PATENTS. J U N E 3, 1902. 701,802. James A.Denton and James H. Freas, Johnson City, Tenn. Assignor to Elliott C. Kirkpatrick, same place. Smokeless powder. Potassium chlorate, 16,and linseed oil, 8, are mixed and ground, then wheat flour, 2, chrome yellow, I , and water enough to make a stiff dough are added, and the mass dried and ground or granulated. 701,804. Thomas A. Edison. Reversible galvanic battery. Hollow nickel plates, hydrated lower oxides of nickel or cobalt and graphite, potassium hydroxide for one element and electrolyte. For the other element ferrous sulphide converted t o ferrous oxide, or cadmium, also mixed with graphite.
JUXE I O , 1902.
701,995. John A . Burgess, Bradford, Canada. Purifying acetylene gas. Passes the condensed gas over charcoal treated with a solution of metallic salt as ferric sulphate, then through calcium carbide and through a chamber filled with lava pieces, and repeats the last two steps. 702,oog. Frederick G. Jordan, Spokane, Wash. Making cement. Burns lime and while incaiidescent mixes in a silicious clay, puts mixture in an air-tight chamber, adds sodium silicate and steam, stirs, molds, burns and grinds. 702,047. Caleb G. Collins, \iToodmere, S.Y. Assignor t o Calvin Amory Stevens, Kew York, W . U. Rendering metallic sulphides soluble. Crushes the material, drenches it with ammonia and drains off the excess, exposes to air or oxygen, leaches the ore, and repeats till all the metal is extracted. 702,ojo. Asahel K . Eaton, Brooklyn, N. Y. Removing scale from iron. Immerses in a bath containing stannous sulphate and sodium bisulphate. 702,126. Phillippe Chuit and Fritz Bachofen, Geneva, Switzerland. Assignors to Chuit Naef & Co., same place. Making alpha ionone. Reacts with syrupy phosphoric acid on pseudoionone at a low temperature, adds sodium sulphite and sodium and ammonium chlorides which precipitate sodium sulphonate of alpha-ionone, which is decomposed by caustic soda and distilled by steam. 702,140. Geoffrey LeRoi de Lencheres, Vierzoii, France. Artificial stone. Clay, 6 j ; silica, 4; manganese dioxide, 6 ; lime and barium sulphates, 2-3 per cent., a hydrocarbon and gravel to a suitable consistency. 7 0 ? , ! 5 3 . Jarig P. Van der Ploeg, The Hague, Netherlands. Obtaining Antimony. Pulverizes the ore, mixes with an alka-
Patents.
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line sulphide and water to dissolve out double sulphides for use as the best form of electrolytes, electrolyzing the solution and using the liquor over again for dissolving fresh material. 702,162. Alexander Straus, New York, N. Y. Making a sponge substitute. Mixes sulphurized rubber with paraffin and water, heats it whereby cells are formed by the steam, and the rubber is vulcanized. 702,171. Augustus Bischler, Basle, Switzerland. Assignor to Basle Chemical Works, same place. Making phthalic and benzoic acids. Heats above zooo C. a mixture of naphthalene derivatives as naphthol with a metallic oxide as copper oxide, and an alkali. 702,172-3-4-5-6-7-8. All to William N . Blakeman, New York, N. Y. Paints. Mixes cotton-seed oil and zinc oxide equal parts, and a drier. May add manganese oxide, paraffin wax, or lead acetate before drying and grinding. 702,244. Andrew J . Polmeteer, Whitehall, Mont. Assignor to Joseph Mitch and Alberta G. Dygart, Butte, Mont. Precipitant for copper water. A solution of calcium sulphide with an excess of calcium hydroxide. 702,258. Clarence W. Taylor, Sioux City, Iowa. Bunsen burner. T h e burner tube is made with corrugations forming gas passages, with a plate to regulate the supply of both air and gas. 702,305. Edward D. Kendall, Brooklyn, N. Y. Extracting precious metals. Leaches them with a solution of a cyanide and a percarbonate of alkali. 702,357. Hans Von Dahmen, Vienna, Austria-Hungary. Detonating composition. Copper-ammonium nitrate 30 to 40, potassium nitrate the same, sulphur I O to 7, and aluminum 18 to 28 parts. 702,369. Carl Levinstein and Carl Mensching, Manchester, England. Assignors to Levinstein limited , same place. Black sulphur dye. Heats diluted nitrophenols with oxyazo benzene, an alkaline sulphide and sulphur. T h e dye is soluble in concentrated sulphuric acid and is precipitated therefrom by water. JUNE 17, 1902. 702,445. Martin Lange and Tadensz Emilewicz, Amsterdam, I , 8-dihydroxynaphthalene is Netherlands. Mordant colors. condensed with a substance containing the carboxylic radical, whereby said radical is bound to the nucleus of the I ,8,dihydroxynaphthalene, forming a yellow dye. 702,s 54. Louise C. Henriot, Rheims, France, Photographic plate. T h e plates are first coated with albumin and potassium silicate, then mercuric nitrate and potassium bromide are dis-
60
Review of American Chemical Research.
