August 11, 1916. THE COLLIERY GUARDIAN. 279 Hydraulic Liftinc and Traversing Jack. , The “Ryland” “Easy Lifting”& “Quick Lowering” Worm Block. Gin Block. Wood Haley Jacks, Head and Foot Lifting. Overhead Runner. ‘Low Built” Colliery Crab. - Ask for List No. 28. - YOUNGS, Ryland Street Works, BIRMINGHAM. Rail Jack. Pillar Hoist, Winds Any Height. Worm Block, with Automatic Self- Sustaininc Brake. EDWIN LEWIS & SONS, Original Makers of “Acme,” “ Williams,” and other Loose Flanged Joint Tubes . f for Mining Work. TUBES ■UB OF ANY SIZE For Compressed Air, Water, or Steam. Telegrams—Lewis, Wolverhampton.” -wz-m 5 Patent Iron Tube Works. Monmore Green. Telephone—Nos. 15 <5 180 Wolverhampton. ( 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. Steel Underframe Railway Car- riages, Tram, ars, and Wagons of every description for Hire and Sale by Immediate or Deferred Pay- ments. Ironwork, Wheels and Axles. WAGONS. Also Wagons with Oak Underframes Makers of HYDRAULIC PRESSED BOSS and other WHEELS and AXLES. PRESSED STEEL EOGIES. Wagons for Hire, capable of carrying Six, Eig-ht and Ten Tons, part of which are con- structed specially for Shipping* pur- poses. Wagons in Working* Order maintained by Contract. SECOND-HAND BALLAST WAGONS FIT FOR MAIN LINE TRAFFIC. Sole Manufacturers of Dean & Churchward’s “ E1THERSIDE BRAKE,” and Marillier’s Patent “ INSTANTER COUPLING.’* Tlie Birmingham Railway Carriage & Wagon Co. Ltd., WORKS : SMETHWICK, BIRMINGHAM. Telegrams—‘‘Carriage, Smethwick.” Telephone—No. 296 Smethwick (4 lines). MECHANICAL ENGINEERING OF COLLIERIES T. c. FBuyTERS Vol. I., Price 21s. net (By post 21s. 8dJ. Vol. 11., Price ios. 6d. net (By post Ils.). SUPPLEMENTARY VOL.—Price ios. 6d. net (By post Ils.). THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C. LOWER RAISE, 5 Slower .steadily^ ’raise ^STOP 9\ k 8 Patent No. 7638. and Patents Nos. 7241 and 17607 applied for. WINDING SIGNALS “ NON-CUMULATIVE.” DAVIS’S Self-Contained SOLENOID BELL with DIAL INDICATOR. Simple, Efficient, Inexpensive SEND FOR LIST 41 V. JOHN DAVIS & SON (DERBY) LTD., All Saints Works, DERBY; and 17, Victoria St., Westminster, London, S.W Phone—240 Derby. Telegrams—“ Davis, Derby.” ROBURITE No. 3. HELD BEST RECORD for SAFETY for 26 YEARS. ROBURITE I* 4 Is now BEST & SAFEST on the New Permitted List. NEGRO POWDER No. 2 & DREADNOUGHT POWDER Also on New Permitted List. ROBURITE anxl AMMONAL LTD., GATHURST, near WIGAN. LONDON OFFICE:—103, CANNON STREET, LONDON, E.C. Telegraphic Addresses: “Roburite, Cannon, London.” “Roburite, Uathurst.” Telephone Nos.: 141 Bank. 9 Upholland.