January 14, 1916. THE COLLIERY GUARDIAN. 63 GEORGE FLETCHER&CO.LTD. SPECIALISTS IN DERBY PLOWRIGHT BROS. LTD., Brampton Iron Works, Chesterfield. COLLIERY, MINING & CEMENT WORKS PLANT. UNDER GOVERNMENT CONTROL. Stone Dust Grinding Plants. Made in Three Sizes. Economical to work and run. GEORGE Grinding Plant under Erection. London Office : 21, Mincing Lane. Tp[ pphone: 817 (2 lines). ’Phone: 2813 Avenue. 1 C L Cgrams : “Amarilla, Derby.” ’Grams: “Amarilla, Fen, London” Speciality— COAL SCREENING & CONVEYING ' sr. SECTION OF SCREENING PLANT AT BENTLEY COLLIERY, DONCASTER. CONSIDERABLY OVER ini! Pl ANT? '°"»TT^r iUU I Lrlll I O and the colon,e- Estlmatos and Designs on application. Agent for South Wales: A. LEIGHTON STEVENS, 15, Fields Road, Newport, Mon. GREENWOOD & BATLEY Ltd., ALBION WORKS, LEEDS. Telephone—S200 LEEDS. » Telegrams—” GREENWOOD, LEEDST STEAM TURBINES HIGH PRESSURE,—EXHAUST STEAM,—MIXED PRESSURE. FROM 3-B.H.P. TO 600-B.H.P. Part of order for totally enclosed gas- proof Mining Motors with ball bearings and plate glass spy holes. o a ELECTRIC MOTORS AND GENERATORS. A.C. AND D.C. FOR ALL PURPOSES. PATENT SHELTERED SEAT TRYCOCK SPECIFY FIG. 668 5 Sent on Approval. ---- For ----- WATER GAUGES. Fig. 6685. 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 tn Stock. We can give immediate delivery of iron and steel valve*. Illustrated Catalogue Post Free on Application. J. HOPKINSON & C° LD Huddersfield. 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 & Petrograd. No. 342.