PATENTS OF INTEREST TO CHEMISTS. EDITEDBY
ALREKT
H
WELLES
Ore S e p n r d o v s , etc.-508,679, November 14, Carter, C., stamp mill ant1 ainalgamator. 508,008, November 7, Gelien, G. A , , ore grinder. 508,542, November 14, Greer, R . C., ore roasting furnace. 508,381, November 7, Giroux, J. I,., smelting furnace. 509,450, November 28, Rushforth, A. P., cupola or blast furnace. 509,439, November 28, h k c e , G. A.,lime-kiln. 509,550, November 28, Nickerson, T. K.,lime-kiln. 508,282, November 7, Clancy, W., apparatus for screening and concentrating ores. 509,818, Xovemher 28, Lockhart, W. S., washing and separating minerals, jigging apparatus. Gold and Silz~er.-50g,z8g, November 2 1 . Bohm, W. D., apparatus for separation of gold from ores. 509,368, November 28, Engelhardt, E. C., treatment of ores; bromine, hydrochloric acid, and sodium carbonate are reagents used. Lend.-508,115, November 7, Noad, J., white lead and colored pigments; float lead is treated with a solution of glycerol and acetic acid and carbon dioxide is admitted. 509r057, November 2 1 , Waller, E., white lead; native lead carbonate heated with ammonium acetate solution is distilled, ammonium carbonate is condensed, and solutions of this and lead acetate are mixed. 509,058, November 21,Waller, E., and Sniffin, C. A.; argentiferous lead carbonate ores are concentrated by dissolving lead in acetic acid and boiling neutral acetate solution to convert into basic lead acetate, while silver is concentrated in t h e insoluble residue. 509,059, November 2 1 , Waller, E., and Hinman, B. C.; white lead is precipitated from a basic lead acetate solution by dissolving carbon dioxide in water under pressure and forcing basic acetate into tanks. Coppev.-509,619, November 28, Helbig, P., hardening copper; meltetl copper is treated with glass and subcarbonate of iron and antimony is added. 509,633-634, Noveiriber 28, Tuttle, D. K.,and Whitehead, C.; slimes from refined copper are treated with dilute acid then with sulphuric acid or silver sulphate. .41ii7~inuin.-508,796, November 14, Ackerman, W., a l u m i n u m fluoride; aluminum silicate is treated with hydrofluoric acid. Airtimoiry.-5og,478, November 28, Mayer, T.; antimony oxide is dissolving in thirty-three per cent. hydrochloric acid and sixty-se;en per cent. hydrofluoric acid and an alkali sulphate is added forming zSbF,, M,SO,, readily soluble in water. Acids a n d Alkalies.-509,664, November 2 8 , Howard, H., automatic regulator for concentrating sulphuric acid. 508,804, November 14, Blackmore, H. s.,electrolysis of salts of alkalies. 508,915, November 21, Cardozo, D. P. F . , manufacture of salt; jets of air are forced into brine to concentrate i t , t h e liquid is t h e n transferred to another tank to deposit im-
PATESTS O F I N T E R E S T TO C m B r I s T s .
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purities, and then t o a thirtl tank a n d eyaporated !jy air. 508,241, h’oveniher 7, Richardson, J . C . . c?lectrolytic apparatus for t h e fixed caustic alkalies from sodium and potassium chlorides. 509,163, Sovetxiher 2 1 , Ilelmer, N., ozone; prepared h y atltling hytlrogen perositle t o a potassium carbonate solution . I ” c v t ~ l ~ ~ e v s . - ~ o 8 , ~Noverri1)er ~0, 7 , I >reenstreet,C. J , ; nitrogenous fertilizer; tank water or stock is combineti \vith a salt of manganese or iron. Snnitaty C / i e i i z ~ ~ f ~ ~ . - 5 0 9 , 5 6S0o,v e n i l ~ e r2 8 . Sprague. 21. Y , M.. sterilizing apparatus. iZrea,iii,y ~7ud/ ) i s t j l / i 7 i ~ . - 5 0 8 , 8 8 2 , Soveni1)er 14, IIoriibostrl, C.; fermented and distilled liquors art> treated \\ ith kieselguhr. 508,913, November 2 1 Rurkhardt, A . G . , app;iratus !‘or [iistilling and rectifying. h’[evc/zing niid (?lfeii/,f.--508,261, Soveni1)er 7 , \Veldon. I < . , apparatus appr:i:us for 1)leaching for dyeing. 507,995, Soveriilwr 7 , Clcgg. C . T., a n d dyeing. 509,431, Sovemljer 2 8 . Graerniger. A . 311d J . . apparatus for dyeing. 508,592, Sovemlier 14, ;lusten. I>. T . , friable coloring matter ohtaineti from clye-wuo~lextracts by incorporating ainnioiiiiiiri (.arbonate. 509,703, 9ovenil)er 2 s . Taylor. I., es!r:ic‘t from recl-wooil t r e r 11y treating with water and caustic alkali, neutralizing aiid precipitating solid matters. 509,635. Soveinher 28, Ylricli, 31 ., ant1 Ilaniniann, J.. k)rown tetrazo dye. 509,623, Sovern1it.r zS, Lanch. K . . 1)rowti d y e , C , !€X!lS,vO,i;made l)y treating with nitrous acitl t h e coinpound resulting froin artion of diazotized amido hytlrox!- carbonic aci[l o n rcsorcinol. or orcinol. ;mi2ni~/,~~.--508.281, Soveinher 7 s Chitill> , 1:. , taiining a p p r a t u s . t 7 i ~ ~ ~ i z 7 i i c ~ ~ ~ l / / l ) @ / ~ N ( ~ . S . To\,enil)er - 5 0 9 , 0 8 7 . 2 I , hIajcrt.\\‘.. piperazinc. 509. 055, Sovertil)er 2 1 . Thonis, I I . , saiiL~yla!r. of cirthotolxl tliriit.thylpyrazoIon, c , ? € r , ~ s ~ ” , C ~ r 509,520, ~ , , ( ~ , , Soveirilier r S , Fritscli, I’aul. salicylic ester of acetol: n i ~ t l eby lientiiig a salicylate of an alkali an(1 iiionohalogen acetone a n d separating t h c alkalii!e chloritic. from acetol forrncil. 508,124, Sovetli1)cr ;, Turgard. 1-1. I ) . , tleiiitriitiiix nitro-cellulose 1)y itiiniersing in anirnonium hydrosulphate ; i n i i :i nictnllic sulpliitle. Su,ynv.-5og,74g, Xoveiiiher 2 s . Jforrcll, J . h.,process of atid apparatus for evaporating cane juice. 508,747, Sovernher ZJ, l’ellegrini, J . E., syuthetic sugar: four parts of c:trl)oii (lioxide. four parts of t~thylene,and three parts of kvater are uniteit liy o ~ ~ i i o ~ c . Oils ~zud I ;rt~r/i./2r..s.-508,479, ~ O l - ~ l l l i J < ’1.1, r Kayser, .I.,liytlrocarbon oils arc deotlorized h y treating !lriecl vxpors with anhydrous iiitric acitl. Pl(nsy~*~, uiid ( i . / , / ~ ~ i / ( . - 5 0 8 , 0 3 3 ,~O\.elillJcr;, JIohlc, .I.. xrtificial stone; sulphuretted
