KIng Suction Machine
The King Suction Machine was considered one of the most effective locust extermination machines of its time. It employed a revolving fan to vacuum locusts into a crushing chamber, then ejected their carcasses back down into the soil.
Report of the Commissioner of Agriculture for the year 1877 (Washington, District of Columbia: Government Printing Office, 1878) Plate VI, after page 264
Courtesy the private collection of Roy Winkelman