Undercut saw
First Claim
1. An undercut saw including a rotatable work support table having an elongated slot therein, a rotatable saw blade operatively mounted beneath said table selectively to be raised and lowered through said slot, a saw blade guard and workpiece clamp spanning said slot above said table, said guard and clamp being movable toward and away from said table, respective fluid power means for said guard and clamp and said saw blade sequentially operative to move said guard and clamp downwardly into engagement with a workpiece on said table and then to move said saw upwardly through said slot, two laterally spaced control devices, one at each side of said table, adapted when simultaneously manually actuated to operate said respective fluid power means, means sequentially operative to lower said saw and then to raise said clamp when the workpiece is cut or when the control devices are prematurely deactuated prior to finishing the cut, a pivotal stop plate carried by said rotatable table, said stop plate nomally being positioned to engage selectively circumferentially spaced fixed abutment blocks to provide index stops for said rotatable table, and an actuator carried by said table operative when depressed to pivot the stop plate to a position permitting the table to be rotated past an abutment block without engagement.
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Accused Products
Abstract
An undercut saw having a rotating blade mounted beneath a table for selective raising and lowering movement through a table slot by operation of fluid power means. A blade guard and workpiece clamp is mounted above the table for selective movement toward and away from the table by operation of fluid power means. A pair of manually operable series connected control devices operate the fluid power means.
121 Citations
11 Claims
- 1. An undercut saw including a rotatable work support table having an elongated slot therein, a rotatable saw blade operatively mounted beneath said table selectively to be raised and lowered through said slot, a saw blade guard and workpiece clamp spanning said slot above said table, said guard and clamp being movable toward and away from said table, respective fluid power means for said guard and clamp and said saw blade sequentially operative to move said guard and clamp downwardly into engagement with a workpiece on said table and then to move said saw upwardly through said slot, two laterally spaced control devices, one at each side of said table, adapted when simultaneously manually actuated to operate said respective fluid power means, means sequentially operative to lower said saw and then to raise said clamp when the workpiece is cut or when the control devices are prematurely deactuated prior to finishing the cut, a pivotal stop plate carried by said rotatable table, said stop plate nomally being positioned to engage selectively circumferentially spaced fixed abutment blocks to provide index stops for said rotatable table, and an actuator carried by said table operative when depressed to pivot the stop plate to a position permitting the table to be rotated past an abutment block without engagement.
- 7. An undercut saw comprising a turntable rotatable about a vertical axis and having a slot therein, a pair of parallel guide rods secured at their upper ends to the underside of said turntable, a vertically extending plate mounted on said guide rods for vertical movement therealong, a saw drive motor mounted on one side of said plate with its drive shaft extending through said plate, a saw driven by said motor and mounted on the other side of said plate to move through said slot when said plate is elevated, a blade guard and workpiece clamp positioned above said turntable over said slot, posts at the ends of said clamp extending downwardly through said table, fluid power means beneath said table vertically to move said clamp, and means selectively adjustably to connect said clamp to said posts to very the vertical spacing between said clamp and table for different workpiece thicknesses.
Specification