January 5, 1917. THE COLLIERY GUARDIAN. 47 ---- THE --- Koppers’ Coke Oven Is undoubtedly the most successful Bye-Product Oven on the market. Since its introduction a little over 10 years ago there have been built 15,000 KOPPERS’ OYENS. KOPPERS’ OVENS ARE AT WORK HEATED BY PRODUCER GAS AND BLAST FURNACE GAS. Koppers1 Direct Recovery Process IS THE SIMPLEST AND MOST EFFICIENT SYSTEM OF AMMONIA RECOVERY. PLANTS ERECTED FOR THE RECOVERY OF BENZOL & TOLUOL, FOR TAR DISTILLATION & THE MANUFACTURE OF SULPHURIC ACID. “ ' --- Full particulars on application to ——————— The Koppers' Coke Oren and Bye-Product Co., 3oi,. glossop road, Sheffield. Parchasersf Guide to Advertisers’ Specialities-(oontlnued)N SLEEPERS (IRON AND STEEL) —Traverses en fer et en acier Allen, W. G., and Sons (Tipton) Ld., Tipton Baird, J. W., and Co., West Hartlepool Bute Works Supply Co. Ld., Cardiff Benton, B. M., and Co., Midland Works, Sheffield SMITH WORK—Swages de forge Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Wright’s Forge and Engineering Co. Ld., Tip ton SMOKE Helmets—Casques protecteurs centre fumtes Mining Engineering Co. Ld., Sheffield Siebe, Gorman and Co. Ld., Westminster, S.E. Spanners " Fastnut Ld., 115, Newgate-street, London Speed-Reducing Gears—Bngr&nages d reduction de vitesse Wood, John, and Sons Ld., Wigan Sphincter Crip Armoured Hose—Tuyaux arm.es Beddaway, F„ A Co. Ld., Pendleton, Manchester Springs—Reports Lancaster and Tonge Ld., Pendleton, Manchester Wigan Wagon Co. Ld., Springs Branch, Wigan Stampings-Estampages Ghorley Bailway Wagon Co. Ld., Ghorley Hardy Patent Pick Co. Ld., Sheffield Head, Wrightson and Co. Ld., Stockton-on-Tees Lowmoor Co. Ld., Lowmoor Ironworks, Bradford STEAM Experts—Specialistes en tout ce qui concerns la vapeur Fell, C. A., Dronfield, near Sheffield Princeps & Co., Sheffield Boyles 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 & Glasgow Steam Mains and Pipe Installations - Conduites de vapeur Stewarts and Lloyds Ld., Birmingham & Glasgow Steam-Saving Appliances — ficonomiseurs de vapeur Boyles Ld., Irlam, Manchester STEAM Traps—Purgeurs de vapeur Auld, D., and Sons, Whitevale Foundry, Glasgow Baldwin, James, and Co., Keighley, Yorks. Blakeborough, J., and Sons, Brighouse, Yorks. Hopkinson, J., and Co. Ld., Huddersfield Lancaster A Tonge Ld., Pendleton, Manchester Princeps & 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— Voitures 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 Phillipa, 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 Ld., Hecla Works, 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 & Coal Co. Ld., Stoke-on-Trent Stead, J., end Co. Ld., Manor Work?, Sheffield Stewarts and Lloyds Ld., Birmingham & 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 TlNBARS—Bidons d tdles defer-blanc Scott, Walter, Ld., Leeds Steel Works, Leeds Stencil Plates, Steel Stamps, &c — Patrons poingons, &c. Lawson, John, and Sons, 26, Carver-lane, Sheffield Pryor, Ed., and Son, 112/116, Bockingham-street, Sheffield Stockbrokers. Chapman, Wm.,& Co., Wheeler Gate, Nottingham Stokers (Machine). Bennis, Ed., and Co. Ld., Little Hulton, Bolton Stone Breakers—Casse-pierres Hadfields Ld., Hecla Works. Sheffield Hardy Patent Pick Co. Ld., Sheffield Johnson, Wm.,4 