Abstract: A plywood layup system for assembling veneer plies includes a carousel feeder that supplies core veneer plies to an accumulator gate system. The accumulator gate system accumulates one or several plies into a predetermined ply assembly pattern before releasing the accumulated plies. A glue application system is controlled to apply glue to either or both sides of a core veneer ply to allow many different assemblies to be made. The accumulated plies can be dropped aligned with and synchronized with a ply or assembly of plies, to form a complex assembly. The accumulator gate system can be arranged above a conveyor carrying passing plies or partial assemblies from other veneer supplying devices. Two carousels and accumulator gate systems can be arranged in tandem to provide more complex patterns of assembly.

Abstract: A plywood layup system for assembling veneer plies includes a carousel feeder that supplies core veneer plies to an accumulator gate system. The accumulator gate system accumulates one or several plies into a predetermined ply assembly pattern before releasing the accumulated plies. A glue application system is controlled to apply glue to either or both sides of a core veneer ply to allow many different assemblies to be made. The accumulated plies can be dropped aligned with and synchronized with a ply or assembly of plies, to form a complex assembly. The accumulator gate system can be arranged above a conveyor carrying passing plies or partial assemblies from other veneer supplying devices. Two carousels and accumulator gate systems can be arranged in tandem to provide more complex patterns of assembly.

Abstract: A door for sealing an aperture in a heated, pressurized chamber to prevent passage of gases through the aperture. A flexible door plate is sized to cover the aperture. A door frame is provided with frame members positionable around the circumference of one face of the door plate. Releasable fasteners are provided for releasably fastening the door plate and the door frame over the aperture to sandwich the door plate between the aperture and the door frame. A plurality of adjustable tightening members are disposed at intervals around the door frame for adjustably tightening the door frame against the door plate at each such interval.