March 13, 1914. THE COLLIERY GUARDIAN. 603 DUST! DUST!! is c LEEDS. We make a Speciality of HEYWOOD & BRIDGE’S PATENT FRICTION CLUTCHES and HAULING INSTALLATIONS. Dust Extractor can any Chaff Cutter. “PORTEUS” PATENT DUST EXTRACTORS. “PORTEUS” PATENT PROVENDER MIXERS. “PORTEUS” PATENT SIFTERS. Plants can be seen working in London and Provinces. Address— ——— GEORGE PORTEUS, Leeds Bridge Works, LEEDS. Telephone No. 3241 (2 lines). Telegraphic Address—Elevator, Leeds.” (Electrical and Mechanical, Vertical and Horizontal.) Write for New List No. 60. Pickering ’’ Governor. Speciality :—REPAIRS. HOLLINCDRAKE & SON, STOCKPORT. ELECTRICALLY DRIVEN MAIN AND TAIL WINDING GEAR. Drums combined with our Heywood & Bridge’s Patent Friction Clutches. Send for Catalogue-Free. Patentees & Sole Makers, DAVID BRIDGE & GO. LD., Haulage Works, CASTLETON, MANCHESTER. “ The Shipping World.” Weekly. illustrated. Price 6d. Annual Subscription {Post Free)! United Kingdom, 21s. Foreign Countries, 28s PRINCIPAL FEATURES— CURRENT EVENTS, by the Editor. SHIPPING in PARLIAMENT, by Special Representative SHIPPING and the LAW. SHIP SALES and CONTRACTS. ILLUSTRATED ARTICLES. TECHNICAL ARTICLES. ARTICLES on TRADE, COMMERCE, SUBVENTIONS and all SHIPPING QUESTIONS. NEPTUNE’S MAIL, with interesting News & Comments NAVAL and ENGINEERING NOTES. REPORTS from the SHIPPING CENTRES. REPORTS on FREIGHTS and MARINE INSURANCE. TRADE and FINANCE. LAUNCHES and TRIAL TRIPS, CORRESPONDENCE. PRICES CURRENT. REVIEWS of TECHNICAL BOOKS. The Largest Foreign Circulation of its Glass. The Largest Home Circulation of its Glass Offices of the “Shipping World Ltd.” Effingham House, Arundel Street, Strand, London, W.C. Telegrams and Cables—“Shipping World, London.” Telephone—2381 Gerrard. CAMBRIAN LAMP fitted with Magnetic Lock, Flectric Ignition and Patent Automatic Lock on Bonnet. E. THOMAS & WILLIAMS Limited. Telephone—No. 7 P.O. Estd. i860. Tel. Address—“’Lamps, Aberdare.” OUR IMPROVED MINER’S SAFETY LAMP. The Strongest, most perfect and up-to-date Lamp in the Market. The lighting arrangement is easy and certain in its operation. Our Magnetic Lock is absolutely unpickable, having stood the test of many years' use at the largest Collieries in the country. Our method of re-lighting underground by means of Bowie's Patent Self Contained Re-lighter is proved to be safe and effective. Complete Installation of Lamps and Accessories on the Hire system. Lamp Rooms fitted on approved modern lines. Makers of the Cunningham-Cadman Cas Detecting Device. CATALOGUES AND ESTIMATES FREE. Cambrian Lamp Works, Aberdare, S. Wales. The PREMIER Screen in the WORLD IS NORTON’S PATENT HORIZONTAL MAIN SCREEN. NORTON’S PATENT HORIZONTAL MAIN SCREEN AND COMBINED PICKING CONVEYOR, fitted with our Patent Air Cushioning Cylinders The Screen illustrated is 5 ft. 6 in. wide having 4 decks, and will deal with 125 tons of coal per hour separating into 4 sizes, and passing the large coal without any fall to the Picking Conveyor. Three of the above screens are erecte 1 in one plant which contains 7 other Norton’s Patent Horizontal Screening Conveyors. REQUIRES NO SPECIAL FOUNDATION. Will work continuously WITHOUT BOLTING DOWN. Will Screen more efficiently than any other screen. Nearly 150 Screens now at work. For P E RFECTsizing & loading USE PULSATING CONVEYORS AND PULSATING LOADING JIBS (NORTON’S PATENTS). We are constructing and erecting more than one complete Screening Plant every month. Capacities 2,000 to 5,000 tons per day, NORTONS (TIVIDALE) LTD., HECLA Works, Tipton, England.