March 20, 1914. THE COLLIERY GUARDIAN. 651 SOLE MAKERS F. RED DAW AY & PENDLETON. MANCHESTER. LON DO N OFFICE 5O/l LIME ST., E C. GUTTER PICKS, HOLLOW DRILL STEELS AND TWIST DRILL STEELS r 'I IJ Buy Price 3S. 6d. post free. A Practical Handbook for Colliery Electricians. ELECTRIC CIRCUIT PROBLEMS in Mines and Factories. — BY — ELLIS H. CRAPPER, B.Eng., M.I.E.E., Head of the Department of Electrical Engineering at the University of SheMeUl. THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C. ...yr Established 1800. BRASS TIME CHECKS JOHN LAWSON & SONS, Manufacturers of every kind of STEEL STAMPS, LETTERS, FIGURES, BRANDS, STENCIL PLATES, &c. Telephone No. 577. Roebuck Letter Works, 26, Carver Lane, SHEFFIELD. ■■■■It Galvanized Sanitary^ Pans complete with Cover (To comply with the Coal Mines Act.) From each. Also maker of Dust Bins, Strong- Buckets, Chains, Wrot Nails, etc. Please enquire prices. THOS. A. BRETTELL, Quarry Bank, S. STAFFS. Established 1884. Bridge’s Patent Friction Clutches &, Hauling Installations A SPECIALITY. ____SEE ADVERTISEMENT LAST ISSUE, PAGE 603._ Sole Makers— DAVID BRIDGE & CO. LTD., Haulage Works, CASTLETON, Manchester. colliery owners manufacturing bricks SHOULD SUBSCRIBE TO THE BRITISH CLAY-WORKER The Organ of the Brick and Tile Trades. Published Monthly. Subscription : 8s. per annum, post free Send for Specimen Copy to the Publisher, THE BRITISH CLAY-WORKER, 43, ESSEX-ST., LONDON, W.C. READY FOR USE IN ALL MAKES OF MACHINES. 59. from the Makers: THE HARDY PATENT PICK CO. L° SHEFFIELD. tOIYEf / MEN 4 E. C. THEEDAM Coal Mines Regulation Act. General Rule 95. INDICATING SIGNAL BELLS. Mechanical or Electrical. Price and detail on application. LTD., DUDLEY. NEWTON, CHAMBERS & Co. Ltd., THORNCLIFFE IRONWORKS, near SHEFFIELD. ESTABLISHED 1793. TANK in Cast Iron or Steel. GENERAL CASTINGS, CONSTRUCTIONAL STEELWORK CONTRACTORS to the ADMIRALTY, WAR OFFICE, and CROWN AGENTS for the COLONIES. Telegrams—“NEWTON, SHEFFIELD. * Telephone No. 2200 Two Lines. Patented 1902, 1906 and 1910. Automatic De-ta.olame rxt The 1911 lever has large lateral stops and s wedge-shaped head Drop-forged shells (two sizes), levers (fow sizes), catches and couplings SMALLMAN »«"< HAULAGE CLIPS New Model: Nine Sizes Illustrated Catalogue Clips can be had without catches Patentee and Sole Manufacturer 1— JAMES W. SMALLMAN. NUNEATON, Englaat