| 摘要 |
<p>The apparatus is usable for example in a bank safety-deposit-box system and is carried by a carriage (13) movable along at least one rack. Each box (10) has a grip (12) adapted to be engaged by an entrainment roller (33). This is carried by a first arm (35) of a linkage (34,35) having another arm (34) adapted to be pivoted relative to the carriage (13) by a first geared motor (53). The two arms (34,35) are of the same length and are connected by a gear system (62,63,66) which is arranged to rotate the first arm (35) in the opposite sense from the other, so that the roller (33) is moved along a rectilinear path. One (62) of these gears (62,63,66) is fixed to a structure (49) carrying the geared motor (53) and which may be rotated through a predetermined angle by a second geared motor (73) to bring the roller (53) into a rest position. <IMAGE></p> |
