Tom blok Photo collection by Th.Schiöler River and wind powered Dragon-bone chains Photo 70
Dragon-bone chains
Gul streg
Photo 511 x 506 pixels, 43,6 K
 
A Thai windwheel without its canvas
The windwheel transmits its power to a chain pump by means of an endless chain. The dragon's backbone also has an endless chain, but the chain is made of wood and every chain link has a board, which works like a piston. The piston pushes an amount of water in front of the board. The chain of pistons runs in a wooden shute. See [73].
[70]