The screw take-up is the manual type in which screws are provided to compensate for increased chain length. The screws must be manually adjusted. Frequency of adjustment will vary with such factors as conveyor size, overall chain length, trolley loads and conveyor speed; recommended schedules for screw take-up adjustment will be developed by Anchor engineers to meet the needs of a particular installation.

The spring take-up is the most economical automatic type available. It is identical with the screw take-up except that heavy coil springs replace the screws. This type is satisfactory where short chain length is involved.