October 25, 1918.

THE COLLIERY GUARDIAN.

[supplement PAGE XVII.]

895

COAL SAVING

BYSCIENTIFIC METHODS IN

THE BOiLER HOUSE jg

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 Engineering
the results of the working of 250
typical steam boiler-plants in Great
Britain, representing 8 years con-
tinuous working, and we shall be
very pleased to send you a copy
free of charge.

These results show an average nett
working efficiency of 60^ for all
industries, and in the case of collieries
50^. We are able to reorganise a
boiler-plant to run on 70—75X
efficiency under average condi-
tions, representing a saving on
colliery boiler-plants of—say 30^.

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

Uh’ohmltc & (Stwn.lEtxt

TECHNICAL CHEMISTS & ENGINEERS
SPECIALISTS IM FUEL ECONOMY
2.AUSTIN FRIARS. LONDON. EC 2
TeuEPHONE .. . .........  „.6292 London Wavu

Manchester. . .. ..... 30 Cross Street

Glasgow ...	.........B4 Hope Street

Laboratories ano Testing Station
Church Street Cheetham Manchester

On War, Admiralty, and
Crown Agents’ List.

Estab. 1893.

May we quote you ?

Sih

t'-l k

A- A. TATTERSAIaIj & Co., Makers, Blackburn.

We make VITRIFIED Corundum wheels for cutter and internal
grinding, and SEMI-VITRIFIED Abrasive wheels up to 48 in. dia.
for general work. Also Machines.

EJiillllllllllllllllllllllllllllllllllllllllllllllllllllllllilllllllllllllllllllllHIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIilllllllHIlUIIIIIIIIlF

HEYWOOD

&BRIDGES

IMPROVED

Unequalled for Colliery Haulage,

J-j AVE been used with complete success
in Collieries, Mines, Quarries. &c., during
the last quarter of a century.

rpHEY are safe, • efficient, durable, and
absolutely reliable.

THE heaviest type may be put into or
out of gear by a boy.

2OO'PAGE CATALOGUE (C33) of

Clutches, Gearing, & Haulages, post free.

I David Bridge & C?b?

= Castleton Ironworks,

I Castleton, W Manchester.

EE	London Address., yflf 35 Queen Victoria St E.C.

HEYWOOD A BR106ES
PATENT FRICTION CLUTCHES
AND

complete hauling GEARS



Tel. No. 4033 Central.

Manufacturers of—

COAL CUTTER PICKS,

MINING DRILLS,
SPECIAL TOOLS AND STEEL
OF ALL DESCRIPTIONS.

T. E. COPLEY & CO.,
Mowbray St., SHEFFIELD.

FOR

SALE

OR

HIRE.

Hire
terms
fur-
nished
on
appli-
cation.

lilM

Ltj.it niiTXiuvii?A

J.H.NaV,10R, -J
sou?, maker y
s^wigah

NAYLOR’S APPROVED
BIFOLD MAR8AUT LAMP.
Gives the best light, is the best
Gas Detector, and the Safest
Flame Lamp procurable.

NEW MINES ACT.

Approved
Miners’ Lamps

TO MEET ALL
REQUIREMENTS OF
THE ACT.

Arranged for Electric
Ignition and with Mag-
netic Lock. Particulars
furnished on application.
Demonstrations arranged
by appointment.

J. H, NAYLOR

Central Brass Works, LTD.
Established 1861. WIGAN,

Brand

Telephone	Tel. Address:

Bell: 829. IsIF “Vinco, Glasgow.”

“Vinco”

Miners’ & Sinkers’
OILSKIN CLOTHING

A Special Feature. At Keenest Prices.

Everything in Oilskins for Town 4 Country Wear.

M. BARR & Co. Ld.
83, Hutcheson St,, GLASGOW,
Contractors to	JHLdnxi.x'skl-tiy &

Numerous Corporations,

EBBS

‘PHONE: 1876.

GRAMS:“RINGS?BRADFORD.

ar®.—

THE
PERFECT-GAS-TIGHT-RING









T JOHN’S WORKS, DD A TWADD
\KEFIELDROAD. DnAUfUnU