Reducing Coupling.
Right-hand Thread. A screw thread in which, with the threaded end of the bolt towards you, the top of the nut must revolve from left to right like the hands of a watch, in order to cause the nut to screw upon the bolt.
Rope-socket. A device fastened to the end of a rope by means of which the rope may be attached to its load. The socket may be open or closed.
Rust-joint. A joint which is made by being filled with sifted cast-iron borings, mixed with sal ammoniac, sulphur and water; this causes the cuttings to rust and form a solid cement.
Rope Sockets.
Sea Injection. The pipe and valve through which sea water is injected into the condenser of a marine engine.
