January 10, 1913. THE COLLIERY GUARDIAN. 101 BIRAM DAV IS PATENT N“ 1-7015 Two New Types of Anemometers embracing many and important advantages. Patent No. 17075 M DAVIS-BIRAM 111 ANEMOMETER. Davis' Improved Water Gauge. JOHN (Derby) 20 |30 IL !G ilio )00 90 8D 70 60' * 40' J feetpeJsecdnd N0l|2 4 I izC ,ocij t ?0' 80; I 70, i 60- ! ; 40 i DAVIS-LYALL AIR SPEED INDICATOR. Hygrometers Water-gauges Barometers, Thermometers Send for Catalogue 41 AH. DAVIS & LTD., WITH SHirJf ER CLOSED ts/J MULTIPLY ijiffiflTiQKSBY 2 Patent No. 16215 No. 51. Hygro- meter. Portable form. SON ALL SAINTS WORKS, DERBY; London—17, Victoria St. Westminster, S.W. GUTTER PICKS, DRILL STEELS AND TWIST DRILL STEELS READY FOR USE IN ALL MAKES OF MACHINES. rw Buy from the Makers: THE HARDY PATENT PICK CO. L° SHEFFIELD. Purchasers’ Guide to Advertisers’ Specialities—(continued). Forges Alldays & Onions Pneumatic Engineering Co. Ld., Birmingham Hardy Patent Pick Co. Ld., Sheffield Forgings Bagnall, W. G., Ld., Stafford Chorley Bailway Wagon Co. Ld., Chorley Hardy Patent Pick Co. Ld., Sheffield Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Benton ,B. M., and Co., Midland Works, Sheffield Uskside Engineering Co. Ld., Newport Walker Bros. (Wigan) Ld., Wigan Wright, Joseph, and Co,, Tipton Yorkshire Engine Co. Ld. Sheffield Friction Clutches Bever, Dorling, and Co. Ld., Bradford, Yorks. Bridge, David, & Co. Ld., Castleton, Manchestei Daglish, Robert, and Co. Ld., St. Helens, Lancs. Fraser & Chalmers Ld., 3, London Wall Bldgs., E.C. Longbotham, B. H., and Co. Ld., Wakefield Norton’s (Tividale) Ld., Tipton Beavell and Co. Ld., Ipswich Beddaway, F„ & Co. Ld., Pendleton, Manchester Theedam, E. C., Ld., Dudley Tickle Brothers, Vulcan Ironworks, Wigan Walker Brothers (Wigan) Ld„ Wigan Wood, John, & Sons Ld., Brook Foundry, Wigan Wright, Joseph, and Co., Tipton Friction Surfaces Frood, Herbert, Co. Ld., Chapel-en-le-Frith Fuel Economisers Fell, U. A., Dronfirld, near Sheffield Pillatt and Co., Stapleford, Nottingham Stringer, John, and Son, Dept. 11, Blackburn Yorkshire Boiler Co. Ld. Bradford Fuel Machinery _ T , Middleton, Bobert, Sheepscar Foundry, Leeds Uskside Engineering Co. Ld., Newport Yeadon, Son and Co., Albion-place, Leeds Furnaces _ . „ Alldays & Onions Pneumatic Engineering Co. Ld,, Birmingham Bennis, Ed., and Co. Ld., Little Hulton, Bolton Leech. Goodall & Co., Hunslet, Leeds Pillatt and Co. Ld., Stapleford, Nottingham Tickle Brothers, Vulcan Ironworks, Wigan Furnace Ironwork . „ T a Alldays & Onions Pneumatic Engineer! ng Co, Ld., Birmingham Heenan & Froude Ld., Worcester and Manchester Leech, Goodall & Co., Hunslet. Leeds Tickle Brothers, Vulcan Ironworks, Wigan Wood, John, and Sons Ld., Wigan Fuse Igniters ^'^ttonPowle'rCo. Ld.,32, Queen Victoria-st., E.C. Curtis’s and Harvey Ld., Cannon-st. House, E.C. Davis, John, and Son (Derby) Ld., Derby Electric Blasting Apparatus Co. Ld., Cinderford Nobel’s Explosives Co. Ld., Glasgow Ganister Bricks Gas Compressors „ a Bell ss and Morcom Ld., Birmingham Gas Engines _ , _ x w x x British Oxygen Co.Ld., Elverton-st.. Westminster