Mauch 20, 1913.

THE COLLIERY GUARDIAN.

617

WALKER BROS. (WIGAN)L"'

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



Pair Compound Corliss Steam Two Stage Air	Pair Two Stage Air Compressing Engines

Compressing Engines.	for Belt Drive.

NEW PATENT DISC VALVES FOR

AIR COMPRESSING & BLOWING ENGINES.

HIGH EFFICIENCY AND LARGE OUTPUT.

Applicable to existing Installations.

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 <& Petries’ Patent Overwind and Overspeed Device.