Here is the weighbridge, and here great bundles of heavy-smelling fleeces are unloaded.
"Hyacinth 1906"
George A. Birmingham
In the next, and essential, stage the turning of the water wheel was regulated by an "escapement" mechanism consisting of a weighbridge and trip levers so arranged that the wheel was held in check, scoop by scoop, while each scoop was filled by the dripping water, then released by the weighbridge and allowed to rotate until checked again by the trip-lever arrangement.
"On the Origin of Clockwork, Perpetual Motion Devices, and the Compass"
Derek J. de Solla Price