Apbil 11, 1913.

THE COLLIERY GUARDIAN.

741

Walter Scott Ltd.

Leeds,	LEEDS STEEL WORKS.	England.

PLOWRIGHT BROS. LTD.,

Brampton Iron Works, Chesterfield,

MANUFACTURERS OF

BRITISH STANDARD ROLLED STEEL JOISTS, CHANNELS,
TRAMRAILS ANO PERMANENT WAY RAILS, &c.

Example of 10 in. x 6 in. 42 lb. R S Joists curved for Framework to Roadway.

ROLLED STEEL JOISTS for PIT PROPS,
FRAMEWORK TO ROADWAYS, &c.

/ <»
/
i* J

Pit Head Frame.

Erected in Works
jML for inspection.

<$• \ I

< V I

V'® la
a,

STRUCTURAL STEELWORK FOR BUILDINGS, &c.

Mild Steel Blooms, Billets, Slabs, Tinbars. Rounds & Flats.

Rolls cut for Special Sections and to approved quantities.

Books of Sections and other information on application.

WAILES, DOVE & Co.’s
Patent BITUMASTIC Solution
---------------- (.IVES ---

PERMANENT PROTECTION FROM
CORROSION TO ALL IRONWORK.

A BRILLIANT BLACK COLOUR.	SUPPLIED READY FOR USE.

EASILY APPLIED BY UNSKILLED LABOUR
CHEAPER THAN ORDINARY OXIDE PAINTS, OWING TO ITS
GREATER COVERING CAPACITY AND LASTING QUALITIES.

WRITE FOR PAMPHLET OF FULL PARTICULARS TO-
Head Office—NEWCASTLE-ON TYNE.
Also at London, Liverpool, Manchester, Glasgow, Cardiff, Birmingham, Leeds,

Hull, &c.

Every Office on the Telephone	- Telegrams “BITUMASTIC.”

ROPE
DRIVING.

FOR EFFICIENCY
DURABILITY USE ™

Telegrams:
“ Kenyon, Dukinfield.”

DIPLOMAS OF HONOUR

BRUSSELS and TURIN.

Illustrated Lecture on—
‘ THE TRANSMISSION
OF POWER BY
ROPES.”

Post Free on Application.

&

Telephone:

494 Ashton.

LONDON OFFICE :

95 & 97, Finsbury Pavement,
E.C.



Wm. KENYON & SONS Ltd ,

CHAPEL FIELD WORKS,

DUKINFIELD, near MANCHESTER.

S pedality -

GOAL SCREENING & CONVEYING,





Illi

I, •	. . _>

■■■>* ; •'>*

ACTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER

CONSIDEBABLY OVER

inn pi antq

I OU I I o and TH£ colcn,es

Estimates and Designs on application.

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

Brussels Exhibition: "Crand Prix.”

Roubaix Exhibition, 1911: “Grand Prix.

HOPKINSON- FERRANTI

STOp VALVE

For Steam ano High Pressure Water Service.

The Greatest Advance in Valve Construction of the Tinies.

LESS WEIGHT, COST AND LEAKACE.

This Valve has been invented and
designed to enable a valve having
operative parts of half the ordinary
diameter to pass a large amount of
steam through a small working part.

PRINCIPLE :

Converting the pressure of the
fluid into velocity and re-con-
verting the velocity into pressure,
thereby passing an amount of
steam equal to full carrying capa-
city of pipe.

SELLINC POINTS:

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

Reduction in cost over ordinary fullway
yalves.

Considerably less weight.

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

Reduces vibration in pipes.

Graded opening—no sudden rush of steam in
opening.

No hve-passes necessary. thereby saving their
COST

1b not subject to wedging action or mechani-
cal strain.

The discs slide with a flexible pressure upon
the seats, thereby preventing cutting & scoring.

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

Always easv tn nnen and clnse under pressure.

It is au ideal valve for high temperature
superheated steam, as there are no cast iron
internal working parts.

Discs and Seats of

HOPKINSON’S

“PLATNAM” METAL

Suitable with Superheated Steam.



Hl)

VALVES IN STOCK WITH IRON OR STEEL CASINGS.

UPWARDS OF 8,000 IN USE AT 220 Collieries, 180 Electric Power Stations, 90 Iron
and Steel Works, 130 Textile Mills, Turbine Makers, &C-, &c.

HOPKINSON’S 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.

Upwards of 500 tons of Standard Steel Castings kept in stock.
We can give immediate delivery of iron and steel valves.

Write for Catalogue 660, 4th Edition.

J. HOPKINSON & CO. LD.. Huddersfield.

No. 286 London, Glasgow, Edinburgh, Cardiff, Oldham, Paris & St. Petersburg.