V 
HOT-WATER APPARATUS. 
681 
ARTICLE III. 
PLAN AND EXPENSE OF ERECTING A HOT-WATER APPARATUS 
FOR HEATING A VINERY.—Bv J. Waldron. 
The apparatus I am about to lay before your readers is so simple 
that when the pipes are obtained, any person may without difficulty 
fix them. The boiler (a) is three feet long, two feet six inches wide, 
and two feet six inches deep 112 
down the sides. The fire is 
made in the middle (b) and 
leaves but six inches depth ol 
water over it; the water coming 
down each side of the body of 
fire, and the flames also spread¬ 
ing around the outside (c c) 
soon causes the water to boil; 
the fire-place one foot six in¬ 
ches wide, and three feet long ; 
and from the great body of fire 
it will contain, the boiler is ca¬ 
pable of answering the purposes 
of several houses; and the fire when once got into full action consumes 
comparatively little fuel. On the top of the boiler is fixed a box 
(d) from which issues as many pipes as there are houses to be heated, 
allowing one pipe to each house. Each of these pipes has a stop¬ 
cock at its base (e) to turn the water, and heat on or take it off any 
house required. A similar box is fixed at (f) for the return pipes, 
and on the top of it is fixed a feeding pipe (g) to allow the air to 
escape from the circulating pipes, and also to supply the boiler with 
water; the size of the feeding pipe must be regulated by the quantity 
of water the boiler and pipes hold; every twenty gallons, when hot, 
becomes twenty-one by expansion, for every twenty gallons therefore, 
the boiler and pipes hold, one gallon must be allowed for the feeder : 
for instance if the boiler and pipes hold 160 gallons, the feeding pipe 
must hold eight to allow for expansion. There are two small pipes 
(fig. 113, h h) of half an inch bore placed upon tbe top pipes at the 
turning, to carry off' the air, that the water may circulate freely. 
These are carried up from four to six feet high, and if placed against 
the wall, will not be much seen ; if the pipes have to pass a door-way, 
they may be sunk under the walk and raised again after the manner 
