August 2, 1918. THE COLLIERY GUARDIAN. [supplement PAGE VII.] 253 A high return on outlay assured with coal at present abnormal Initial cost of Economiser repaid in many instances in two to three years. A reduction in the coal account means an increase in dividend. Steaming capacity of boilers in- creased. SAVES ONE WAGON OF COAL IN EVERY FIVE. ECBN0MI8ER Reduces the coal consumption 15 to 20 per cent. Every ton of coal saved by the Economiser at a colliery is another ton for sale at market price. Coal saving commences imme- diately Economiser is connected up. === Write for Pamphlet “ B.Q.” to: E. GREEN & SON L" Economiser Works, WAKEFIELD. THE BRITISH ROPEWAY Tele: Centra! 11250 7 MINCING LANE, DISPOSAL OF PIT REFUSE. Are you short of Men ? Are you short of Wagons ? AN AERIAL ROPEWAY Will overcome these difficulties. Send us your enquiries. ENGINEERING Co. Ltd., LONDON, E.C. 3. SELF=LUBRICATING STEAM ENGINES Simple, Compound & Triple Expansion Types FOR COLLIERIES, MINES, VENTILATING FANS, PUMPS, & ALL POWER & LIGHTING PURPOSES The Beiliss Engine, with its automatic Forced Lub- rication and Absence of Wear, is specially adapted for operating Mine Ven- tilating Fans, and can be depended upon to run con- tinuously day and night for many months without the necessity of stopping for adjustment. It is not un- usual for these engines to run for one, two or even three years without ad- justment. Beiliss Triple Expansion Engine, coupled to “Sirocco” Fan. 154 in. dia. Capacity 600,000 c.f. Air per min. Speed 170/200 r.p.m. Non-Stop Runs of 7, 9, and 14 months have been recorded. Being vertical and self-contained, the Engines are not affected by settlement of foundation. The working parts being enclosed in a dust-proof case are not liable to be affected by the dust which is often largely in evidence at a Colliery. Write for our “ R ” Pamphlet, giving further points of ad- vantage. BELLISS & MORCOM LIMITED, Telegrams: RTRMTNir L4 A M London Office : “BELLISS, BIRMINGHAM.” X8, VICTORIA STREET, S.W. 1.