Abstract: A worm gear clutch mechanism comprising a worm shaft (10), an output shaft (16) having a worm wheel (11), and means to move the worm shaft relative the worm wheel, the worm shaft being movable about a tilt axis that is substantially perpendicular to the longitudinal axis of said worm shaft (10) so that the worm shaft is movable into and out of engagement with the worm wheel.

Abstract: An apparatus for cutting turf, for soil de-compacting and for soil drainage and irrigation. The apparatus has a chassis with a ground engaging means, an adjustable working arm having a chassis-engaging end movably mounted on the chassis and a tool-engaging end having means for receiving a tool. The apparatus also has means for oscillating the tool-engaging end of the adjustable working arm. The oscillating means comprises a drive means mounted on the chassis and a connecting means, preferably a single connecting rod, mounted intermediate the drive means and the adjustable working arm.

Abstract: An apparatus for cutting turf, for soil de-compacting and for soil drainage and irrigation. The apparatus has a chassis with a ground engaging means, an adjustable working arm having a chassis-engaging end movably mounted on the chassis and a tool-engaging end having means for receiving a tool. The apparatus also has means for oscillating the tool-engaging end of the adjustable working arm. The oscillating means comprises a drive means mounted on the chassis and a connecting means mounted intermediate the drive means and the adjustable working arm.

Abstract: A soil core collector comprises a structure including a canopy having a top and a back adapted to be supported from a prime mover with two laterally spaced sides each adapted for pivotal connection to the primer mover. A sole plate extends between the two sides and is formed of a series of connected platelets adapted in use to conform to the contour of the ground over which the sole plate passes. The sole plate has a connecting link arrangement to the back of the canopy and is loosely connected to the top of the canopy whereby in a collecting mode the sole plate rests on the ground with the bottom of each side of the canopy and in an emptying mode the canopy is raised causing the sole plate to be raised and platelets each to move about its connecting link arrangement while being held by its top connection.