Introduction: Katsuji Hasegawa, based in Ohbu, Japan, is a prominent inventor recognized for his significant contributions to woodworking machinery. With a total of 28 patents to his name, he has developed inventive solutions aimed at enhancing the efficiency and precision of woodworking processes.

Latest Patents: Among Hasegawa's notable inventions, two stand out prominently. The first is a "Splitting Apparatus," designed to split a wood board into two separate sheets. This apparatus features a pair of parallel drive shafts that rotate in opposite directions, equipped with a series of toothed wheels that engage with the board. Additionally, the design includes a knife positioned to effectively split the board. A unique aspect of this invention is the offset relation of the toothed wheels' tip end portions, which enhances the cutting precision.

The second noteworthy patent is the "Method and Apparatus for Cutting Wooden Plates." This innovation involves a rotatable roll positioned beneath a planing cylinder. It includes front and rear feed units with upper and lower rolls for gripping the plate, ensuring stability during the cutting process. The design allows for the plate to be supported at three points, preventing it from floating and minimizing the formation of depressions during cutting.

Career Highlights: Hasegawa has made significant strides in the woodworking industry, particularly during his tenure at Meinan Machinery Works, Inc. His career is marked by a focus on developing efficient and effective machinery for processing wood, demonstrating a deep understanding of both mechanical design and the practical needs of woodworkers.

Collaborations: Throughout his career, Hasegawa has collaborated with esteemed coworkers such as Norio Shibagaki and Kenichi Hiraiwa. These partnerships have undoubtedly contributed to his successes and innovations in woodworking machinery, fostering a creative environment that encourages the development of groundbreaking technologies.

Conclusion: Katsuji Hasegawa's impact on the woodworking industry is evidenced by his 28 patents, which exemplify innovation and practicality. His dedication to developing advanced machinery has not only improved the efficiency of woodworking processes but has also set new standards in the field. As Hasegawa continues to innovate, his contributions remain invaluable to the industry and inspire future advancements in woodworking technology.

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