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Hellstrom; Nils Erik
Nyland, SW
No. of patents:

Patent Number Title Of Patent Date Issued
4093007 Method for root end cutting of lumber and a device for performing said method June 6, 1978
A root end cutting device for automatically aligning and cutting off the root ends of pieces of lumber. A conveying means transversely conveys the lumber through the device. Each piece of lumber is marked with a photosensitive transverse mark to indicate the location of a cut or with a
4024964 Device for stacking pieces of board or lumber May 24, 1977
A device for continuously stacking layers of pieces of board or lumber has a lower conveyor transporting the layers of lumber at a first substantially constant speed. An upper conveyor haing L-shaped carrying members overlies the lower conveyor with the open ends of the L-shaped memb
4023605 Method for grading and measuring lumber and a trimming device for performing said method May 17, 1977
Method and apparatus for trimming and grading lumber during transport thereof along a conveyor through a trimming device in which the lumber is cut at both root and top ends; said method comprising, arranging the lumber transverse a conveyor, initially cutting at the root end, directing

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