And then you had a sort of a gadget what would slide the st there was strap coming from the pulley of the oil engine onto There was a loose pulley and there was a gadget, you could slide the strap onto the loose pulley, then that that was only just er turning loose of course, then you slid it back on the fixed and it's be turning all this shafting along the barn and then there were pulley sets on that and in direct line with  crusher and chaff cutter and the scrapping machine you had a a strap form those.