Abstract: An automatic animal feed dispenser system comprising one or more batteries of hoppers for temporarily storing feed, each hopper having an outlet adjacent the base thereof through which the feed can be dispensed is provided. Each battery of hoppers is provided with a slide member having a plurality of holes therethrough, the slide member engaging the outlets of all of the hoppers in the battery. The slide member is articulated back and forth such that each of the bores through the slide member periodically receives a desired quantity of feed from a hopper and thereafter drops the feed for animal consumption. The quantity of feed received by each of the bores through slide member can be independently varied by means of inserts which are adapted to be positioned within or removed from a bore so as to decrease or increase the effective volume thereof. The slide members associated with plural batteries of hoppers can be articulated in tandem.

Abstract: An apparatus for aerating fish ponds utilizes a cylindrical brush mounted for rotary motion below the top of a dam or headwall. Water passing over the dam and falling into a fish pond below the dam falls onto and over the cylindrical brush causing the brush to rotate. The rotating brush breaks up the falling water into droplets as the water passes through the brush bristles. Below the rotating brush, the water droplets fall through an air-water mixing zone where atmospheric oxygen is dissolved by the water droplets thus increasing the dissolved oxygen concentration of the water.