HOBES 02-03

The 02-03 is a single throw lever sashlock made by the Czech company HOBES. The lock provides only low level of security - although there are five levers, they have no anti-picking or anti-impressioning mechanisms.

The lock uses original key blank designated 02-03 (blade length 9.9mm), Silca 6HOB4.

Principles of operation
Unlike the traditional levers, which pivot around a point, the levers here move vertically; technically one might call them sliders, but since the rest of their function is the same as levers in the traditional lever lock, the classical nomenclature is followed here.

The lock contains five levers which need to be set to a correct height in order to allow the stump through the gate, extending or retracting the deadbolt.

The first lever is thicker than the rest and also its spring is stronger compared to the rest. Unlike the rest, first lever doesn't have the spring crimped to the lever. Also the pockets and gate looks different compared the other levers and it interacts with the shaped part of the stump. Since the key can be used from both sides, this lever is a max lift by design, as it interacts with the same part of the key, as the talon.

The other levers are interfacing with the rectangular portion of the stump. The pockets and gate shape and its position is the same on all levers and the only thing that differs is the belly.

The latch bolt can only be actuated by the hub via a door handle, so the door handle must be on both sides of the door. The latch bolt can be unscrewed and turned if needed.

Disassembly instructions
The lock is held together by three screws and also some of the protrusions through the cover are crimped, so some leverage is necessary to remove the cover for the first time. Just be careful as the hub spring tends to fly away along with the hub whenever it can.

Vulnerabilities
The Hobes 02-03 is vulnerable to one or more of the following:


 * Lockpicking
 * Decoding
 * Impressioning