Sätt att förhindra eller reducera uppkomst av magnetism i två relativt varandra närliggande och motroterande sågklingor, samt en anordning för utövande av sättet

摘要

The device has saw-blades, each formed with radially extended through tracks with an extent within the area between each blade rotation centre and surrounding saw tooth-shaped area. The saw-blades (1) are formed with a number of radially extended through tracks (2,2',2"), which during rotation conductor air between the saw blades adjacent planes. The through tracks have an arch-shaped extent, pref. with the track end parts arranged in the rotation direction in front of the central part. The through tracks have a linear extent. The track width is greater for saw-blades provided for a high speed range than for blades for a low speed range. The tracks are arranged symmetrically and like-shaped separately from one another. They have a bevelling (3) at the edge port which comprises an introductory edge part in the rotation direction, thereby forming an inclined edge surface extending from the saw-blade outer planes towards an area on the inner plane.