Augvst 7, 1914	THE COLLIERY GUARDIAN.	339

.JXSio, COAL DISTILLATION CO., Middlesbrough. =

BY-PRODUCT COKE OVENS,

Waste Heat and Regenerative Types

(Huessener & Collin Patents).

NEW DIRECT RECOVERY OF BY-PRODUCTS.

Benzol and Tar Distillation Plants.

THE AVONSIDE EIGINE CO. LTD.

BRISTOL.

FINEST

BEST

womcs LOCOMOTIVES.

SUMMERSON 4 SONS LTD

ALBERT WORKS, DARLINGTON.

Complete.

Sidings

Contracted f<

MANUFACTURERS of SWITCHES and CROSSINGS,

CHAIRS, SPIKES, FISH PLATES, PLATELAYERS’ TOOLS & GENERAL CASTINGS.

FISH PLATES & BOLTS for various sections of Rail kept in Stock

FOUNDED 1895.

THE

QUARRY,

The Obgan of the

Stone, Marble, Slate,
Lime, Clay and
Cement Trades.

Circulating amongst

QUARRY OWNERS and
MANAGEES,
ARCHITECTS,
ENGINEERS,
SURVEYORS,

STONE MERCHANTS, &c

Price—

6d. monthly.

Annual Subscription,
7 s. Sd. post free
(payable in advance).



g g



Offices—

30 & 31, Furnival Street
Holborn, London, E.C.

CORRUGATED and FLAT SHEETS and
GALVANISED GOODS; TUB & CORNER PLATES;
AIR PIPES and all Colliery Requirements.

J. SUMMERHILL & CO.,

Beaver Works, WOLVERHAMPTON.

Also These Mountings

BECAUSE

—



THEY ARE

made in the Steam Users' Interest.

SEND FOR CATALOGUE FREE	ESTAB. 1877.

Over 2,000 British Steam Users are now
using the Baldwin ** BET ALL ” Valves.

JAMES BALDWIN & CO., KEIGHLEY,

Engineers and Founders.

g MOST IMPORTANT POINTS

to have in mind when purchasing Machine-cut Gearing.

THE

GENUINE

DOUBLE HELICAL GEARS

Offer all this and more. Made from specially selected
material, with teeth accurately cut in one continuous
piece direct from the solid—they are an ideal drive
for heavy power transmission.

SILENT RUNNING.

David Brown & Sons <hfd> Ltd., Huddersfield.