(under subclass 518) Apparatus in which the axis of rotation of the earth working element is substantially in the direction of movement of the apparatus over the ground.
(1) Note. For classification under this definition an axis
must be very close to a true longitudinal axis when looked at in plan view. Many commonly used disk plows and harrows rotate about axes which are somewhat more longitudinally inclined than transverse but such devices are not considered to come under this definition and are classified in appropriate subclasses below.
(2) Note. A device disclosed as comprising a tool driven about a horizontal longitudinal axis is classified in subclasses 107+ even if the drive means is not claimed.
