March 9, 1917.

THE COLLIERY GUARDIAN.

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PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality—

COAL SCREENING « CONVEYING

,'ffi

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SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.

Simplex Conduits, Limited,

GARRISON LANE,

113-117, Charing Cross Road, London, W.C.

16, Corporation Street, Manchester.

72a, Waterloo Street, Glasgow.

61-65, High Bridge, Newcastle.

10 & 11, Denmark Street, Bristol.

BIRMINGHAM.

6, White Horse Street, Leeds

96, Whitechapel, Liverpool.

14, Heathfield Street, Swansea.

4, Westgate Street, Cardiff.

1, Crimon Place, Aberdeen.

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 8^ SAVING IN FUEL, or 1 Q.% TO 1 5% MORE STEAM

- u

V 4

j

Ji ji j^n

S O N

PATENT

SINGLE HOOD

Circulator

39,Victoria Street, London, S. W.

k ii it i

SHELTERED SEAT TRYCOCK

MARKS. STAMPS BRANDING IR0H5.

Brass Labe/s & 7/rne Cteecks.

Se/s of lefter & figure PuacPes, firn toss fag Presses.

Brass/timeP/ates, Bteufi/s, Pfouktersle/tersi figures.

pies. E.PRYOR& SOPS, Seals.

II2-HB ROCKINCHAM st SHEFFIELD.

PROTAN A Commercial form of TANNIC ACID

___	(Containing 48—50 °/o TANNIN).

For BOILERS.

BRITISH MANUFACTURE.

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. l>e based on. analysis of wa.tiex**
Samples and further particulars from
CLEMONS, MARSHALL & CARBERT,
Branch of The Yorkshire Dyeware and Chemical Co. Ltd., Leeds.

- For -

WATER GAUGES.

SPECIFY FIG. 66 8 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 *teel valve*.

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

No. 374.