TRIMMER SAW WITH CHAIN BELT Russian patent published in 2018 - IPC B27B5/20 

FIELD: woodworking industry.

SUBSTANCE: invention relates to the woodworking industry, in particular to mechanical saws. Mechanical saw comprises an engine resting on a base with a workpiece support surface, a cutting member, a transmission linking the motor to the cutting member. Transmission comprises a first transmission mechanism extending from the engine to a location spaced from the drive element, and a second transmission mechanism connecting the first transmission mechanism to the drive element. Second transmission mechanism includes a drive sprocket mounted on an intermediate shaft for co-rotation with an intermediate shaft and a driven pulley of the first gear and having a plurality of teeth configured to engage with a chain extending from the drive sprocket to the driven sprocket. Second transmission mechanism includes a tension mechanism cooperating with the chain between the driving sprocket and the driven sprocket of the second gear and comprising an adjusting device and an asterisk configured to interact with the chain. Adjusting device is designed to position the sprocket closer to the chain or further from the chain.

EFFECT: improved accuracy of cutting.

9 cl, 4 dwg