On YouTube there is a guy who restores and uses all types of antique machines. I don't have a name but I've stumbled on his informative videos a couple of times.
Here is a short discussion of one -
https://www.practicalmachinist.com/f...k-here.368850/
You might not get much from the patent office. Basically ideas are patented. Those ideas could be used on numerous machines so you may only get details on a portion of the machine. I couldn't find a PDF operating manual.