878 THE COLLIERY GUARDIAN. May 5, 1916. THE AVONSIDE ENGINE GO. LTD. BRISTOL. (WELBECK, 166} BEST FINEST WORKS LOCOMOTIVES. flUCE LR55E5 usrs om fJPPi/c/rr/o/f. ^PRESSURES GAUGE CLASS WASHERS LUBRICATORSnc VflUXHfllL R° k LIVERPOOLj TREASURE AULDS PATENT STEAM REDUCING VALVES PROFIT STANDING BETWEEN PROFIT and LOSS Engineers know that FRASER means—Pulley efficiency, highest accuracy, enduring service, in fact, through and through, the demonstra- tion of care and attention to those little things —those details, so to speak, that stand between profit and loss. DOUGLAS FRASER & SONS LTD., ENGINEERS, ARBROATH, SCOTLAND. FRASERS PULLEY S j Also Makers of Special FULL BORE Patent Steam Reducing Valves for Blowing, Winding, Pumping and other Engines, and for supplying Surplus or other steam irom high to low pressure boileis, &c. DAVID AULD & SONS, Patentees Makers, LTD. Whitevale Foundry, GLASGOW. SMALLMAN patent HAULAGE GUPS. TYNOS. “Bitromarc” Solution A highly efficient Bituminous. Anti- . Corrosive Black Enamel Paint for Iron and Steel Structures, Corrugated Iron, Ships’ Holds, Bunkers, &c. SOLE PROPRIETORS: S. T. TAYLOR & SONS, Tynos Works, SC0TSW00D-0N-TYNE. Tel. No.: 65 Central. Tel. Address; “ Compo, Scoitwood.” New Model: Nine Sizes. Patented 1902, 1906 and 1910. Automatic Detachment. The 1911 lever has large lateral stops and wedge-shaped head. Drop-forged shells (two sizes), levers (fouj sizes), catches and couplings. Illustrated Catalogue. Clips can be had without catches. Patentee and Sole Manufacturer:— El JAMES W. SMALLMAN, Nuneaton, England. ALFRED ALLEN & SON LTD. Makers of .LIERY AIR PIPES. ROPE DRIVING FOR EFFICIENCY DURABILITY USE DIPLOMAS OF HONOUR BRUSSELS and TURIN. Illustrated Lecture on— “THE TRANSMISSION OF POWER BY ROPES.” Post Free on Application. b LV* * Telegrams: '* Kenyon, Dukinfield.” Telephone: 494 Ashton. LONDON OFFICE : 95 & 97, Finsbury Pavement, E.Q. Wm. KENYON & SONS Ltd., CHAPEL FIELD WORKS, DUKINFIELD, near MANCHESTER. FOUNDED 1895. THE QUARRY The Organ of mi Stone, Marble, Slate, Lime, Clay and Cement Trades. Price— 6d. monthly. Annual Subscription, 7s. 6d. post free (payable in advance). and COLLIERY TUBS In IRON, STEEL and WOOD. Lower Gornal, nr. Dudley. Telegrams—“ Allen, Lower GornaL.” Telephone—106 Dudley. HAMON PATENT Offices— 30 & 31, Furnival Street, Holborn, London, E.C. Cooling Towers Hamon Bros., Belgian Engineers, 94, Rue St. Lazare, PARIS. Agent— GEORGE DESCAMPS, 36, Abbeydale Rd. South, SHEFFIELD. 208 pages f’cap folio. Over a hundred illustrations and 60 plates (coloured). PRICE IQs. IQs. 7d. post free. RECORD of First Series of the BRITISH COAL DUST EXPERIMENTS Conducted during 1908 and 1909 at the Altofts Experiments Station, by the Committee appointed by the Mining Association of Great Britain. PUBLISHED BY — / THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C.