HOT WATER APPARATUS. 
181 
ARTICLE XVI. 
DESCRIPTION OF A PORTABLE HOT-WATER APPARATUS FOR 
HEATING ROOMS OR CONSERVATORIES. 
BY MR. JOSHUA MAJOR. 
\ 
The apparatus may be made ol tin or copper; the latter, though of 
course it would cost more at first, would, owing to its durability no 
doubt, be the cheapest. Charcoal is employed for heating the appar¬ 
atus : oil lamps have been tried instead of it, but with not near so 
good an effect. As it is necessary to employ pipes to conduct the 
effluvium, arising from the charcoal, out of the place required to be 
warmed, it will, in order, to secure all the heat possible, be of impor¬ 
tance to introduce a sufficient length to allow the whole heat to pass 
ofi; before the ends of the pipes are turned to the outside. In order 
to make the smoke conductors suitable for any situation, it is only 
necessary, in addition to the elbow-pipes, to be provided with several 
lengths of straight pipes, placing one elbow upon the permanent 
smoke conductor connected with the fire, and the other at the ex¬ 
tremity, or midway of the piping, as it may be required. The larger 
17 
sized apparatus could not well be more than eighfffeet long; for, 
if larger, it would be inconvenient to move about. The size of the 
one which appears the most useful is as follows: The whole height 
of the centre portion of the apparatus, comprising the boiler, &c. is 
