Rotary drum pump with hinged vanes, showing sprocket chain drive; photograph of a plate from Agostino Ramelli: Le Diverse et Artificiose Machine ... , 1588 Rotary drum pump with hinged vanes 1922; circa 1588
Stationary Renold stock chain drive consisting of 57 tooth pinion and 23 tooth sprocket and 3/4" pitch triplex chain. Stationary Renold stock chain drive 1935