Abstract: This machine cuts and provides large panels, as plywood, hardboard or similar materials, on one side to provide a large panel having a flat back surface and a profiled front surface, said front surface characterized by a plurality of longitudinally extending, side by side, slightly inclined flat surfaces separated by approximately perpendicular ledges or shoulders of narrow width, thereby imparting to the panel the appearance of lap siding when applied to the exterior wall of a building. This machine comprises devices for moving the panel in a lengthwise direction and across a plurality of driven planer heads or routers, which cut away thin layers of the front panel surface. Also, the machine is provided with devices for shaping the edges of each panel for edge matching these edges with interfitting parts which may be of shiplap or tongue-and-groove type.

Abstract: This machine cuts and profiles large panels, as plywood, hardboard or similar materials, on one side to provide a large panel having a flat back surface and a profiled front surface, said front surface characterized by a plurality of longitudinally extending, side by side, slightly inclined flat surfaces separated by approximately perpendicular ledges or shoulders of narrow width, thereby imparting to the panel the appearance of lap siding when applied to the exterior wall of a building. This machine comprises devices for moving the panel in a lengthwise direction and across a plurality of driven planer heads or routers, which cut away thin layers of the front panel surface. Also, the machine is provided with devices for shaping the edges of each panel for edge matching these edges with interfitting parts which may be of shiplap or tongue-and-groove type.

Abstract: A cut-to-size saw mechanism having a dual, programable control system is provided for large sheet material, as plywood, hardboard, chipboard, fiberboard, and other large panels to be divided into small pieces by sawing. Sheet sizes in the range of 5 .times. 18' can be cut with a main strip or strips and a side, residual strip, with the residual having a maximum width up to a predetermined amount, such as 2'. Where desired, cutting patterns necessitate two asymmetrical patterns, the saw mechanism can be programmed to trim all 4 edges of a panel, divide the panel into main and residual longitudinal strips and cut the main strip or strips in one pattern length and the residual strip in another selected pattern length. All sawing is done while the panels or strips thereof are held by hold-down rolls, thereby assuring precision sawing. All sawing of the entire panel is programmed by thumb switches from a control panel and the same program may be repeated on subsequent panels until the programming is changed.