December 4, 1914. THE COLLIERY GUARDIAN. 1193 Ryland St. Works, YOUNGS. BIRMINGHAM. WOOD AND IRON. — ASK FOR LIST No. 28. - WELDED TUBES up to 36 in. diameter, for ------- MINING, GAS AND WATER. --------------------- EDWIN LEWIS & SON, Wolverhampton. WORKS : Telegrams—“Lewis, Wolverhampton.” Patent Iron Tube Works, Monmore Green. London Address—143, Cannon Street, E.C. Telephone—No. 15 Wolverhampton. Britannia Tube Works, Ettingshall. Liverpool Warehouse—58. South John St. .LOWER 12 RAISE. 5 Slower .steadily. RAISE .STOP, —-V’ a 9\ k 8> “ NON-CUMULATIVE ” Winding Signals complying with Rule 9 5, General Regulations, 1913. DAVIS’S Self=Contained SOLENOID BELL with DIAL INDICATOR. Patent No. 7638. and Patents Nos. 7241 and 17607 applied for. Simple, Efficient, Inexpensive. SEND FOR LIST 41 V. JOHN DAVIS & SON (Derby) LTD., ALL SAINTS WORKS, DERBY; and 17, Victoria St., Westminster, London, S.W. Telegrams —“ Davis, Derby.” Telephone—240 Derby. Steel Underframe Railway Car- riages, Tram ars, and Wagons of every description for Hire and Sale by Immediate or Deferred Pay- ments. Ironwork, Wheels and Axles. Wagons for Hire, capable of carrying Six, Eight and Ten Tons, part of which are con- structed specially for Shipping pur- poses. Wagons in Working Order maintained by Contract. WAGONS. Also Wagons with Oak Underframes Makers of HYDRAULIC PRESSED BOSS and other WHEELS and AXLES. PRESSED STEEL BOGIES. SECOND-HAND BALLAST WAGONS FIT FOR MAIN LINE TRAFFIC. Sole Manufacturers of Dean & Churchward’s “ E1THERSIDE BRAKE,” and Marillier’s Patent “ 1NSTANTER COUPLING.” Tine Birmingham Railway Carriage & Wagon Co. Ltd., WORKS : SMETHWICK, BIRMINGHAM. MECHANICAL ENGINEERING OF COLLIERIES. T. c. Xers Vol. L, Price 21s. net. Vol. II., Price ios 6d. net. SUPPLEMENTARY VOL.-Price ios. 6d. ne\ The Colliery Guardian Co. Ltd., 30 & 31, Furnival Street, Holborn, London, E.C. ROBURITE No. 3. HELD BEST RECORD for SAFETY for 2BC YEARS. ROBURITE IT 4 Is now BEST & SAFEST on tine New Permitted List. NEGRO POWDER No. 2 & DREADNOUGHT POWDER Also on New Permitted List. ROBURITE and AMMONAL LTD., GATHURST, near WIGAN. LONDON OFFICE:—103, CANNON STREET, LONDON, E.C. Telegraphic Addresses : “ Roburite, Cannon, London. Roburite, Gathurst. Telephone Nos.: 141 Bank. 9 Upholland.