September 6, 1918. THE COLLIERY GUARDIAN. 479 INCREASE YOUR OUTPUT. WE CAN GIVE YOU THE BEST SERVICE AT THE LOWEST COST. i NO LEAKAGE OF ACID. BRITISH PRODUCTIONS ENTIRELY. ACCUMULATORS for all purposes. - 'CZW;— ' ?flp.,i I Firemen’s Emergency Pocket Lamp. Size Si in. by 4 in. Telegrams— “ PELECTLYTO, BOCHURCH, LONDON.” Telephone— 119 STRATFORD. Miners’ Electric Lamp. Weight 4} lb. Pearson’s Electric Miners’ Lamp C° L? Victoria Works, Marshgate Lane, Stratford, LONDON, E. 15. Mullings’ Patent Controller and Steam Brake. The most complete and reliable apparatus — for the — Automatic Control of Winding Engines. References to some of the most important Collieries in the Kingdom. Full Particulars from SOLE MAKERS : Worsley IWesnes Ironworks Ld>? Telegrams— I A Telephone— “ENGINES, WIGAN.” No. 46 WIGAN. NATIONAL IMPORTANCE SAVE FUEL OIMPLET Fit up a CIRCULATOR CIRCULATOR. VII J J Can be installed in a few hours without interfering with existing fittings. Adopted by Collieries, Iron & Steel Works, and all large steam users. MORE POWER THE LONDON SIMPLET ENGINEERING CO., Ltd. BOLTON HOUSE, CULLUM STREET, FENCHURCH STREET, E.C. 3 Telephone : Avenue 872. LABORATORY—20 CULLUM STREET, E.C.3. Telephone: Central 11029. Telegrams : “ Lonplet, Fen, London.” WELDLESS STEEL TUBES AND CONSTRUCTIONS. British Manufacture throughout. High-class Quality. Excellent Finish. Accuracy. The material for your requirements may be in stock, J. E. SLACK, 60, QUEEN VICTORIA STREET, IONOON, E.C. Depot—Mi II wall. Telegrams—“ Jeslaker, Cannon, London.” HAMMERED CAST IRON Premier Works, PISTON RINGS Don Road SHEFFIELD (by the Davy-Robertson Process). All sizes from 2fin. to 72 in. In our Special Piston Ring Iron. THE STANDARD PISTON RING & ENGINEERING CO. LTD., QUICK DELIVERY. LOW PRICES. TttbST -