Abstract: A segmental drum (10) has a plurality of axially extending circumferentially spaced segments (36) with flexible connections (56) to shoulder pistons (32) at opposite ends of each segment (36). Wedge shaped bars (62) are positioned between the segments (36) and connected to center pistons (64) for urging tapered side faces (80) of the bars (62) into engagement with sloping side faces (78) of the segments (36). Elastic turnup bladders (42) are positioned outward of the segments (36) with nose portions (40) overlapping the ends of the segments (36) for resiliently returning the segments (36) and bars (62) to a retracted condition after expansion by radially outward movement of the shoulder pistons (32) and center pistons (64).

Abstract: A device for cutting strip material across its length has a single plate frame in which a tool slide is reciprocable by a toggle linkage driven by moving cylinders the piston rods of which are fixed to the frame. Fluid delivered by way of passages in the piston rods powers the movement of the cylinders for smooth vibration free action. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.