February 16, 1917. THE COLLIERY GUARDIAN 359 The PREMIER Screen in the WORLD is Norton’s Patent Horizontal Main Screen TWS;! REQUIRES NO SPECIAL FOUNDATION. Will work continuously WITHOUT BOLTING DOWN. Will Screen more efficiently than any other screen. Over 150 Screens now at work. For PERFECTsizing&loadirg USE PULSATING CONVEYORS AND PULSATING LOADING JIBS (NORTON’S PATENTS) 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 four decks, and will deal with 125 tons of coal per hour separated into four sizes, and passing the large coal without any fall to the Picking Conveyor. NORTONS (TIVIDALE) Ltd., HECLA Works, Tipton, England. EDWIN LEWIS & SONS. Original Makers of “Acme” & “Williams” Loose Flanged Joints for Mining Work. TUBES OF ANY SIZE For Compressed Air, Water, or Steam. vizor x <= f Patent Iron Tube Works, Monmore Green. (.Britannia Tube Works, Ettingshall. WOLVERHAMPTON. Buyers will note that the joint illustrated is an improvement on the “ Williams ” joint, as it does without the internal ferrule. Telegrams—“ Lewis, Wolverhampton.” Telephone—Nos. 15 6 180 Wolverhampton. LONDON ADDRESS—143, Cannon Street, E.C. LIVERPOOL WAREHOUSE— 58, South John St. Purchasers* Guide to Advertisers* Specialities— (continued). Sleepers ( Iron and steel) -n™m« mfer et en acier Allen, W. G., and Sons (Tipton) Ld., Tipton Baird, J. W., and Co., West Hartlepool Bute Works Supply Co. Ld., Cardiff Renton, B. M., and Co., Midland Works, Sheffield SMITH WORK—Outrages de forge Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Wright’s Forge and Engineering Co. Ld., Tipton SMOKE Helmets—Casques protecteurs contre fumtes Mining Engineering Co. Ld., Sheffield Siebe, Gorman and Co. Ld., Westminster, S.E. Spanners Fastnut Ld., 115, Newgate-street, London Speed-Reducing Gears—Engrenages d reduction de vitesse Wood, John, and Sons Ld., Wigan Sphincter Crip Armoured Hose—Tuyaux omit Beddaway, F., A Co. Ld., Pendleton, Manchester Springs—Resorts Lancaster and Tonge Ld., Pendleton, Manchester Wigan Wagon Co. Ld., Springs Branch, Wigan Stampings—-E’tamjwes Chorley Railway Wagon Co. Ld., Chorley Hardy Patent Pick Co. Ld., Sheffield Head, Wrightson and Co. Ld., Stockton-on-Tees Lowmoor Co. Ld., Lowmoor Ironworks, Bradford STEAM Experts—Spicialistes en tout ce qui concerne la vapeur Fell, C. A., Dronfield, near Sheffield Princeps A Co., Sheffield Roy les Ld., Irlam, Manchester STEAM FITTINGS—Garnitures de chaudieres Baldwin, James, and Co., Keighley, Yorks Blakeborough. J., and Sons, Brighouse, Yorks. Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Bussell, John, and Co. Ld., Alma Works, Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Stewarts and Lloyds Ld., Birmingham A Glasgow Steam Mains and Pipe Installations — Conduites de vapeur Stewarts and Lloyds Ld., Birmingham A Glasgow Steam - Saving Appliances — >onom»s«ur« d. vapeur Boyles Ld., Irlam, Manchester STEAM Traps—Purgeurs de vapeur Auld, D., and Sons, Whitevale Foundry, Glasgow Baldwin, James, and Co., Keighley, Yorks. Hopkinson, J., and Co. Ld., Huddersfield Lancaster & Tonge Ld., Pendleton, Manchester Princeps A Co., Sheffield Boyles Ld., Irlam, Manchester Stewarts and Lloyds Ld., Birmingham & Glasgow United States Metallic Packing Co. Ld., Bradford Wright’s Forge and Engineering Co. Ld., Tipton STEAM WAGONS— Poitures autos d vapeur Mann’s Patent Steam Cart and Wagon Co. Ld., Hunslet, Leeds Steam Winches—Treuiis d vapeur Clarke, Chapman A Co. Ld., Gateshead-on-Tyne Phillips, C. D., Newport, Mon. Wood, John, and Sons Ld., Wigan STEEL—Fabricants d’acier Cooke, William, and Co. Ld., Tinsley, Sheffield Cradock, George, and Co. Ld., Wakefield Haden and Co., Patricroft Hadfields Ltd., Hecla & East Hecla W’ks, Sheffield Hardy Patent Pick Co. Ld., Sheffield Hodgson, E. W., and Co., Sheffield Howell & Co. Ld., Brook Steel Works, Sheffield Latch and Batchelor Ld., Hay Mills, near B’ham Mining Engineering Co. Ld., Sheffield Shelton Iron, Steel A Coal Co. Ld., Stoke-on-Trent Stead, J., and Co. Ld., Manor Works, Sheffield Stewarts and Lloyds Ld., Birmingham A Glasgow Thompson and Co., Wigan STEEL Blooms, Billets—Loupes et lingots en acier Cradock, George, and Co. Ld., Wakefield Scott, Walter, Ld., Leeds Steel Works, Leeds STEEL Flats AND Rounds—Barres et ronds en acier Scott, Walter, Ld., Leeds Steel Works, Leeds Stead, J., and Co. Ld., Manor Works, Sheffield STEEL TiNBARS—Bidons d toles de fer-blanc Scott, Walter, Ld., Leeds Steel Works, Leeds Stencil Plates, Steel Stamps, &c — Patrons poinqons, &c. Lawson, John, and Sons, 26, Carver-lane, Sheffield Pryor, Ed., and Son, 112/116, Bockingham-street, Sheffield Stockbrokers. Chapman, Wm., A Co., Wheeler Gate, Nottingham Stokers (Machine). Bennis, Ed., and Co. Ld., Little Hulton, Bolton Stone Breakers—Casse-pierres Hadfields Ltd., Hecla A East Hecla W’ks. Sheffield Hardy Patent Pick Co. Ld., Sheffield Johnson, Wm., A Sons (Leeds) Ld., Armley, Leeds Stonedust Grinding Plant—Broyeurs (poussiere de schistes) Bradley Pulverizer Co., 37, Walbrook, E.C. Fletcher, George, and Co. Ld., Litchurch, Derby “ Jeffrey”—Hugh Wood A Co. Ld., N’castle-on-T. Patent Lightning Crusher Co. Ld., 14a, Bose; bery-avenue, E.C. Johnson, Wm., A Sons (Leeds) Ld., Armley,Leeds Scholefield, Rd., Burley Vale, Leeds STRUCTURAL Steelwork—Constructions en acier Goodall, Clayton and Co. Ld.. Hunslet, Leeds Hardy Patent Pick Co. Ld., Sheffield Scott, Walter, Ld., Leeds Steelworks, Leeds Wright’s Forge and Engineering Co. Ld., Tipton Sulphate of Ammohia Plant — Apparent