Method and machine for packing wood chips
AssigneeAnders Eric Sundin
InventorErnst Erik Forsgren
Life of this patent
Estimating the term…
Abstract
A method and a machine for packing wood chips into containers that are easily transported from the place of production to the place of utilization. The wood chips are blown from the discharge tube of the wood chipper straight into a tube-like package which has perforated walls allowing the air carrying the wood chips to escape from the package while the chips are retained inside the package.
Claims6
An improved method for packaging wood chips comprising, making wood chips in a mechanical wood chipper by feeding waste wood including large branches of trees and tree tops to the mechanical wood chipper and simultaneously mechanically developing an air stream for immediately discharging the wood chips in a stream of air and principally as a stream of wood chips along a discharge path of flow, before discharging the wood chips along said dishcarge flow path defining a terminal length of said discharge flow path and the volume of chips that can flow along said discharge path of flow with an air-permeable, packaging tube of variable length disposed in an axially folded condition to receive the discharge stream of air and wood chips for storing thereof as a package, said tube having a closed end terminating flow of said wood chips internally of the tube, automatically filling the tube defining the terminal length of the discharge flow path with said stream of air and wood chips while progressively feeding said air-permeable tube along said flow path under control of wood chips impelled along said flow path by air thereby varying the length of the terminal length of the flow path in dependence upon the length of the package intended and while filling the tube simultaneously venting the air in said stream through said air-permeable tube at a rate to pack the wood chips as said tube fills with wood chips, before filling said tube positioning a stop for determining the terminal length of the tube by determining the position at which said closed end thereof will engage said stop, and removing the filled tube as a storable package.
In combination, an apparatus for making wood chips and packaging them comprising, a mechanical wood chipper having means for making wood chips from waste wood including large tree branches and tops of trees and means for simultaneously developing an air stream and immediately propelling them as a stream of wood chips along a discharge flow path, a crane for loading large tree branches and tops of trees to said wood chipper, and an air-permeble tube folded axially for defining a terminal length of the discharge flow path for receiving the stream of wood chips and having a closed end terminating their flow internally of the tube and having perforated walls for simultaneously venting the air in said stream for filling said tube with packed wood chips to a desired extent as a package, means for directing and feeding the stream of wood chips into the perforated tube for automatic filling and packing thereof and for progressively feeding said perforated tube from a folded condition along said discharge flow path under control of the stream of wood chips, stop means variable in position along said flow path and against which said closed end of the tube bears as said tube is progressively filled, thereby said package is controllable as to length.
In combination, a vehicle and an apparatus transportably mounted on said vehicle for making wood chips an packaging them in various size packages for delivery and storage;
- said apparatus comprising, a driven mechanical wood chipper for making into wood chips waste wood including large tree branches, tree trunks and the tops of trees, mechanical means in said wood chipper for simultaneously developing an air stream and immediately impelling them by said air stream as a stream of wood chips along a discharge flow path, a crane on said vehicle for supplying said mechanical wood chipper with large tree branches, tree trunks and the tops of trees for making them into wood chips, an air-permeable tube having perforated walls folded axially for defining a terminal length of the discharge flow path for receiving the stream of wood chips automtically delivered thereto and having a closed end terminating their flow internally of the tube, means for directing and feeding the stream of wood chips into the perforated tube for automatic filling and packing thereof and for progressively feeding the perforated tube from a folded condition under control of the stream of wood chips, said perforated walls comprising a mesh effective for simultaneously venting the air in said stream during filling of said perforated tube an effective for allowing packing of the wood chips to a desired extent as a package under control of the stream of wood chips, and stop mean for variable positioning along said flow path and against which said closed end of said tube bears as said tube is progressively filled, thereby said package is controllable as to length.
Dependencies are inferred from the claim text.