solved in gelatin, and nitric acid added until a milky white substance is formed, with which the plate is coated, the reaction producing mercuric bromide and potassium bichromate. 702,566. Edinund Knecht, hlanchester, England. Reserve and discharge on textile fabrics. Treats dyed goods with a titanous salt in a suitable medium adapted to dissolve i t . 702,571. Jerome Loiselet, Assignor to SocietC des Produits Amylaces, Paris, France. Subjects starchy material to ail acid solution, washes and grinds it, purifies by washing on an inclined plane, dilutes and electrolyzes, removes the organic precipitate from the mass, purifies again on inclined planes, dilutes and dries. 702,582. James W. Xeill and Joachini H. Burfeind, Salt Lake City, Utah. Recovering metals from ores. Agitates a charge of copper pulp by forcing through it sulphurous acid gas, filters off the pulp, adds a suitable reagent to the filtrate to precipitate the copper, which also liberates sulphurous acid gas that is mixed with gas from the roasters to agitate more pulp. 702,61 I . Oskar H . Anderson, Stockholm, Sweden. Assignor to Silicate Brick Syndicate, Montreal, Canada. Artificial stone. Mixes sand 95 with a mixture of red hot sand and slaked lime five parts, moistens with dilute hydrochloric acid, molds into bricks, put these in a chamber also containing, separate from the bricks, lime to be slaked, and admitting steam at 100 pounds pressure whereby the bricks are dried and the lime slaked. 702,678. William Franipolini, Sail Luis Potosi, Mexico. COmposition for rubber. Mixes the gum of Spnantheras Mexicanas with sulphur, and treats the iiiixture with heat arid pressure. 702,693. Rudolph F. Bartle, Falls Church, Va.3 and Albert B. Hoen, Baltimore, Md. Designs on metal surfaces. Mixes a mordant with gelatin, forms n design therewith on a flexible sheet, presses it 011 a metallic surface, heats the plate and finally applies a bath of a liquid carbon compound as benzene. 702,713-4. Henry B. Febiger, Philadelphia, Pa. Apparatus and process of extinguishing fires. Supplies to a closed conipartment a liquefied gas not a supporter of combustion, as sulphur dioside, vaporizes the gas, and withdraws it, iiiises it Ivith fresh gas and returns i t , thereby cooling the compartment. 702,730. Benno Homolka, Frankfort on-Main, Germany. Assignor to Meister Lucius und Bruning, Hochst-on- Main, Germany. Purifying indigo. Extracts the ran' indigo with pvridine bases. 702,764. Jules L. Babe, and Alexis Tricart, Paris, France. Extracting zinc. Makes briquettes of poor zinc ore, sodium carbonate and carbon, heats them till the zinc is volatilized and
Patents.
