February 18, 1916.

THE COLLIERY GUARDIAN.

305

LOCOMOTIVES.

COLLIERY
HAULAGE
ENGINES

FOR

AIR, STEAM & ELECTRICITY.

FORGINGS
& REPAIR WORK.

a



COAL
CUTTING
MACHINES

OF ALL TYPES.

MACHINE WORK OF
EVERY DESCRIPTION.

1slc°ZnohZ: YORKSHIRE ENGINE CO.

Westminster, S.W.	Telegrams “ Engine, Sheffield.”

LTD,

HEAD OFFICE & WORKS,
SHEFFIELD.

GEORGE BURNSIDE,

Burnside’s Barty
Boring Apparatus.

Used moat suooesafally
In tapping old Mine
Workings.

.Apply for Catalogue.

Boring tool Works, Shiney Row, Fencehouses,
Also Eyi Guards job Pit Bonus. CO. DURHAM.

COVENTRY

V/Z&//WCHAINS

Handbook C3on

Chain Gearing

FREE.

HO/SELESS

'fl

• CANNOT SLIP

CHAINS many reasons why
the}’ prove so economical
in Power Transmission

I “The Coventry’’ Chain Co, Ltd.
Coventry.

LITTLE GIANT POWER HAMMER.

With or without individual motor drive.

400 ft.P.IVI.

Machine gun rapidity and precision.

See large advert, first issue each month.

Write your dealer, or to

MAYER BROTHERS CO.,

122 Rock St, Mankato, Minn, U.S.A.

“Spade” Washers

For the Scottish Tube Company’s Tubes,
and others.

JOHN E. KEIRBY & SONS L™

SWINTON, near MANCHESTER.

Telegrams—“Keirby,” Swinton, Manchester. Established 1864.

(The word “SPADE” is a Registered Trade Mark.)

PERFORATED PLATES

FOR

COAL SEPARATING
PROCESS.

THOMAS HUDSON LTD.,

COATBRIDGE.

GOODALL, CLAYTON & Co. Lo.

PRINCEPS PATENT

“DEFLECTOR” OIL SEPARATOR.

Telegrams :—
“ Vertical, Leeds.”

Telephone:—1982, Leeds.

LEEDS.

* ■■

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MAKERS AND ERECTORS OF

SCREENING PLANTS, PICKING BELTS, SCREENS,
PITHEAD GEARS.

BUNKERS, ROOFS, STEEL STRUCTURAL WORK, &c.

GAS RETORT INSTALLATIONS, CONVEYING PLANTS.

Representatives:—H. L. CHESTON, Clarendon House, Boston Spa, Yorks.

W. OGDEN DAYSON, 1, Mount Street, Swansea, for South Wales.

■k

Capacity, 300,000 lbs. of
steam per hour,
60" diameter main.

ONE OF THE LARGEST
EXTRACTORS MADE IN THIS
COUNTRY.

PRINCEPS & CO,

Engineers,

SHEFFIELD.

GRIFFIN MILLS STONEDUST.

No. 6 REPORT OF THE EXPLOSIONS IN MINES COMMITTEE,
whilst recommending a minimum of 50 °/o passing a 200 x 200 sieve, says
emphatically“THE FINER THE DUST THE BETTER,” con-
sequently, STONEDUST PRODUCED BY THE GRIFFIN IY1IL.L.
SYSTEM IS THE MOST EFFICACIOUS PRODUCTION FOR

THE PURPOSE, SEEING IT PREPARES:—

Percentage Horae
Output per hour	Passing Power

200 x 200 Sieve Requ ired

Dust from South Wales Shale— 1 to 11 tons upwards 83 °/o 25
Dust from Yorkshire and other Shale— 1 to 11 tons upwards 87 °/o 25

No other System of Pulverizing can approach the

GRIFFIN & GIANT GRIFFIN MILL

for Low Cost of Grinding and Fineness of Product.

---- FOR FULL PARTICULARS, APPLY -

BRADLEY PULVERIZER Co.,

37, Walhrook, LONDON, E.C.