Show NEWEST STAMP MILL EMBODIES MANY improvements the new model straub stamp mill embodies some ing improvements and retains its original 6 unique features such as portability crushing capacity and reliability the latest design is of extreme simplicity calling for the least number of moving parts in an effort to 9 give ive satisfactory 1 ser vice under rigorous conditions this latest model is of the type the bevel gear and pinion together with the pinion shaft thrust bearings b and pedestals formerly used being eing completely eliminated eliminate d the drive is n now ow of t the h e simplest type consisting of a special ecial wood faced cast steel spoke bull wheel fitted directly ao the vertical camshaft the camshaft itself has been ini creased in size and fitted with long bronze bushings in t I 1 the new model the lower bearing runs in an oil bath all and the cam calm plate P and cam rest upon special ba timken roller thrust bearings also operating submerged in aubri ca ant vi visible s ible indicators are supplied so that the level of the oil n ou lk bath ath can bd instantly verified this oil bath lubricant eliminates ii nates all possible chance of failure through lack of luon the camshaft does not extend through the lower head aal and d therefore oil or grease cannot possibly foul the ore an additional refinement consists of a grease pocket cast ca into the tappets and packed with lubricant as a tion in i against the against over aubri lubrication cation A great improvement made lower r screen assembly gives instantaneous access to the interior lor of the mill and permits the operator to actually see the crushing operation while the mill is in operation chall the ore feed consists of the standard heavy pattern challenge 1611 feeder distributing the ore onto a chute fro from ivsich and it falls onto to the inverted cone in the center of the mill u is ls there distributed equally to all of the stamps these mills in s are made in three sizes of 5 10 and 14 stamps bequir ng b only y 3 7 and 12 h p respectively the screen area is extremely large extending completely around the mill so that rapid crushing and quick discharge are insured owing to the revolving motion imparted to each stamp by the cam the wear on the shoes and dies is remarkably mar kably even and hence they can be worn down extremely thin this motion also exercises a distinct polishing and brightening action upon any metallic values so that the inside amalgamation properties of the mill are very pronounced the entire design renders this mill suitable for transportation por tation into the most remote localities and is the basis of the slogan anywhere a mule can cango igo |