Abstract: An adjustable chain drive system is adapted for uses such as moving product through a conveyor system, and can be configured using a chain, belt or similar structure. Two driven sprockets are movable on a slide, allowing the distance between them to be adjusted. In one example, such adjustment allows conveyor belts to be separated by a desired distance. A drive sprocket and endless chain is used in the drive system. In one configuration, the endless chain includes an adjustable chain segment separating the first and second driven sprockets. To compensate for movement of the first and/or second driven sprockets and change in length of the adjustable chain segment between them, lengths of first and/or second secondary adjustable chain segments adjacent to the adjustable chain segment are varied.

Abstract: A compensating roller system is adapted to adjust to size variation of product moving through a conveyor system. In one example, the compensating roller system is used to control a force resulting in deflection of a conveyor belt. In a specific implementation of such an example, a first rail is configured to support a first conveyor belt. A plurality of rollers is attached to the first rail and supports a conveyor belt moving over the rollers. The attachment allows each roller to pivot independently of movement of other rollers. Each of the rollers' movement is against a bias, and allows for deflection of the conveyor belt. A second rail may be configured as the first rail, and oriented define a channel for product movement between conveyor belts carried by the first and second rails.