Blade guard lift for power saw
AssigneeRalph S. Rosen
InventorJames C. Bennett
Life of this patent
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Abstract
A motor operated power saw is mounted on a table by employment of a tiltable platform so that the saw is lowered to cutting position by manually depressing a handle. Surrounding the upper half of the saw blade is a composite guard consisting of a main guard and a movable nose guard which, when the blade is in elevated non-operating condition, cover the exposed portion of the blade. The main guard is pivotally mounted on the tiltable platform and is provided with a cam follower which, upon engagement with a cam track on the table, automatically elevates the main guard and accompanying nose guard as the blade is advanced through a cutting operation.
Claims10
A guard device for a power operated bench saw wherein a frame is provided with a work surface for supporting a work piece and a motor actuated saw blade is carried by a movable structure on the frame by means of a manually actuatable leverage having attachments respectively to the frame and the movable structure for moving the saw blade between an elevated non-operating position above the work surface and a progressively lowered cutting arc for advancing the blade past the work surface,
- said movable structure including a guard device comprising a main plate means having a tiltable mounting on said movable structure,
- a cam follower on said guard device spaced from the tiltable mounting and a cam track in fixed position on said table receptive of said cam follower, said cam having a contour productive of a progressive relative movement of said plate means resulting in a clearance between said guard device and the work piece as the blade is advanced through said cutting arc.
Dependencies are inferred from the claim text.