Abstract: A feeder for horses or other livestock includes a housing having a compartment with an air-permeable floor for subjacently supporting a pile of hay, or other type of livestock feed. The compartment is superiorly accessible for allowing feeding from atop the pile of hay or other type of livestock feed. A blower located downstream of the compartment can draw air downwardly through the compartment. With hay or other type of livestock feed loaded into the feed compartment, the blower can draw air downwardly through the compartment and through the floor. Thus, airborne material from the hay or other type of livestock feed is drawn away from an animal that may be feeding from the top of the compartment.

Abstract: A hand tool can remove burrs from an aperture in a workpiece. The tool has a hollow handle and a shaft rotatably mounted in the handle to reciprocate axially therein. The tool has a thruster for urging the shaft to extend axially. A rider is mounted in the handle for engaging and rotating the shaft as it extends axially from the handle. This rider can allow axial retraction of the shaft into the handle without rotation. A deburring bit (e.g. a countersink bit) is mounted at an outer end of the shaft. Thus the bit turns when the shaft extends as the handle withdraws from the workpiece.