.~ Having traction-rotated tool (e.g., glass cutters)
DEFINITION
Classification: 30/164.95
(under subclass 164.9) Device wherein the marking means comprises a disk having a cutting edge on the radially outer periphery thereof and turnable about its central axis during operation, which disk is driven by frictional engagement with the workpiece.
(1) Note. Many of the patents in this subclass are particularly adapted to mark hard glass or hard glass-like material. See Class 65, Glass Manufacturing, subclass 112 and the collection of notes thereunder for glassworking or treating combined with cutting.
