Black Decker Inc.

Horst Kaiser

Rainer Herting

Horst Grossmann

A chop saw pivotably mounted for movement between a raised rest position and a lowered operational position, having a motor driven saw-blade rotatably supported about a shaft, with a saw housing partially encasing the saw-blade and a swinging blade guard which covers the exposed segment of the saw-blade when the saw is in the rest position. When the saw is lowered to its operational position, a linkage system comprising four effective levers and four hinges clears the blade guard, thereby exposing the saw blade to the work piece. To accommodate changing the saw blade while the saw-unit is in its rest position, the effective length of one of the levers can be temporarily reduced, thereby clearing the blade guard from the exposed section of the saw blade. This provides easy access to the saw-blade to be changed.

Chop saw linkage system for moving saw guard

A chop saw has a saw unit connected pivotally about a horizontal axis to a turntable mounted rotatably in a base plate about a vertical axis. An indexing mechanism for locating rotational positions of the turntable comprises catch recesses on the underside of the turntable along a circular arc. A leaf spring is mounted on the base plate and has a free end engageable in the catch recesses upon rotation of the turntable. A release element is movably mounted in the base plate and operable to flex the leaf spring to move the free end thereof out of engagement with any catch recess engaged thereby. Advantageously the leaf spring and the base plate may be integrally molded or cast. Also, the catch recesses may conveniently be formed during casting or molding of the turntable.

Growing community of inventors

Munich, Georgia

Horst Kaiser