J.c. Bamford Excavators Limited

Graham Mark Brooks

Richard Anthony Brooks

Samuel Josef Bell

Kevin W Ford

Christopher Michael Brown

Richard Brooks

Kevin William Ford

A working machine including a ground engaging structure and a propulsion system for moving the working machine via the ground engaging structure. A body is supported on the ground engaging structure, and a working arm is connected to the body and has a carriage at one end for receiving an attachment. A control system is provided for selectively and variably oscillating the carriage.

Working machine and control system

A working machine comprising a ground engaging structure and a propulsion system for moving the working machine via the ground engaging structure. A body is supported on the ground engaging structure, and a working arm is connected to the body and has a carriage at one end for receiving an attachment. A control system is provided for selectively and variably oscillating the carriage.

A method of operating a working machine which includes a main structure and a working arm pivotally mounted at one end on the main structure. The working arm is raisable and lowerable relative to the main structure by a first actuator device, and is extendible relative to the main structure by a second actuator device. In use, the arm carries at another end a working implement which can carry a load. The machine further including a ground engaging drive structure by which the machine is drivable on the ground. The machine has a longitudinal load moment control system which automatically disables operation of the first and/or second actuator devices from increasing longitudinal instability in the event that a predetermined instability is sensed. When the machine senses a ground travelling speed above a threshold speed, the longitudinal load moment control system is disabled.

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Stoke-on-Trent, United Kingdom

Graham Mark Brooks