Patent ID: 6644163
Filing Date: 2003-11-11
Classification: B23D,Y10T

Abstract:
An adjustable worktable for a band sawing machine, comprising:a band saw machine workpiece worktable; a base provided below the band saw machine worktable; two arc-shaped turning pieces affixed to a bottom side of the band saw machine worktable and wherein said base positioned between the two arc-shaped turning pieces, each of said turning pieces including a first arched guiding slot and a second arched guiding slot and a rack gear; a guiding shaft extending through a hole in the base and into each of the first arched guiding slots of the turning pieces; an adjusting shaft extending substantially parallel to the guiding shaft and through a second hole in the base such that two ends of the shaft terminate adjacent an outside periphery of the arc-shaped turning pieces; each of said two ends of the adjusting shaft including a pinion gear engaged with each of the rack gears of said turning pieces; one end of said two ends of the adjusting shaft including a turning wheel knob located on an outer side of the pinion gear such that a user can grasp the knob and rotate the knob thereby rotating the turning pieces and the worktable; a pressing shaft extending substantially parallel to said guiding shaft and through a third hole in the base and into each of the second arched guiding slots of the turning pieces; the pressing shaft includes a threaded end adjacent a blocking portion and an opposing stopping portion end, said stopping portion end includes two engagement elements adjacent to and engageable with an outside portion of the turning pieces so as to squeeze the turning pieces; a locking handle member positioned on the outside portion of the turning pieces and disposed around the pressing shaft; said handle member including a threaded hole engaged with the thread end of the pressing shaft such that when the user grasps and rotates the locking handle member the two engagement elements moved toward each other thereby pressing against the turning pieces to lock the band saw machine worktable in place.