A riving knife mechanism for a power saw

摘要

The present invention provides an apparatus for a power saw of the type which has a table top, a rotatable circular saw blade that is vertically adjustable relative to the table top, the table top having an opening through which the saw blade can extend, the blade being configured to cut a work piece as the work piece is forwardly moved from a forward position to a rearward position, said apparatus comprising:a riving knife mechanism (22) releasably mounted to the saw rearwardly of the blade, and being configured to be adjustable between retracted and extended positions relative to the blade, the mechanism having an elongated relatively thin knife (34) that is mounted substantially in the same plane as the blade, the outer upper end of said knife being capable of being positioned below the table top when in its retracted position and extending to an elevation at least approaching the upper reach of the blade when in its extended position.