Transmission apparatus and method

摘要

A transmission apparatus includes a chain operatively engaged with a driver sprocket assembly and a driven sprocket assembly, a tensioner bracket including a roller engaged with the chain, a tensioner rod including a plurality of spaced apart flange portions engageable with a brace and a threaded portion extending through an opening formed in the tensioner bracket and screwably attached to a plate. An operator may unscrew the tensioner rod and pass at least one of the flange portions through a slot in the brace to slacken the chain. The operator may also position at least one flange portion in a narrow end of the slot, and screw the tensioner rod to press that flange against the brace to tighten the chain.