Abstract: A log singulator has first and second segments supported between roller mechanisms that allow the first and second segments to be reciprocated up and down. Each segment has a plurality of steps. Structural members of one segment extend between steps of the other segment. Some log singulators have first and second stages that can be independently operated. A first stage takes logs from a log pile and delivers the logs to a second stage that singulates the logs and delivers the logs to an output. A log storage area may be provided between the first and second stages. The first stage may operate at a higher cycle rate than the second stage. The second stage may be designed for rapid operation and good singulation of a range of log diameters. Embodiments of the first and second stages may be used in stand-alone applications and/or in combination with other log elevating and or singulating devices.

Abstract: A log singulator has first and second segments supported between roller mechanisms that allow the first and second segments to be reciprocated up and down. Each segment has a plurality of steps. Structural members of one segment extend between steps of the other segment. Some log singulators have first and second stages that can be independently operated. A first stage takes logs from a log pile and delivers the logs to a second stage that singulates the logs and delivers the logs to an output. A log storage area may be provided between the first and second stages. The first stage may operate at a higher cycle rate than the second stage. The second stage may be designed for rapid operation and good singulation of a range of log diameters. Embodiments of the first and second stages may be used in stand-alone applications and/or in combination with other log elevating and or singulating devices.

Abstract: A bottom board separator can remove the bottom board from a stack of lumber moving at process speed. The bottom board separator carries stacks of lumber on a first set of stack conveyors that are spaced apart along a path. Abutment surfaces push the bottom board transversely out from under the stack. A second set of stack conveyors follow the abutment surface and support the remaining part of the stack. Movable guides keep the remaining part of the stack traveling in the process direction.

Abstract: A bottom board separator can remove the bottom board from a stack of lumber moving at process speed. The bottom board separator carries stacks of lumber on a first set of stack conveyors that are spaced apart along a path. Abutment surfaces push the bottom board transversely out from under the stack. A second set of stack conveyors follow the abutment surface and support the remaining part of the stack. Movable guides keep the remaining part of the stack traveling in the process direction.

Abstract: This invention provides log singulators which allow for the vertical singulation of piles of logs fed from typical in-feed log decks, so that these logs may be fed individually to typical out-feed conveyors. Devices provided by this invention may be high-speed singulators occupying minimal floor space area. Singulators provided by this invention comprise arcuately oscillating lifting devices (“primary lifting devices”), preferably rotating synchronously in opposite directions. Preferably, these singulators elevate logs against vertically successive barriers. These barriers are shaped so that only one of either a largest log or a smallest log, which it is expected that the singulator should handle, can rest on the primary lifting devices and be carried upward at a time.

Abstract: This invention provides log singulators which allow for the vertical singulation of piles of logs fed from typical in-feed log decks, so that these logs may be fed individually to typical out-feed conveyors. Devices provided by this invention may be high-speed singulators occupying minimal floor space area. Singulators provided by this invention comprise arcuately oscillating lifting devices (“primary lifting devices”), preferably rotating synchronously in opposite directions. Preferably, these singulators elevate logs against vertically successive barriers. These barriers are shaped so that only one of either a largest log or a smallest log, which it is expected that the singulator should handle, can rest on the primary lifting devices and be carried upward at a time.

Abstract: A lumber lug loader for placing boards onto a lugged transfer deck is disclosed. The lug loader has a lower board accelerating deck and an upper board-contacting member. The lower board accelerating deck and the upper board-contacting member have driven moving surfaces which can be clamped against the board from above and below. Because the boards are clamped while they are being accelerated to the speed of the lugged transfer deck, the boards can be subjected to high acceleration without excessive slipping or significant damage to the boards. The boards are accelerated smoothly and quickly. This design therefore allows for operation at higher speeds than is possible with previous lug loaders. The lug loader also provides a movable overhead stop. In operation, boards are accumulated on a smooth transfer deck behind the stop.

Abstract: A lumber positioner having one or more parallel straight decks, and one or more parallel angle decks disposed transversely of, and adjacent a straight deck to extend at an angle thereto. One or the other of the straight deck or angle deck, is raised and lowered so that at least a portion of a piece of lumber extending across aligned lumber carrying surfaces of respective decks, can be transferred between a normal position, corresponding to the piece sitting on the lumber carrying surface of the straight deck, and a position vertically spaced therefrom in which it is sitting against a lumber contacting surface of the angle deck, so that the lumber piece can travel in a direction along either as desired. Preferably, a plurality of straight decks are constructed alike with each having at least one section.