November 26, 1915.

THE COLLIERY GUARDIAN.

1075

THERE IS A

CENTRIFUGAL FAN
for every purpose for which a
:	: Fan can be used. :	:

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield.

Speciality—

COAL SCREENING. CONVEYING

Fans for Dust Removal

These Fans can deal with Dust of every
description. Write foi Bulletin No. 2009.

■■ ■ ■ ■ ■

SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER.



Davidson & Co. Ltd.,

Sirocco Engineering Works,

BELFAST

CONSIDERABLY OVER

100 PLANTS H

Estimates and Designs on application.

Agent for South Wales: ». LEIGHTON STEVENS, 15, Fields Road, Newport, Moo.

WORK IN
BRITAIN
COLONIES.

SUTCLIFFE’S

COAL CUTTERS

DISC & CHAIN TYPES, m
pattern, for thin or thick seams, with shallow or deep cuts.
Compressed Air or Electrical Drive.

Coal-Face Conveyors,

capacity, constant in work, noiseless in the face and most
easily moved forward.

Roadway Conveyors, „hlch m.„a

freely from the face to admit ripping In the gateway.

to keep a constant supply of tubs
between the engine plane and coal face with instantaneous
extension of endless rope.

Wlf®	for conveyors of all kinds.

Thomson’s Non-Overwind,

simplest, safest, surest, and cheapest.

Sutcliffes Universal Sounding

& Displaying Signalling
ApparatUS, fully complying with Regular
lion 95 of the NUNES ACT.

NOTE.—The above machinery is all patented or protected and makers
or users of infringing articles will be liable to be prosecuted.

FULL PARTICULARS FROM

RICHARD SUTCLIFFE,

Universal Works, HORBURY, WAKEFIELD, England,

HOPKINSON-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
pressure.

Discs and Seats of

HOPKINSON’S

“ PLATNAM ” METAL.

Suitable with Superheated Steam.

Illustrated Specifications and
Catalogue free on application.

J. HOPKINSON & Co. Ld.,

Makers of Patent Valves and Patent Safety Boiler Mountings,

HUDDERSFIELD.

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

No. 342. ______________________