Abstract: A veneer lathe including drive rolls capable of being adjusted horizontally and vertically with the advance of the cutting operation. As the log diameter decreases, drive roll spike pressure and depth are adjusted, thus avoiding veneer damage and improving veneer quality.

Abstract: A veneer lathe in which a log is rotatably supported, and powered endless chain members having sharpened projections on their outer side are employed to rotatably drive the log. A knife is provided at the log surface so that the log is cut in a circumferential direction as the knife moves toward the longitudinal axis of the log and the log rotates. Log pressure means are provided to press the log surface adjacent the knife edge, and a conventional transport mechanism moves the assembly of the endless chain members, the knife, and the log pressure means toward the longitudinal axis of the log in synchronization with the log rotation so that a veneer is continuously cut from the log.

Abstract: A method of and apparatus for tenderizing a veneer. The method has the steps of forming cuts in one of the surfaces of a veneer transferred in a stretched condition, and bending the veneer toward the side opposite to the cut surface, thereby to allow a number of cracks to be generated from the cuts, thereby to tenderize the veneer and to avoid the curling of the same.

Abstract: An apparatus for piling veneer sheets for plywood sheets at a predetermined position comprising at least one stage of conveyer means having two horizontal, parallel and spaced conveyer belts to support a veneer sheet, stopping means to stop the veneer sheet when one edge of the veneer sheet reaches a predetermined position, detecting means to detect the veneer sheet when the veneer sheet is fed to or adjacent to the predetermined position, and pressing means for pressing the veneer sheet downwards in response to a signal from the detecting means to a predetermined piling position. When the veneer sheet is stopped, one terminal edge is at said predetermined position. Thus, when veneer sheets are piled, the edges of the sheets maintain their position so that piled sheets can be readily used in plywood manufacturing process, and productivity of plywood sheets is improved.

Abstract: A method and an apparatus of piling veneer sheets for plywood sheets at a predetermined position comprising at least one stage of conveyer means having two horizontal, parallel and spaced conveyer belts to support a veneer sheet, stopping means to stop the veneer sheet when one edge of the veneer sheet reaches a predetermined position, detecting means to detect the veneer sheet when the veneer sheet is fed to or adjacent to the predetermined position, and pressing means for pressing the veneer sheet downwards in response to a signal from the detecting means to a predetermined piling position.When the veneer sheet is stopped, one terminal edge is at said predetermined position. Thus, when veneer sheets are piled, the edges of the sheets maintain their position so that piled sheets can be readily used in plywood manufacturing process, and productivity of plywood sheets is improved.

Abstract: An apparatus for mending surface irregularities of wooden plates such as those of plywood is provided. Recesses on a plate are automatically filled with putty by this apparatus. Putty is pressurized and the filling of the recesses therewith is controlled by a plurality of needles provided to detect these recesses. In this way, irregularities on a plate are effectively and automatically smoothed regardless of their shape or size.

Abstract: An apparatus for cutting off a thickness of wood or veneer from a log, which apparatus uses a plurality of resilient pressing members formed as rollers for pressing the surface of the log during the cutting operation. Each roller has a plurality of edged members projecting from the periphery thereof, which edged members form a plurality of small cuts in the surface of the log prior to cutting of the thickness of wood or veneer therefrom.

Abstract: An undried veneer sheet is fed in a direction substantially against the grain of the veneer sheet by means of an infeed conveyor means having a predetermined feeding speed and an outfeed conveyor means having a feeding speed lower than the predetermined feeding speed to compress the undried veneer sheet for efficiently dehydrating same without affecting sheet thickness since compression is not applied against the thickness of the veneer sheet. This invention also serves to cause the water content in the veneer sheet to be relatively uniform after processing due to the fact that the method of compression utilizes the difference in feeding speed between the infeed and outfeed conveyor means. As a result, the water content of the processed veneer sheet in the final drying process is made uniform and the controlling of the water content in the veneer sheet is remarkably simplified.

Abstract: A method and apparatus of splicing a train for veneer sheets being fed in a horizontal direction on infeed and outfeed conveyors operated by electric sensors that signal the conveyors to start or to stop at predetermined appropriate times when the preceding and succeeding veneer sheets pass certain predetermined positions, coordinated with application of a strand and beads of a thermoplastic adhesive onto said train of the veneer sheets on conveyors by a cold press. According to this method and apparatus, the splicing of veneer sheets may be achieved with an increased speed and strength of splicing in the transverse direction, in comparison with conventional method and apparatus.

Abstract: A method of severing a veneer sheet comprising feeding a veneer sheet, sensing an irregularity or a predetermined length of said veneer sheet and actuating, in accordance with the sensing of the irregularity or the predetermined length of the veneer sheet, a cutter member pivotally disposed and having an edge portion adapted to work on the side of the fed-in veneer sheet during the pivotal movement of the cutter member. Severing can be done without stopping feeding of a veneer sheet and the arrangement of said cutter member realizes dividing of a feed-out passage of the veneer sheet into two different directions.

Abstract: A device for severing a veneer sheet comprising a veneer sheet feeding means, a cutter member pivotally disposed on the feed-out side of said veneer sheet feeding means and having an edge portion adapted to work on the side of the fed-in veneer sheet during the pivotal movement of the cutter member, a means for sensing an irregularity or a predetermined length of said veneer sheet, a means for transmitting a signal in accordance with the sensing of the irregularity or the predetermined length of the veneer sheet and an actuator for actuating in response to said signal said cutter member to cut the veneer sheet in cooperation with a force by which the veneer sheet is fed. With such a device, severing can be done without stopping feeding of a veneer sheet and the arrangement of said cutter member dividing of a feed-out passage of the veneer sheet into two different directions.