The Mechanical Handling and Storing of Material

130 THE MECHANICAL HANDLING OF MATERIAL conveyors of similar type, namely, inability to work except in one plane, or'at.least with only a very slight deflection. It is claimed for the Humboldt conveyor that twill go round any incline backward and forward in both planes, and that it is therefore Fig. 175. Pan and Bucket Conveyor receiving Feed from Floor on either Side. adaptable for installations where the ordinary travelling bucket conveyor would be useless, or where more than one would have to be used, and the material transferred from' 'one to the other. The conveyor under consideration consists of a number ot miniature carriages, which are each fitted with two spindles and four wheels The carriage resembles a small contractor’s truck (see Figs. 180 and 181); it is pivoted above its centre of gravity, round which pivot it can be tilted. I he trucks are coupled together by a central coupling bar, and these coupling bars allow not only of an upward and downward motion, but also of a side movement within certain limits. The conveyor is supported on a pair of rails similar to other conveyors of this type, and where curves