| 摘要 |
<p>A door latch comprising a casing (10) having a fore end (11) and containing a latch bolt (12) mounted on a sliding plate (15) within the casing, the latch bolt (12) being retractable against a spring (18) by means of a handle follower (13) rotated by a spindle (14). An eccentric cam (32) which may be rotated on a slotted spindle (33) is adapted to move the latch bolt (12) on a spindle (27) outwardly beyond the fore end (11) and relative to the plate (15) so that it may be rotated about 180° to reverse the latching direction of the latch bolt. The cam (32) may then be rotated again to return the latch bolt to its position within the fore end (11). Thus, the direction of the latch may be reversed without opening the casing (10) by inserting a screwdriver in the slotted spindle (33) which is exposed at the surface of the casing (10) through an aperture in a side wall (11b).</p> |
