Abstract: A special blending vessel lends itself to shifting from one continuously blended product to the next in a continuous flow with a sharp change so that there is substantially no mixing of the two products at the change over. There are two sets of ingredient inputs and product outputs for the blending vessel. And, there is a follower type divider that separates one set of ingredient inputs and product output from the other set. When a shift is to be made from the one product to the next, the ingredients of the second product are introduced and blended in the vessel while displacing the remainder of the one product without mixing therewith. Then the outputs are switched so that the second product follows with an abrupt change from the first product to the second.

Abstract: A retainer especially for use with impact tools that have a drive shaft adapted to removably receive a tool socket. The socket and shaft have a diametric hole that is in alignment when the tool is attached in driving relationship to the shaft. The retainer has a pin that is adapted for extending through the hole, and there is an integral flexible ring with the pin situated diametrically across it and attached to it at one end.