English to Russian Science Science (general) изобретения, древесина

Thus by a suitable adjustment of an overflow door the different kinds of timber are sucked into a short channel which preferably is arranged in communication with a retaining or collecting basin. Timber, floating at a greater depth, is prevented from floating off by occasionally lifting the overflow-door, whereby a retaining action arises, which stops the start of the undesirable movement. After the discharge from the said short channel, a further separation of the different kinds of timber is carried out by reason of the fact that the small pieces of wood float on the top and in case the overflow-door is lowered very slightly only, these small pieces are discharged into a wet-chute which lies at a proper depth opposite the floor of the channel, while after a further lowering of the overflow-door the log-timber is discharged into a higher timber cute by reason of the greater speed of the water. The short channel is provided with longitudinal ribs, in order to prevent a rotation or eddying of the water in this part.