Abstract: A sawdust discharge guiding device of a carpenter circular saw machine is provided, including a dust shielding cover including a fixed cover body including first and second end walls and first and second lateral walls having bottoms to which a dust discharge portion having a dust discharge opening is connected; a movable shield plate including a pivot through-hole; a pivot assembly pivotally connected between a pivot aperture formed in the fixed cover body and the pivot through-hole of the movable shield plate to allow the movable shield plate to rotate about the pivot assembly; and a torsion spring having a middle through which the pivot assembly penetrate and having one end supported on the first lateral wall of the fixed cover body and an opposite end supported on the movable shield plate to provide a biasing force for upward rotation to the movable shield plate.

Abstract: A lift device for a dust collection box of a wood working machine includes a driving shaft unit, a passive shaft unit, a rotary unit, a break unit, a pulley unit and a cable unit. The driving shaft unit and the passive shaft unit are connected to the underside of the working table. The driving shaft unit includes a first gear and a second gear. The passive shaft unit includes a third gear which is engaged with the second gear. The rotary unit is connected to the driving shaft unit to rotate the driving shaft. The break unit is pviotable between a break position and a loose position. When the break unit is at the break position, the break unit prevents the driving shaft from self-rotating. The lift device lifted or lowers the dust collection box by cooperation of the pulley unit and the cable unit the lift device.

Abstract: A saw machine includes a seat disposed in a housing, two frames rotatably secured to the seat with pivot pins and each having a sector gear and a saw blade, and a driving device for driving the saw blades. A shaft is rotatably secured to the seat and has a worm engaged with the sector gear of one of the frames, to rotate and adjust the frame relative to the seat. A conduit is rotatably engaged on the shaft and has a worm engaged with the sector gear of the other frame, to adjust the other frame relative to the seat. A support device includes a block having an orifice to rotatably receive the shaft and to stably support and retain the shaft to the seat.