July 9, 1915.

THE COLLIERY GUARDIAN.

97

(Coppers’ Coke Oven

Is undoubtedly the most successful Bye-Product Oven on the market.
Since its introduction a little over 10 years ago there have been built

12,500 KOPPERS’ OYENS.

KOPPERS’ OVENS ARE AT WORK HEATED BY

PRODUCER GAS AND BLAST FURNACE GAS.

KOPPERS’ DIRECT RECOVERY PROCESS

IS THE SIMPLEST AND MOST EFFICIENT
SYSTEM OF AMMONIA RECOVERY.

PLANTS ERECTED FOR THE RECOVERY OF
BENZOL & TOLUOL, FOR TAR DISTILLATION &
THE MANUFACTURE OF SULPHURIC ACID.

------------ Full particulars on application to ————

The Hoppers’ Coke Oven and Bye-Product Co.

Telephone Nos-	Qftl fl I HCCAD DAAH QUECCIETI	Telegraphic Address-

1935 & 1331 (two lines).	OUIj UUUOOUr nUMUj OHCmCklSa	“kochs, Sheffield.”

BOILER HOUSE ECONOMY.

The Heywood Patent Furnace Bars
and Smoke Burner Combined. . ,

The illustration shows the Bars made in 5 ft. or 6 ft. lengths, with ribs cast on.
This Bar has been designed to meet the requirements of Collieries, Steel Works,
Forges, Locomotives, Steamers, and all other types of Furnaces that are very hard fired.

Write for Catalogue and price to—

THE “ HEYWOOD ” AIRTIGHT DAMPER CO. LTD.,

Grove Foundry, Gomersal, LEEDS.

Founded 189 9.

WATER

AND

WATER ENGINEERING.

Price 6d. monthly.
Annual Subscription,
7/6 post free
(payable in advance).

Offices—
30 & 31, Furnival Street,
Holborn, London, E.C.

"T:	.ijij ■/■i.i

CORRUGATED and FLAT SHEETS and
GALVANISED GOODS; TUB & CORNER PLATES;
AIR PIPES and all Colliery Requirements.

J. SUMMERHILL & CO.,

Beaver Works, WOLVERHAMPTON.

WE ARE MANUFACTURERS.

TURBON.

The LATEST THING in FANS.

Equally suitable for Mine Ventilation, forced and Induced
draught, or any other purpose.

Great strength, simplicity and silence.

Highest efficiency. Perfect balance at all speeds.

Suitable for all pressures.

Resists high temperatures without distortion.

No rivets in blades.

Manufactured by THE WADDLE PATENT FAN CO. LTD.,
---------------- FOR THE --

TURBON PATENT FAN CO. LTD.,

LONDON Address-	IT Y

34, Victoria Street, S.'IW.	Yd l.d Id X •

BRITISH.

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EDWIN LEWIS & SONS,

WOLVERHAMPTON.

Original Inventors & Makers
of Loose Flanged Tubes for
Mining Work.

Are now actually making largely of

Tubular Pit Props

as illustrated here.

OTHER TYPES ALSO MADE AMD TO ORDER.

Over timber these props have a much
longer life, give a much greater degree of
safety under actual working conditions,
and are practical and handy for fixing.
Prices and drawings on application.

References on hand.

WORKS—

Patent Iron Tube Works, Monmore Green.
Britannia Tube Works, Ettingshall.

9

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BRITISH.

Telegrams—“Lewis, Wolverhampton.'*	London Address—143, Cannon Street, E.C.

Telephone—Nos. 15 & 180 Wolverhampton. Liverpool Warehouse—58, South John St.