728 [supplement PAGE VIII.] THE COLLIERY GUARDIAN. October. 4, 1918. COLLIERY BOILERS A SPECIALITY Telephone No. 81. ARNOLD’S PATENT Established 185 6. BULBOUS FLUE. One of these Boilers with Arnold’s Barrel Flues inserted has worked at Doncaster Corporation Electric Light and Power Station at 200 lbs. working pressure for 17 years without repairs. Also TOLUOL PLANTS, BYE-PRODUCT PLANTS and CHEMICAL PLANTS erected and BARNSLEY HOPKINSON-WEST PATENT .. 1 - \ / Roo< of Flange If* Radius - i Expansion Safety Flue. maintained. WM. ARNOLD & CO f.PRY0fi&5O^m?Li> CHECKS ] ’ ] BRASS I \ BRASS I LlabelsJl Founded 1899. WATER AND WATER ENGINEERING. Price 6d. monthly. Annual Subscription, 7s. 6d. post free (payable in advance). Offices—30 & 31, Furnival Street, Holborn, London, E.C.4 GEORGE Rock and Stone Drilling Machines: BURNSIDE, Burnside’s Safety Boring Apparatus. Used most successfully in tapping old Mine Workings. /or Catalogue. Drills to any Size Also Bye Guards for Pit Ponies. Boring Tool Works, Shiney Row, Fencehouses, CO. DURHAM. YORKSHIRE ENGINE C? LD Contractors to the Admiralty, War Office, India Office, &c., and Colonial and Foreign Governments and Railways. HEAD OFFICE & WORKS : SHEFFIELD, ENGLAND. London Office : 34, Caxton House, Westminster, S.W. 1. BUILDERS OF STEAM, ELECTRIC & COMPRESSED AIR LOCOMOTIVES for any Gauge—of any Weight. COAL CUTTING MACHINES <& HAULAGE ENGINES OF ALL TYPES, FORGINGS IN IRON & STEEL—G.M. & PHOSPHOR RRONZE CASTINGS. MACHINE WORK OF EVERY DESCRIPTION. Telegraphic Address ENGINE, SHEFFIELD. The PREMIER Screen in the WORLD 1 is Norton’s Patent Horizontal Main Screen. ■ ■ s « : : : : (MR 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. 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&loading USE PULSATING CONVEYORS AND PULSATING LOADING JIBS (NORTON’S PATENTS). NORTONS (TIVIDALE) Ltd HECLA Works, Tipton, England.