Abstract: First and second shaving dies are mounted one above the other and are respectively provided with continuous shaving edges disposed adjacent to contoured annular facial surfaces which draw the shaved material away from the work piece as the shavings are removed by the associated shaving edge. An air nozzle mounted in proximity to the first die directs a jet of air across the contoured facial surface of the first die to blow the removed material away from the first die to prevent its interfering with the operation of the second die. The second die is located directly below the first die and is provided with a plurality of angularly spaced troughs lying immediately adjacent to and below annular facial surfaces on the second die for carrying the shavings from the shaving edges of the second die to a sump located below the second die.

Abstract: A wireless hands-free conference telephone system includes an FM transmitter having multi-directional sound pick-up capability and battery power is adapted for remote wireless transmission of sounds originating in the area adjacent the transmitter to a unitary receiver, amplifier and voice switcher adapted for signal conducting connection to a conventional telephone system. The receiver portion of the unitary system is adapted for receiving the signal from the FM transmitter. The amplifier provides power to drive loudspeakers which radiate the sound incoming from the telephone system. A voice switching circuit is positioned between the telephone, the transmitter and the loudspeaker circuit, and is able to ascertain signal strength from the transmitter circuit and the incoming telephone line, discern which is the stronger signal, and increase the gain of that signal while decreasing the gain of the opposing signal.