Lock for roller-mounted ship's hatch covers - is formed by bracket secured to roller track, and has bolt hooking onto cover

摘要

The locking device is for ship's roller-mounted hatch covers, partic. if they require opening at sea, replacing the hooked-stop-and-pin type usually fitted. It comprises inverted U-shaped brackets (A) fixed to and projecting beyond the roller track beam (E), with a hole in the top for a bolt (B). The bolt has a T-head, for fitting into grooves in the topof double brackets (C), normally found on hatch covers (D) of this type, and a nut which is tightened to secure the cover rigidly to the beam.