Spreading machine cutter box assembly

A sheet material spreading machine comprising

• a carriage mounted for movement along a table surface and carrying a supply of continuous sheet material to be deposited in superimposed layers on said table surface, with a layer deposited in each operative run of said carriage along said table surface,
• a cutter box assembly mounted on said carriage and adapted to cut off the layer of sheet material deposited on the table surface at the end of each operative run of said carriage,
• and means for guiding and feeding said sheet material from said supply, through said cutter box assembly to the table surface,
• said cutter box assembly comprising an elongated support member mounted on said spreading machine carriage and extending transversely thereof,
• a cutter frame movably mounted on said support member,
• guide means on said support member for guiding movement of said cutter frame in opposite directions along said support member,
• a circular cutter member rotatably mounted on said cutter frame in a horizontal position and having a peripheral cutting edge portion,
• a pressure bar movably mounted on said cutter box housing and having a planar inner surface in engagement with the cutting edge portion of said cutter member, and a planar outer surface, said sheet material being fed between said cutter member and the planar inner surface of said pressure bar,
• a retaining member mounted on said cutter frame and engaging the planar outer surface of said pressure bar for retaining said pressure bar against movement away from said cutter member, and
• biasing means mounted on said cutter box support member and adapted to urge said pressure bar into firm engagement with said cutter member, thereby causing said cutter member to score sheet materials fed between said cutter member and said pressure bar under rolling action of said cutter member against said pressure bar as said cutter member is carried by said cutter frame and rolls along said support member.