to the Boilers of ordinary Slea m-Eng mes. 331 
from die reservoir to the generator ; i, represents die flue or 
chimney, from the furnaces below. 
“ The continued passage of high pressure steam (genera- 
ted as above) through the tube z, heats the water, which oc- 
cupies about half the interior of the boiler, and by that means 
a sufficient quantity of steam may be produced in the boiler for 
working an engine of the ordinary construction, and with a very 
important saving in the quantity of fuel, compared to what 
would be consumed, to effect the same purpose, by any other 
plans heretofore adopted.” 
“ Now, whereas the materials of which my said improvements 
are constructed, and the exact proportions of the relative parts, are 
not subjects for which I hereby claim exclusive privilege, though 
I have described those materials and proportions which I have 
found most useful ; neither do I hereby claim exclusive privilege 
for the peculiar forms of the various mechanical agents which I 
employ, but only for a combination of such and the like agents 
as will produce the said improvements, the nature of which is 
herein before declared, and for which a claim to exclusive pri- 
vilege is hereinafter made. And whereas , I have only repre- 
sented in my said drawings annexed, such parts cf a steam- 
engine as comprise my said improvements, the various modes 
of applying such said improvements, by means of the steam- 
pipe being too well known to require particular description 
here. And whereas , my said generator may be heated by a 
variety of known furnaces, I have not described any one in 
particular, but the one I have used and found to be the best is 
one of the cupola kind, fed by a blast. And whereas , I have 
described in my said drawing, Fig. 1, a safety-pipe and indi- 
cator, and a forcing-pump, neither of which, are in themselves 
new, but which apparatuses, or similar ones, constitute a com- 
bination necessary to my said improvements, and are inserted as 
such ; I therefore hereby claim exclusive privilege for the fol- 
lowing improvements only : that is to say, first — for heating 
water or other fluid or fluids, for the purpose of generating 
steam for steam-engines, in a vessel or vessels, kept (during such 
process of heating) full of such water or other fluid or fluids, 
and under a pressure greater than the expansive force of the 
