A METHOD OF FORMING MAGNETIC BLOCKS AND EQUIPMENT FOR CARRYING OUT THAT METHOD

摘要

In forming magnetic blocks, a first permanent magnet (13) is lowered to the bottom of an upwardly open vessel, the vessel is then filled with liquid and, while forcefully maintaining the first permanent magnet (13) in that position, further permanent magnets (14, 15) are gradually inserted into the vessel in a direction perpendicular to their resulting joint contact surfaces, where the adjacent surfaces of the superimposed permanent magnets (13, 14, 15) always have an opposite polarity, whilst during insertion of a further permanent magnet (14, 15), the liquid is drained from the space in the vessel under that inserted magnet, whereby the motion speed of the inserted magnet is controlled as it bears down on the permanent magnet lying beneath it. Alternatively, in forming magnetic blocks, an upwardly open vessel is filled with liquid and a first permanent magnet (13) is then lowered to the bottom whereupon, while forcefully maintaining the first permanent magnet (13) in that position, further permanent magnets (14, 15) are gradually inserted into the vessel in a direction perpendicular to their resulting joint contact surfaces, where the adjacent surfaces of the superimposed permanent magnets (13, 14, 15) always have an opposite polarity, whilst during insertion of a further permanent magnet (14, 15), the liquid is drained from the space in the vessel under that inserted magnet, whereby the motion speed of the inserted magnet is controlled as it bears down on the permanent magnet lying beneath it. The first permanent magnet (13) is forcefully maintained in its position by means of the attractive force exerted by an additional outer holding magnet (12). The equipment for carrying out said method comprises a vessel whose interior cross-section corresponds with clearance to the outline of the assembled permanent magnets (13, 14, 15), where sockets (7, 8, 9) with regulating valves are arranged along the height of the vessel, spaced so that their lower edges always lie above the upper surfaces of the assembled permanent magnets (13, 14, 15), and where all the parts are of non-magnetic material, whilst the bottom of the vessel is furnished with a means for exerting an attractive force on the lowered permanent magnets.