Show NEW ORE REDUCING MACHINERY MACHINE RYO A of some years ago william san francisco began to devise and put into practical operation as a manufacturer an improved stamp mill which so pleased the mining fraternity as to come immediately into practical use in many camps the important features about the mill many of which we believe are patented are 1 each stamp is separated from the other stamps in the mortar by a diaphragm which not only strengthens the mortar but separates each individual stamp from the splash and swish of the other stamps in the battery 2 each stamp has its own separate ore feeder and water supply 3 each stamp has a quadruple discharge that is it has on all four faces permitting the pulp to escape from the mortar day complete units can be so placed one along side of another in a mill as to make possible and effecting a very large production an important saving in first outlay of both plant and buildings two companies have been formed in the east to manufacture mr machinery one in new york the machinery company having the manufacturing done by the quintard iron works and the other engineering company of toronto canada who are manufacturing under the canadian patents for the dominion and whose mechanical work is done by the william hamilton manufacturing company peterboro Peter boro ont several score of these plants are in practical operation era tion and the results obtained appear to justify the large claims of the inventor N Y engineering and mining journal at the moment it is fine enough to pass a screen which not only prevents sliming but makes room for incoming ore these improvements enable each stamp in a battery to handle from f born six to eight tons per day 24 hours of hard quartz through a 40 mesh screen wet at an expenditure pend iture of about 2 horsepower horse power for a 1200 ib stamp an improvement growing out of the quadruple discharge is that outside of each screen a battery plate is inserted and these battery plates secure from 60 to 90 per cent of the free gold right in the battery these plates can be changed frequently and easily without even stopping the stamps the mills are built with 1000 to 1500 ib stamps and in batteries of two three and five stamps mr also found that a combination of machines for reducing ore by a gradual reduction process could be used to advantage on this class of ores and in harmony therewith developed a special line of ore breakers for preparatory crushing to half inch size using the stamp mill to reduce still further to 8 or 10 mesh and a s specially ally improved chile mill for fine grinding by the use of this system of milling a comparatively inexpensive mechanical plant cheaply operated is made to handle in a very efficient manner up to tons per |