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 & Co. Ld., N’castle-on-T. Patent Lightning Crusher Co. Ld.,’ 14a, Bose’ bery-avenue, E.C. Johnson, Wm.,4 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 Ammonia Plant — Apparent a recuperation du sulfate d ammoniaque Copp6e Co. (Gt. Britain), Kingsway, London Koppers’ Coke Oven A Bye-Product Co., Sheffield Simon-Carves Ld., 2C, Mount-street, Manchester Sulphur Recovery Plant—Appardis d recupera- tion du souffre Coke Oven Construction Co. Ld., Sheffield Copp6e Co. (Gt. Britain) Ld., Kingsway, W.C. Dagiish, Bobt., and Co. Ld., St. Helens, Lancs. Koppers’ Coke Oven & Bye-Product Co., Sheffield Superheaters—SwcMuffeurs Clarke, Chapman and Co. Ld., Gateshead-on-Tyne Galloways La., Manchester Pulsometer Engineering Co. Ld., Beading Surplus Steam Valves (Full Bore)—Soupapes auvapeur en trop plein Auld, D., and Sons, Whitevale Foundry, Glasgow Baldwin, James, and Co., Keighley, Yorks Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester SURVEYING (Books on)—Manuel d'arpentage Thomas, Wm„ Cambrian Mining School, Forth Surveying ( Instruction ) — Enseignement (arpentage) Thomas, Wm., Cambrian Mining School Forth Surveying Instrument Makers — Appareiis d’arpentage . Davis, John, and Son (Derby) Ld., Derby Harling, W. H., 47, Finsbury Pavement, London Hay, H. E, Peninsular House, 28, Monument- street, London Stanley, W. F., A Co. Ld., 286, High Holborn, W.C. Thornton, A. G., Ld., King-st. West, Manchester SWITCH Boards—Tableaux de distribution Haslam and Stretton Ld., Cardiff Holmes, J. H., and Co., Newcastle-on-Tyne SWITCH Gear — Commutateurs eiectriques Anderson, Boyes A Co. Ld., Motherwell, Scotland British Insulated and Helsby Cables Ld., Prescot Haslam and Stretton Ld., Cardiff Holmes, J. H., and Co., Newcastle-on-Tyne TANKS -Reservoirs Dagiish, Bobert, and Co. Ld., St. Helens, Lancs. Goodall, Clayton and Co. Ld., Hunslet, Leeds Harvey, G. A., ACo.(Lndn.) Ld.,Woolwich-rd.,S.E. Head, Wrightson and Co. Ld., Stockton-on-Tees Isca Foundry Co. Ld., Newport, Mon. Theedam, E. C., Ld., Dudley Ward, Thos. W., Ld., Albion Works, Sheffield Wright’s Forge and Engineering Co. Ld., Tipton Wood, John, and Sons Ld., Wigan Tachographs and Tachometers—Tacheometres Davis, John, and Son (Derby) Ld., Derby Tar Distilling Plant—installations d distiller i« goudron Coke Oven Construction Co. Ld., Sheffield Coppde Co. (Gt. Britain) Ld., Kingsway, London Dagiish, Boot., and Co. Ld., St. Helens, Lancs. Koppers* Coke Oven A Bye-Product Jo., Sheffield Simon-Carves Ld., 20, Mount-street, Manchester TECHNICAL EDUCATION—Enseignement technologique Southern, T. A., Universal Mining School, Cardiff Thomas, Wm., Cambrian Mining School, Forth Telephones—Telephones British Insulated and Helsby Cables Ld„ Prescot Davis, John, and Son (Derby) Ld., Derby Haslam and Stretton Ld., Cardiff Timber (Colliery)—Boisages Baird, J. W„ and Co., West Hartlepool Forslind, C. A.