La chaîne a godets des thermes de Barzan (Charente-maritime) : une première approche

Wells and Bucket-Chains: Unforeseen Elements of Water Supply in Early Roman London

“…It is clear, however, that, like the Cosa device, the bucketchain would have been linked together with rope with no iron linkage being used. 63 The well-preserved woodwork is unparalleled at either Cosa or London and significantly included a slatted cog wheel or lantern drum, which was originally mounted horizontally on a square drive-shaft with rounded axle ends. The lantern drum was a compact structure with an internal width of only c. 0.57m, around which the bucket-chain would have been drawn whilst engaging with or gaining traction with the open radial slats.…”

“…It was surmised that the absence of surviving wood or perhaps even leather buckets from the bucket-chain in the ideal waterlogged conditions at the bottom of the well suggests that the water containers were made of metal and were possibly similar to the 'bronze buckets' described by Vitruvius (see above). 64 Such a system seems to be overly elaborate and would have been expensive to make and potentially more difficult to work. It seems likely therefore that the water containers would have been made of wood and of similar 'open-topped' form to the wooden boxbuckets of the Cosa and London bucket-chains which were also in operation during the second century A.D.…”