Abstract: An existing pitching machine is retrofitted to realize the capability to deliver a variety of pitches, including change-up pitches. A retrofit kit includes an add-on plate that is bolted to a casting that is attached to a stand. A ball screw actuator is connected on one end to a compression plate assembly on the existing pitching machine and on the other end to the add-on plate. A control box has a plurality of speed and potentiometers. These potentiometers are used to move the pitching machine to a preset speed and angle combination. In some embodiments, a handheld control unit has buttons associated with preset speed and angle combinations.

Abstract: A dispenser for the mixing and dispensing of chemicals is provided which utilizes a draw-through distribution manifold connected to a number of concentrated chemical base solution containers. Solenoids corresponding to each chemical base are selectively operable to allow one chemical at a time to run through the manifold and a pump connected to the manifold outlet to be mixed with water from a general solenoid valve. A system for flushing the manifold is provided wherein a flush port is provided at the opposite end of the distribution manifold from its outlet. After each chemical has run for a period through the manifold, the flush system operates to accurately dilute the dispensed chemical and flush the manifold.