Abstract: In a method of painting a building board being conveyed on a conveyor by means of a spray painting apparatus so that a plurality of colors of gradated or shaded patterns are formed, a plurality of spray guns are connected to a plurality of paint supply systems supplying different colors of paint, respectively. The spray guns are arranged in parallel to a direction in which the building board is conveyed. With the spray guns being reciprocated in a direction crossing the direction in which the building board is conveyed, each of the spray guns is intermittently turned on and off so that the paints of colors different from one another are sprayed from the spray guns onto the surface of the building board. The relation between a speed of the reciprocation of each spray gun and a speed of conveyance of the building board is expressed by L.ltoreq.P.times.

Abstract: A method of coating embossed panels having embossed panel portions which are offset in generally parallel planes. A liquid accent coating is applied to the panels as they are moved along a predetermined path. A roll is reverse rotated to wipe liquid coating from the high points of the embossed panel surfaces, creating a high level of contrast with the relief portions where a greater amount of coating remains. The rolls do not wipe the steps between panel portions so that the steps are more heavily coated, to create a dark shadow line. Doctor blades strip coating from the roll, except in those portions that do not contact the panel steps. Vacuum removes excess coating from the stepped areas of the panels and also from those portions of the rolls not contacted by the doctor blades. Apparatus for carrying out the method is also disclosed.

Abstract: Apparatus for applying ski wax to the bottom of a ski comprising a pair of ski support tracks adapted to carry a ski thereon and align if for proper entry into a waxing area where heated wax is applied to the bottom of the ski while the ski is transported through the waxing area and buffing the same. In this manner, a ski is waxed and ready for skiiing.

Abstract: An apparutus for coating a liquid on an elongated profile having a longitudinally extending front surface and a longitudinally extending back surface has a housing forming a generally closed treatment chamber and having an inlet opening and an outlet opening spaced downstream along a treatment path extending through the chamber from the inlet opening. Both openings are of a size and shape slightly larger than the section of the molding. A mist of the coating liquid is supplied to the chamber. An upwardly open channel guide extending in the chamber between the openings is formed with an upwardly open groove open longitudinally at each of the openings. This guide is generally complementary to the back surface of the molding.

Abstract: A coating system utilizing application under vacuum technology in which entrance and exit ports for the material to be coated are defined by a pair of horizontal gates and a pair of vertical gates at the inlet and outlet apertures of the coating chamber. A mounting arrangement at each port mounts the top vertical gate and the two horizontal gates in sliding relation with associated edges of the inlet and outlet apertures. Positioning arrangements are provided for each of the slidably mounted gates for setting an initial position of the associated gate, and each gate is provided with spring means for biasing that gate toward its initial position.

Abstract: An apparatus for treating the surfaces of a panel with irregular sides. Sealant is pressurized by applicator rolls acting on the top and bottom faces of the panel while sealant, deposited on the panel sides, is dispersed thereover by the side located spreader rolls. Side applicator rolls are stationed in series along each side of the moving panel with a first series of rolls each having an annular portion for pressuring sealant into the surfaces of the grooved side of the panel. Similarly the tongue side of the panel is sequentially treated by the rolls of a second series each having a circumferential recess within which is received the tongue of the remaining panel side. Additional rolls surface treat the panel faces. The side applicator rolls are biased into panel side engagement by spring assemblies which couple opposed side applicator rolls to one another to permit same to accommodate a moving panel with uniform pressure regardless of discrepancies in the panel path.

Abstract: Method and means, including a trim saw structure, for assembling finger jointing lumber by an impression finger joining process wherein the ends of two pieces of lumber are placed in spaced apart position and held securely by clamps. A movable section of the machine trims and shapes the ends of the lumber into fingers which are then engaged by a hot die for further impression forming and heating of the fingers. The die moves out of position and a movable applicator applies glue to the outer half of the matching ends of the lumber. The ends are then pressed together and the joined pieces of lumber are advanced away from the work station. The process is a continuous such that incoming random lengths of lumber are joined to form a continuous outgoing length of lumber for cutting into desired lengths. One or more lines of lumber may be advanced through the finger jointing work station during a machine cycle.

