400 



EXPLANATION OF THE PLATES. 



PLATES LXX. A. AND LXX. B. 



SECTIONS OF THE ENGINES OF THE HON. EAST INDIA COMPANY'S ARMED 

 STEAM VESSEL BERENICE, MANUFACTURED BY ROBERT NAPIER, ESQ., OF 

 GLASGOW. 



A A, Boilers. 



B, Steam pipe connected to jacket of 

 cylinder. 



C, Cylinders. 



D, Bed plates of engines, with condenser, 

 hot well, &c., cast in one piece. 



F, Hot well. 



H, Framing. 



I, Steam chest for containing D, slide 

 valve. 



.1 J, Eccentric rod and gearing for con- 

 necting and disconnecting engines. 



K, Piston rod. 



L, Cross heads. 



M, Cylinder side-rods. 



N, Parallel motion. 



0, Side beams (or side levers). 



P, Air pump side rods. 



Q, Connecting rods. 



R, Main cranks. 



S, Intermediate shaft. 



T T, Paddle wheel shafts. 



U, Paddle wheel. 



V, Paddles (or floats). 



W, Plumbing blocks. 



X, Waste pipe from top of hot well. 



Y, Stays for binding engines together. 



Z, Eccentric pulley. 



Nos. 444, Engine bearers. 



5, Keelson. 



6, Keel. 



a a, Safety valves on top and 

 bottom of cylinder. 



b, Stuffing box on cylinder cover. 



c, Valve shaft. 



d, Parallel motion shaft. 



e, Starting shaft. 



f, Hand gear for starting engines. 



g, Expansion valve shaft. 



h h, Gear for working expansion 

 valve. 



i, Side rods for working parallel 

 motion. 



j, Waste water pipe. 



k, Injection pipe. 



I, Waste pipe from feed pump. 



m, Pump for filling boilers, washing 

 decks, or extinguishing fire ; the 

 pump may be worked by the 

 engine or crew. 



n, Steam pipe. 



o, Feed pipes for boilers. 



p, Feed pump. 



q, Cast iron crank hatches. 



r, Malleable iron stays for support- 

 ing ends of paddle beams. 



s, Malleable iron knee and stays for 

 supporting ends of beams. 



t, Handle for working pump on deck. 



u, Funnel. 



f, Steam chest. 