61
driven off, condensing the vapors containing zinc oxide, mixing this product with sodium carbonate and carbon, again volatilizing the zinc and collecting it. 702,855, Frank R. Felt, Chicago, Ill. Assignor to Merritt Greene, Marshalltown, Iowa. Retort for obtaining oxygen from air and steam. T h e combination with the outer wall of partitions forming oxidizing and deoxidizing chambers, a series of compartments in each chamber opening alternately into the top and bottom of each chamber, the last oxidizing chamber open at the top, a supply chamber opening near the bottom into the first deoxidizing compartment, an opening near the bottom of the last deoxidizing compartment into the first oxidizing compartment, a series of air pipes in the oxidizing chamber and steam pipes in the deoxidizing chamber, said pipes terminating in an upward direction in the lower parts of the compartments that open near the top into the next succeeding compartment and the oxidizing and deoxidizing chambers being provided respectively with means for the escape of the nitrogen and withdrawal of oxygen. 702,864. Washington, L. Albee, Buffalo, N. Y. Assignor one-half to Schoellkopf Co., same place. Preparing skins for tanning. Mixes sodium sulphide, sodium bicarbonate and borax in solution for steeping the skins, then agitates them in a similar mixture with caustic soda in place of borax, then agitates them in sodium bicarbonates and borax alone. 702,877. Theodor Meyer, Buergel, Germany. Assignor to K. Oehler, Anilin Farben Fabrik, Offenbach on-Main, Germany. Making hydrogen chloride and sodium sulphate. Pulverizes and mixes in equimolecular proportions salt and sodium bisulphate and heats in a closed vessel to a temperature of 400' C. JUNE 24, 1902. 702,943, Gustave Guiraud, Cripple Creek, Colo. Assignor to Robert McKnight, Philadelphia, Pa. Treating silicate ores. Roasts and stirs in free air a charge of ore, an oxygen compound of silicon, and a haloid salt of an alkali or alkaline earth metal, the quantities being proportioned to form a stable silicate and a haloid of a precious metal which is volatilized and collected. 702,996. W-ladyslaw Pruszkowski, Schnodnica, Austria. Alloy. One atomic weight of aluminum with two atomic weights of any metals of the iron group as nickel and iron, and adding a metal of the chromium group as chromium. Claims an alloy containing Fe,AlNi,,AI,,. 703,058. Seward F. Gray, Titusville, Fla. A tanning agent. Separates the red and white parts of the roots of the saw palmetto, squeezes the juice out separately, allows a precipitate to settle from the clear portion which is racked off and concentrated in zlacuo. May use it for dyeing.
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Review of American Ckemical Research,
703,064. Louis Hicks, Englewood, N. J . Mantle for incandescent gas light. Made of oxide of thorium and of yttrium, the former in large amount and oxide of cerium in small amount. Lanthanum may supplant thorium. 703,096. Otto C. Strecler, Darnistadt, Germany. Preparing lithographic plates. A nietal plate with a lithographic design or transfer is coated with a solution of salts as ammonium fluoride whose acids form insoluble coinpounds with the metal and an oxidizing means as aiiinionium nitrate with an acid which does not decompose the insoluble salts formed or set an acid free, but forms an insoluble hygroscopic layer firnily adherent to the metal. 703,104. Edgar IT'edekind, Tubingen, Germany. Chlorinated methyl ether of menthol. Has the formula C,,H,,OCH,Cl, a yellow oily liquid of peculiar pungent odor, specific gravity about 0.982 I , insoluble in water and alcohol, soluble in ether and chloroform. 703,I 05. Arthur Weinberg, Frankfort-on-Main, Germany. Assignor to Leopold Cassella and Co., same place. Dye. Coinbines$-diazonitro o-chlorbenzene with I ,8-dihydroxynaphthalene g,6-disulphonic acid, reducing the nitro-group and alkylating the conipound. Soluble in water blue, turned to claret by alkalies and precipitated by acids in red flakes, dyeing wool fast blue shades. 703,135. Isidor Kitsee, Philadelphia, Pa. Insulating conductor. Coats wire with a solution of cellulose, dries and coats witli a spray of sulphur, then vulcanizes. 7 0 3 ~I j I . Theodore G. Pause, Atlanta, Ga. Artificial fabric. Treats sheets of burlap with a solution of magnesiam chloride, calcined magnesite and a niineral powder as sand, then repeats nit11 the same to which sawdust and silica are added. then sizes the surface with soap and polishes. jo\?,I 6 j . Thomas Tvvynam, Moortovvii, England. Separating tin from metals. Mixes a solution of sodium chloride with carbon dust, dips the scrap or cuttings therein, and exposes to air, washes and recovers the tin oxide. 703,19h. John .A. Heany, Philadelphia, Pa. Assignor to "eater-Heany Developing Co., same place. Insulated wire. Coated with asbestos, sodiuiii silicate and nianganese oxide. May coat again with silicate and press on the mineral powders. 703,198-9-200-1. John A . Heany. Assignor to the "eaterHeany, I)evc.lopiiig Co., all of Philadelphia, Pa. Insulating wire, and conipositioii therefor. Mixes lime with albumin for the first coating, tlieu applies a mixture of sulphates of aniiiionia and soda, chlorides of same, boracic acid and water, theu compresses asbestos therein, and covers that with a fire- and water-proof enamel consisting of a mixture of the two compounds previously used. 117. H. S E S M A N .
