Boiler

Boil·er

One who boils.
A vessel in which any thing is boiled.
A strong metallic vessel, usually of wrought iron plates riveted together, or a composite structure variously formed, in which steam is generated for driving engines, or for heating, cooking, or other purposes. (Mech.)

Barrel of a boiler: the cylindrical part containing the flues.
Boiler plate: plate or rolled iron of about a quarter to a half inch in thickness, used for making boilers and tanks, for covering ships, etc.
Cylinder boiler: one which consists of a single iron cylinder.
Flue boilers: are usually single shells containing a small number of large flues, through which the heat either passes from the fire or returns to the chimney, and sometimes containing a fire box inclosed by water.
Locomotive boiler: a boiler which contains an inclosed fire box and a large number of small flues leading to the chimney.
Multiflue boiler: Same as Tubular boiler, below.
Sectional boiler: a boiler composed of a number of sections, which are usually of small capacity and similar to, and connected with, each other. By multiplication of the sections a boiler of any desired capacity can be built up.
Tubular boiler: a boiler containing tubes which form flues, and are surrounded by the water contained in the boiler. See Illust. of Steam boiler, under Steam.
Tubulous boiler: See under Tubulous. See Tube, n., 6, and 1st Flue.