406 THE COLLIERY GUARDIAN. August 23, 1918. [supplement page II.] Sections of our Patent Roller Conveyor. Our Patent Roller Jigging Conveyors are unequalled for efficiency, construction, durability and increasing output. It is the best labour-saving plant introduced into a mine. No* 4 Conveyor will deal with 500 tons per shift »o|00 •olco I?- Jg & ♦ll: PATENT COMPRESSED AIR-DRIVEN MOTOR. Made in sizes to suit all requirements. * ■ MOTOR ARRANGED ALONGSIDE CONVEYOR. Telegrams: “Conveyor, Sheffield.”