| 摘要 |
Locking means for racking of the type comprising metal uprights having sockets, e.g. pressed out of a web portion, and beams the ends of which are provided with hooks to engage in the sockets of the upright. The locking means comprises a magnet which is attached to the metal upright and positioned between a stop on the metal upright and an abutment surface on a beam to prevent upward movement of the beam and disengagement of the hooks.
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