Show aal MINING AND metallurgical PATENTS X i t the following mining and metallurgical cal patents have been issued by the united states 1 patent office no philip argall of denver colorado ore roasting 11 furnace an ore roasting furnace provided with a h reciprocating 0 bottom longer t than the said Jur 1 furnace burnace nace and means for moving said bottom 1 back and forth a specific distance equal to said excess of length whereby the furnace always remains closed at the bottom no charles P and george delius of seattle washington process of extracting precious metals in extracting precious metals from ores f r the process comprising the following steps first pulverizing the ore to a fine pulp sec 1 ond dissolving the metals from the foreign F matter by immersing the pulp in a bath com I 1 v an aqueous solution of common salt I 1 I 1 caustic lime and a small percentage t of brom in fluor spar and saltpeter third recovering the precious metals from the bath by means T of electrolytic action no aldert H stebbins of little rock arkansas ore concentrator in an ore concentrator a supporting f framework rame settling chamber supporting devices connecting 11 t the lie framework and settling chamber the latter comprising a plurality of sim ilaray shaped separate pip pipes es and havin having a gradually increasing cross sectional area from bottom to top each pipe ext extending endino into and r cr V L b C jq NO ia pt part way up its next interior pipe and below the bottom thereof an agitator directly be f low low the e settling chamber and communicating p with the central pipe of the series mea means ns for i geedin gores ores into said agitator devices for forcing a blast of air into and through said acri agitator to lift the entire mass mas of ores directly upward through 9 h the central pipe into the settling chamber no john F mckay of prosperity missouri assignor one half to john raymond ay 0 0 AP J z 0 NO and claud D raymond of webb city missouri apparatus for loading or unloading mine cages or buckets in an apparatus of the class described the combination of a vertical 0 guide or way having in a liae track and provided thereat with an opening a bucket or cage having upper and lower devices enc engaging raging the guide arway or and a pivoted switch mounted adjacent to the said side track and provided with arms one of the arms bein being arranged normally across the guide or way to direct or switch the upper device of the bucket upon the side track and the other arm being beinar arra arranged nored to be eno engaged acred by the said upper device to close the switch and cause the lower device of the bucket to be carried upward to invert the bucket no smith W kimble of new york N Y machine for foi crushing ores etc in a crus crushing hincy machine a muller a shaft tor for the muller a mortar operating cooperating co with the muller a yielding support for the shaft and means for actuating the shaft to impart a movement of to the muller no edward S martindale of warren pennsylvania assignor to the kinnear manufacturing company of same place acetylene gas generator in an acetylene gas generator the combination with the generating chamber of a container supported above the same comprising a circular stationery frame having a series of buckets circularly arranged and pivotally and nd ratably mounted therein on axis substantially radial of the said frame and rotary means of operating to successively en gage said buckets to rotate them in turn on their pivots and cause them to discharge their contents into the generating chamber substantially ly as described no alburtis C hilsinger of killawog Killa wog new york assignor to calvin amory stevens of new york N Y in a stone and ore crusher the combination of two attrition rings mounted on guide rolls and in peripheral contact with each other and opposed internal crushing rolls in said attrition rings the journals of the opposed crushing rolls being supported in id bea bearings which are connected with springs 1 which contend constantly to force the peripheries of the rolls into contact with the interior surfaces of the rings 2 no edward fink of milwaukee wisconsin process for extracting copper or other metals from tailings of ores of such metals the process of extracting copper and other metals from tailings 11 or ores of such metals i 1 which consists in subjecting the tailings love lore or to the action action of a solution containing sulphuric acid and to the action of an oxide or oxides of nitrogen in the presence of air or oxygen under pressure whereby the metal is oxidized and dissolved and the oxide or oxides of nit nitrogen are converted alternately into a lower and a higher oxide or oxides and finally separating the solution from the earthy matter of the tailing or ore and separating the metal from the solution no arthur of mexico 1 mexico 1 centrifugal ore separator A centrifugal ore separator and concen 9 M V 77 0 I 1 ad 9 xa NO comprising the revolving working surface havin having the central deflecting portion 2 and the plane outer portion 3 in which are are sunken tangentially disposed grooves a thereby forming plane I 1 lands b on said outer portion between said grooves and tho hoed having the inlet and disposed in proximity to said working surface but out of contact therewith and con conforming formino L in its proximate side substantially to the profile of said working surface and thereby forming a centrifugal fu fugal al air passage c above the walls of the grooves for the blast of air induced by the tangentially disposed grooves no john J brewis of milwaukee wisconsin steam engine 11 for ore stamps in a steam stamp a pair of vertical standards a bracket mounted on each standard a steam cylinder supported on pivots between said brackets bolts bolt for clamping said cylinder securely between said brackets screws for adjusting the vertical position of said brackets on said standards and connections between said screws so as to cause them to turn together no thomas E leece of bishop california apparatus for working ores of valuable metals in an apparatus for the working of ores a containing tank havi having an endless traveling belt with d directing rollers by which one portion is caused to follow the interior along the line of the end bottom and the front and the other portion is returned to the point of beginning beneath and exterior to the tank and a pressure roller beneath which the upper part of the belt passes as it emerges emerges from the tank no david al smyth and joseph el smyth of pasadena california ore stamp the combination with the stamp and a shaft and cam for raising the same of an electromagnet tro magnet circuit connections and a switch actuated immediately before the cam separates from the stamp for turning the current into the electromagnet and a s spring pring intervening between the electromagnet and the stamp and acted upon by the ar mature armature of the magnet for applying the power of the magnet magne at through the leverage I 1 of the spring r in accelerating the fall of the stamp |