A tree harvester is disclosed that includes first and second hydraulic pumps for powering a harvesting head of the tree harvester.

In addition, the invention also relates to a method in timber harvesting using a harvester.

A tree harvester (10) has a main boom (20) pivotally mounted on the front section (17) of the chassis, the rear section (11) carrying the power unit for the harvester.

The harvester includes pulsed-feed means (19, 30), which are arranged to be activated when a resistance according to a set criterion is detected in the feed device.

ALIEN: HARVEST — The surviving crew of a damaged deep-space harvester have minutes to reach the emergency evacuation shuttle.

Also included is wood-cutting saw chain containing the inventive link such as saw chain adapted for use on a chain saw, timber harvester and the like.

The merchantable portion of the tree stems (24) fall by gravity into a guide through and are pushed through a flail mechanism (38, 40, 42) which completely removes the smaller supple limbs and remaining bark missed by the cutter head assembly.

At the site where trees are freshly felled, the disclosed apparatus by means of a boom arm (20) and claw (22), pulls the merchantable portions of one or more tree stems (24) through a cutting head assembly (26).