A delivery chain apparatus of wood-working machine with saw blades is disclosed. The delivery chain apparatus is formed into a loop by pivoting track units. The surface of each track unit is provided at least with a chain, each chain is locked on the track unit, some chains are made of metal, and the surface of a metallic chain is provided with teeth. The delivery device revolves on a desktop by power to send wood boards below the saw blades. The present invention is characterized in that the chains on the track units of the delivery device are combination of non-skid chains and the metallic chains, with the non-skid chains being made of rubber.

A sawmill for sawing a log segment in two through the core thereof and a method of sawing a log in half through the core thereof. The sawmill includes a log feed conveyor configured for feeding logs to a band saw and a log positioning rig, the band saw being disposed on a movable carriage of a fixed frame, the band saw being configured for sawing a log from a first end of the log to a distal end of the log. The log positioning rig has a reciprocating cradle having a plurality of spaced-apart cradle segments. The reciprocating cradle is pivotally attached to the fixed frame, and is configured for raising or lowering the first end of the log to align the central core of the log along the length of the log with a blade of the band saw.

A lumber cutting and delivery system for use in assembling trusses on a truss table includes a saw for cutting a piece of material into pieces of a truss. A trunk conveyor system receives the pieces cut from the saw. The trunk conveyor system has a first conveying element to transport the pieces over a distance in a travel direction and an ejector for discharging the pieces from the first conveying element in a first discharge direction. A branch conveyor system is configured to receive the pieces discharged from the trunk conveyor system in the first discharge direction. The branch conveyor system has a main conveying element to transport the pieces.

Various embodiments of the present disclosure provide a lumber handling and cutting apparatus, including an incoming material conveyor assembly, a material infeed assembly adjacent to the incoming material conveyor assembly, a cutting assembly adjacent to the material infeed assembly, a material outfeed assembly adjacent to the cutting assembly, an outgoing material conveyor assembly adjacent to the cutting assembly, and a printer assembly adjacent to the incoming material conveyor assembly and the material infeed assembly.

Various embodiments of the present disclosure provide a lumber handling and cutting apparatus, including an incoming material conveyor assembly, a material infeed assembly adjacent to the incoming material conveyor assembly, a cutting assembly adjacent to the material infeed assembly, a material outfeed assembly adjacent to the cutting assembly, an outgoing material conveyor assembly adjacent to the cutting assembly, and a printer assembly adjacent to the incoming material conveyor assembly and the material infeed assembly.

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

A lumber loading system for transferring lumber pieces. The lumber loading system comprises a driving shaft rotating about a longitudinal axis; at least one lumber piece grasping assembly operatively connected to the driving shaft and rotating about the longitudinal axis; and a longitudinal positioning system connected to the at least one lumber piece grasping assembly. The at least one lumber piece grasping assembly is displaceable along the longitudinal axis and is operative to initially grasp a section of a corresponding lumber piece extending longitudinally substantially parallel to the longitudinal axis, temporarily maintain the section of the lumber piece and subsequently release the lumber piece. The longitudinal positioning system moves each one of the at least one lumber piece grasping assembly independently along the longitudinal axis, during rotation thereof about the longitudinal axis. A method for simultaneous loading and longitudinal displacement of successive lumber pieces is also provided.

A lumber loading system for transferring lumber pieces. The lumber loading system comprises a driving shaft rotating about a longitudinal axis; at least one lumber piece grasping assembly operatively connected to the driving shaft and rotating about the longitudinal axis; and a longitudinal positioning system connected to the at least one lumber piece grasping assembly. The at least one lumber piece grasping assembly is displaceable along the longitudinal axis and is operative to initially grasp a section of a corresponding lumber piece extending longitudinally substantially parallel to the longitudinal axis, temporarily maintain the section of the lumber piece and subsequently release the lumber piece. The longitudinal positioning system moves each one of the at least one lumber piece grasping assembly independently along the longitudinal axis, during rotation thereof about the longitudinal axis. A method for simultaneous loading and longitudinal displacement of successive lumber pieces is also provided.

Various embodiments of the present disclosure provide a lumber handling and cutting apparatus, including an incoming material conveyor assembly, a material infeed assembly adjacent to the incoming material conveyor assembly, a cutting assembly adjacent to the material infeed assembly, a material outfeed assembly adjacent to the cutting assembly, an outgoing material conveyor assembly adjacent to the cutting assembly, and a printer assembly adjacent to the incoming material conveyor assembly and the material infeed assembly.