[AT] Slightly OT: horse drawn implements

[Alan Nadeau]

Hay loaders were before my time, that video is the first time I've seen one 
in operation.

While I've seen a bunch of then rusting away on farms I have never seen one 
that used the chain conveyor to load the hay.  The only ones I've seen had a 
metal tray (for want of a better word) that the hay slid up, propelled by 
what looked like rake tines on bars that raun up the inclined tray.  Those 
bars were on a series of offsets on a shaft that kept them moving to push 
the hay upwards.  Pretty ingenious mechanism, as each bar moved it dipped 
down towards the tray and pushed upwards, then it was lifted clear of the 
hay and moved back down for another bite.