British Westingheuse E ectric and Manufacturing Co. Ld., Manchester Glover, M., and Co., Holbeck-lane. Leeds Bailway and General Engineering Co. Ld., Notts Bobey and Co. Ld., Lincoln Tangyes Ld., Cornwall Works, Birmingham Gas Exhausters Alldays & Onions Pneumatic Engineering Co. Ld., Birminsrbam Koppers’ (The) Coke Oven and Bye-Product Co., Sheffield Gas Plant British Westinghouse Electric and Manufacturing Co. Ld., Manchester Koppers’ (The) Coke Oven and Bye-Product Co., Sheffield Mather and Platt Ld., Manchester Gas Prooucers Appleby, E. G., and Co.v 10, Victoria-street, Westminster Gas-Testing Lamps , _ , T Ackroyd and Best Ld., Morley, Leeds Davis, John, and Son (Derby) Ld., Derby < Gas Tubes ano Fittings Lewis, Edwin, and Sons, Wolverhampton Stewarts & Lloyds Ld., Birmingham & Glasgow Wellington Tube Works Ld., Great Bridge, Tipton Gas Valves Haslam and Schontheil Ld., Bristol Gauge Glasses Davis, E., 2, Aire-street, Leeds Davis, John, and Son (Derby) Ld., Derby Guilbert-Martin, 9, Edmund-pl„ Aldersgate, E.C. Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Theedam, E. C., Ld., Dudley Treasure, J. B., & Co., 8 & 12, Vauxhall-rd.. L’pool Gauge Glass Protectors Davis, E., 2, Aire-street, Leeds Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Theedam, E. C., Ld., Dudley Gauges Davis, E„ 2, Aire-street, Leeds Green and Boulding Ld., 28, New Bridge-st,, E.C, Hopkinson, J., and Co. Ld., Huddersfield Yorkshire Boiler Co. Ld., Bradford Gear (Special for Motor Lorries Cars &o.) Brown, David, & Sons (Hudd.) Ld.» Huddersfield Gearing British Insulated and Helsby Cables Ld., Prescot Brown, David, & Sons (Hudd.) Ld., Huddersfield Bumsted and Chandler Ld., Hednesford, Staffs. Citroen, Andre, and Co., 27, Queen Victoria Street Daglish, Bobert, and Co. Ld., St. Helens, Lancs. Jardine, John, Deering-street, Nottingham Lancaster and Tonge Ld., Pendleton, Manchester Leech, Goodall & Co., Hunslet, Leeds Th.O’, newill and Warham Ld., Burton-on-Trent Walker Brothers (Wigan) Ld., Wigan Wood. John, and Son Ld., Brook Foundry, Wigan Girders (Iron and Steel) Daglish, Bobt., and Co. Ld., St. Helens, Lancs. Firth, Wm., Ld., Water-lane, Leeds Heenar and Froude Ld., Manchester Henderson and Glass, Liverpool Isca Foundry Co*. Newport, Mon. Benton, B. M., and Co., Midland Works, Sheffield Scott, Walter, Ld., Leeds Steel Works, Leeds Shelton Iron, Steel and Coal Co. Ld., Stoke-on- Trent, Staffs, Ward. Thos. W..Limited. Albin* Works. Sheffield Glass Manufacturers (Tube Rods Enamels) Guilbert.-Martin. 9, Edmund-pl., Aldersgate, E.C. Governors (Engine) Evans, Joseph, and Sons (Wolverhampton) Ld., W olverhampton Mather and Platt Ld., Manchester Daglisb, Bobt., and Co. Ld., St. Helens, Lancs. Tangyes Ld., Cornwall Works, Birmingham Governors (Hydraulic) Grease Chorley Bailway Wagon Co. Ld., Chorley, Lanes. Gaunt and Hickman, Wolverhampton Trier Bros., Caxton House, Westminster Theedam, E. C., Ld., Dudley Thomas and Bishop, 119-125, Finsbury Pav., E.C. Wakefield, C. C., and Co., 27, Cannon-street. E.C. Grinding Machinery Bridge, David, A Co. Ld., Castleton, Manchester Hardy Patent Pick Co. Ld., Sheffield Grindstones Gunpowder Curtis’s and Harvey Ld., Cannon st. House, E.C. G Cort, Arthur,^A Co. 303}, Camberwell-rd., London Harness Hauling Drums Bever, Dorling and Co. Ld., Bradford Bridge, David, & Co. Ld., Castleton, Manchester Bumsted and Chandler Ld., Hednesford, Staffs. Daglish, Bobert, and Co. Ld., St. Helens, Lancs. Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Heenan & Froude Ld., Worcester and Manchester Norton’s (Tividale) Ld.. Tipton Leech, Goodall & Co., Hunslet, Leeds Phillips, C. D., Newport, Mon. Bobey and Co. Ld., Lincoln Spencer and Co. Ld., Melksham, Wilts Sutcliffe, B., Horbury, near Wakefield Thomewill and Warham Ld., Burton-on-Trent Tickle Brothers, Vulcan Ironworks, Wigan Walker Bros. (Wigan) Ld., Wigan Wood, John, & Sons Ld», Brook Foundry, Wigan Wootton Bros. Ld., Coalville, Leicester Wright, Joseph, and Co., Tipton Youngs, Byland-street Works, Birmingham Headgears Daglish, Bobt., and Co. Ld., St. Helens, Lancs. Heenan A Froude Ld., Worcester and Manchester Leech, Goodall & Co., Hunslet, Leeds Norton’s (Tividale) Ld., Tipton Bobey and Co. Ld., Lincoln Spencer and Co. Ld., Melksham, Wilts Tickle Brothers, Vulcan Ironworks, Wigan Wright, Joseph, ana Co., Tipton Heading Machines Davis, John, and Son (Derby) Ld., Derby Hardy Patent Pick Co. Ld., Sheffield International Channelling Machines Ld., Sheffield HEAP8TEAD8 Coulson, M., A Co. Ld., Spennymoor, Co. Durham Hardy Patent Pick Co. Ld., Sheffield Head, Wrightson and Co. Ld., Stockton-on-Tees Heenan and Froude Ld., Worcester Leech, Goodall A Co., Hunslet, Leeds Longbotham, B. H., and Co. Ld., Wakefield Norton’s (Tividale) Ld., Tipton Plowright Bros. La., Chesterfield Spencer and Co. Ld., Melksham, Wilts Tickle Brothers. Vulcan Ironworks, Wigan Walker Bros. (Wigan) Ld., Wigan Wood, John, A Sons Ld.. Brook Foundry, Wigai Wright, Joseph, and Co., Tipton Yorkshire Hennebique Contracting Co. Ld., Leer s Hoists Alldays A Onions Pneumatic Engineering Co. Ld. Birmingham Bleichert, a-., and Co., 99-100, Palmerston House, Bishqpsgate-street Within, 60, E.C. Daglish, Bobert, and Co. Ld., St. Helens, Lanes. Fraser A Chalmers Ld., 3, London Wall Bldgs., E.C. Hardy Patent Pick Co. Ld.* Sheffield Heenan and Froude Ld., Worcester Leech, Goodall & Co., Hunslet, Leeds Mather and Platt Ld., Manchester Mavor and Coulson Ld., 47, Broad-street, Glasgow Beavell and Co. Ld., Ipswich Spencer and Co. Ld., Melksham, Wilts Tickle Brothers, Vulcan Ironworks, Wigan Wood, John A Sons Ld., Brook Foundry, Wigan Wright, Joseph, and Co., Tipton Youngs, Bvland-street Works, Birmingham Hooks or Links (Safety) Heenan and Froude Ld., Worcester Humble, Stephen, 9, Victoria-street, S.W. Lowmoor Co. Ld.,Lowmoor Ironworks, Bradfora Ormerod, Edward, Atherton, near Manchester Walker, Thos., and Son Ld., Birmingham Wood, John, A Sons Ld., Brook Foundry, Wigan Wright, Joseph, and Co., Tipton, Staffs. Hoppers Baker, John, and Son, Bilston, Staffs Coulson, M., and Co. Ld., Spennymoor Harvey, G. A., & Co., Woolwich-rd., London, S.E Hardy Patent Pick Co. Ld., Sheffield Heenan and Froude