Abstract: A reel for a reel mower having reference grooves formed in the shaft thereof and usable as datum to ensure ends formed in the shaft are concentrically aligned and for sharpening and truing maintenance operations.

Abstract: A reel for a reel mower having reference grooves formed in the shaft thereof and usable as datum to ensure ends formed in the shaft are concentrically aligned and for sharpening and truing maintenance operations.

Abstract: A process and apparatus for increasing the mass flow of supercritical CO2 per unit of time over an extraction bed for extracting essential material from organic material. An auxiliary pump feed is configured to receive an auxiliary process stream from a main process stream discharged from an extraction bed containing organic material. An auxiliary pump is connected to the auxiliary pump feed and is configured to create negative pressure in said auxiliary pump feed, thereby siphoning the auxiliary process stream from the main process stream and pushing it through an auxiliary pump discharge, where it is recirculated back to the extraction bed with the main process stream, whereby the mass of supercritical CO2 in the amplified process stream flowing over the organic material in the extraction bed is greater than the mass of supercritical CO2 in the main process stream per unit of time.