| 摘要 |
Magnetic Sweeper Abstract Magnetic sweepers for collecting swarf, nails, screws and other steel items from the floors of factories, workshops or other areas are a known art. Most comprise a relatively heavy magnetic plate having one or more a North and South poles hinged over a non-magnetic (typically stainless steel) release plate. This assembly is mounted on wheels so that the assembly may be wheeled across the floor to pick up scrap steel or iron items. A handle is attached to the assembly for propelling the device around the floor. Discharge of collected steel scrap is effected by pulling the magnet upwards and away from the stainless steel plate so that distance is created between the magnet and the collected material which falls away. The present innovation provides a much lighter device taking advantage of modern rare earth magnet materials, multiples of north and south poles and a cylindrical casing with an offset axle on which the magnet element rotates. Rotation of the offset axle and the magnet element by means of a cable or wire or strong cord running through a hollow handle causes the distance between the magnet element and the circumference of the tubular casing to increase. As the gap between the magnet element and the collected scrap increases and reaches a point of ineffectiveness, the scrap is released. Item A Item E Item D Item B Item C |
