March 20, 1913.

THE COLLIERY GUARDIAN,

589

INDUCED DRAFT FAN

IS A GOOD INVESTMENT

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Special i ty

COAL SCREENING & CONVEYING.

THE cost of a “ Sirocco ”
Induced Draft Plant is
about 30 to 40 °/0 of that of a
chimney of equal capacity.

THE power to drive the Fan
varies from 3/4ths to 2 °\a
of the total power generated,
while the saving frequently
amounts to from 15 to 20 °/0.

INCREASES the steaming
capacity of existing boilers
and thereby increases the
Works production.

Send for
Catalogue
19 H.

PERMITS the use of the
waste heat in the flue
gases by means of economisers,
superheaters, &c.

REDUCES the Coal Bill be-
cause cheaper coal can be
used than with natural draft.

■IN

»■$

__________ „

...

■ . '

-

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER,









CONSIDERABLY OYER

100 PLANTS -H=:

Estimates and Designs on application.

Agent for South Wales: A. LEIGHTON STEVENS, 15, Fields Road, Newport, Mon.

TURBON.

The LATEST THING in FANS.

Equally suitable for Mine Ventilation, forced and induced
draught, or any other purpose.

Great strength, simplicity and silence.

Highest efficiency. Perfect balance at all speeds.

Suitable for all pressures.

Resists high temperatures without distortion.

No rivets in blades.

Manufactured by THE WADDLE PATENT FAN CO. LTD.,

--- FOR THE -

TURBON PATENT FAN CO. LTD.,

LLANELLY.

WAI LES, DOVE & Co.’s

Patent BITUMASTIC Solution

------------------------------ GIVES -

PERMANENT PROTECTION FROM
CORROSION TO ALL IRONWORK.

A BRILLIANT BLACK COLOUR.	SUPPLIED READY FOR USE.

EASILY APPLIED BY UNSKILLED LABOUR.

CHEAPER THAN ORDINARY OXIDE PAINTS, OWING TO ITS
GREATER COVERING CAPACITY AND LASTING QUALITIES.

WRITE FOR PAMPHLET OF FULL PARTICULARS TO—

Head Office -NE WCASTLE-ON-TYNE.

Also at London, Liverpool, Manchester, Glasgow, Cardiff, Birmingham, Leeds,
Hull, &c.
Every Office on the Telephone	——	Telegrams “BITUMASTIC.”

Brussels Exhibition : “ Grand Prix?’ Allahabad, 1910.
Roubaix Exhibition, 1911: “Grand Prix.”

LATENT

“MAC” VALVE.

Figure 8200—Inside Scx*ew

Figure 8205—Outside Scxrcw

io®

Suitable for the
Highest Steam Pressures.

Fitted with

Hopkinson’s u Platnam ”

Metal Renewable Valve
and Seat.

All parts interchangeable.

All joints made by metallic
contact, thereby obviating the
necessity of using jointing
material.

By removing the cover the seat
and valve are withdrawn,
enabling new parts to be in-
serted in about a minute’s
time, and without the neces-
sity—as with ordinary valves
—of removing the valve body
from its fixed position.

The Renewable Valve and Seat is made of

Hopkinson’s “ Platnam ” Metal

which is suitable for superheated steam and bad waters.

There are many valves with renewable valve and seat upon the market, but under modern
conditions and high pressures do not last any length of time owing to the deterioration which
takes place on the valve and seat, and consequently the renewing of the parts is a frequent
occurrence. We have tried our “Platnam” Metal under severe conditions, and have every
confidence in recommending it to work under high temperatures. The “ MAC ” valve has
been designed to adopt this metal for the renewable valve and seat.

Upwards of 500 tons of standard Steel Casting* Kept in stock,
ffe can give immediate delivery of iron and steel Valves.

Write for illustrated specifications and catalogues free.

J. HOPKINSON & 0° L° Huddersfield,

Makers of Patent Safety Boiler Mountings and Valves

For High Pressure Superheated*Steam, High-class Exhaust and Water Sluice
Valves for Condensing Plants, &c., Automatic Exhaust Valves, Reducing
Valves, Steam Traps, &c., &c.

Depots & Showrooms—London, Glasgow, Edinburgh, Cardiff,
No. 236. Oldham, Blackpool, Paris & St. Petersburg.