842 THE COLLIERY GUARDIAN. May 4, 1917. GREENWOOD & BATLEY Ltd., ALBION WORKS, LEEDS. Telephone 5200 LEEDS. I Teleerem.—"GREENWOOD. LEEDS." PATENTED BUCKETS' NEVER PASS - If - your water end of pump gives you trouble, Write us for List B. PUMP BUCKETS STEAM TURBINES HIGH PRESSURE,—EXHAUST 3-B.H.P. FROM Part of order for totally enclosed gas- proof Mining Motors with ball bearings and plate glass spy holes ELECTRIC MOTORS STEAM,—MIXED PRESSURE. TO 600-B.H.P. Flexible ’"rings • ■ ■ The Rings are Flexible, they Expand Automatically to Pressure, are Always Tight, are not Split, do not cause Uneven Wear, Reducing Friction to a Minimum. SOLE PROPRIETORS: DCJCING Ltd., Stratford, London, E. 15 Telegrams: Telephone: “ Dexine, Stratford, London.” 355 Stratford. AND GENERATORS. A.C. AND D.C. FOR ALL PURPOSES. The Use of Wood-Brake Blocks on Colliery winding engines is a source of danger from fire. Many instances have come under our notice where serious damage has resulted owing to the brake blocks firing. In addition there is the danger of the brakes failing to act owing to the wood carbonising. These dangers can be eliminated by the use of Ferodo linings on your brakes. These are absolutely spark-proof and non-inflammable. They have a far greater co-efficient of friction than wood and a durability many times greater than Hard Oak. Being non-abradent the drum surface is maintained highly polished and true, so that the greatest braking efficiency is constantly maintained. The use of Ferodo linings results in more coal being wound per day. CLUTCH AND BRAKE LININGS. Contractors to the War Office and Admiralty, London General Omnibus Co., & Underground Electric Railways of London & Paris. List H. from THE HERBERT FROOD COMPANY LTD., ’PHONES—19 & 20 CHAPEL. Works—CHAPEL-EN-LE-FRITH. WIRES “ FRICTION, CHAPEL.” We hold Stocks at LONDON, BIRMINGHAM, BELFAST, BRISTOL, CARDIFF, EDINBURGH, GLASGOW, LIVERPOOL, MANCHESTER & NEWCASTLE. Agents for India: THE ASBESTOS & BELTING CO., 3 & 4, Waterloo Street, CALCUTTA. L H3