Fessenden's Stove. 



349 



four legs. Within this cyhnder are 

 a grate, an ash pit, and a fire-place, 

 with proper doors to admit fuel, take 

 away ashes, and the like. Directly 

 over the fire-place, and also within the 

 cylinder, is a boiler; and over the" 

 boiler two or more flat cylindrical ves- 

 sels, as represented in the figure, fitted 

 with tubes to receive steam from the 

 boiler, and yield heat to the air of the 

 room. The tubes forming the chan- 

 nels of communication between the 

 boiler and the receivers terminate with- 

 in the latter, two or three inches above 

 their bottoms; by which means water 

 is retained in the lower parts of the re- 

 ceivers, while their upper parts are 

 heated by steam. The extra steam not condensed in the receiv- 

 ers, is carried off by a small tube leading into the smoke pipe. 



Although I have adopted, for the most part, in my Patent Stove, 

 apparatus, similar in shape and component parts to that figured and 

 described above, yet, its form and proportions may be varied in- 

 definitely. And as the Patent Act declares that ' changing the 

 form and proportions of any machine in any degree shall not be 

 deemed a discoyery,' I shall hold the unlicensed adoption of the 

 principles of my stove, under any possible form or modification, 

 to be a violation of my patent right. 



T. G. Fessenden. 



[Three desirable objects seem to be attained by the introduction of 

 this stove, which are not realized by those in general use, namely, econ- 

 omy, health, and convenience. The expense of fuel is but about half as 

 inuch as that of common stoves. The rpom in which it is used is 

 entirely free from the dull, dry, and unhealthy atmosphere, which al- 

 ways accompanies the use of cast iron stoves. The room may be left 

 at any time, after sitting for hours, without the least apprehension of 

 taking cold; and on i-eturning none of that pressure of the head is felt, 

 as is often the case on entering a room heated by other stoves; but on 

 the contrary there is a softness of atmosphere, calculated rather to pro- 

 mote cheerfulness, and inspire liveliness of spirits. Ed.] 



