Abstract: A computerized system for transacting the purchase and sale of consumer motor fuels between motor fuel merchants and retail consumers through software on a mobile or desktop connected device for periods in the future through the simultaneous execution of multi-party, multi-layered contingent transactions and pricing algorithms to ensure that all inter-related motor fuel merchant transactions are simultaneously transacted upon a retail consumer purchase execution. Motor fuels include refined products such as gasoline and diesel fuel, renewable fuels (e.g. ethanol, biodiesel), natural gas (including liquefied natural gas), jet fuel and electricity.

Abstract: Apparatus for cutting a workpiece includes a rotatable blade and a rotatable workpiece holder mounted on a pivotable swing arm and rotated in a selected direction by drive elements. The swing arm pivots downward into an engagement position so that the workpiece is urged into resilient contact with the cutting surface, and radial irregularities of the surface of the workpiece are resiliently tracked by the pivoting swing arm.