November 3, 1916. THE COLLIERY GUARDIAN. 875 Wood Haley Jacks. Wall Crane. Hydraulic IJack. Duplex Punch. Heavy Liftings Crab. YOUNGS BIRMINGHAM Strong Wall Crab. Rail Bender. Screw Traverse Jack. Cin Block. Worm Block. W.M WffgtA worn W/VM Steel Underframe Railway Car- riages, Tramcars, and Wagons of every description for Hire and Sale bv Immediate or WAGONS meats. Ironwork, Wheels and Axles. Also Wagons with Oak Underframes Makers of HYDRAULIC PRESSED BOSS and other WHEELS and AXLES. PRESSED STEEL BOGIES. Wagons for Hire, capable of carrying Six, Eight and Ten Tons, part of which are con- structed specially for Shipping pur- poses. Wagons in Working Order maintained by Contract. Electric Signalling With BARE WIRES. SECOND-HAND BALLAST WAGONS FIT FOR MAIN LINE Sole Manufacturers of Dean & Churchward’s “ EITHERSIDE BRAKE,” and Marillier’s Patent “ INSTANTER COUPLING.’ TRAFFIC. DA VIS-MACDONALD SOLENOID BELL (TREMULOUS ACTION) PATENT No. 23211. With this Bell there is no possibility of a spark. Suitable for A.C. or D.C. DAVIS’S RELAY with SPECIAL WINDING, overcoming sparking on the line. Carriage &> Wagon Co. Ltd WORKS : SMETHWICK, BIRMINGHAM. Telegrams—“Carriage, Smethwick.” Telephone—No. 296 Smethwick (4 lines). SEND FOR LIST 41IH.O.S. JOHN DAVIS & SON (DERBY) LD MECHANICAL ENGINEERING OF COLLIERIES. T. c. &tBrs. Vol. I., Price 21s. net (By post 21s. 84. . Vol. 11., Price ids. 6d. net (By post Ils.). SUPPLEMENTARY VOL.-Price 10s. 6d. net (By post Ils.). THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C. All Saints Works, DERBY. LONDON OFFICE—17, Victoria Street, Westminster, S.Wt EDWIN LEWIS & SONS, Original Makers of “ Acme,” “ Williams,” and other Loose Flanged Joint Tubes for Mining Work. TUBES OF ANY SIZE For Compressed Air, Water, or Steam. Telegrams—‘‘Lewis, Wolverhampton.” i Patent Iron Tube Works, Monmore Green. Telephone—Nos. 15 6 180 Wolverhampton. t Britannia Tube Works, Ettingshall. WOLVERHAMPTON. Buyers will note that the joint illustrated is our original “Acme” joint used largely for vertical columns as it is quite rigid, and suitable for sinking or per- manent work. LONDON ADDRESS-143, Cannon Street, E.C. LIVERPOOL WAREHOUSE-58, South John St. ROBURITE No. 3. HELD BEST RECORD for SAFETY for gC YEARS. ROBURITE N‘ 4 Is now BEST & SAFEST on tlxe New Permitted laist. NEGRO POWDER No. 2 & DREADNOUGHT POWDER Also on New Permitted Uist. ROBURITE and AMMONAL LTD., GATHURST, near WIGAN. LONDON OFFICE 103, CANNON STREET, LONDON, E.C. Telegraphic Addresses: “Roburite, Cannon, London.” “Roburite, Gathurst.” Telephone Nos.: 141 Bank. 9 Upholland.