618 [supplement page h.] THE COLLIERY GUARDIAN. September 20, 1918. Sections of our Patent Roller Conveyor. »o|°0 >OlC0 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. PATENT COMPRESSED AIR-DRIVEN MOTOR. Made in sizes to suit all requirements. MOTOR ARRANGED ALONGSIDE CONVEYOR. Telegrams ; “ Conveyor, Sheffield.