June 2, 1916.

THE COLLIERY GUARDIAN.

1035

PLEXSIM ELECTRIC STILL

This Still is a compact and simple
apparatus for providing distilled water
for batteries of Miners’ Electric Lamps,
It is made in heavy gauge copper,
and is of robust construction.

The action is simple and automatic.
Absolutely no attention is required.

All parts, including the heating
elements, are easily accessible.

Send for descriptive leaflet No. G 622.

Simplex Conduits Limited,

Manufacturing Electrical Engineers,

GARRISON LANE, BIRMINGHAM.

PLOWRIGHT BROS, LTD.,

Brampton Iron Works, Chesterfield.

Speciality—

COAL SCREENING»CONVEYING

W

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.

H0PKINS0N-FERRANTI

PATENT

STOP VALVE

For Steam and High Pressure Water Service.

The Greatest Advance in Valve Construction of the Times.

PRINCIPLE :

Converting the pressure of
the fluid into velocity and re-
converting the velocity into
pressure, thereby passing an
amount of steam equal to full
carrying capacity of pipe.

SELLING POINTS:

Passes same quantity of steam as a full-
bore valve.

Seats half diameter of ordinary sluice
valve, therefore halves possible leakage.

Graded opening—no sudden rush of steam
in opening.

Is not subject to wedging action or
mechanical strain.

When the valve is open the seats are pro-
tected from the flowing fluid by the eyepiece.

Always easy to open and close under

Discs and Seats of

HOPKINSON’S

“PLATNAM” METAL

Suitable with Superheated Steam.

Illustrated Specifications and
Catalogue free on application.

....... , _Jliimli,,

at JMBB ,:X— .Ml

111

1___ _____.

igi GOSFORTH FOUNDRY Co. Ltd.,
Malleable Ironfonnders,
DRONFIELD, near SHEFFIELD.

Makers of all kinds of Driving and Elevator Chains, Sprocket Wheels, Elevator Buckets, 4c,

J. HOPKINSON & Co. Ld.,

Makers of Patent Valves and Patent Safety Boiler Mountings,

HUDDERSFIELD.

London, Glasgow, Edinburgh, Cardiff, Oldham, Paris & Petrograd.

No. 342.