Abstract: A system for washing a stream of eggs which are uniformly distributed on m feed rows of a transport device and assume well-defined positions thereon, comprising—a feeding section, having, at least at the location of the washing of the eggs, m feed rows with the eggs on diabolos which are attached to cross axes whose ends are connected to endless chains, a washing device through which the eggs on the feed rows are passed and washed,—a dirt detection device for testing the washed eggs for residues of dirt, whereby, according to a well-determined procedure carried out by, for instance, a computer, each egg is assigned a dirt grade, while the washed eggs are passed on the feed rows along the detection device, a discharge device to which are allocated, in accordance with and following said procedure, those eggs whose dirt grade has exceeded a predetermined limit, and which discharges them as dirty eggs from the feed rows, while the other eggs proceed as clean eggs on a follow-on conveyor virtually from the dischar

Abstract: In a sorting apparatus for, for instance, eggs, an apparatus for turning eggs is arranged. The eggs are located on rollers which are mounted on axes of a roller conveyor. Further provided is a detection device for scanning the direction of orientation of each egg during transport on the roller conveyor, while turning elements are mounted on an endless chain, which turning elements during transport on the roller conveyor pick up the eggs from the roller conveyor, if necessary turn the eggs with the point in a pre-set direction, and subsequently deposit the eggs on a next transporting apparatus. The detection device consists of a device for effecting images of the eggs passing and for electronically processing the images, whereby an orientation signal is formed and a turning signal is delivered to the turning apparatus for turning the eggs in the desired direction.

Abstract: A probe for an egg-testing device includes a probe tube with an annular magnet disposed at a bottom end thereof. In the probe tube, a spherical excitation member is magnetically retained by the annular magnet. The probe is axially movable in a metal tube around which a bobbin is wound. In a rest position, the probe is retained by the magnetic attractive force between the metal tube and the annular magnet. The probe is brought into an operating position by an excitation pulse supplied to the bobbin, which pulse is provided by a control unit, taking into account the diameter of an egg to be tested and the conveying speed of a conveyor.