The Locksmith Journal Jan-Feb 2015 - Issue 36 | Page 39

historyoflocks • 39 PROUD SPONSORS OF THIS PAGE HoL Artefact No. 263 Kromer Automat Combination Lock Body Serial No. 1947. Body Size: 139 x 120 x 20mm, steel. Dial Serial No. 814. Size: 95mm diameter x 71mm, cast brass. Operating instructions for this example Firstly note the index mark is on the dial, between the words ‘DBEHGRIFF’ and ‘AUTOMAT’ also note the upper , segment of the dial ring namely the digits 9.8.7.6.5.4.3.2.1.0.a.b.c. The combination of this artifact is: 7.2.8.9. Above: The lock with the cap and dial removed Right: The individual components Note that the index mark is on the dial and the numerals are on the dial ring, which is the opposite to most combination locks. Also note the gap in the dial rim, between the digits 4 and 3, where a pin or stiletto is inserted to release the dial and handle 1. Turn the dial anticlockwise fully to the left, beyond the first digit clearing the combination pack. 2. Turn the dial clockwise to ‘0’ . 3. Turn the dial anticlockwise to ‘7’ . 4. Turn the dial clockwise to ‘a’ . 5. Turn the dial anticlockwise to ‘2’ . 6. Turn the dial clockwise to ‘b’ . 7. Turn the dial anticlockwise to ‘8’ . 8. Turn the dial clockwise to ‘c’ . 9. Turn the dial anticlockwise to ‘9’ . 10. Finally turn the dial clockwise past ‘c’ until it stops whereupon the keyway to the main lock will be revealed. If a mistake is made, as with most combination locks, the dialling sequence will have to be restarted from the beginning. Turn the dial fully clockwise and then anticlockwise, to reset the mechanism and start the sequence again. The underside of the dial showing the clip retaining groove An interesting anomaly with this lock is that should the combination slides/ leaves be rearranged and the lock reassembled, both the combination and its operation would remain the same. The lock mechanically detects which lever to lift, due to each levers’ unique form. The dial handle, or knob, is attached in a way which might not be obvious. Note the tiny gaps in the outer edge of the dial ring in the 6 and 12 o’clock positions, which gives access to a sliding, double sided horseshoe type clip. When an instrument such as a stiletto is pushed in from the top, it engages the spindle, or disengages from the bottom. Once disengaged, the ‘T’ handle, (with spindle attached) is simply pulled to remove. The underside of the dial ring showing the retaining clip and the entry points on the circumference, through which the clip is pushed to en