Abstract: The head holder of the instant invention is intended for use on a cattle chute, the chute having a vertically elongate opening at one end thereof allowing passage of the head only of animal restrained in the chute therethrough. The head holder includes a head catch for engaging the head of an animal adjacent to the animal's neck and positioning means for positioning the head catch. The positioning means includes a pivotable mount allowing selective positioning of the catch between a head engaging position and a disengaged position and elevating means for selectively raising and lowering the head catch.

Abstract: A grinding machine for grinding the cutters in left- and right-hand cutter links in saw chain. A pair of grinding wheel assemblies disposed on opposite sides of a saw chain support are actuated in turns to bring the wheels in the assemblies into a cutter link positioned on the saw chain support. Indexing structure positions the saw chain with a cutter link occupying a grinding station while supported on the chain support.