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[supplement page X.]

THE COLLIERY GUARDIAN.

May 31, 1918.

COLLIERY BOILERS A SPECIALITY.

Telephone No. 8 1.

ARNOLD’S PATENT

BULBOUS FLUE.

Established 185 6

Root of Flange
If' Radius

HOPKINSON-WEST patent

EXPANSION SAFETY FLUE

L——--<

JL

•w

.

“This Boiler has now worked 17 years (at 200 Ih. pressure) without repairs.’’ Fitted with Arnold’s Patent Bulbous Flues.







Also TOLUOL PLANTS, BYE-PRODUCT PLANTS and CHEMICAL PLANTS erected and maintained.

WM. ARNOLD & CO., BARNSLEY.

John Russell & Co. Lo.,

ALMA TUBE WORKS, WALSALL.

E'BTTIKSP'C: 0F ALL K1NDS AND
rill HlUw for ALL purposes

On Admiralty
List
of Contractors.

AULD’S PATENT

STEAM REDUCING VALVES

Also Makers of Special FULL SORE
Patent Steam Reducing Valves for
Blowing, Winding, Pumping and other
Engines, and for supplying Surplus or
other steam from high to low pressure
boilers, &c.	__________________

DAVID AULD & SONS,

Patentees Makers, LTD.

Whitevale Foundry, GLASGOW.

1Y/TAPS of the British Coalfields.

1. Scotland. 2. North of England. 3. South Wales. 4. North
Midlands. 5. South Midlands. Sheet, 4s. each; Mounted on Cloth on
Rollers, or in Case, 6s. each.—THE COLLIERY GUARDIAN CO. LTD.
30 & 31, Furnival-street, Holborn, London, E.C. 4.

Telephone-
687 Central.

Telegrams—

“ Octagon, Sheffield.”

R. H. MIDDLETON & CO.

SUCCESSORS TO

THE GRAHAM ROBINSON STEEL COMPANY LIMITED.

Neepsend Rolling Mills, SHEFFIELD,

MANUFACTURERS OF

MINING STEEL & TOOLS

Telephone—4560 (two lines).	Telegrams—“Belting, Sheffield.**

RENTON HOLDSWORTH & CO. LTD.,

Belting and Ruhber Manufacturers,

Offices : NORFOLK STREET.	SHEFFIELD. Works : SYCAMORE STREET.

Speciality s

CONVEYOR BELTING.

DRIVING BELTS.