I think you need to produce the mechanical process you are patenting and at least show it is viable before patenting it?
That requirement was abolished (in the US, at least) in 1880. I've been told that the USPTO still asks for working models when people try to patent perpetual motion machines, but I don't know if this is true.
That requirement was abolished (in the US, at least) in 1880. I've been told that the USPTO still asks for working models when people try to patent perpetual motion machines, but I don't know if this is true.