Show I 1 MINING AND metallurgical PATENTS X J the following mining and metallurgical Ia patents tents have been issued by the united states patent office no ventilator for ovens walter L culver st louis mo alo A device by which air may be admitted to any kind of an oven without opening the charging or other door no carl kellner of vienna austria hungary electrolytic apparatus for decomposing metallic salts this invention has reference refe to an all apparatus for the electrolysis of alkaline salts with the aid of a stationary mercury cathode me apparatus comprises a vessel A tor for tile the reception of the electrolyte to be decomposed and a trough B D inserted or suspended in the vessel A this trough having in its bottom openings b which are surrounded by projecting ing borders bl b that serve to prevent the escape through the said openings of the layer of mercury C which serves as a cathode and covers the bottom of the trough the anodes D are arranged 11 in the electrolytic space of the vessel A horizontally or vertically and in the latter case may as shown also project through the openings b into the brou trou trough uh B each of the trough openings is covered by a bell E of conducting non lion material which dips at its lower free edge into inco the mercury and is of greater fr reater width than the opening b so ho that it can be moved to and fro through a certain distance over this opening the extent of this move movement ment being limited by the upwardly projecting border berb b the bell thus encloses the decomposing chamber communicating with the vessel A and forma forms an electrically conducting non lion partition be tween iween the cne decomposing and the combining chamber of the trough B which is ia charged above the mercury cathode C which continues the seal with water acid jor or other substance ance with which it is desired to cause f the cation previously taken up by the mercury cathode to combine in order that the iner mercury cury cathode shall not become displaced by the lower end of the bell E sliding over the bottom of the trough B when th the e bell is being I 1 moved slots or notches or longitudinal channels bb are provided respectively in the lower edge of the bell as in figs fies I 1 and 4 or in the bottom of the trough at as in fig 5 A gas exit pipe F leads from the decomposing chamber to tile the exterior of the vessel A the anode D and the mer J NO cury cathode 0 are connected to the terminals of a suitable source of electricity the manner of working is as follows the electro electrolyte 1 y t e for instance a solution of common salt within the vessel A side of the anode D viz on tile the right hand side in fig r ig 1 if now the bells be shifted to the left into the position cion shown in dotted lines in fig biff 1 the stationary mercury cathode together with the amalgam becomes thereby situated in the combining com combining binin chamber chabbert chan berT trough B which is charged charge d jt it of the instance with may be h f water ane sodium 61 fot or out from the amalgam and combines urn separates sen water to form sodus sodie hydrate t at the time by the shifting of the belly th at sarae of the mercury which was portion previously situated situ t i outside tile the left hand side portions of brills bells that is to say in the combining cham chaj the ber will now be located in the de decompose decompo sm charn chamber berl and acts as the cathode to aai produce an amal amalgam gani with the sod sodium luin which n is continually being separated in the 8 said a j d d decomposing e chamber if the bells n ya R 6 j 9 4 fl EUM 7 IF 7 t ex c ex NO and the decomposing spaces or chambers becomes decomposed by tile the electrolytic action which takes place under the bells E the liberated chlorin gas cras being led off through the pipe F chilel while the he inet metallic allic sodium forms an amalgam am with the mercur mercury y cathode C which is situated within the bells E on one suitable interval of time be shifted back into the position shown in full lines i L e to the right hand the mercury on the left hand side of the anodes together with the amalgam formed thereon a again crain becomes situated in the combining r chamber charn ber of the trough 1 and consequently within the sphere of action of 40 2 5 el zy 5 leo 1 19 6 C n 6 ua 1 t 18 oct 3 0 og R 70 to leg 3 3 3 10 1 10 8 4 Z 31 3 30 so 55 ni E li U NO the water in such chamber while on the other hand the mercury s situated on t the e rl liht hand side of the ano anodes des and the amal amalgam cram portion of which has been acted upon in the meantime by water to remove the sodium becomes again acain situated in the decomposing chamber for the burp purpose os of formia for forming mii ia fresh amalgam it will thus be seen that by th the e to aril ani fro movement of the bells the tran transposition tion of the arnal amalgam gain formed in the decomposing chambers to the combining ch chamber ainger and the practically continuous formation of caustic soda in tile the latter are caused to to take place alternately on the one side and on the other side of the ano anedest des cath cathode od itself while the mercury remains remain at rest no safety device for shafts duncan mccowan 17 neihart eili art montana the g 2 tire aa 2 L 11 1 1 desir designate nate the timbers and at upright g guides des to whose inner faces f aces are ar head cached the supports 3 4 is the crosa carols is moving on the guides until its descent rested kv by tile the supports 5 is the rope which passes through eyes 6 in the crossbars cross bars of the crosshead cross head and sustains the bucket 7 through tile the medium of spreader chains 8 10 10 are tile the two members of tile clutch each hung on its shaft 11 in a casing 12 aind sprung normally inward by y a spring 12 each clutch member is provided on its inner face with a half socket 13 3 its lower end being beveled as at 14 and the bevel connected with the socket by a notch 15 from the back of this member leads a 1 chain or cord 16 which passes over a pulley 17 in the crosshead cross head and thence upward to a rod 18 the latter passes loosely through 11 in an eye 19 14 in the upper crossbar cross bar extends thence outward as at 20 and thence down ware through a hole 21 and normally protrudes as at 22 in position to rest upon the support 3 the springs 12 cause tile lower ends 22 9 of the rods 18 to protrude and when such ends are pushed upward by the supports the cords 10 16 are drawn upon and the members of the clutch are 0 opened on the ascent of the rope the head of the clamp passes between tile the notches 15 and strikes the lower end of the lowermost eye 6 in in the crosshead cross head and continued upward movement lifts the crosshead cross head licad which permits the clutch members to close no process for ore treatment benjamin njamin denver colorado this patent has for its object the treatment of