Abstract: A conveyor is arranged to pass lumber strips through a tank of treating liquid and includes pairs of upper and lower flexible lines arranged to receive lumber pieces therebetween. Hold-down apparatus is engageable with the upper flexible lines and is arranged to force such upper lines toward their lower lines to frictionally hold lumber pieces between the upper and lower lines and also to force the assembly of upper and lower flexible lines and lumber pieces down below the liquid level in the treating tank for coating the lumber pieces during the pass of the conveyor through the tank. In a preferred arrangement, the flexible lines comprise resilient type ropes wherein the conveyor assembly is forced down below the liquid level by a stretching of the ropes. The hold-down apparatus is pivotally supported adjacent one end of the tank and has longitudinally spaced pulleys for guiding the ropes, these pulleys being arranged to vary the submerged length of travel by pivotal adjustment of the hold-down apparatus.

Abstract: In a finger slotting and glue applying machine, random length studs, free from blemishes and having precisely squared ends, are advanced edgewise on a conveyor with their right ends (as viewed from the delivery end of the conveyor) aligned, past a set of slotting saws for uniformly slotting the right ends of the studs. The studs are then shifted to align their left ends and advanced past a second set of slotting saws for uniformly slotting the left ends of the studs. The studs then have adhesive applied in the left end slots and are then discharged at the introductory end of a machine which advances the studs lengthwise, interfitting and adhesively uniting successive studs end to end for producing blemish-free composite studs or beams which may be cut into any chosen length or lengths. The present invention has to do with limiting the regulating, the feeding and application of the glue to the slotted left ends of the studs and with the clean recovery and return to the source of surplus glue.

Abstract: A method and apparatus for decorating embossed panels by removing liquid colorant from portions of the surface. The apparatus includes at least one driven support roll underlying the panels for moving the panels along a work path and at least one wiping roll supported on an axis above the work path having a cylindrical resilient wiping surface driven at a speed for wipingly engaging an upper surface of the panels passing under the wiping roll on the work path. The wiping roll is supported and biased for movement toward and away from the work path to provide selectively adjustable wiping pressure against the surface of the moving panels and a doctor blade angularly engages the wiping surface of the wiping roll along a line spaced away from the area of wiping contact between the panels and the wiping roll for removing liquid colorant from the wiping surface of the roll.

Abstract: An applicator nozzle adapted to apply a liquid coating to the shaped edge portions of work pieces. The nozzle is particularly adapted for applying a finish coat of paint to the beveled and adjacent nonparallel planar surfaces of the edges of fiberboard. The nozzle comprises a body member having a nose portion shaped to conform to the main configuration of the board edge to be coated. The front face of the nose portion has an open-end reservoir and a slot extending upwardly therefrom. A passageway extends from the reservoir through the length of the nozzle. Paint is fed through the passageway to the reservoir. During the application of paint to the edge portion of a board being conveyed past the nozzle, the beveled edge passes through a stream of paint issuing from the reservoir and partially seals it off, thus causing the paint in the reservoir to pressurize and be forced into any voids in the board's edge surface.

Abstract: Apparatus for scraping a surface of a substrate comprising substrate support means for supporting a substrate and defining a path of trovel of said substrate through said apparatus, scraping blade support means for supporting a flexible scraping blade for contact against a surface of said substrate moving along said path, a flexible scroping blade in said scraping blade support means to form an arcuately curved scroping edge in contact against said substrate, and means for adjusting the contacting pressure of said arcuate scroping blade edge against said surface of said substrate.

Abstract: Disclosed is a glue applicator for applying glue to an uneven generally vertical surface having a generally upright rotary brush with a compartmented doctor block at one side thereof. Glue is pumped into the feed compartment and onto the brush which then wipes it onto the work piece. Glue recovery means are provided below the brush for recycling unused glue, and a shield is preferably provided around part of the brush to minimize splattering. The doctor block compartment may be in the form of an open-sided tube, or may comprise a series of serrations in the doctor block.