The Mechanical Handling and Storing of Material

188 THE MECHANICAL HANDLING OF MATERIAL pitch chains are used instead of cables, when the attachments are not in the form of discs, but rather in the shape of claws (see page 68). Conveyors for Bottling Stores, etc.—Among the smaller industries into which conveyors have found a ready introduction is the bottling industry. The principal conveyors used are the roller runways and the slat or tray conveyor. Fig. 254 illustrates a double service conveyor installed in the bottling stores of the Manchester Brewery Co., Ltd. An unusual feature in this case is the loop standing out at right angles to the main body of the conveyor. The chain used is the Dodge cable type with renewable malleable-iron bearing blocks. This chain, being flexible in two planes at right angles to each other, is not compelled to move in a horizontal path. Thus the direction of motion may be partly horizontal and partly inclined, and the axes of the Pig. 253. Latest Type of Bolinder Timber Conveyor as used in Timber Yards. terminal shafts may also be inclined, though usually vertical. It is driven by a 5 H.P. direct current electro-motor, and was erected by the Chain Belt Engineering Co., Derby. Another interesting example of a double service conveyor is in a mineral water factory. In this instance one strand runs down the centre of the factory while the return strand runs along an external loading-out stage, from which motor wagons receive their supplies. Thus the same conveyor is utilised both to take returned empties into the building and to carry full boxes to the various vehicles ranged alongside the stage in the yard. The striking economy and convenience of this method of working is obvious, in comparison with the old method of trucking in and out by hand