.~ Anvil has motion in addition to rotation (i.e., traveling anvil) {2}
512
.~.~ With plural anvils
DEFINITION
Classification: 83/512
(under subclass 510) Device provided with at least two rotatable surfaces, each rotatable about a separate (i.e., noncoextensive) axis.
(1) Note. Included in this subclass are patents disclosing structure in which one anvil cooperates with substantially one-half of a contoured blade, and the other anvil cooperates with substantially the other half of the contoured blade.