1342 THE COLLIERY GUARDIAN. December 27, 1918. Sections of our Patent Roller Conveyor. Ns 4 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. Bff,rISHMANUFACTUHk j r PATENT COMPRESSED AIR-DRIVEN MOTOR. Made in sizes to suit all requirements. MOTOR ARRANGED ALONGSIDE CONVEYOR. Telegrams : “ Conveyor, Sheffield.