Abstract: A device for preventing contamination of a clean room during a drilling or cutting operation. A box-like chamber is provided for containing a power driven tool such as a drill. One wall of the chamber includes an opening for access to the workpiece (e.g. a wall to be cut or drilled). Another wall includes an access port with a rubber glove for operating the power tool. A pigtail electrical outlet within the chamber provides electrical power to the tool. A similar chamber may be used on an opposite side of the wall being drilled in the event it must be kept clean also. Both chambers include a port for attachment to a vacuum source such as a conventional vacuum cleaner and a port for entry of air to divert debris away from the workpiece and into the vacuum cleaner. In another embodiment, a small enclosure is clamped to the body of a drill or similar tool. The enclosure includes a vacuum port for removal of the debris.

Abstract: A log supporting rack has a pair of structurally unconnected individual frames adapted to be arranged in selectively variable spaced apart side by side relation on the hearth of a fireplace. Each frame is formed from a one piece metal rod bent upon itself to provide a substantially Z-shaped base from the ends of which vertical sections upstand with one section being taller than the other. The vertical sections terminate in upwardly facing supporting cradles in which top rods seat with the end of each such rod at the higher vertical section being bent downwardly so as to locate the rods in inclined placement on the upper ends of the vertical sections whereby logs are positionable on the top rods so as to extend between the frames in a declined pattern over the fire from the front to the back of the hearth of a fireplace.