August 16, 1918.

Coal Saving

For Collieries.

Experience.

We have had many years experience
in investigating the working of steam
boiler-plants and in designing schemes
of reorganisation to obtain maximum
efficiency.

We have just published in ‘ Engi-
neering the results of the working of
250 typical steam boiler - plants in
Great Britain, representing 8 years
continuous working, and we shall be
very pleased to send you a copy free
of charge.

These results shew an average nett
working efficiency of 60 J for all indus-
tries, and in the case of collieries 50 X-
We are able to reorganise a boiler-
plant to run on 70—75 X- efficiency
under average conditions, representing
a saving on colliery boiler-plants of—
say 30 Z.

We shall be glad to explain our
proposition personally or by letter,
and are prepared to visit your
Colliery free of charge and give
you our opinion of the working
of your boiler-plant.

$rounlic & (Green Xttl..

TECHNICAL CHEMISTS & ENGINEERS,
SPECIALISTS IN FUEL ECONOMY.

2, AUSTIN FRIARS, LONDON, E.C. 2.

Telephone	-	-	6292 London Wall.

Manchester -	-	30, Cross Street.

Glasgow ...	94, Hope Street.

Laboratories and Testing Station,
Church Street, Cheetham, Manchester.

__________________________________________________________

]\/rAPS oF the British Coalfields.

ATA. J Scotland. 2. North of England. 3. South Wales. 4. North
Midlands. 5. South Midlands. Sheet, 4s. each: Mounted on Cloth on
Rollers, or in Case, 6s. each.-THE COLLIERY GUARDIAN CO. LTD.

30 & 31, Furnival-street, Holbom, London, E.C. 4.

___________________________________________________________

TYNOS.

“Bitromarc” Solution

A highly efficient Bituminous, Anti-
Corrosive Black Enamel Paint for Iron
and Steel Structures, Corrugated Iron,
Ships’ Holds, Bunkers, &c.

SOlC PROPRIETORS i

S. T. TAYLOR & SONS,
Tynoi Works, SC0TSW00D-0N-TYNE.

TeL N®.! 65 Central	T-l. Addr-u : “Comp®, Scotawood.”

367

THE COLLIERY GUARDIAN.

____________________________

[supplement PAGE XV.]

= _______»_

& BRIDGES

HEYWOOD

Are giving solid satisfaction in COLLIERIES,
MINES, QUARRIES, &c., all over the World.

Safe, Efficient, Durable, and Absolutely Reliable-

200-pp. Catalogue ' C33) of Clutches, Gearing and Haulages, post free.

| DAVID BRIDGE <& CO. LTD., |

Cas Inion Iron Works, CASTLETON, MANCHESTER.

— 3	London Address-35, Queen Victoria Street, E.C.

_____	___________________

T. E. COPLEY & CO

Mowbray St., SHEFFIELD

________________

Manufacturers of—

COAL CUTTER PICKS
MINING DRILLS,
SPECIAL TOOLS AND STEEL
OF ALL DESCRIPTIONS.

Tel. No. 4033 Central.

_________

____________

THOMAS SUMMERSON & SONS LTD

ALBERT WORKS, DARLINGTON.



_____

Sidings

Contracted for

Complete.

_________

MANUFACTURERS of SWITCHES and CROSSINGS,
Chairs, Spikes, Fish Plates, Iron and Steel Castings.

FISH PLATES and BOLTS for various sections of Rail kept in Stock.

To COLLIERY PROPRIETORS, ENGINEERS, So

terms, to the Sole Manufacturers

Have 30 years’ manufacturing experience behind them.

Woven in one solid piece, whatever thickness.

Produced exclusively from warranted pure Asbestos.

Contain no cotton or other perishable fibre.

Are the most resilient and strongest.

Outlast many times any other existent brake-lining.

An essential equipment, guaranteeing absolute safety and
trustworthiness in all emergencies.

Send postcard for sample, prices and

CRESSWELLS’ LTD

Wellington Mills, BRADFORD, YORKS.

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