Abstract: A lumber trimmer is disclosed wherein only one pair of parallel spaced-apart trim saws is mounted at one or both ends of a shaft. Each pair of trim saws is laterally movable along the shaft parallel to the longitudinal axis of lumber in the lumber trimmer. Each saw of the pair of trim saws is operably coupled with an actuator such that each saw is selectively vertically movable to trim the lumber. The pair of trim saws may be mounted to a carriage. A second actuator is operably coupled with the pair of trim saws for selectively laterally translating the pair of trim saws along the shaft.

Abstract: A method and apparatus of turning a board while the board is being transferred in a conveyance system includes a conveyance system for transporting a board, a rotary turning device for rotating the board, a bumper stop for restraining the board and a speed-up belt for increasing or decreasing delivery of the board. The rotary turning device rotates at a constant rate relative to the conveyance system speed; the bumper stop stops the flow of the lumber allowing the rotary turning device to pick up the board; the speed-up belt accelerates the board to the front of the lug space and the conveyance system transports the board while it is turned within the lug space.

Abstract: An articulated door which slides along a track. The track is arcuate so as to extend a distance equal to the height of the door. The track is curved up underneath the gunnel of a boat. The tracks are formed as an opposed facing pair so as to support the door as it slides up and along the track to open access into the storage locker formed between the door when in its closed position and the side wall of the boat hull.

Abstract: An improved slider block is a length of flanged channel having a cut-out in the lower web of the channel to accommodate mounting a flat bar journalled in the cut-out. The flanged channel is resilient. The flanged channel has a length sufficient to cover the length of a base plate on which the flat bar is orthogonally mounted. The sides of the channel define a cavity having a depth corresponding to the thickness of the base plate. A pair of flanges extend inwardly over the cavity from the sides of the channel so as to define a chain-receiving slot therebetween. The base plate mounts within the cavity. The base plate is welded to a chain so that when the base plate is mounted in the cavity the chain is mounted in and along the chain-receiving slot.

Abstract: A lumber trimmer is disclosed wherein at least one pair of parallel spaced-apart trim saws is mounted on a shaft. The pair of trim saws is laterally movable along the shaft parallel to the longitudinal axis of lumber in the lumber trimmer. Each saw of the pair of trim saws is operably coupled with an actuator such that each saw is selectively vertically movable to trim the lumber. The pair of trim saws may be mounted to a carriage. A second actuator is operably coupled with the pair of trim saws for selectively laterally translating the pair of trim saws along the shaft.

Abstract: An improved slider block is a length of flanged channel having a cut-out in the lower web of the channel to accommodate mounting a flat bar journalled in the cut-out. The flanged channel is resilient. The flanged channel has a length sufficient to cover the length of a base plate on which the flat bar is orthogonally mounted. The sides of the channel define a cavity having a depth corresponding to the thickness of the base plate. A pair of flanges extend inwardly over the cavity from the sides of the channel so as to define a chain-receiving slot therebetween. The base plate mounts within the cavity. The base plate is welded to a chain so that when the base plate is mounted in the cavity the chain is mounted in and along the chain-receiving slot.

Abstract: A device for selectively inverting a workpiece about the longitudinal axis of the workpiece within a single lug space of a lugged transfer without impeding lumber flow along a flow path on the lugged transfer, wherein the device includes a workpiece speed-up for urging the workpiece at an increased translation speed along the flow path, a selectively operable workpiece brake to inhibit accelerated translation of the workpiece by the workpiece speed-up so as to selectively at least momentarily delay translation of the workpiece at the increased translation speed of the workpiece speed-up, and a workpiece turning arm mounted downstream along the workpiece speed-up. The board turning arm is selectively actuable into the flow path so as to invert the workpiece about its longitudinal axis within a corresponding lug space of the lugged transfer once the workpiece has been translated by the speed-up to a downstream end of the corresponding lug space.