Abstract: Bulk material that is difficult to feed, such as glass fibers, is fed from a storage bin into a feeding chute driven by a vibratory drive which vibrates the chute in a longitudinal direction of the chute, that is, in the feed advance direction of the chute. The chute may be a so-called loss-in-weight feeding chute. In order to assure a uniform, constant material flow without any bunching and without any gaps in the flow for an accurate feeding, the material flow is exposed or influenced by a further vibration effective in a direction substantially across the feed advance direction. For the purpose a vibrator with vibrating elements extending in the feed advance direction vibrates in the cross-direction. These vibrating elements are so located that they can make the material flow through the chute more uniform.

Abstract: In a method for constructing a weighbridge, the weighing platform is made of reinforced concrete and is built in a previously prepared foundation ditch which is used as a mold for the weighing platform. After the hardening of the foundation ditch (1) separating means (10, 11) are placed in the foundation ditch (1) for separating the weighing platform from the ditch (1). Subsequently, the weighing platform is cast in the foundation ditch (1). A weighing cell assembly for a weighbridge, which is particularly suitable for use when performing this method, includes a weighing cell, a support element (6) for the weighing cell and a tubular structural member (8) which can be connected to the weighing platform and holds the support element (6). The weighing platform can be supported on the weighing cell through the tubular structural member.

Abstract: The operating or running characteristics of a vehicle tire or rim with a tire secured thereto are optimized on one and the same machine. For this purpose the tire or wheel is supported on a subcritically tuned support bridge structure and driven by a spindle with an adjustable r.p.m. The vibrations of the support bridge structure are measured and converted into respective electrical signals representing a wheel unbalance and/or tire non-uniformities while a drum is pressed with a predetermined force against the tire or vice versa. This force is also measured as an electrical signal. An angular position sensor is operatively connected to the tire or spindle and provides an electrical signal representing the instantaneous tire or wheel position relative to a polar coordinate system.

Abstract: The present mechanical chucking device especially for a testing apparatus, has a friction reducing layer interposed between the clamping members and a base plate and another friction reducing layer interposed between the base plate and securing elements for the clamping members, whereby said clamping members may slide within a given range along the base plate without having to release the securing elements holding said clamping members to the base plate. The clamping members are driven by a spindle movably held in a guide block on the base plate which allows an exact concentric clamping of the sample.

Abstract: The production of a mat of wood chips and/or fibers, hereafter called wood particles, by a spreading station and a weighing device, is controlled in a closed loop circuit for uniformity, directly during the spreading of the wood particles. Several spreading devices form a spreading station. Electrical signals emanating from a tared weighing device which is arranged downstream of a first spreading device as viewed in the direction of travel of a conveyor belt, are used to control the output of the first spreading device. If desired, the output of one or more spreading devices located downstream of a weighing device may also be controlled in a closed loop circuit, whereby the weight of the partially formed mat moving over the weighing device produces the electrical control signal which is compared to a predetermined reference signal for controlling the production of the finished mat having one or several layers.

Abstract: The leakage flow of a pressurized medium in gap type seals is controlled by a suction device at the sealing location of the gap seal. The suction device comprises a jet pump. The jet pump is driven by the pressurized medium in the gap seal or by an externally supplied fluid medium.

Abstract: A hydraulic eddy brake has a rotor and a stator both forming an eddy chamber. Liquid supply conduits lead to the center of the eddy chamber. The rotor shaft is sealed relative to the housing formed by the stator. The sealing is accomplished by noncontacting sealings. Leakage liquid is discharged to respective chambers located between the bearings and the eddy chamber proper. A gap is provided between the shaft and the housing. This gap is connected with the center of the eddy chamber through a liquid feedback which may include an intermediate chamber and respective liquid feedback conduits whereby the pressure at the point of leakage is minimized. Such brakes are used as absorption dynamometers to measure torque.

Abstract: The present testing apparatus for vehicle axles, wheel suspensions, and similar structural components permits the applying of several forces to the test sample. The testing forces or force components are effective in different directions and may involve vertical forces, longitudinal forces, and lateral forces. The force applying elements are connectable to the test sample either in a rotatable manner or in a manner rigid against rotation. Actuating and force transmitting elements are effective at least at one force introducing point forming part of said force applying element or elements. At least one force transmitting element is not directly connected to a force introducing point, but rather, it is connected to an intermediate lever. The intermediate lever in turn may be constructed for transmitting a further force component to said force introducing point.

Abstract: A clamping arrangement for clamping vehicle wheels against a rotatable counter plate of a test apparatus. A clamping plate is adjustably movable toward the counter plate. Clamping pins are mounted on a pressure plate and adapted to extend into and engage a mounting hole in a vehicle wheel. In order to enable the rapid alignment of a vehicle wheel in the apparatus, while assuring positive clamping, guide pins to the pressure plate. The ends of the clamping pins are contoured to enable them to fit the mounting holes of different diameters.

Abstract: A method for determining a vector component of an oscillation such as an oscillatory signal comprises applying the measured analog oscillatory signal to the calibration voltage input of a multiplying digital-to-analog (D/A) converter, and simultaneously applying a digital reference signal to the digital input of the digital-to-analog converter. The reference signal includes sine or cosine values of an oscillation suitable for the vector component determination and having a frequency corresponding to the frequency of the oscillatory signal to be determined. The analog output of the D/A converter is then further processed to ascertain the desired vector component. The circuit arrangement for practicing this method comprises a multiplying digital-to-analog converter and a binary counter which sequentially addresses a digital memory used to provide the digital reference signals. The binary counter is controlled by a reference signal generator.

Abstract: The unbalance angle is transformed into units of length or into non-dimensional units which are correlated to the body to be balanced, either to a circumference thereof, or to a characteristic scale of the body to be balanced. The unbalance position may then be displayed in such units. The apparatus for performing the method includes a transformation computer which transforms the measured angular value through at least one operant. Preferably, the apparatus also includes an indicator device for units of length or for non-dimensional units or angle representing units.

Abstract: The present feed regulating conveyor bin has a lower conveyor for conveying fibrous materials toward a discharge device including a pair of inclined rows of spiked rollers. A stud link chain conveyor is provided above the lower conveyor in the upper portion of the bin housing. Flexible, smooth surfaced pieces are hinged to each of the stud links. The surface pieces have a width substantially equal to the width of the housing and a length greater than the distances between adjacent stud links of the chain. A platform is provided beneath the upper course of the stud link chain conveyor in the region of an inlet opening on the upper surface of the housing, to support the surface pieces in a horizontal position for receiving and transporting fibrous material.

Abstract: In the weight correction of workpieces prior to finish-machining, such as connecting rods, the dimensions of the pre-machined surfaces are measured and employed as a factor in the adjustment of the machine tool for weight correction of the workpieces, for example, by machining material off or adding material onto the workpiece, so that the workpiece will have the desired weight characteristics after final machining.

Abstract: In a method and apparatus for processing a pair of d.c. signals representing information having angular and amplitude components, in particular, information relating to the unbalance of a body to be balanced, coordinate transformation means are provided in order to transform the coordinates of the two d.c. signals in response to a control signal, the control signal being continually adjusted in a direction dependent upon the polarity of the outputs of the coordinate transformation means, until one of the outputs of the coordinate transformation means becomes 0. In this case, the control signal corresponds to the angular information of the two d.c. voltages, and the output on the other output terminal of the coordinate transformation means corresponds to the amplitude information. Means are also provided for stopping the adjustment of the control signal, whereby a source of d.c.