US Patent No. 121,565, granted December 5, 1871 to Jules Watteau of Antwerp, Belgium, for a machine that pulls wool from sheepskins. A revolving drum fitted with elastic caoutchouc plates strikes the wool as the operator draws the pelt over an adjustable wooden bar. Alternative bar shapes allow the wool to be sorted partly as it is pulled. The patent has two sheets of drawings and a page of specification and claims.