August 23, 1918.

THE COLLIERY GUARDIAN. [ SUPPLEMENT PAGE XIII.

417

THE

STRONGEST

PERMITTED

DYNOBEL

No. 3

ARRANGE

WITH

NOBEL’S

TRIALS

EXPLOSIVES CO. LTD.,

GLASGOW.

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Winding Engines fitted with
Ferodo-lined Brakes

possess a 50 °/o greater margin of safety and can be worked at higher speeds than
those fitted with the old makeshift materials such as wood, leather and hemp.

These relics of an inefficient age have all the shortcomings common to makeshifts.
They are adversely affected by pressure, speed and heat, charring or failing through
changing conditions and requiring constant refitting owing to their short life.

Ferodo fabric was designed simply and solely to serve as a friction surface. Years
of experience were concentrated on producing a material not only to supersede the
makeshifts by eliminating their drawbacks, but to give a higher co-efficient of friction
which would enable engineers to raise their standard of production.

List H. from

THE HERBERT FROOD COMPANY LTD.,
Works - CHAPEL-EN-LE-FRITH.

Contractors to the War Office and Admiralty, London General Omnibus
Co., & Underground Electric Railways of London & Paris.

Depots at London, Birmingham, Belfast, Bristol, Cardiff, Edinburgh, Glasgow, Liverpool, Manchester and Newcastle.
Agents for India: THE ASBESTOS & BELTING CO., 3 & 4, Waterloo Street, CALCUTTA

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