Do you really want clinker or a clinker breaker? Clinker is just the crap in coal (impurities, maybe a little shale, maybe a little iron ore, etc) that fuses together and jams up your grates in a coal furnace. You usually just bust it up and throw it away.
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"Well, I've wrestled with reality for 35 years, Doctor, and I'm happy to state I finally won out over it." Elwood P. Dowd
We don't get good coal now like we used to. We just have to take whatever we can get. The real blacksmith coal is mined in the far east. It is a deep mine coal--no sulphur in it. You can work all day and maybe get a clinker as big as your hand in the bottom of your forge."
The Shaker or clinker breaker I used in my forge came out of a old coal heater that sat in the room with you. I could find very little information on the stove itself.
My Dad actually found it already out of the unit and thought it was a forge grate. It was a #4 in size and Xxxxtrola is all I remember about the name. It was called a shaker because not only did it have jaws to break the clinkers up but the unit was mounted on cast bearings so you could grab the jaws handle and move it side to side A little and shake out the fine ashes. On the far end of the unit the jaw shafts were geared to each other with partial gears to synchronize them.
Stupid MS internet explorer will not let me upload the image now.
Sorry I couldn't be of more help and my Dad is off Deer Hunting and I'm remodeling his bed room. (how the, did that happen?) Oh well I get to eat the Deer.
Brad
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(Larrabee's Law) Half of everything you hear in a classroom is crap. Education is figuring out which half is which.