Swing saw for cutting metal conduit

Details Swing saw for cutting metal conduit Swing saw for cutting metal conduit

1987-05-18

1989-04-18

Yost, Frank T.

Cutlery

Means for cutting elongate, strand-encircling sheath

Helically wound metal sheath

30 92, 30378, 83168, B25D 900

Patent

active

048214140

ABSTRACT:
A tool for cutting a workpiece comprising a tool body; means on the tool body for securing the workpiece; a saw blade movably supported on the body for cutting the secured workpiece, the saw blade having a plurality of cutting teeth movable in a sawing direction and a feeding direction in a cutting plane extending through the workpiece; and a bushing on the tool body rotatable about an axis normal to the cutting plane, the bushing being engagable on its periphery by the saw blade teeth and rotatable thereby, after cutting of the workpiece, to restrict movement of the saw blade in the feeding direction while permitting movement of the saw blade in the sawing direction. In the preferred embodiment the bushing includes teeth on the periphery which are of comparable size and spacing to the teeth of the saw blade to clean the latter. The bushing may be made of a bronze porous powder metal which is impregnated with a lubricant for lubricating the saw blade teeth.

REFERENCES:
patent: 417093 (1889-12-01), Robison
patent: 991947 (1911-05-01), Campbell
patent: 1075730 (1918-10-01), Ross
patent: 1423504 (1922-07-01), Vernon
patent: 4437237 (1984-03-01), Ducret

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