| 摘要 |
771,401. Rotary cutter heads. SCHWABEDISSEN, W., and SCHWABEDISSEN, E., [trading as MEYER & SCHWABEDISSEN. F.]. April 19, 1955 [April 22, 1954], No. 11215/55. Class 145 A rotary cutter head for producing wood chips has cutters M secured in the peripherally-grooved body K by wedges O and each cutter and wedge is notched correspondingly to the body grooves to provide outer and inner longitudinal cutting edges Sa, Si joined by radial cutting edges Sr. Chip grooves Na, Ni at different radii are formed in each wedge in front of the cutters and have lips L radi- ally inwards of the cutting edges.. To 'reduce friction on the radial cutting edges, the grooves corresponding to the inner cutting edges are wider than the longitudinal length of the inner edges. The notched formation made in the wood Z being chipped prevents axial movement of the wood during cutting. |
