Abstract: An automated lumber handling system laser-scans the top profile of multiple stacks of lumber, each of which contain boards of a unique size. Based on the scanned profiles, the system determines the order in which individual boards from a chosen stack should be transferred to a numerically controlled saw. The saw cuts the boards to proper size, and in the proper sequence to facilitate orderly assembly of a roof truss or prefabricated wall. In some examples, the system lifts individual boards by driving two retractable screws, or some other piercing tool, down into the upward facing surface of the board. A track mounted cantilever, holding the screws and a laser unit, translates over the lumber stacks to retrieve and deliver individual boards and, while doing so, the laser repeatedly scans the stacked lumber profiles on-the-fly to continuously update the profiles. The open cantilever design facilitates replenishing the stacks of lumber.

Abstract: The present invention provides an efficient, reliable lumber magazine feeder that can supply large numbers of boards of all sizes. Some embodiments of this magazine lumber feeder comprise of one or more modules, each capable of dispensing a particular width of board. These modules may comprise a gripper/shuttle assembly, an overhead rail, and an adjustable lumber support. The gripper/shuttle assembly contains hydraulic valving to operate two hydraulic cylinders. The first cylinder grips the bottom most board in the stack by clamping onto the narrow dimension on a board. The second cylinder is capable of moving the gripper assembly in a push or pull direction, thus sliding the bottom board from its stacked position. The present invention may also include a programmable logic controller that receives electronic commands from an automatic saw, or the like. The controller in some embodiments receives electronic signals representing a desired board size from the automatic saw.

Abstract: The present invention provides an efficient, reliable lumber magazine feeder that can supply large numbers of boards of all sizes. Some embodiments of this magazine lumber feeder comprise of one or more modules, each capable of dispensing a particular width of board. These modules may comprise a gripper/shuttle assembly, an overhead rail, and an adjustable lumber support. The gripper/shuttle assembly contains hydraulic valving to operate two hydraulic cylinders. The first cylinder grips the bottom most board in the stack by clamping onto the narrow dimension on a board. The second cylinder is capable of moving the gripper assembly in a push or pull direction, thus sliding the bottom board from its stacked position.

Abstract: The present invention provides a lumber unloading and feeding method and apparatus that can reliably separate individual boards from a stacked unit and feed the individual boards into other automatic machinery. One embodiment comprises a first load supporting surface and a second load supporting surface that cooperate to support a first end and a second end of at least one tier; a tier receiver located below the first and second load supporting surfaces; a first pusher that biases the first end of the tier off the first load supporting surface; and a second pusher that biases the second end of the tier off the second load supporting surface, thereby allowing the tier to drop onto the tier receiver.

Abstract: A baler for compression and baling of waste including a ram and a reinforced vertically sliding bale chamber door at one end of a baler chamber. Tab and slot construction provide for interlocking of heavy wall components and associated members and for component self-alignment and location during fabrication. Extensive support by heavy gauge interlocking cross stringers, longitudinal stringers, and other interlocking support members, provides for operational and geometric stability of the mechanical chamber, the charge or gather chamber, the bale chamber, and the vertically sliding bale chamber door during compression and ejection of waste.