September 29, 1916.

THE COLLIERY GUARDIAN.

597

PLOWRIGHT BROS. LTD

ooa

b:

Figure 82OO-Inside Screw
Figure 8205—Outside Screw

TUB

cup s9So

Union
Brand

Some Features of the Ring Lubricated Bearings

Sirocco Works, BELFAST.

2.

3.

4.

Extra long Bearing Surface with White Metal Lining.
The Thrust Collars are housed inside the Bearing.
Large Oil Reservoir and heavy Oil Rings.

Oil Leakage and Overflow eliminated.

CENTRIFUGAL
FANS.

“ Sirocco ” Fan Bearings are designed
for hard and continuous work.

- TRADE • » '^9^	
	
	
■ ■ • MARK • •	

Brampton Iron Works, Chesterfield

Speciality—

COAL SCREENING t CONVEYING

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.



WORK IN
BRITAIN
COLONIES.

CONSIDERABLY OVER

100 PLANTS H

Estimates and Designs on application.

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



EUgSilL

nson’S

LATENT

MAC”

VALVE

1

Suitable for the
Highest Steam Pressures.

Fitted with

Hopkinson’sPlatnam ”

Metal Renewable Valve
and Seat.

BOLTS



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and valve are withdrawn,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” MetaJL
which is suitable for superheated steam and bad waters.

There axe many valves with renewable valve and seat upon the market, hut 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 SOO tong of Standard Steel Castings kept in stock.
We can give immediate delivery of iron and steel Valves.

HOWARD STREET
OCJSPPQBCjIX

Illustrated Catalogue Post Free on Application.

J. HOPKINSON & C« LD 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,
Oldham, Blackpool, Paris & Petrograd.

No. 342.