| 摘要 |
<p>The variable number combination lock has an arbitrary number of setting discs. The code is pressed on the inner side and the number code is visible and set from outside. The discs are held on inner slider which has projections in front of each disc for locking if the whole number combination is not correctly set. The lock which cannot be listened to for clicks for finding a correct position, of a single disc, has also a special key for opening should the combination be forgotten. The number is set from inside by a steel slider in a sliding profile. The number of these sliders run from one to zero. The lock is opened readily when this figure appears also on the door by rotating the discs. The inner part with lugs can be pulled out only if all figures are correct on settings. No step by step opening is possible and the whole combination must be set at once.</p> |
