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its edge. A current of water may flow through the apparatus. L is a Whelpley and Storer's mill. It has a series of beaters m m which revolve in a casing and dash to pieces the blocks of copper ore which are placed in the hopper o and fed by the corrugated roller. A suction draft from the fan n removes the stuff when it is beaten into dust. M has a wheel with hammers revolving a case with interior corrugations. A fan on the disk face of the wheel drives out the powdered ore. N is Howell and Hannay's machine for crushing quartz, bones, etc., by the percussive force of the rotating projector or by the impingement of the material against the inside of the case. O is a form of the Blake crusher, in which the lower end of the moving jaw rests against the anti-friction roller, and its upper end receives motion by a cam turning in the rectangular opening. The concave faces of the jaws are thus made to roll together with a slight but powerful movement. See also Fig. 3417. F
, 1860. 27,412PaineMar. 6, 1860. 31,805HicksMar. 26, 1861. 32,517HowellJune 11, 1861. 43,514MackJuly 12, 1864. 43,705PhelpsAug. 2, 1864. 5,715Blake et al.Oct. 11, 1859. 26,207SerrellNov. 22, 1859. 27.805HowellApr. 10, 1860. 28,889MitchellJune 26, 1860. 31,602HowellMar. 5, 18HowellMar. 5, 1861. 31,645MarshMar. 5, 1861. 31,878DownerApr. 2, 1861. 32,035WhitcombApr. 9, 1861. 32,519JenksJune 11, 1861. 32,710PaddockJuly 23, 1861. 92,692BartlesonJuly 20, 1869. 96,180YeutzerOct. 26, 1869. 96,809HowellNov. 16, 1869. 96,901EnlassNov. 16, 1869. 101,147MorehouseMar. 22,. 29, 1873. 138,638Goodrich et al.May 6, 1873. (Reissue.)5,414HowellMay 20, 1873. 141,576McMillanAug. 5, 1873. 141,933CaswellAug. 19, ,129WilcoxMay 21, 1872. 129,998Warren et al.July 30, 1872. 131,614HowellSept. 24, 1872. 133,760Cleveland et al.Dec. 10, 1872. 134,526Duntosion into wrought-iron by puddling, etc. See casting; puddling. Howell's furnace for making malleable iron direct from the ore with stone
d prevents it from burning. One pipe conveys in the water, and another carries away the steam. Where water is abundant, a stream is run continually through it. In Mackenzie and Isbell's cupola-furnace, separate blastcham-bers are arranged in a vertical series around the cupola, receive air by valved branch-pipes from the main, and communicate by distinct rows of tuyeres with the interior. Tuyeres in different positions around the furnace, and at different elevations, are described in Howell's United States patent for making malleable iron direct from the ore. a, negro-head tuyere. b, bull's-eye tuyere. c, duck's-nest tuyere. d are the air-supply pipes for the tuyeres of a hot-blast furnace. They are convoluted, so that the air in its passage through them is longer exposed to the action of the fire, and becomes more thoroughly heated. Forge-tuyeres. Tweed. (Fabric.) A light, twilled woolen fabric for men's wear, with an unfinished surface. Two colors ar