(under subclass 199) Subject matter wherein the tool element and all the structure on which the tool is mounted are held against gravity by, and guided for movement relative to, stationery work.
(1) Note. Included herein is a disclosure of a device that deforms a rail as it rides along that rail.
(2) Note. The disclosure of a patent placed in this subclass clearly indicates that the deforming instrumentality is supported by the work.
