arms, while taking up lost motion in the connection.