In order to obtain uniform motion of a conveyer chain with constant velocity, a definite kind of motion must be imparted to chain sprocket 4. This is accomplished by connecting the sprocket to driving disk 1 through links 2 and 3 which converge or diverge in accordance with the position of roller 5 in correcting groove b. As a result, sprocket 4 either lags behind the rotation of disk 1 or leads, with two gradually changing lead and lag phases to each revolution of disk 1. Disk 1 rotates at constant angular velocity about fixed axis A and is connected by turning pair B to link 2. Link 3 is connected by turning pairs C and D to link 2 and to lug a of chain sprocket 4 which is square in shape. Roller 5 rotates freely about axis C and rolls and slides along fixed groove b.
$3187$CmL,ML$