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NOTES ON NOVELTIES.AMERICAN.A F ATENT has been taken out by Mr. L. Brumlen, of Hoboken, New Jersey, for some improve-ments in the process and apparatus for the manufacture of white lead from metallic lead, which consists in moistening the material in a suitable revolving cylinder with a solution of acetate of lead, oxidising it by the introduction of heated air, combining the oxide with heated carbonic acid by the introduction of the same, and of removing and precipitating the white lead by a solution of acetate of lead and the uncombined carbonic acid from the cylinder.Mr. T. Hiertz, of St. Louis, Missouri, in his patent for an improved Belgian zinc furnace, says that thedisadvantage of the high Belgian furnace consists in the fact that, in order to have heat enough for thereduction of the ores in the upper retorts, the lower ores were exposed to an excessive temperature,which causes the too rapid deterioration and destruction of the furnace lining and the retorts. Thepresent invention is intended to obviate these defects, and consists in the arrangement of a series of fluesin the front, rear, and side lining of the furnace for drawing in cold air near the lower part of the same,heating it up during the passage through the flues, and introducing it at about the middle of the heightof the furnace through small apertures in the lining to the interior, to mingle well and thoroughly consume the gases of combustion.The improved well auger of Mr. Robert J. Gardner, of Carlisle* Arkansas, consists in combining, with a shaft having a radially-slotted bottom and edge-turned knives, a sliding top-closed cylinder and fast ring, whereby an earth auger is formed whose cutters take off* successive shavings or thin slices of soil which are rapidly transferred into the cylinder. The latter continues to rise on the shaft until it strikes the fixed ring, when the auger is withdrawn and emptied of its contents. By this peculiar construction and combination of parts, the auger is said to do its work with singular neatness, efficiency, and economy of labour.Another auger, the patent of Mr. Washington Smith Jones, of Meridian, Missouri, has a lower borer plate, formed of two symmetrical halves of cast iron connected around the recessed part of the shaft by means of semicircular collar extensions which embrace the shaft, and are firmly attached thereto by a sleeve. The sleeve is slipped over the collars and keyed to the shaft by a cross pin. A second screw plate is attached to the shaft, at a suitable distance above the end plate being also made of symmetrical halves, and which serves mainly to take off the weight of the earth from the lower plate, and lifts a greater quantity on hoisting the auger. The detachable guide drum or band is also produced of two equal parts, constructed of V-shaped plates with collar extensions^ and applied consecutively to the various recessed parts of the shafts above the plates by a sleeve and cross pin. Strong radial arms are applied to each plate, and a semicircular band, having the same radius as that of the lower plates, is suitably and firmly connected to their ends. The ends of one half drum are provided with stationary sleeves, into which the projecting parts of the ends of the corresponding half drum fit, producing thereby on the attaching of both parts a full drum for guiding the auger in the requireddirection. The guide drum is transferred with the increasing depth of the borer plates to the upper part of the shaft, and the straight direction of the auger is easily controlled.
Newspaper Details
Iron
London, Middlesex, GB
Sat, Nov 14, 1874
Page 2
Full Page
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USA 23 Jan 2023
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