Two-bladed table saw with selective stationary blade
OwnerHarley D. James, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A table saw having a stationary blade and a parallel moveable blade for straightening uneven dimensional lumber of the type used in cabinetry and other relatively fine woodworking. The table saw has a workpiece support frame with a lateral blade opening allowing the moveable blade to be shifted laterally and adjust the spacing between the blades. Powered feed rollers located above the table are used to clamp and feed a workpiece through the table while preventing kickback. A sacrificial fence including a blade guard recess is associated with the stationary blade, and includes a shutoff switch automatically activated to disable the stationary blade for solo use of the moveable blade.
Claims10
A two-bladed table saw comprising:
- a single table comprising a saw blade housing enclosing first and second saw blades and further comprising an upper frame defining a planar workpiece supporting surface;
- the first saw blade comprising a stationary circular saw blade mounted in the housing at a first side of the table with a portion extending from the housing above the planar workpiece supporting surface;
- the second saw blade comprising a parallel, independently-driven, laterally moveable circular saw blade mounted in the housing with a portion extending from the housing above the planar workpiece supporting surface, the moveable blade coaxial with the stationary blade and having a home position at an opposite second side of the table, the home position defining a maximum spacing of the moveable blade from the stationary blade;
- the planar workpiece supporting surface comprising a front support edge, a rear support edge, a stationary side support edge associated with the stationary blade, and a moveable side support edge associated with the moveable blade in the home position and including a moveable portion moveable away from the home position and the moveable side support edge with the moveable blade;
- the front, rear, stationary side and moveable side support edges defining a frame with an open lateral blade pathway in the planar workpiece supporting surface of the table between the front, rear, stationary side and moveable side support edges, the open lateral blade pathway defining an open area of travel for the moveable saw blade and the moveable portion of the moveable side support edge in the workpiece supporting surface between the stationary and moveable side support edges, the open lateral blade pathway further having a front-to-rear width between the front and rear support edges greater than the diameter of the moveable blade;
- wherein,
- the moveable blade and the moveable portion of the moveable side support edge are mounted on the table for lateral movement together as a unit in the open lateral blade pathway between the home position and an away position defining a minimum spacing between the moveable blade and the stationary blade, the movement of the moveable blade and the moveable portion of the moveable side support edge toward the away position reducing the width of the open lateral blade pathway between the moveable and stationary blades.
Dependencies are inferred from the claim text.