Abstract: An auxiliary breathing apparatus comprising, in accordance with a preferred embodiment, an interface assembly removably interposed and coupled between a compressed gas source and a mouthpiece. The interface assembly includes a pair of vertically-opposed actuators pivotally mounted relative to a valve remotely-located from the compressed gas source. The vertically-opposed actuators extend partially through the interface assembly and partially through the mouthpiece for receipt by a user's teeth. The remotely-located valve connects to a body portion having an insert which receives the remotely-located valve and places it into fluid communication with the compressed gas source. A valve actuator, residing within the insert and having a bore, depresses a valve stem of a source valve which extends partially into the insert at one end and partially into the compressed gas source at an opposite end.

Abstract: A computerized apparatus and method for drilling holes in elongated workpieces. Predetermined locations for holes are input into a computer by visually aligning hole locations on a template with the drilling axis of the apparatus. The computer controls movement of the drill and of the ring segment relative to the drill. The workpiece is moved relative to the drill and is stopped at each predetermined location for drilling.