Crushing Insect Sifter
The machine is supported upon two wheels, one in the rear of the other. The body is hopper shaped, with a pair of crushing-rollers at the bottom. At each side there are revolving-wings, which sweeps the insects into the hopper, and in addition to these there are two gathering-fingers, which support the vines during the passage of the machine.
Report of the Commissioner of Agriculture of the Operations of the Department for the Year 1876 (Washington: Goverment Printing Office. 1877) 325