Unit to be used for shortening piece of chain, comprising securing bolt prevented from sliding

摘要

A bow (2) located at the upper end of the unit (1) is guided through a ring-shaped connecting element. The slot (4) for joining the element is bridged by a bolt (3) inserted with one end into a dead end bore (8) and with the opposite end into a bore axial positioned to the first. The bolt (3) is secured by a roll pin (10). The last link (11) of a round steel chain (12) is connected to the bolt (3). The lower end of the unit is designed as a hook (7) in order to be inserted into the appropriate link for shortening the chain (12).