Sea Valve to Spread Fires

A valve in the bottom of the vessel with which pipes are connected leading to the pumps.

That surface upon which a valve makes its contact.

A vessel forming part of a steam pipe, in which the water entrained and carried through the pipe with the steam is separated from it.

A small finished bolt with a square head and the thread cut up to the head.

A piece usually circular in cross-section which is used to transmit rotary motion.

The passage-way from the engine aft to the stern bearing through which the shaft passes.

The jog formed by the change from one diameter to another in a shaft.

The pipes connecting the upper and lower chests of a poppet valve engine. There is one on the steam side and one on the exhaust side.

An iron bar with one flattened end used to clear the grates of ashes and clinkers.

(See Guide.)

A valve having a flat face reciprocating over ports in a flat seat.

The difference between the pitch of the screw and the distance that the vessel moves during one revolution of that screw. (See Pitch.)

An expansion joint in a line of pipe which is made by inserting an end of one of the lengths into the enlarged end of another length, as a stuffing box, and packing with soft material to make it tight.

(See Front Connection.)

The pipe erected above a boiler which carries away the products of combustion from the furnace. It also confines the heated gases in a column of sufficient height to produce draft. (See Draft, Natural.)

A valve fitted to the condenser opening upwards to permit the discharge of the air and vapor that collects before the engine is started.

A stay-bolt through two parallel flat surfaces of a boiler, holding them together against internal pressure. There is a head on one end, the other being rivetd over. Between the two sheets and about the bolt is a sleeve called a socket. A screw stay-bolt screwed through both plates has no socket about it.

(See Fires.)