February 21, 1913.

THE COLLIERY GUARDIAN.

409

WALKER BROS. MANI L”

Pagefield Ironworks, WIGAN. New Broad Street House, LONDON.



Pair Two Stage Air Compressing Engines
for Belt Drive.

Pair Compound Corliss Steam Two Stage Air
Compressing Engines



NEW PATENT DISC VALVES FOR

AIR COMPRESSING & BLOWING ENGINES.

HIGH EFFICIENCY AND LARGE OUTPUT.

Applicable to existing

Installations.

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Triple Expansion Driving Engine with Corliss Valve Gear.

“ INDESTRUCTIBLE ” TYPE VENTILATING FANS

FOR STEAM OR MOTOR DRIVING.

EASY MEANS FOR REVERSING AIR CURRENT.

Twin Tandem Compound Winding Engines.

Horizontal Winding Engines with Two Non-Compound Cylinders

WINDING, HAULING AND GENERAL MINING MACHINERY.

Wilde <& Petries9 Patent Overwind and Overspeed Device.