May 9, 1913.

THE COLLIERY GUARDIAN.

947

HEW PERMITTED LIST

MELLING POWDER.

For Ripping and Coal Getting.

UPLEES POWDER.

For Coal Getting and Light Ripping.

Two Safety Explosives for

all classes of work in the mine.

We also supply

FAVERSHAM POWDER, REXITE, NORMANITE & SWA LITE.

THE COTTON POWDER CO. LTD.,

24, Walbrook, LONDON, E.C.

USE STEAM WAGONS FOR ECONOMY.

T

I <

STEAM WAGONS, to carry 3 or 5 tons

MANN’S

PATENT STEAM CART
and WAGON CO. LTD.,
HUNSLET, LEEDS.

London Office—

9, Fenchurch Avenue, E.C.

STEAM CART, to carry 5 tons.



WELDED TUBES

up to 36 in. diameter, for

------ MINING, GAS AND WATER. ----------------------

EDWIN LEWIS & SONS, WOLVERHAMPTON.

WORKS :

Telegrams—“Lewis, Wolverhampton.”	Patent Iron Tube Works, Monmore Green.	London Address—143, Cannon Street, E.C.

Telephone—No. 15 Wolverhampton.	Britannia Tube Works, Ettingshall.	Liverpool Warehouse—58, South John St.



		-						—MIIIIIIW—


IMPORTANT NEW DEVELOPMENT IN

GAS

ENGINE DESIGN

THE “DUPLEX” VALVELESS GAS ENGINE.

The simplest and therefore the most reliable Engine on the market.

THE

Duplex

(Patent)

Valveless Gas Engine

NO

NO

NO

NO

NO

NO

ADMISSION VALVES.

EXHAUST VALVES.

CAMS.

SIDE SHAFTS.

VALVE POCKETS.

INTRICATE CASTINGS.

Easy to Lubricate. Easy to Overhaul. Steady Running.

The “ Duplex ” represents the highest standard of Gas Engine Construction.

In Single Units from 200 H.P. up to 4,000 H.P. or larger if required.

Write for Booklet.

daflicr xPMe

MANCHESTER and LONDON.



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