U.S. Natural Resources, Inc.

Other

Michael P Knerr

Mike Dockter

Glen O Chambers

William P Bowlin

Jeffrey D Ballance

Lloyd R Booth

Glenn E Teague

A shape sawing system for sawing lumber pieces from a curved cant. The cant is scanned by scanners and the scan data is input to a computer. The computer determines a curved path for the saw to follow in sawing the cant into lumber pieces. The saw is laterally and pivotally adjustable to follow the determined path established by the computer. The saw is a plurality of circular saw blades having a defined cutting edge portion that is inclined from a leading point at the bottom of the cant to a trailing point at the top of the cant. The point of pivot of the saws is between the leading point and the trailing point of the cutting edge portion. The saw assembly is mounted on pads having a low coefficient of friction. Pressurized air and lubricant are delivered to the pads to reduce the friction.

Shape sawing machine

This invention applies to a shape sawing system for sawing lumber pieces from a curved cant portion. A scanner scans the cant portion as it is conveyed on a conveyor system and inputs the scan data into a computer. The computer determines the curvature and position of the cant portion on the conveyor system. The conveyor system conveys the cant portion through side chippers and into a saw. The side chippers are independently laterally adjustable to follow the curvature of the cant portion. Guide members mounted strategic to the saw guide the cant portion into the saw. The saw is pivotally and laterally adjustable to follow the curvature of the cant portion to produce full length and partial length lumber pieces from the cant portion.

Shape sawing system

An adjustable support for a conveyor for controlling the position of a product such as a log. Support structure is provided near each end of the conveyor. The structure includes mechanism to shift the conveyor side ways and also has mechanism to elevate and lower the conveyor. Each structure is operable independent of the other.

Adjustable support for conveyor

A processing system for processing logs having a curvature into lumber pieces. The system has a cutting station including a saw box with a chipper and a vertical arbor saw mounted to the saw box. The saw box is movable upwardly and downwardly and angularly for tilting. The movement of the saw box orients the chipper relative to the log and provides the capability of the saw to follow a curved saw path. A scanner scans the log and a computer processes the scan data to determine the optimum saw path.

Vertical arbor saw for shape sawing a log

An adjustable support for a conveyor has paired cylinders pivotally attached to the frame of the conveyor. The frame supports the mechanism for transporting a lumber product. Each pair of cylinders is mounted in a crossed configuration which provides rigid support for the frame. The controlled extension and retraction of the rods of the cylinders provides for elevating the frame, lowering the frame, side shifting of the frame as well as longitudinal tilt and lateral skewing of the frame.

A method and apparatus for around the curve sawing is shown and described wherein a group of roller assemblies are positionable along a selected semicircular path having a point of tangency relative to lines of cut provided by an assembly of cutting blades whereby each roller assembly provides a transport path normal to the axes of rotation for each roller assembly and tangent to the selected semicircular path. Upon actuation of the roller assemblies, as positioned along the selected semicircular path, the wood product, as captured between rollers of the roller assemblies, moves along the selected semicircular path and into the cutting device for cutting along concentric lines of cut. The method and apparatus is particularly well suited for use with tree species having irregularly shaped protrusions and formations deviating from an idealized curved centerline of the log or cant.

Method and apparatus for around the curve sawing

A cooperative conveyor system for a lumber production line. The production line has a canting station and a sawing station spaced at a distance from each other and interconnected by a powered conveyor system. The cants are fed at a higher rate through the canting station than through the sawing station. The conveyor system is arranged to receive cants from the canting station at a high feed rate and transport the cants to and into a sawing station at a lower feed rate. The cants are fed through the canting station at controlled intervals so that the resulting gap between succeeding cants received on the conveyor are at a desired spacing to maximize the production of the sawing station. The cant exiting from the canting station is forced to overrun the conveyors feed rate and thereby reduces the gap between it and a preceding cant. The conveyor then transports the cant to and into the sawing station at the desired feed rate for the sawing station. In one embodiment, the sawing station has two saws. The conveyor system is arranged to shift the cant exiting the canting station into alignment with the saw selected to perform the sawing operation.

Cooperative conveyor system for canter and saw

A system for processing a log or cant including chippers, profiling heads, and saws arranged as a sequence of coupled operations. Scanners and computers determine the log configuration and projected configuration of lumber pieces to be derived. One scanning function is the determination of the wane area configuration in the region of the projected side board edges. This enables a determination of the side board edges including acceptacle wane area and the desired orientation (incline or decline) of the boards relative to the path of conveyance. The profiling heads are adjustable in response to computer calculations to edge the established side boards. Stabilizing is provided and includes guide anvils positioned at the board edges following the edging operation.

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Ridgefield, WA, United States of America

Michael P Knerr