720

THE COLLIERY GUARDIAN.

October 8, 1915.



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The

Gosforth

Foundry

Co. Ltd.,



Malleable
Ironfounders,

Dronfield,

near

Sheffield.

To Colliery Proprietors,
IMPORTANT Engineers and
.......................-...... Contractors, &c.

To secure dependable winding and absolute
safety, all gear brakes should be fitted with
Cresswells’ “CHEKKO” Semi-metallic Asbestos
Brake or Clutch Linings.

Their grip is firm as a rock, yet responsive
and pliant as a hand grasp. “ CHEKKO ” provides
instant and perfect retardation at all speeds and
under all loads. “ CHEKKO ” is a great precaution
against overwinding.

We make no brakes of cotton fabrics or other
than of pure Asbestos.

“ CHEKKO ” Brake Linings easily outlast
many times all others, and are, therefore, not only
the best in quality, but also far the cheapest.

Write for Samples, Diagrams and Prices, to :

CRESSWELLS’ Limited,
Asbestos Spinners & Manufacturers,
Wellington Mills, BRADFORD (Yorks).

Telegrams: “ Asbestos, Bradford.” Phone: 950 Bradford.

Makers of all kinds of Driving and Elevator
Chains, Sprocket Wheels, Elevator Buckets, &c.

GREENWOOD & BATLEY Ltd.,

ALBION WORKS, LEEDS.

Telephone—5200 LEEDS.

Telegrams—“GREENWOOD, LEEDS.”

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STEAM TURBINES

HIGH PRESSURE—EXHAUST STEAM—MIXED PRESSURE.
FROM 3-B.H.P. TO 600-B.H.P.

Part of order for
totally enclosed gas-
proof Mining Motors
with ball bearings and
plate glass spy holes.

Ma

CHECKS



208 pages f’cap folio. Over a hundred illustrations and 60 plates (coloured).

PRICE IQs. (10s. 7eL post free).

RECORD OF

FIRST SERIES OF THE

BRITISH COAL DUST

EXPERIMENTS

CONDUCTED BY THE

COMMITTEE APPOINTED BY THE MINING ASSOCIATION OF
GREAT BRITAIN.

A Record of the Experiments carried out during 1908 and
1909 at the Aitofts Experiments Station.

ELECTRIC MOTORS

AND GENERATORS,? A.C. AND D.C. FOR ALL PURPOSES.

Published by—

THE COLLIERY GUARDIAN COMPANY LTD.,

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