Abstract: Disclosed is an electric sauna heater which includes control and safety apparatus which can include one or more relays (either temperature or current controlled) for switching power to the heating elements of the heater, a thermostat (mechanical or electronic) for controlling the relay(s), a temperature limiter to disconnect power from the heating elements in the event of excessive temperature, sensor elements for the thermostat and temperature limiter and operating controls. The operating controls can include a potentiometer for setting the thermostat, a potentiometer for setting the timer, light-limiting diodes as power indicators, and push buttons for manually energizing and de-energizing the sauna heater. According to the invention, the operating controls are disposed as a separate unit from heater unit and from the remainder of the control and safety apparatus either inside or outside of the sauna room.

Abstract: A microwave oven comprises two microprocessors. One microprocessor is responsive to entry of the data from a keyboard to control an external storage and to provide the data concerning a cooking condition to the other microprocessor. The other microprocessor is responsive to the data obtained from one microprocessor to make a display thereof and to control generation of the high frequency energy based on the data concerning a cooking condition included in the above described data. Transfer of the data from one microprocessor to the other microprocessor is made responsive to coincidence of individual synchronizing signals of the respective microprocessors or is made responsive to interruption to one microprocessor from the other microprocessor.

Abstract: A machine for welding screens formed of spaced longitudinal screen wires welded at a welding station to spaced transverse tie rods, the machine having at the welding station a ram clamping both the screen wires and a tie rod against movement during welding and rearward of the welding station a transfer clamp assembly shiftable longitudinally of the screen wires for feeding the screen wires in predetermined increments to the welding station, the screen wires in a welding operation being clamped by both the ram and the transfer assembly against movement during welding and by one or the other against relative movement at other times.