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Show INTER-MOUNTAI- N MINING REVIEW. The Dodge Improved Mill. Herewith is presented a description of the Dodge Improved Mill, for crushing and grinding ore, manufactured vators required while crushing dry ore. and form a grating through which the Three sizes of the mill are made, with ore passes to the screens, which are on capacities of from forty to sixty, twen- each side of the hexagon, and afford' a ty to forty and ten to twenty tons per ready means of discharge for any ore hours. The No. 2 size can that is crushed fine enough to pasa by the Dodge Machinery company of twenty-fou- r San Francisco. It is extensively used be cut in sections for mule-bac- k trans- through them, while the coarser partion the coast, and many points of su- portation. cles are returned to the interior of the over other forms of rotary periority This mill consists of a hexagonal barrel for further crushing. crushing mills are claimed for it. drum or barrel, as shown, into which The mill being hexagonal in shape ' i t i i CUT NO. 1. Among the advantages are the follow- ing: An inexpensive foundation; smaller number of wearing parts, small amount of power required; large screen surface; no loss by sliming; amalgamation done on outside plates, so that there is no flouring; grinding with hard ore brightens the gold; no ele- - CUT THE DODGE MILL ARRANGED FOR WET CRUSHING. the ore, after passing through the the ore does not slide in mass, as is fed by a Challenge is the case in cylindrical mills, but is through the feed hopper (8). raised to a certain point and dropped The barrel is lined with forged steel by each side of the hexagon as the which are held in place by mill rotates, thus insuring more effectbars, wedges, secured by bolts and steel ive crushing and less wear on the springs to prevent their working loose. bars. These bars are so placed that there is Pieces of hard quartz or ore are used a space one-ha- lf inch between them, for crushing. Steel grinders, weighing no. 2. rock-break- er, ore-feed- er SECTIONAL VIEW OF THE DODGE MILL. |