June 6, 1913.

THE COLLIERY GUARDIAN.

1173

TURBINE DEPARTMENT.

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The De Laval Steam Turbine is demonstrating its efficiency under almost every condition

in over 5,000 power plants. Its uniform
steam consumption and reliability have

efficiency under varying loads, economy in

kept it in the forefront of

Prime Movers.

TURBINE

PUMPS.

Mixed Pressure and Low Pressure
Steam Turbines

for the Utilisation of Waste Steam.

TURBINE

FANS.

Greenwood & Batley Ltd., Leeds.

INDISPENSABLE TO STUDENTS.

The HART FORGE SIGHT FEED OIL PUMP.

THE

MECHANICAL ENGINEERING
OF COLLIERIES.

By T. CAMPBELL FUTER5, M.I.M.E.

THIS IMPORTANT WORK CONSISTS OF:

Vol. I.—Bound in Cloth. Price 21s. net.

Part I.—Boring, Sinking, Surface Arrangements, Headgears,
Shafts. 128 pp. Illustrated by 294 Diagrams and Illus-
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Part II.—Winding. 169 pp. Illustrated by 337 Diagrams and
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Part Ill.—Heapsteads, Screening and Washing. 177 pp. Illus-
trated by 427 Diagrams and Illustrations.

Separate parts in Paper Covers, Price 5s- 8d. each net.

Vol. II.—Haulage, Pumping, Power and Coke Ovens, and a
Complete Index to Vols. I. and II. 294 pp. Illustrated by 585
Diagrams and Illustrations.

Paper Covers, Price 8s. 6d.; Bound in Cloth, 10s. 6d. net.

SUPPLEMENTARY VOL.—Ventilating Fans, Coal-Cutting and
Conveying Machinery, Ambulance and Rescue Appliances.
238 pp. Illustrated by 294 Diagrams and Illustrations.

Paper Covers, Price 8s. 6d. ; Bound in Cloth, 10s. 6d. net.

Publishers : THE COLLIERY GUARDIAN CO. LTD.,

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

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UMPNi* •,

Pays for itself by
SAVING OF OIL.

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FIRST ORDERS always
on approval.

Tli e only I eally Satisfactory
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GREEN & BOULDING Ltd.

ENGINEERS,

28. New Bridge St ,Lohdon. E.C.

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