US Patent No. 32,184, granted April 30, 1861 to William D. Cutler of Millbury, Massachusetts, for a machine that shears wool from sheepskins or pelts in a single whole fleece. The specification describes a frame with a cam-driven reciprocating blade and stationary cutters, feed rolls, a hooked-tooth roll for pulling short wool, a bladed roll and a brush for cleaning burs, and an endless belt that carries off the fleece. The drawing sheet shows the machine in perspective with detail views of the cutters, teeth, roll and brush.