Probably the barrel knitter and something like Louis Jeusette,
http://www.google.com/patents?id=dpJRAAAAEBAJ&printsec=abstract#v=onepage&q&f=false , Leonard Jehotte or Lajot & Jonlet but I don't think anyone has put their finger on the owner of the initials thus far. I'm sure there are other possibilities.

Kind Regards,

Raimey
rse