562

THE COLLIERY GUARDIAN.

September 17, 1915.

Slower

.STEADILY^

SW RAISE.
WSTESDILYj

RAISE^®
^STOP/^B

WINDING
SIGNALS
“NON-CUMULATIVE.”

ELECTRIC.
MECHANO-ELECTRIC.
MECHANICAL.

SIMPLE.

EFFICIENT.
INEXPENSIVE.

The “DAVIS-MACDONALD” BALL-RACE
CONTACT-MAKING RELEASE

is the most efficient Release in connection with Visual Signals.
Signals cancelled immediately the engine starts, also stops.

Emergency Signals shewn during Winding.

The contact-
making arms
are

ENTIRELY
ENCLOSED
from dust, oil,
etc. (not shown
in the
illustration).



SEND FOR LIST 41 v.

JOHN DAVIS & SON (Derby) Ltd.

All Saints Works, DERBY ; & 17, Victoria Street, Westminster, S.W.

STANLEY’S NEW MODEL
TRANSIT THEODOLITES.

STANLEY

The Largest Manufacturers of

SURVEYING and DRAWING INSTRUMENTS

in the World.

Our DRAWING INSTRUMENTS are made
throughout in our own factories, and if quality
be considered are cheaper than German ones.

Please send for our “ K.12 ” Catalogue, and
compare our prices with those of other
first-class makers.

Also for particulars of our London made
DRAWING PENCILS.

W. F. STANLEY & Co. Id.,

286, High Holborn, London, W.C.

BUMSTED & CHANDLER LTD.

Cannock Chase Foundry and Engine Works,

HEDNESFORD, STAFFS.

Telegrams—“ Bags, Hednesford.”	Telephone—48 Cannock.

FANS

AND
ENGINES

FOR

MINE

Ventila=
tion,
with
Special

Reversing
Doors.

“h-*

■

RpCoiUfh

-L, ’ '■ •

•;*' Hl’-

High
Speed
Engines
FOR
LIGHTING
and
POWER.

Centri-
fugal
Pumps.

Haulage
Gears,
&c.





Above illustration shows our Steel Cased Reversing Fan, which is passing a larger
volume of air than the 40 feet brick-cased fan alongside it.

- li

Standard M.P. Turbine.

STEAM
TURBINES.
High Pressure
Mixed Pressure
Low Pressure
FOR
Ironworks
AND
Collieries.

Reliable.

Economical.

Oompact.

Richardsons Westgarth & C“ LTD

MIDDLESBROUGH. HARTLEPOOL. SUNDERLAND.

COLLIERY
OFFICIALS’
LEATHER
CAP

Is Comfortable,
Light and Effective.

Made to fold foi
Pocket
or otherwise.

Send 6/- P.O. for
Sample Cap to the
Maker—

GEO. WHITE,

31, High Street Normanton, YORKS.

Class B

Save Money - Save Goal - Save Steam

By adopting FORREST’S PATENT AUTOMATIC

Cylinder DRAIN COCKS
on your Compound, Winding, Hauling, and all
your Stationary Engines, Steam Winches, &c.

(Thousands in use), now fixed on most new Engines
turned out by leading Engineers.

The Safest Automati; Drain Cock ever fixed on Com-
pound Condensing Engines, most positive in action.

Makers of High-class Gunmetal Gland Taps.
Wheel Valves, &c,

For Prices, Particulars and Testimonials, apply Sole Makers,

APPLETON & HOWARD,	ST. HELENS, LANCS.

Contractors to the War Office.

To Colliery Proprietors,
IMPORTANT	Engineers and

"	Contractors, &c.

To secure dependable winding and absolute
safety, all gear brakes should be fitted with
Cresswells’ “CHEKKO” Semi-metallic Asbestos
Brake or Clutch Linings.

Their grip is firm as a rock, yet responsive
and pliant as a hand grasp. “ CHEKKO ” provides
instant and perfect retardation at all speeds and
under all loads. “ CHEKKO ” is a great precaution
against overwinding.

We make no brakes of cotton fabrics or other
than of pure Asbestos.

“ CHEKKO ” Brake Linings easily outlast
many times all others, and are, therefore, not only
the best in quality, but also far the cheapest.

Write for Samples, Diagrams and Prices, to :

CRESSWELLS’ Limited,

Asbestos Spinners & Manufacturers,
Wellington Mills, BRADFORD (Yorks).
Telegrams: “ Asbestos, Bradford.” Phone: 950 Bradford.