October 29, 1915. THERE IS A .. PLOWRIGHT BROS. LTD., Brampton Iron Works, Chesterfield. THE COLLIERY GUARDIAN. 871 CENTRIFUGAL FAN for every purpose for which a : : Fan can be used. : : Speciality— COAL SCREENING s CONVEYING '■V? ■ ■ Hand-Driven Fans for intermittent work. Made in 3 sizes. 7 ‘'W, 1 I ..V. ■**■•>.'*•'11 SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER. Davidson & Co. Ltd., Sirocco Engineering Works, BELFAST. CONSIDERABLY OVER 100 PLANTS Estimates and Designs on application. Agent for South Wales: A. LEIGHTON STEVENS, 15, Fields Road, Newport, Mon. WORK IN BRITAIN COLONIES. SUTCLIFFE’S COAL CUTTERS, DiSC & CHAIN TYPES, w pattern, for thin or thick seams, with shallow or deep cuts. Compressed Air or Electrical Drive. Coal-Face Conveyors, uMil„ capacity, constant in work, noiseless in the face and most easily moved forward. Roadway Conveyors, whlcharem„rt freely from the face to admit ripping In the gateway. to keep a constant supply of tubs between the engine plane and coal face with instantaneous extension of endless rope. for conveyors of all kinds. Thomson’s Non-Overwind, simplest, safest, surest, and cheapest. Sutcliffe’s Universal Sounding & Displaying Signalling Apparatus, fully complying with Regula- tion 95 of the MINES ACT. NOTE.—The above machinery is all patented or protected and makers or users of infringing articles will be liable to be prosecuted. PATENT SHELTERED SEAT TRYCOCK - For - WATER GAUGES. Fig. 6685. SPECIFY FIG. 6685 Sent on Approval. ADVANTAGES NO ASBESTOS PACKING TROUBLES. No plugs to work loose and leave the packing faces, causing cutting and leakage. No circular action to cause grooving. Easy method of operating, as there is no packing fric- tion to overcome. Is not affected by expan- sion. Large outlet for discharge of sediment, &c. Self Cleansing. Main valve opened and closed at atmospheric pres- sure. which overcomes the cutting action of the steam and water at the point of opening and closing. VALVE AND SEAT OF HOPKINSON’S “PLATNAM” METAL, which does not cut and score like gunmetal & other alloys. Upward* of 500 ton* of Standard Steel Casting* kept in stock. We can give immediate delivery of iron and steel valve*. Illustrated Catalogue Post Free on Application. J. HOPKINSON & C° LD Huddersfield. | FULL PARTICULARS FROM RICHARD SUTCLIFFE, Universal Works, HORBURY, WAKEFIELD, England Makers of Patent Safety Boiler Mountings and Valves For High Pressure Superheated Steam, High-class Exhaust and Water Sluice Valves for Condensing Plants, &c., Automatic Exhaust Valves, Reducing Valves, Steam Traps, &c., &c. Depots and Showrooms—London, Glasgow, Edinburgh, Cardiff, Oldham, Blackpool, Paris & St. Petersburg. No. 306.