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[To face page 533.
Plate XXXI.
ur^iin \
Figs. 537 and 538.—Hydraulic Quay Crane.
VERTICAL SECTION
References.
A, Lifting Cylinder.
B, Slewing Cylinder.
C, Slewing Lever.
D, Lifting Lever.
E, Pivot.
F, Hydraulic Trunnion.
G, Slewing Drum.
H, Pipe Culvert.
I, Pressure Main.
K, Return Main.
L. Roller Track.
M, Slewing Gear.
N, Lifting Gear.
O, Operator’s Hut.
P, Jib.
Q, Screw Clips for fixing Craue.