The Mechanical Handling and Storing of Material

THE AUTOMATIC WEIGHING OF MATERIAL 713 This machine is built in twenty-four sizes from 12 to 96 in. in height, the respective capacities for the different sizes being from 20 to 12,000 lb. Avery’s Automatic Weighing- Machines for Sacking-off Purposes.— The Automatic Net Weigher (see Figs. 1019 and 1020) is built on the lines of the machine described above, but is specially constructed to meet the requirements of those who prefer to have their material weighed net, and then delivered into sacks. The machine is a great labour saver; one man can work it, filling, weighing, and counting automatically about four sacks per minute. The machine cannot discharge until the man has the empty sack in position ready to receive the load, when he simply touches a lever which causes the machine to discharge and make another weighing ready for the next empty sack. Every discharge of the machine is registered, thus keeping an accurate record of the number Figs. 1021 and 1022. Avery’s Weighers for Chaff and Grain. of sacks sent out. Each weighing balances as soon as the grain is cut off; the operator sees this balance. Avery’s Automatic Gross Weigher possesses the chief features of the Net Weigher, but it weighs the sack and material together. The speed of working of this machine is not so quick as the Net Weigher owing to the time necessary to attach the empty sack to the bag holder by a strap and clasp. Both machines being portable they can be moved about from place to place. Avery’s Automatic Machine for Provender Mills.—The automatic weighing of chaff is admittedly difficult, because the extremely light nature of this material necessitates a large quantity in the weighing hopper before any weight and consequently power can be obtained, and also because chaff from its nature will not run readily in spouts and hopper-shaped receptacles. For these reasons many forage and provender mills have hitherto employed measuring devices for chaff, the grain being added in the proper proportion by means of weighing machines. Figs. 1021 and 1022 show an installation in which Avery weighers are used both for