Long-timber chipping machine

US5647417A · kind A · utility

Assignee

• Inter-Wood-Maschinen KG · DE

Inventors

• Karl Schaefer · Füssen, DE
• Gerd Schaefer · Monsheim, DE

Key dates

• Filing date: Jan 16, 1996
• Grant date: Jul 15, 1997
• Expiry date: Jan 16, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B27L11/02
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A long-timber chipping machine has a timber feed channel for receiving longitudinally arranged timbers, advanced using a timber-advancing device to a vertically movable chipping device positioned at the downstream end of the feed channel. The chipping device has a rotatable cutter ring equipped with chipping cutters on its cylindrical inner wall, which defines a chipping chamber. The chamber is aligned with the downstream end of the feed channel. To improve the chipping, a curved timber-receiving plate projects into the chipping chamber from the downstream end of the feed channel, which also has a matching curved base. The curvature of the plate and the base match the curvature of upper cylindrical inner wall of the cutter ring so that the upper cylindrical inner wall can be lowered closely to the plate, leaving only a very small clearance and exposing all of the timbers to the chipping cutters. To better guide the timbers into the chipping chamber, the chipping device includes two vertical side walls attached to the housing that shields the chipper ring. These side walls extend into the chipping chamber and spaced apart so that the plate is positioned between the side walls and al…