392 
EXPLANATION OF THE PLATES. 
PLATE LVI. b. 
This plate shews a plan of the engines of the Dartford. 
E E, The cylinder lids or covers. 
C C, The cranks. 
D D, The steam-tight casings or trunks. 
G G, The stuffing boxes. 
H H, The connecting rods. 
a a, Slide valve boxes. 
c c, Starting handles. 
e, Hot well. 
ff Discharge pipes. 
hh, Eccentric rods. 
s, Air pump. 
k, Hand pump. 
u u, Bilge pumps. 
v v, Feed pumps worked by levers connected with the cross head of the air-pump rod. 
w, Platform on which the engineer stands to start the engines. 
x x x x, Foundation plate, cast in one piece and firmly secured to the four sleepers. 
y y y y, This plate measures 13 feet 8 inches athwartships, and 8 feet 6 inches fore 
and aft, which is the space occupied by the two engines. The cylinders are 
each 42 inches diameter, and the pistons have a stroke of 3 feet 8 inches; the 
paddle wheels are 18 feet diameter, and 7 feet wide ; the load water draught 
of the vessel is 8 feet 9 inches; the mean revolutions of the engines 26. 
PLATES LVIL, LVIIL, and LIX. 
FORTY-FIVE HORSE POWER ENGINE CONSTRUCTED BY W. FAIRBAIRN AND CO. 
™ , TTiTT »Fig. 1. Elevation of engine. 
Plate LVII. \ „ .. 6 
2. Plan of ditto. 
{ 
LVIII.I 
LIX. 
3. Front elevation. 
4. Back dittò. 
5. Cross section. 
V 
The letters refer to the same parts in all 
the views.