Abstract: An improved method and device for mechanically producing pretzels. The method and device produces strings of dough having precisely predetermined cross-sectional and longitudinal dimensions. The invention provides a high throughput rate of pretzels and low rejection rate, together with simple operability, such that the device is cost-effective even in small bakeries.

Abstract: Disclosed is an improved diffuser assembly for use in ventilating, heating and air conditioning installations where it is necessary to conduct the air flow of a blower through air discharge fittings to air outlet nozzles such as those in the passenger compartment of an automobile. The air diffuser according to the present invention is of simple configuration, inexpensive to produce and requires only a small amount of space for installation. The diffuser has a cylindrical housing, with an intake fitting positioned on one frontal side and a plurality of air discharge orifices located successively with respect to each other along a circumferential surface of the cylindrical housing. Air discharge fittings are adapted to be attached to the discharge orifices. Coaxially positioned in the housing a rotating drum is provided.

Abstract: Disclosed is a method for controlling the volume of a fluid, e.g., air, moving through a duct system, e.g., a ventilating system for a vehicle, comprising the steps of moving the fluid through an inlet of the duct system under dynamic pressure; conducting the fluid through the duct system by means of propulsion system driven by an electric motor, wherein the electric current drawn by said motor varies with changes in the dynamic pressure; and adjusting the amount of fluid admitted into the duct system in response to the current drawn by the motor and thus, also responsive to the dynamic pressure, this adjusting step thereby maintaining a constant volume of fluid moving through the air duct system. Also disclosed is an apparatus for carrying out this method.

Abstract: Air conditioning apparatus for conditioning the air supplied to a vehicle passenger space is provided which includes an air conditioning air cooling evaporator and an air heater unit arranged in series. An evaporator bypass duct extends in bypassing relationship to the evaporator and a heater bypass duct extends in bypassing relationship to the heater. To control the temperature of the air conditioned by the apparatus two temperature mixing air flaps are provided, one air flap controlling the proportion of air flow through the evaporator and its bypass duct and the other air flap controlling the proportion of air through the heater and its bypass duct.

Abstract: The present invention relates to a grounding switch having a fixed switch piece attached to an equipment part to be grounded and a switch piece displacable relative to the fixed switch piece by a drive. The switch pieces partially form a switch-piece overlap in their closed position. It is desirable to arrange such a grounding switch such that, while maintaining its geometrical dimensions, it can switch even large currents such as short-circuit currents without the main contacts being overloaded by the switching arc. By the present invention, the switch pieces are each equipped with at least one main contact and at least one sparking contact surrounded at least partially by the respective main contact. One of the two sparking contacts is arranged as a bush and the other as a pin. The bush includes a follow-up contact or follow-up pin which is movable in the direction of displacement of the displacable switch piece. The follow-up contact is located substantially within the interior of the bush.

Abstract: A test circuit for testing the circuit making or circuit breaking capability of a high voltage apparatus includes a high current source in a high current circuit and a high voltage source in a high voltage circuit. The apparatus to be tested is disposed in the high voltage circuit, and a switch with an explosive actuator is provided in the high current circuit to connect the apparatus thereto during testing. The explosive actuator is connected with a voltage source in the high voltage circuit for ignition thereof by the preignition of the tested apparatus.

Abstract: A wrap-winding spinning machine for producing wrapped yarns having draw frames for attenuating slivers, wherein one wrap-winding apparatus is associated with each draw frame is proposed, with the wrap winding apparatus further including a high speed rotor and a yarn channel coaxial with the axis thereof, the rotor associated with a driven hollow spindle and a bobbin supported thereon and a balloon limiter supported on the machine frame by upstanding opposed ribs. The bobbin supports a centrally apertured cap device with the cap device having a continuously curved, convex end face with a sharply curved rim that merges with the end disc of the bobbin. The aperture in the cap device is arranged to receive the feed of the winding thread and the sliver as it passes downwardly into the yarn channel and is emitted as a finished wrapped thread.

Abstract: A temperature dependent electronic control switch, especially suited for an automatic temperature control in vehicles, including one or more NTC resistors as sensors in a bridge circuit, an amplifier, to amplify the signals from the sensors, a solenoid for producing a variable magnetic field from signals received by the amplifier, an iron strip, an air nozzle connected to a vacuum, a servomotor connected between the air nozzle and the vacuum, and a control flap. The iron strip, moving in response to the magnetic field from the solenoid, obstructs an opening in the air nozzle, thereby changing the pressure felt by the servomotor and thereby causing the control flap of an air-conditioner or heater to move in a predetermined manner to mix air of different temperatures.

Abstract: In order to enable two different internal circuits to be controlled from one input pin of a C-MOS IC said pin is connected directly to an input of a first circuit and via the emitter-collector path of a transistor to the input of a second circuit. The base of this transistor is connected to one of the supply voltages, so that this transistor can conduct only when the voltage on said input pin is higher or lower than the positive or negative supply voltage respectively.

Abstract: A device for controlling blower motors for air conditioning units especially for those installed in vehicles. For eliminating changes in air flow due to changing dynamic pressure at the blower air inlet; the blower is controlled by maintaining blower motor current constant according to an adjustable set point and according to the dynamic pressure a pressure detector at the blower inlet the set point is varied to control blower rpm in response to changing dynamic pressure.

Abstract: A battery powered electronic timepiece of the type comprising an oscillat adapted to generate high frequency electric pulses, a frequency divider arranged to receive said high frequency electric pulses and to deliver low frequency electric pulses, a stepping motor adapted to be controlled by said low frequency electric pulses and to drive display means and a battery arranged to energize the oscillator, frequency divider and stepping motor, a condensor is coupled to the oscillator and frequency divider and a switch, which receives control signals from the frequency divider, is arranged to provide a low resistance path from the battery to the condensor in the intervals between motor stepping pulses, and a high resistance pass from the battery to the condensor during motor stepping pulses, whereby during motor stepping pulses the oscillator and frequency divider are energized substantially entirely from the condensor.

Abstract: A device for the temperature regulation of water which is used in motor vehicle heating and air conditioning systems. This device contains a primary and a secondary circuit which is linked by a cruciform connector in a hydraulically switchable manner. The primary circuit includes a cooling circuit heat exchanger and a cooling water pump, with the secondary circuit containing a heater heat exchanger and a water pump driven by an electric motor.