October 2, 1914.

THE COLLIERY GUARDIAN.

713

MINE FANS

Deliver more air at less cost for power than
the ordinary paddle blade Fan. Sirocco Fans
can be arranged for reversal of air current.

Sirocco Engineering Works,
BELFAST.

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality

COAL SCREENING & CONVEYING

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.



CONSIDERABLY OVER

inn pi #NT2 "°-.atbz.v

IUU ■ Ltlll I w AND THE colonie'

Estimates and Designs on application.

Agent for South Wales: A. LEIGHTON STEYENS, 16, Fields Road, Newport, Mon

Cloth, 2s.

Roan, gilt edges, 3s.

Calf, gilt edges, 4s. 6d.

COLLIERY MANAGER’S

POCKET

BOOK

Almanac and Diary,

FOR THE YEAR

1915.

(Being the Forty-Sixth Year of Publication).

(Will be Ready in November)

EDITED BY

“ MAC ”



PATENT

VALVE.

Suitable for the
Highest Steam Pressures.

Fitted with

Figure 8200—Inside Scx*ew

Figure 8205—Outside Scx*ew

flopkinson’sPlatnam ”

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and valve are withdrawn,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” Metai 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.

Upward* of KOO tons of Standard Steel Canting* kept in stock.

IVe can give immediate delivery of iron and steel Valve*.

HUBERT GREENWELL, F.S.S., Assoc.M.I.M.E.

LONDON:

The Colliery Guardian Company Limited,
30 & 31, Furnival Street, Holborn, E.C.

Illustrated Catalogue Post Free on Application.

J. HOPKINSON & C° LD Huddersfield,

Makers of Patent Safety Koller Mounting* 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,
Oldham, Blackpool, Paris & St. Petersburg.

No. 275._________________________