US 4,061,066 A · Multiple-blade band saw

Abstract

A band saw having a frame supporting a main shaft on which driven wheels of progressively decreasing diameter are rotatably mounted. Idler wheels are journalled on the frame and endless band saw blades are carried by the several driven and idler wheels to provide transversely spaced cutting runs along one side of the frame. Drive is transmitted to one driven wheel, thence through a system of gears to the other driven wheels to move all the cutting runs at the same speed. The driven wheels are rotatably mounted on eccentrics carried by the main shaft and the idler wheels are movable by a cam shaft arrangement relative to one another across the frame. The main shaft and cam shaft are connected by a mechanism which allows both shafts to be rotated simultaneously to shift the position of the several wheels and thus selectively adjust the spacing between the cutting runs.

Claims5

Dependent claims

A multiple-blade band saw comprising a frame, a main shaft rotatably mounted on the frame;

large intermediate and small driven wheels rotatably mounted on the main shaft for relative movement radially of said shaft;
an idler wheel associated with each driven wheel, mounting means individually journalling the idler wheels upon the frame for relative movement laterally of said frame, an endless saw blade trained over each driven wheel and associated idler wheel, said saw blades providing parallel cutting runs normally radially spaced apart with respect to the longitudinal axis of the main shaft, drive means for rotating one driven wheel, a drive train interconnecting said one and the other driven wheels to rotate all driven wheels at substantially the same peripheral speed, and adjusting means for simultaneously shifting the relative positions of the driven and idler wheels whereby to selectively vary the radial spacing between the cutting runs.

Dependencies are inferred from the claim text.

Multiple-blade band saw

Life of this patent

Multiple-blade band saw

Life of this patent

Abstract

Claims5