-. and Son, West Hartlepool Jennings, C., and Co. Ld., Pennywell-rd., Bristol Osbeck and Co., Newcastle-on-Lyne Turner, E. W., A Co. Ld., Bloxwich, Staffs Time Recorders National Time Becorder Oo., 5, Blackfriars-road, London, S.E. Tools—Outus Fell, C. A., Dronfield, near Sheffield Haden and Co., Patricroft Hardy Patent Pick Co. Ld., Sheffield Howell A Co. Ld., Brook Steel Works, Sheffield Tool Steel Stead, J., and Co. Ld., Manor Works, Sheffield Towers (Cooling) Davenport Engineering Co. Ld., Harris-st., Brad- ford, Yorks Tram and Wagon Corner Plates—Comieres pour voitures Baker, John, and Son, Bilston, Staffs Ghorley Bailway Wagon Co. Ld., Ghorley, Lancs. Theedam, E.C., Ld., Dudley TRANSFORMERS (ELEOTRIOAL) — Transformateurs eiectriques British Electric Transformer Co. Ld., Hayes, Middlesex Davis, John, and Son (Derby) Ld., Derby Transport Plant—Transporters British Bopeway Engineering Co. Ld., 7, Mmcing- lane, London, E.C. Haggie, B Hood and Son, Nowcastle-on-Tyne Trommels—Trommels Barns, W., and Son, Globe Works, Holloway Johnson, Wm., A Sons (Leeds) Ld., Armley, Leede Spencer and Co. Ld., Melksham, Wilts Tubbing and Well Cylinders—Cuveiages Head, Wrightson and Co. Ld., Stockton-on-Tees Wood, John, and Sons Ld., Wigan TUB DRAWBARS—Tiges de traction pour berlines Chorley Bailway Wagon Co. Ld., Chorley, Laues Theedam, E. C., Ld., Dudley TUBE Fittings—Accessoires pour tuyauteries Blakebo’cugh, J., and So’s, Erigbouse, Yorks. Dixon, S., and Son Ld., Swinegate, Leeds Lewis, Edwin, and Sons Ld., Wolverhampton Bussell, John, and Co. Ld., Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Stewarts and Lloyds Ld., Birmingham A Glasgow TUBES (Iron AND Steel)—Tubes en er et en acier Allen, W. G., and Sons (Tipton) Ld., Tipton Dixon, S., and Son Ld., Swinegate, Leeds Howell and Co. Ld., Sheffield Lewis, Edwin, and Sons Ld., Wolverhampton Lewis, William, and Son, Bilston Bussell, John, A Co. Ld., Alma Tube Wks., Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Stewarts and Lloyds Ld„ Birmingham A Glasgow Wellington Tube Works Ld., Great Bridge, Staffs Tub Greasers and Controllers—Appareiis de graissage et de reglage pour chariots de mine Evans and Dodd, Cannock, Staffs Hadfields Ld., Hecla Works, Sheffield Neil, J. A J., A Co., 93, Hope-street, Glasgow Theedam, E. C., Ld., Dudley Tubs (Colliery)—chariots de mine Allen, A., and Son Ld., Lower Gomal, Staffs Allen, W. G., and Sons (Tipton) Ld., Tipton Butterley Co. Ld., Alfreton, Derby Cambrian Wagon Co. Ld., Cardiff Chorley Bailway Wagon Co. Ld., Chorley. Lancs. Du Croo A Brauns, 53. Victoria-st., London, S.W. Hadfields Ld., Hecla Works, Sheffield Humble, Stephen, 9, Victoria-st., London, S.W. Theedam, E. C., Ld., Dudley Wigan Wagon Co. Ld., Springs Branch, Wigan Tunnel Segments—Firoies deitunnei Head, Wrightson and Co. Ld., Stockton-on-Tees Turbines—Turbines Beiliss and Moreom Ld., Birmingham Greenwood and Batley Ld., Albion Works, Leeds Bichardsons Westgarth and Co. Ld., Hartlepool TURBINES (Exhaust)—Turbines d vapeur d’echappe- ment Beiliss and Moreom Ld., Birmingham Greenwood and Batley Ld., Albion Works, Leeds Bichardsons Westgarth and Co. Ld., Hartlepool Turbo Alternators- Turbo-alternateurs Bruce Peebles A Co. Ld., Edinburgh TURNTABLES—Plaques tournants Du Croo A Brauns, 53, Victoria-st., London, S.W Isca Foundry Co. Ld., Newport, Mon. Summerson, Thomas, and Sons Ld., Darlington Wright’s Forge and Engineering Co. Ld., Tipton Tuyeres—Tuyeres Boyles Ld., Irlam, Manchester Bussell, John, and Co. Ld., Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Stewarts and Lloyds Ld., Birmingham & Qlasgew