ores which containing zinc and iron in connection with the precious metals are 11 difficult to smelt in the ordinary way the method employed is by the distillation of the zinc inc in ih a ari retort tort of peculiar and patented make followed by the collection of the distillate in any suitable way and the subsequent treatment of the residue in the retort which has been freed of its objectionable zinc by any of the ordinary methods 9 NO the retort is produced by forming its body affire of fire clay or equivalent material then applying to its inner surface and preferably also to the more exposed portions of its outer surface such much as the top a sintering wintering material such as silicate of soda adapted to chemically combine with the fire clay and also with the basic m material a teri al under suitable firing then applying a lining or coating of basic material such as burnt dolomite bolo mite magnesia or analogous analil ous substance preferable treating the upper outside surface in the same way then subjecting the entire body immediately before using to firing in a i kiln or in the furnace itself at a temperature rane ran ing tring about 1500 degrees fahrenheit for two or three days no coal cutting machine jonas L mitchell galesburg ill no roasting e furnace alfred E johnson victor colorado A furnace with its floor divided into steps which lead ultimately to a ing pit below the ash pit the floor is therefore like a set of stairs with broad treads and very low risers the ore is fed at the end fart farther berest est from the fire and travels towards it but falls into the discharging pit through rh a chute in the bottom just back of the fire bridge in each riser on the floor are a series of holes through which jets ets of air normal or heated may be projected horizon itally in jets or continuous streams is as may be preferred over each tread thus the ore in place of being ing carried forward by hand tools or metal scrapers ia blown from step to stop step as fast ay as it is fed and finally by the same means and also by its own gravity is forced down into the discharging pit by separate and in in genius genius contrivances the pressure of the air and the frequency of the impulses given to it may be altered to suit the character of the ore being the in claims that his system not only amov moves the ore in the most eco economical 11 way possible and with perfect automatism but at the same time provides provi fles an abundant and thoroughly disseminated supply of air bior oxygenation no process for ore treatment henry birshing Hir shing salt lake utah the invention invent lon relates to a process for the extraction of cupric oxide from copper ores but it is also applicable for obtaining silver and 9 gold old from ores containing the same whether with or without copper it is applicable to auriferous and arl ores generally but is advantageously and economically effective with ores from f roin which copper could not be obtained profitably by the melting and other processes in ores contadini con containing taini n r copper in a native state or as sulphide an arse c aids carbonates oxides or other compounds the copper is dissolved and precipitated as cupric oxide feed the required amount of the stock solution to wit ammonia to the extent of 34 parts to every 63 parts of copper contents through the pipe I 1 from the safety and condensation densa tion tanks B and B into the ore tank C then feed the fine ore through the ore feeder j agitate until a thorough disintegration has bus taken place usually two hours then add 0 x 6 A 4 1 n ell arn NO sufficient lelent water or boiled out solution from a previous run to obtain a strong so solution lution with a concentration of up to six pounds of copper to one cubic foot continue to a agitate aari tate about two hours allow to settle and di discharge t through rough b one of th the e valves at K aud in d pipe 2 21 into the settler D tho the main portion of the copper is then recovered in the settler D where about seven hours is I 1 given iven to deposit the slime which passes into the settler with the solution the ore in the tank has in the meantime settled very closely together by raisin raising the acri agitator during the settling and addin adding V about the same amount of boiled out solution polut on water or wash water wat or solution as has been absorbed by the ore or slime body through the orifice near the bottom of the ore or slime tank or adding such solution through the top valves from the respective tanks A A or 11 1 1 a considerable pressure is created the heavy settled ore or slime body is loosened by the downward screw like motion of the ari agitator and thus the tailings or slimes can be easily sot set in motion A clutch pulley is attached to the driving rear ear to enable the a agitator cr to be started gradually after agi agitating batin a short time the greater part of the copper is is in in solution on top of the settled ore body which is also passed to the settler beneath in the same manner as described before repeating the operation fill the ore tank with water or boiled out solution of a previous run agitate allow to settle and dischar discharge c into the wash sett lier D through the pipe 2 where plenty of time for settling about six hours is given all the available copper is thus washed out and if the 0 ore body does not require steam steaming it to recover the retained ammonia the tailings maybe may be dischar discharged ed from the opening at the bottom of the ore tank C by pipe 26 but if steaming is required pass some water into the tank start the agitator acri and pass steam from the supply pipe 18 through t the same orifice where previously water was waa passed into the tank the valve in the branch of vapor pipe 25 which leads to the top of the ore tank C is opened thus connecting the tank with the coil in the coil tank C and passing the vapors into the safety and condensation tanks B and B in a very short time all the vapors are driven from rom the tailings Z to be cooled in the coils of the coil tank C and finally absorbed by the water in the condenser ba B the ammonia solution thus obtained is used again in the operation for dissolving metals the tailings are then discharged into the yard ores so treated I 1 can then be leached beached with a cyanide solution to recover the precious preciou s metals as all the metals having a disturbing action on the cyanide compounds are arc removed or rendered innocuous also the precious preciou metals on account of the previous treatment will dissolve much more rapidly and a muc much h more concentrated cyanide solution can be employed than according to the ordinary cyanide method the sol solution ution obtained by such buch leaching is preferably treated by electrolysis tro lysis for the recovery recover of the precious metals as the concentrate concentrated d state of such a solution lution no reduces resistance |