530

THE COLLIERY GUARDIAN.

March 15, 1918.

HIGH SPEED STEEL

FAMOUS

BRANDS

A.W.

PREMIER

TRADE

MARK.

UNIFORM QUALITY FOR CUTTING ALL CLASSES
OF METALS AT HIGHEST SPEEDS.

(High
Speed Steel

Twist Drills,
Milling Cutters,
, Broaches & Hobs,

Hand Screwing Apparatus
(Stock, Dies, Taps,

Chasers, etc.),

Gauges,

Measuring

Machines.

Sir W. G. ARMSTRONG, WHITWORTH & CO. LTD.,

Telephone No.:	F"	RM	**	Telegraphic Address :

6480 Central (6 lines).	< M-<W	w	BVB iBBB Ir	« “Whitworth, Openshaw.”

WALKER BROS. (Wigan)

Codes :—A B C, 4th and 5th, Liebers, Moreing and Neal Mining	Ltd.

Code, Al Universal Mining, Western Union.

ESTABLISHED 1866.

AIR COMPRESSORS

' .1
e--".

A pair of Corliss Compound Steam Two-Stage Air Com-
pressing Engines, with Valves to Walkers’ Latest Patents.



with Valves to recent
Patents now at work
(or on order) indicating
over

135,000-H.P.

Raising our total output
during 4 0 years to

500,000-1.H.P.

Patent Unloading
Device for Power-
driven Plants.

WINDING, HAULING & GENERAL
MINING MACHINERY.

VENTILATING FANS

of the Walker “ Inde-
structible ” type.

Capacity of Fans at
work or on order.

100,000,000

cubic feet per minute.

HIGH MECHANICAL
EFFICIENCY

whether driven by
steam or electricity.

.

■'■-W 'iLTiirttia

A pair of Four-cylinder Triple Expansion Driving Engines, with
Corliss Valve Gear.

DELIVERIES

FROM STOCK

Albert Frosts

- Howard St.

Sheffield.

fwPOTSffloas
Do® Spagsb®

UNION	BRAND

RED LABEL.

>>	O Q Q © Q O	(2)

PAGEFIELD IRONWORKS, WIGAN

Telegraphic Address: “ Pagefield, Wigan.”