Waratah Nz Limited

Deere + Company

Justyn Peter Smythe

Peter Quirke

Alex James Stevenson

Brett James Kaye

Douglas Craig Swinyard

Michael Boys

A timber-working device comprises a frame having a feed axis and a drive system configured to feed at least one stem along the feed axis. The drive system comprises a first drive arm pivotally attached to the frame on a first side of the feed axis, having a first rotary drive having a first wheel. A second drive arm is also pivotally attached to the frame on a second side of the feed axis, having a second rotary drive having a second wheel. The drive system also comprises a third rotary drive having a third wheel, and a fourth rotary drive having a fourth wheel, mounted on the frame on the first and second sides of the feed axis respectively. At least one processor controls operation of the rotary drives, such that in a first mode the speed of the respective wheels of the rotary drives on the same side of the feed axis is substantially the same, and in a second mode the speed of the respective wheels of at least two rotary drives on opposing sides is substantially the same.

Timber-working device and method of operation

A timber-working device having a first pivoting drive arm and a second pivoting drive arm, and a timing link for connecting them. The timing link includes an elongate member having a first end and a second end. A first aperture is at the first end and a second aperture at the second end. At least one of the first aperture and the second aperture is elongate along the length of the member.

Timber-working device and timing link for same

A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, a delimb cylinder, and delimb cylinder hosing. A torso of the frame comprises a box enclosure, and a hosing channel extending through a cavity of the box enclosure. The delimb cylinder is mounted to both the first delimb arm and the second delimb arm and operable to pivot the first and second delimb arms relative to the frame to open and close them. The delimb cylinder is oriented in its longitudinal dimension laterally relative to the torso, and is positioned in front of and floatable laterally relative to the torso. The delimb cylinder hosing is routed from the delimb cylinder through the hosing channel. The hosing channel expands laterally relative to the torso as the hosing channel extends along its length forwardly through the box enclosure.

Protective routing of delimb cylinder hosing

Harvesting head saw section housing

A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, and a single delimb cylinder operatively coupled to both the first delimb arm and the second delimb arm to pivot the first and second delimb arms relative to the frame to open and close them. The first and second delimb arms are otherwise operatively unconnected from one another allowing pivotal movement of each of the first and second delimb arms without corresponding pivotal movement of the other of the first and second delimb arms. The second delimb arm comprises a cam stop defining a variable closure point for the first delimb arm, and the first delimb arm is configured to pivot into closed engagement with the cam stop.

Delimb arm cam stop

Harvesting head

A tree harvester head comprises a drive wheel, a delimb knife, a pin, a wheel-mounting inner sleeve to which the drive wheel is mounted, and a knife-mounting outer sleeve to which the delimb knife is mounted. The wheel-mounting inner sleeve surrounds the pin for rotation of the wheel-mounting inner sleeve and the drive wheel mounted thereto about the pin. The knife-mounting outer sleeve surrounds the wheel-mounting inner sleeve for relative rotation therebetween for rotation of the delimb knife about the pin.

Growing community of inventors

Cambridge, New Zealand

Justyn Peter Smythe