No, the Losch uses what is called a bump grate. If you look at the back of a Losch, you will see some very large bolts with what looks like very large valve springs. The stoker uses a motor, blower and gear box very similar to the Keystoker and Yellow Flame. But, instead of moving a pusher, the gear box pushes the whole grate system into the boiler untill it hits the catch, releasing the spring tension causing the grate system to fly back to it's original position with a "BUMP".
My coal man and two of his sons run Losch boilers. They reffer to them as "burn anything boilers" . The one they have in the pole barn next to the coal yard gets fed whatever is lay'in around, nothing bigger than chestnut of coarse. The one in the coal man's house only likes barley coal.