July 9, 1915.

THE COLLIERY GUARDIAN.

63

PLOWRIGHT BROS. LTD

Brampton Iron Works, Chesterfield.

Speciality—

MINE FANS

Give Satisfaction.

Extract of Letter from a Mine Manager t

“I can say without hesitation that the Fan
has given us every satisfaction, and that it is
everything the Makers represent it to be.
This Fan has proved that it is superior to
any other Fan that we have had in use.”

WELL DESIGNED AND WELL MADE

THEREFORE

EFFICIENT AND RELIABLE.

COAL SCREENING«CONVEYING

■--. - T.:

St

' -_F :

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.

DAVIDSON & Co. Ltd.,

Sirocco Engineering Works,

BELFAST.

CONSIDERABLY OVER
100 PLANTS
Estimates and Designs on application.

Ajant for South Wales: A. LEISHTON STEVENS, 15, Fields Road, Newport, Won.

WORK IN
BRITAIN
COLONIES.

PRINCEPS & CO.,

SHEFFIELD.

Patentees and Manufacturers of

Patent “Deflector” Oil
Extractor,

“ Little Scorcher” Steam
Dryer,

Steam Traps,
Metallic Packings, etc.

Extractors for the following Steel
Works are erected or in the
course of erection*

Patent Shaft & Axletree Co.
Frodingham Steel & Iron Co.
Barrow Haematite Steel Works.
Parkgate Steel & Iron Co.

Powell Duffryn Steam Coal Co.

Blaenavon Company Ltd., Etc.

HIGHEST EFFICIENCY GUARANTEED.

N

s

/

PATENT

SHELTERED SEAT TRYCOCK

- For -

WATER GAUGES.

1

I

Sent on Approval.

SPECIFY FIG. 6685

Fig. 6 68 5.



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 “PLAINAM”

METAL

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

Upward* of 500 ton* of Standard Steel Casting* kept in Stock.
We can give immediate delivery of iron and steel valve*.

Illustrated Catalogue Post Free on Application.

J. HOPKINSON & C° L° 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 & St. Petersburg.

No. 306.