ENGINES OF STEAM-SHIP “ SERYIA.”

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EXPLANATION OF LITERAL REFERENCES

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High-pressure Cylinder with SteamJacket.

Steam Ports.

Exhaust Passage to the Low-pressureCylinders.

Low-pressure Cylinders with SteamJackets.

Steam Ports.

Exhaust Port into the Surface Con-denser.

Cylinder Covers.

Stuffing Boxes and Glands for PistonRods.

Stuffing Boxes and Glands for Pro-longation of Piston Rod.

Escape Valves.

Piston Valves for the High-pressureCylinder.

Piston for carrying up the weight ofthe Valves.

Slide Valve for the Low-pressureCylinders.

Piston for carrying up the weight ofthe Valve .

Spring on the back of the Valve .

High-pressure Valve Spindles. Linkand Lever in connection with theDouble Eccentrics and Link Motionfor the High-pressure Cylinder.

High-pressure Piston Valve RockingShaft.

Double Eccentrics and Link Motionfor the High-pressure Valves.

Valve Spindles for the Low-pressureCylinders.

Double Eccentrics and Link Motionfor the Low-pressure CylinderValves.

Steam and Hydraulic Starting Gear,with Shaft, Lever, and Rods , inconnection with the Link Motion.

Auxiliary Starting Valve.

Steam Pipe.

Main Framing for supporting theCylinders.

Pillow Blocks for the Crank Shaft .

Piston for the High-pressure Cylinder:

Piston Rod.

Prolongation of the Piston Rod.

Nut for securing the Piston.

Crosshead and Gudgeon.

Piston for the Low-pressure Cylinder.

Piston Rod.

Prolongation of the Piston Rod.

Nut for securing the Piston.

Crosshead and Gudgeon.

Connecting Rods .

Crank Pin and Shaft.

Surface Condenser.

Air Pump .

Cover.

Bucket.

Head Valves.

Hot Well.

Air Pump Discharge Pipe.

Z Air Pump Rod.

Z 1 Prolongation of the Air Pump Rod.z 2 Guide for the top of the Air PumpRod.

z 3 Links connecting the Air Pump Cross-head with the Rocking Levers.z 4 Rocking Levers.

z 5 Links connecting the Rocking Leverswith the Piston Rod Crosshead.z 6 Throttle Valve and Steam Pipes fromthe Boiler.

Hand Gear.

Starting Cylinder Valve.

Low-p. Auxiliary Starting Slide Valve.

High-p. „ „ „

, Low-p. ,, ,, „

. Conical Valve to admit Steam to Reser-voir.

Double-beat Valve to admit Steam toHigh-pressure Valve Casing.

Jacket Drain Plug Taps and Handles.

High-pressure Cylinder Drain PlugTaps and Handles.

Low-pressure Cylinders Drain PlugTaps and Handles.

Common Injection Valve.

One High-pressure Cylinder72" diam., and two Low-pressure Cylinders each100" diam. Stroke of Pis-ton 78". Two SurfaceCondensers, placed foreand aft. Seven Boilers ofoval form, 14' 10" wide,18' high, and 18' 3" long;having thirty-nine Fur-naces 4' 2" diam. and 6' 9"long. Effective Grate Sur-face 1050 sq. ft. ; totalHeating Surface 27,000 sq.ft. Diameter of Propeller24 ft. Indicated Horse-power 10,500.

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THREE-CYLINDER COMPOUND DIRECT-ACTING ENGINES OF STEAM-SHIP “SERVIA,” 7400 TONS gross.

CONSTRUCTED BY MESSRS. JAMES AND GE0RGE TH0MS0Nj GLASGOW, FOR THE CUNARD LINE OF ROYAL MAIL ATLANTIC STEAMERS.