June 29, 1917.

THE COLLIERY GUARDIAN.

1207

Proof!!!

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

pHE Simp!ex System of Steel
Conduits for the efficient encase-
ment of Electric Wiring Cable, con-
sists of a combination of smooth
bore Steel Tubes or Conduits, used
in conjunction with malleable cast-
iron fittings and accessories, so as to
form a complete Covering, specially
designed to meet the requirements
of high-class installation work, and
the saving of time and labour in
erection, with the further object of
effecting a general reduction in cost
of efficient Conduit Wiring.

The Simplex Conduit System
has been developed during a period
of many years, and is the outcome
of patient labour on the part of
our designing and manufacturing
engineers, whose energies have been
directed continually towards the bet-
terment of the Simplex Conduit
Wiring System. Many thousands of
installations, carried out on the
Simplex System, are giving con-
tinuous satisfaction in all parts of
the world to-day.

We have it
demonstrated daily
by—

Satisfied

Customers

Repeat Orders
Appreciative

Letters

Convincing
Evidence

Speciality—

COAL SCREENING « CONVEYING

WE HAVE GAINED the REPUTATION
FOR GIVING STERLING SERVICE.

Simplex Conduits

Limited.

Head Office and Works:

Garrison Lane, BIRMINGHAM.

113-7, Charing Cross Road, LONDON.

MANCHESTER. GLASGOW. BRETOL.
NEWCASTLE. LEEDS. LIVERPOOL.
SWANSEA. CARDIFF .nd SHEFFIELD

* .

■

? I*

111: *

II1

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.



CONSIDERABLY OVER

100 PLANTS

NOW AT WORK IN
GREAT BRITAIN
AND THE COLONIES.

Estimates and Designs on application

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

6^ TO 3% SAVING IN FUEL, or 1 *2% TO 1 5% MORE STEAM

SINGLE HOOD

Circulator

39, Victoria Street, London, S.W. 1

ELECTRIC PLANT^ACCESSORIES

telep: 2973 (TWO L/NES)

TELEG THOR”

CABLES & SWITCHES.

CARBON &- METAL
LAMPS.

HASLAM & STRETTON,L\D

11,WINDSOR PLACE,
. . CARDIFF. . .

PROTAN

For BOILERS.

55

A Commercial form of TANNIC ACID

(Containing 48—50 °/o TANNIN).

BRITISH M A N f ACTURE,

In conjunction with Soda Ash

Enables the Boiler User to compound the most efficient

------ SCALE REMOVER ——

at only a fraction of the cost of Proprietary Compositions.

Composition oa>n. be based on. analysis of water.

Samples and further particulars from

CLEMONS, MARSHALL & CARBERT,

Branch of The Yorkshire Dyeware and Chemical Co. Ltd., Leeds.

PATENT

SHELTERED SEAT TRYCOCK

- For -

WATER GAUGES.

SPECIFY FIG. 668 5

Sent on Approval.

Fig. 6685.

ADVANTAGES :—

NO ASBESTOS PACKING
TROUBLES.

No plugs to work loose
and leave the packing faces,
causing cutting and leakage.

No circular action to cause
grooving.

Easy method of operating,
as there is no packing fric-
tion to overcome.

Is not affected by expan-
sion.

Large outlet for discharge
of sediment, &c.

Self Cleansing.

Main valve opened and
closed at atmospheric pres-
sure. which overcomes the
cutting action of the steam
and water at the point of
opening and closing.

VALVE AND SEAT OF

HOPKINSON’S “PLATNAM”

METAL,
which does not cut and score
like gunmetal & other alloys.

Upward, of 500 ton, of Standard Steel Catting, kept in Stock.

We can give immediate delivery of iron and tteel valve,.

Illustrated Catalogue Post Free on Application.

J. HOPKINSON & C° LD Huddersfield.

Maker, of Patent Safety Boiler Mounting, and Valve,

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 and Showrooms—London, Glasgow, Edinburgh, Cardiff,
Oldham, Blackpool, Paris & Petrograd.

No. 374.