The Mechanical Handling of Material

Book excerpt: This book on mechanical handling of materials includes sections on continuous hauling of material (elevators; worm conveyors; push-plate or scraper conveyors; trough cable conveyors; band conveyors; metal band conveyors; picking belts or tables with or without lowering ends or shoots; the continuous trough or travelling trough conveyor; vibrating trough conveyors; tightening gears for elevators and conveyors with summary of driving power, speed of travel, and wear and tear of elevating and conveying machinery; the gravity or tilting bucket conveyors; pneumatic elevators and conveyors; and conveyors designed for special purposes, including the bolinder timer conveyors, coke conveyors, and casting machines). The section on intermittent handling of material has two chapters on endliess chain and rope haulage and ropeways and aerial cableways, including ropeways, cableways, and applicances for coaling at sea. The third section on unloading and loading appliances includes chapters on discharging by means of skips and grabs, discharging vessels and barges by means of elevators, unloading by means of specially constructed self-emptying boars and barges, discharging of railway trucks, unleading by means of coal tips, colliery tipplers, miscellaneous loading and unloading devices, and automatic loading devices. The miscellaneous section has chapters on the automatic weighing of material, coaling, of railway engines, coal-handling plant for gas works, power stations, boiler-houses, etc., floor and silo warehouses for grain and seeds, coal stores and coal silos, and high-level or cantilever craines. Illustrated with many well-done fold out plates with schematic drawings. (jvl).