Power operated spanner with revolving ring - incorporates interchangeable lug inserts held in place by catch

摘要

The power driven spanner has a revolving ring (13) with profiled inner surface (14) between the two faces (4,4') of the head (3). An insert (6) which fits inside (14) the ring (15) has a projecting lug (7). A piston and cylinder ram turns the ring in one direction only. On the opposite end of the insert (6) from the lug end (7) there is a catch (5) to prevent it coming loose. USE/ADVANTAGE - The insets are easily interchangeable and are prevented from axial movement by a spring catch. (6pp DWg.No.2/3)