United States v. Knauth

The merchandise involved in this case is a mechanism made wholly of metal, operated entirely by hand power, and designed and used for shearing or cutting metal plates or bars. A small model thereof is a part of the evidence in the case, and the record shows that the full-sized machine weighs some 1,000 pounds. When in use it is generally stationary and is not designed to be frequently moved. It is referred to as a shearing machine. The mechanism of the machine largely multiplies the hand power applied to it.

Similar machines are operated by power other than that of the hand of the operator,…