Show j J SC C MINING AND metallurgical PATENTS C X I 1 6 1 0 the following mining and metallurgical patents have been issued by the united states patent office apparatus for reducing zinc no casper W miles of cincinnati ohio in a metallurgical furnace a fire box adapted to sustain a body of combustible mano X 20 1900 C E DAVIS still GE lac M lip illy ferial a reduction chamber spanning the from said fire box and communicating communication therewith means substantially as described for feeding a charge of ore and carbon to the reduction chamber and means for drawing a regulated fractional quantity of the products of combustion from said fire box through the charge of ore in said reduction chamber and an off take flue for the remaining products of the combustion mine aline haulage locomotive no charles E davit of chicago illinois assignor by mesne assignments I 1 to the link belt machinery company A mine locomotive comprising an armature and shaft a fixed axle and a swiveled axle said swiveled swi velea axle working in bearings rigidly attached to a cylindrical piece which acts as a bearing for fo one end of the armature shaft and which moves with said axle substantially ly as described mine signal M no ao john B falkenstein and george A falkenstein of astoria illinois aish assigners assignors Assign nors ors of one third to william scripps of same place A mine signal comprising 1 a movable signal 11 board provided with a rack a pivoted and bodily 1 movable doy dog 11 adapted for engagement with the rack means for moving the dog pivotally and then bodily to engage engage the rack and move the board means for engaging C the rack to hold the board in its adjusted position and means for releasing the rack no relates to improvements in cupolas or smelting smelling Sm elting furnaces of the kind generally used in foundries fredrick hardert of cincinnati ohio in a cupola the combination with means for supplying an air blast of awyer blocks supported in the wall thereof and containing each a number of air passages arranged in a horizontal and vertical row said blocks disposed in two rows around the furnace one row above the other one and alter alternating natina so that in the upper row of blocks the vertical row of air passages is below the horizontal one which disposition is reversed in the lower row apparatus for oxidizing or roasting refractory frac tory ores no robert A stewart of kansas city missouri assignor assigner to the stewart oxidizing company of colorado in an apparatus of the character described a rotary ore retaining cylinder having a neck passage and an exit opening a furnace communicating muni cating with said neck passage means for discharging steam and air into the furnace a door closing the rear end of the cylinder and provided with an exit opening a stack connected with said exit opening and means for disconnecting said stack from said exit open ing in order that the door may be opened substantially as and for the purpose set forth treatment of gold and silver ores etc no john cuninghame k mont omerie of stair scotland and henry parkes of london england in the extraction of gold and silver from ores or compounds containing the same the here herein in described process consisting in treating the ore or compound with a cyanide of an a 2 ine I 1 t e C e e 41 B B e h 1 NO alkali met metal al caustic alk alkali alfand and barcom dioxide in conjunction with ammonium sulphate ore orrock or rock breaking machine No 1 edw edward ard comerford of liverpool eng eing land in a rock ore or analogous breaking machine the outer conical body having its axis axia vertical an inner loosely mounted crushing ta barrel r c and a vertical shaft a having its bearing axis at the upper and lower ends con 1 1 centric with the axis of the body and having an eccentric portion a on which the said A C D NO crushing barrel e c is mounted and free to revolve with its axis inclined outward from the upper end toward the lower end whereby the eccentricity y of the lower part of said ball bearing portions por tiona is greater than the ec eccentricity en of the upper part IS process of treating gold ores no charles wax of best Ren selar dr county new york in the treatment of gold ores for libe liberating the gold from its combination or association with other elements or compounds the process which consists in divesting digesting the ore under steam pressure in a solution containing water glass sodium or potassium silicate |