June 26, 1914.

THE COLLIERY GUARDIAN.

1471

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Banksman

Onsetter

MEN
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COWER
STEADILY,

RELEASE
FOR BOTH
INDICATORS

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MEN
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RAISE '
^STOP

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S.DOWN

ZERO /

\	/ RAISE '

STOP

APPROVED

WINDING

SIGNALS

complying with Rule 95,
General Regulations, 1913.

DAVIS’S

Self-contained

SOLENOID BELL

with DIAL INDICATOR.

System 102.

Patent applied for No. 7241.

SIMPLE.

EFFICIENT.
INEXPENSIVE.

MULTIPLE CABLES DISPENSED WITH.

Can be worked off existing
electrical or mechanical wires.

Send for List 41 V.

JOHN DAVIS & SON

(Derby) LTD.,

ALL SAINTS WORKS, DERBY;

& 17, Victoria St., Westminster, London, S.W.

Telegrams—‘’Davis, Derby.” Telephone—240 Derby.

KEITH Centrifugal FANS

QUICK DELIVERIES.

27, Farringdon Avenue, LONDON.

And at Newcastle, Glasgow, Manchester, Leeds, &c.

A large single - inlet KEITH FAN with
6 0-H.P. motor and flexible coupling drive.

KEITH MINE FANS in hand, single
and double inlet, tor delivering up to
400,000 cubic feet of air per minute.

“PALMETTO

REG.TRAOI MARK
PACKING

We are anxious to

MADE TO GIVE LONG
SERVICE.

IF you knew of a packing that
would positively last longer
than the one you are now
using, would you not adopt it ?

prove to you that *' Palmetto ” has
lasting qualities unknown to other
packings.

What size may we send you as
a free working sample ?

GREENE, TWEED & CO

SOLE MANUFACTURERS,

Queen Anne’s Chambers,
Westminster, London, S.W.

BOILER HOUSE ECONOMY.

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





The illustration shows the Bars’ made in {5 ft. or 6ft. 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.

Corrosion Permanently
Prevented

PREVENT COAL MINE EXPLOSIONS
by dusting your mine with stone ground in the

GIANT GRIFFIN MILL,
As supplied to the leading Collieries.

Advantages—

MAXIMUM PERCENTAGE OF “FLOUR” OR IMPALPABLE
MAXIMUM FINENESS.	POWDER.

MAXIMUM OUTPUT.

MINIMUM POWER.

MINIMUM WEAR AND TEAR.

No Auxiliary Apparatus required for
Finishing the Product.

Heavy Construction.

OVER 3,ODO CRIFFIN MILLS INSTALLED.

Also extensively used for grinding
COAL. LIMESTONE. POUTLAND CEMENT.
PHOSPHATE ROCK. ORES OF ALL KINDS.

Write for full particulars to Sole Manufacturers :

WAILES, DOVE & CO. LTD., Newcastle-on-Tyne

Full particulars on application to—

BRADLEY PULVERIZER CO,

37, WALBROOK, LONDON, E.C.