Ld., Worcester Leech, Goodall A Co., Hunslet, Leeds Hoppe as—con tinned Simon-Carves Ld.. 20. Mount-street, Manchester Spencer and Co. Ld., Melksham, Wilts Tickle Brothers, Vulcan Ironworks, Wigan Theedam, E. C., Ld., Dudley Wright, Joseph, and Co., Tipton Yorkshire Hennebique Contracting Co. Ld., Leeds Hose Cort, Arthur, A Co., 303}, Camberwell-rd., London Hardy Patent Pick Co. Ld., Sheffield Mining Engineering Co. Ld., Sheffield Northern Bubber Co., The Wicker, Sheffield Norton’s (Tividale) Ld., Tipton Beddaway, F., A Co. Ld., Pendleton, Manchester Willcox. W. H., A Co. Ld., 23, Southwark-st., S.E. Hose (Coal-Cutter) Northern Bubber Co., Tee Wicker, Sheffield Humidifiers Heenan A Froude Ld., Worcester and Manchester Mather and Platt Ld., Manchester Hydro Electric Plants British Westinghouse Electric and Manufacturing Co. Ld„ Manchester Hydraulic Machinery Daglish, Bobert, and Co. Ld., St. Helens, Lancs, Hathorn, Davey and Co. Ld.. Leeds Leech, Goodall A Co., Hunslet, Leeds Mather and Platt Ld., Manchester Middleton, Bobert, Sheepscar Foundry, Leeds Pearn, Frank, A Co., Ld., West Gorton, Manchester Pulsometer Engineering Co. Ld., Beading Tangyes Ld., Cornwall Works, Birmingham Wood, John, A Sons Ld., Brook Foundry, Wigan Youngs, Byland-street Works, Birmingham Hydraulic Reduoinq Valves Auld, D., and Sons, Whitevaie Foundry, Glasgow Hygrometers Davis, John, and Son (Derby) Ld., Derby Incline Rollers Bagnall, W. G., Ld., Stafford Leech, Goodall A Co., Hunslet, Leeds Lowmoor Co. Ld., Lowmoor Ironworks, Bradford INDIARUBBER GOODS Chorley Bailway Wagon Co. Ld., Chorley, Lancs. Cort, Arthur, A Co., 303}. Camberwell-rd., London Northern Bubber Co., The Wiekec, Sheffield Beddaway, F„ A Co. Ld., Pendleton, Manchester Indicators (Steam Engine) Davis, E., 2, Aire-street, Leeds Davis, John, and Son (Derby) Ld., Derby Green and Boulding Ld., 28, New Bridge-st., E.C. Yorkshire Boiler Co. Ld., Bradford, Yorks Induoeo Draught Fahs Alldays A Onions Pneumatic Engineerirg Co. < Birmingham Bumsted and Chandler Ld., Hednesford, Staffs. Davidson and Co. Ld., Belfast Heenan A Froude Ld., Worcester and Manchester Yorkshire Boiler Co. Ld., Bradford, Yorks INJECTORS AND EJEOTORS n , Bailey, W. H„ and Co. Ld., Salford, Manchester Green A Boulding Ld., 28, New Bridge-st., E.C. Hopkinson, J., and Co. Ld., Huddersfield Pulsometer Engineering Co. Ld., Beading Willcox, W. H., A Co. Ld., Southwark-st., S.E. Instruction (Postal) o v Thomas, Wm., Cambrian Mining School, Forth Southern, T. A., Universal Mining School, Cardiff Instruments Davis, John, and Son (Derby) Ld., Derby Thornton, A. G., Ld., King-st. West, Manchester Iron and Brass Founders Bridge, David, A Co. Ld., Castleton, Manchester British Wagon Co. Ld., Botherham Chorley Bailway Wagon Co Ld., Chorley, Lancs Daglish, Bobt., and Co. Ld., St. Helens, Lancs. Jardine, John, Deering-street, Nottingham Lowmoor Co. JLid., Lowmoor Ironworks, Bradford Bailwav A General Engineering Co. Ld., Notts Boyles La., Irlam, Manchester Spencer and Co. Ld., Melksham, Wilts Tickle Brothers, Vulcan Ironworks, Wigan Wood, John, and Sons Ld., Wigan