I'm sorry I haven't replied sooner, but the system wouldn't let me!My great-grandfather was Charles, who married Katherine Veronica Herzog.Charles was actually named Karl(or Carl, I don't know which spelling is right) and he later changed it to Charles.
I find the guard hair invention interesting.I was told that he invented something called a universal chuck.This is a part that fits on a lathe.My grandmother, Bertha Mischke, told me that her ancestors were furriers.In this case, the invention you mention makes more sense.
the dates I have are as follows:
Karl von Mischke: 1851-1927
Berthe Schoen: 1851-?
They immigrated from Berlin, Germany in1882
Karl (Charles): 1879-1925 He came over with his parents as a very young child
He married Katherine Herzog: 1879-1923
I hope this message posts. I have tried several times to reply without success.I hope to hear from you again soon.