1232 THE COLLIERY GUARDIAN. December 13, 1918. 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. lo|C0 ‘olco is iI British manufacture j PATENT COMPRESSED AIR-DRIVEN MOTOR. Made in sizes to suit all requirements. APRUANCES C« ' SHITlSH MANUFACTURE I MOTOR ARRANGED ALONGSIDE CONVEYOR. Telegrams: “Conveyor, Sheffield.”