December 20, 1918. THE COLLIERY GUARDIAN. 1291 STEAM, MOTOR, BELT OR ROPE=DRIVEN AIR & GAS COMPRESSORS From 50 to 15,000 cubic feet FOR COLLIERIES, MINES, Etc. STEAM-DRIVEN AIR COMPRESSOR. h Li ■ *0 ADVANTAGES SIMPLICITY. RELIABILITY. DURABILITY. HIGH EFFICIENCY. SELF-LUBRICATION. BEST WORKMANSHIP. SMALL FLOOR SPACE. MINIMUM MAINTENANCE. MOTOR-DRIVEN AIR COMPRESSOR. f **" ** I *- 1 -T £ 1 I o BELLISS Telegrams : “BELLISS, BIRMINGHAM.” & MORCOM BIRMINGHAM. LIMITED, London Office: 8, VICTORIA STREET, S.W. 1. I 7 I / 11 Spike. A j I L PIT RAILS 12 BRIDGE & FLANGE_ SECTiONS