Abstract: The invention concerns a chain saw for a tree cutting device.This chain is composed of cutting links (2) having two cutting teeth (6) located on either side of the longitudinal axis of the chain, one of the teeth being basically in the plane of the chain and the other tooth being displaced with respect to the plane of the chain, and the cutting links being so placed that the chain presents, on either side of its longitudinal axis, successively, a tooth displaced on one side of its plane, a tooth in its plane, a tooth displaced on the other side of its plane, a tooth in its plane, and so forth.

Abstract: The invention relates to a machine for cutting down and shaping trees, designed to cut down, strip and truncate trees, consisting of a support and cutting down-stripping-truncating equipment likely to be adapted to a self-propelling device, said equipment carrying a movable framework on which the cutting-truncating and stripping elements are positioned, a machine wherein the components thereof are substantially secured along a one and same axis, the stripping element carrying at least two blades surrounding the tree and at least two rollers with barbs the positioning of which can be adjusted by means of jacks, the axis along which the trunk is pulled between the rollers coinciding with the axis of the trunk between the blades.

Abstract: A delimbing device for stripping branches from tree trunks includes a cutting chain which is wrapped about the tree trunk in a helical configuration. The articulated links of the chain include cutting edges which are disposed in helical configuration about the tree trunk so that when the trunk is advanced axially with respect to and through the helical chain, the limbs will be stripped from the trunk.