June 7, 1918.

THE COLLIERY GUARDIAN.

[supplement PAGE XV.]

1175

Coal Saving

For Collieries.

The Amount to be Saved.

The average efficiency of Colliery
boiler-plants to-day is only about 50 X,
whereas for all the industries of the
country the figure is about 60 J.

If, therefore, the ordinary Colliery
boiler-plant was reorganised so as to
be only as efficient as the average for
the whole country, the saving would
be about 16 X-

We can, however, reorganise your
boiler-plant to run on at least 70 X
efficiency, representing a saving of
nearly 30 X in average cases.

Further, we will undertake the reorga-
nisation of your boiler-plant on the
principle of payment by results.

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.

grownlie & JM,

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.

HALLITE

HIGH PRESSURE STEAM

MOTOR JOINTINGS

STOCKED BY
Millfurnishers, Ironmongers & Shipchandlers, &c.

HALL & HALL, 47, Leadenhall Street, London, E.C.3

Telegrams—** Turps, London.” Telephone—Avenue 6366 (3 lines).



Twenty-five Years’ Experience gives us
Efficient Grasp of Haulage Problems.

During this period we have proved in every instance
that the simplicity of design and reliable construction of

Heywood & Bridge’s Improved Patent

Friction Clutches

have no equals for COLLIERY
Haulage. They may be applied
to existing drives. Stops and
starts the heaviest loads without
shock or jar.

Pavid Bridge & C? Ln

~	■ Ironworks,

Manchester.

35 Queen Victoria St: E.C,

Write for 200 page Illustrated
Catalogue C 33, showing suita-
bility to every conceivable drive.

HEYWOOD ABRIDGES
patent FRICTION CLUTCHES
AND

COMPLETE HAULING GEARS

J.Stead 8 Cb.LtdyV.n r c
-------------^ Fll rS
‘MANOR WORKS > lljLjkJ

||" STEAD*

MANOR "WORKS

S HETFIELD

NEWTON, CHAMBERS

* & Co. Ltd.,
THORNCLIFFE IRONWORKS, near SHEFFIELD.
ESTABLISHED 1793.

TANKS in Cast Iron or Steel. GENERAL CASTINGS, CONSTRUCTIONAL STEELWORK.
CONTRACTORS to the ADMIRALTY, WAR OFFICE, and CROWN AGENTS for the COLONIES.
Telegrams—“ NEWTON, SHEFFIELD.”	Telephone No. 2200 Two Lines.

Tel. No. 4033 Central.

Manufacturers of—

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

»> WK W.J
Mowbray St., SHEFFIELD.

GEORGE ANGUS & CO. LTD.

NEWCASTLE-ON-TYNE.

CONVEYOR BELTS
__________________________________, or ALL DESCRIPTIONS.
I SEND FOR PRICES. H And at London, Liverpool, Birmingham, Manchester, Leeds, Glasgow, Cardiff,
^ililllillillllllllllllllllllllllllllllllllllllllllllllllllUIIIII^And JOHANNESBURG.