3^§ dtkTlNe iR,06MS BY SfElAH?. 



History arid arising from condensation. The whole apparatus^ as it 



roeSof ^ ^^^ ^*°°^ ^^*^^ *^'^ alteration, is represented by the drawing, 



heating rooms Fig. I. Plate I. 



by steam "^ -pjjjg drawing presents a riew of an inner gable, which 



is at one extremity of the preparations and spinning rooms 

 of the mill. On the other side of this gable there is a space 

 of 17 feet enclosed by an outer gable, and containing the 

 water wheel, the staircase and small rooms, for the accom* 

 modation of the work. In tliis space the furnace and 

 boiler are placed on the ground. The boiler cannot be 

 ^hown here, as it lies behind the gable exhibited; nor is it 

 of any consequence, as there is nothing peculiar in it. It 

 hiay be of any convenient form. The feeding apparatus, 

 &c. are in every respect the same as in the boiler of a com- 

 mon steam engine. A circular copper boiler, two feet 

 diameter, by two feet deep, containing 30 gallons of water, 

 with a large copper head, as a resei-voir for the steam, was 

 found to answer in the present instance. The steam is con, 

 veyed from the boiler through the gable, by the copper 

 pipe B, into the tin pipe C, C. From C it passes into the 

 centres of the perpendicular pipes E, E, E, by the small 

 bent copper tubes D, D, D. The pipes E, E, E, are con- 

 nected under the garret floor by the tubes F, F, for the 

 more easy circulation of the steam. The middle pipe E is 

 carried through the garret floor, and communicates with a 

 lying pipe 36 feet in length (the end of which is seen at G,) 

 for heating the garret. At the farther extremity of the 

 pipe G, thei'e is a vahe .falling inwards to prevent a vacuunt 

 being formed on the cooling of the apparatus ; the conse- 

 quence of which would be the crushing of the pipes by the 

 pressure of the atmosphere. Similar valves, K, K, are 

 placed near the top of the perpendicular pipes E, E ; and 

 from the middle one E, the small pipe passes through the 

 roof, and is furnished with a valve at I, opening outwards, 

 to suffer the air to escape while the pipes are filling with 

 Steam, or the steam itself to escape when the charge is too 

 high. 



The water condensed in the perpendicular pipes E, E, E, 

 trickles down their sides into the three funnels, L, L, L, the 

 weeks of which may either pass through, or rpund, the pipe 



