Abstract: A lumber processor includes slowdown conveyor to transition lumber pieces from one processing device to a subsequent processing device where the movement of lumber pieces changes from lineal to lateral motion; a printer station includes a printer boom which includes a lateral translation device to move a symbol printer over the path of travel of the conveyor to allow the printer to mark pieces of lumber that are passing beneath the printer station.

Abstract: A board turning apparatus is provided with a conveyor for transporting a board through an inspection station; the inspection station includes an array of photocells located below the conveyor and which operate to detect and scan the facing surface of a board as it passes over the photocell or is held in the inspection station by a detent arm; the output of the scan by the photocell array is delivered to a computer having an analyzing program for detecting discoloration in the surface or edges of the board that are scanned by comparing the scan to a set of conditions stored in the computer; a turning arm is connected to the computer and is actuated to engage an edge of the board and turn the board over by rotating it about its opposite edge on the conveyor to turn over the board to facilitate and optimize subsequent operations on the board such as edging of the board.

Abstract: The leak detecting system comprises a housing including a conduit with an inlet for coupling to the outlet of a pressure actuated valve and an outlet for passing fluid through the leak detector during normal operation. A movable element extends in said conduit and moves upon entry of fluid therein. A sensor is coupled to the movable element and provides an alarm control signal upon detection of movement of the movable element.

Abstract: A chemical pump includes an access sleeve positioned between a hydraulic driving cylinder and the chemical injection cylinder with a rod coupled between the hydraulic driving piston and the injection piston. The access sleeve structurally secures the driving cylinder to the injection cylinder and includes access ports through a sidewall thereof such that when the injection piston is withdrawn into the sleeve, the seals are accessible for replacement or other piston maintenance. According to another aspect of the invention, the diameter of the hydraulic piston is substantially greater than that of the injection piston.