November 8, 1918. THE COLLIERY GUARDIAN. [supplement PAGE I.] 985 Save Money - Save Coal - Save Steam By adopting FORREST’S PATENT AUTOMATIC Cylinder DRAIN COCKS on your Compound, Winding, Hauling, and all your Stationary Engines, Steam Winches, &c. (Thousands in use), now fixed on most new Engines turned out by leading Engineers. The Safest Automati j Dram Cock ever fixed on Com- pound Condensing Engines, most positive in action. Makers of High-class Gunmetal Gland Taps. Wheel Valves, &c, Founded 1 8 9 9. WATER AND WATER ENGINEERING. British Manufacture. Best Quality at Lowest Prices. Every description either separate or in cases. ^PE(IAL 12 in. CARDBOARD PROTRACTOR, reading to at 3s., pottage Sf packing Is. ILLU8TBATKD CATALOG UK ON APPLICATION. WU MARI IM ft Mathematical Drawing and Surveying ■ ill liMriMtlUj Instrument Manufacturer, 47, Finsbury Pavement, London, E.C. 2 Established 1851. Factory—UPPER CLAPTON, N.E. For Prices, Particulars and Testimonials, apply Sole Makers, APPLETON & HOWARD, ST. HELENS, LANCS Contractors to the War Office Price 6d. monthly. Annual Subscription, 7/6 post free (payable in advance). Offices— 30 & 31, Fubnival Street, Holbokn, London, E.C. 4 THE WESTOOL ELECTRIC DRILL, for Wood, Iron and Steel. Sole al alters- Standard sizes. Capacity in Steel. No. 1 t® in. No. 2 I in. No. 3 H in. Write for descriptive Leaflet. Entirely British made. THE WESTMINSTER TOOL & ELECTRIC CO. Suffolk House, Laurence Pountney Hill, Cannon St., London, E.C. 4. Telegrams—“ Westolelco-Cannon, London. Structural Steelwork Steel Framed Buildings, Roof Principals. BRIDGES, GANTRYS, RUNWAYS, BUNKERS, HOPPERS, PITHEAD FRAMING. Hill & Smith Ltd. Brierley Hill, Staffs. Willcox’s Oils OILS DELIVERIES ACCORDING TO M.O.M. CLASSIFICATIONS, PERMITS, &c. Super-Qualities for all Colliery, Lighting and Power Plants. COLLIERY ENGINEERS’ STORES of every description. Illustrated Lists will be gladly sent upon receipt of application. Semet-Solvay Coke Ovens SECTION OF OVEN Strongest in Design. Separate sets of flues to each oven. Very low Maintenance Cost. With -‘DIRECT” AMMONIA RECOVERY PLANT, Complete Benzol and Toluol Plant and Tar Distillation Plant. SHOWING SOLID CONSTRUCTION. THE COKE OVEN CONSTRUCTION CO. L! Howard Chambers, 155, Norfolk Street, SHEFFIELD.