Abstract: An apparatus and method for controlling selected functions of a machine is provided. The machine includes a seat having at least one armrest supportably positionable adjacent to the seat. An interface module has a connecting portion connectable to the armrest and adapted to shift a working portion laterally between a retracted position and an extended position relative to the armrest. This permits placing the interface module in either a stored mode or a working mode such that it is available to an operator as needed and conveniently out of the way when not needed.

Abstract: An apparatus and method for controlling selected functions of a machine is provided. The machine includes a seat having at least one armrest supportably positionable adjacent to the seat. An interface module has a connecting portion connectable to the armrest and adapted to shift a working portion laterally between a retracted position and an extended position relative to the armrest. This permits placing the interface module in either a stored mode or a working mode such that it is available to an operator as needed and conveniently out of the way when not needed.

Abstract: Construction machines have, in some instances been provided with an undercarriage that may be varied in width. The method by which these undercarriages are moved require support personnel, auxiliary equipment and an extensive amount of time to achieve the desired width. The present invention provides an undercarriage of variable gage wherein movement of the undercarriage components, between extreme positions may be obtained in a very timely and efficient manner from within the operator station of the machine.