Standing Bolt to Steam Lead

A small bolt with thread cut at both ends. One end is screwed permanently into place, and the other is fitted with a nut.

A bar used when starting an engine, to work the valves by hand while the mechanical gear is disconnected.

A small valve by which steam may be admitted into a cylinder when the engine stands in such a position that the main steam valve covers both steam ports.

A boiler tube that is secured in the tube sheet more firmly than by merely expanding and beading over the ends, in order that the tube may act as a brace to hold the flat tube sheet against internal pressure.

An elastic vapor generated from boiling water.

Dry Steam is that which has no particles of water held in suspension.

Saturated Steam is that which has a temperature due only to its pressure.

Superheated Steam has received an additional amount of heat and its temperature is in excess of that due to its pressure.

The chamber attached to an engine cylinder into which the main steam pipe discharges and in which the main steam valve operates.

A large steam dome built about the base of the chimney, and the annular space thus formed connects directly with the interior of the boiler. The inner cylinder through which the gases pass is called the "lining."

A cylindrical reservoir built on the top of a boiler-shell. One end has a head riveted in, the other end is riveted to the shell.

A cylindrical reservoir having two heads. It is attached to the boiler by one or more short nozzles, through which steam reaches its interior.

The outer casing about an engine cylinder. Into the space enclosed is admitted live steam to heat the walls of the interior cylinder or lining.

A table in which the temperatures are given for the different pressures of steam.

(See Lead.)