An international system of electro-therapeutics : for students, general practitioners, and specialists . espectively joined to the inner and outer coatings of a laigeLeyden jar, the discharges take place with short, loud sparks of greatbrilliancy. If from any cause the machine does not at once charge itself,gently rub with a silk handkerchief either of the ebonite pillars. Professor Lewandowski claims that his machine, differing in its con-struction from all hitherto-known influence machines, answers the thera-peutists purpose better than any other ; the merits claimed for it beingthat it is u
An international system of electro-therapeutics : for students, general practitioners, and specialists . espectively joined to the inner and outer coatings of a laigeLeyden jar, the discharges take place with short, loud sparks of greatbrilliancy. If from any cause the machine does not at once charge itself,gently rub with a silk handkerchief either of the ebonite pillars. Professor Lewandowski claims that his machine, differing in its con-struction from all hitherto-known influence machines, answers the thera-peutists purpose better than any other ; the merits claimed for it beingthat it is uninfluenced by moisture and temperature, as the generating A-104 McCLURE. part of the machine is inclosed in a cylinder. The following figure repre-sents the machine, and the principle of this contrivance consists in theemployment of two hollow drums of idio-electric bodies, of which one issomewhat smaller than the other and is shut up perfectly air-tight withinthe others; both rotate round the same axis, though in different direc-tions. The two vertical iron supports, aa^ and 66i,are screwed to the. Fig. 4.—Frofessou Lewandowskis Machine. rectangular wooden frame Ba and Ba^, seventy by fifty centimetres, theirtops being joined together by the vulcanite rod, a h. These two uprightssupport the axles, e/, W, and TFj, which are parallel to each other. Theaxle, e/, is fixed and made of steel. Upon the chief axle, e/, there aretwo vulcanite collars, one of which is joined to the pulley, r, and theother to the pulley, Vy. In the middle of the two collais there are, on thechief axle, two hard-gum cylinders, one within the other, T^ T^ (Fig. 5). STATIC ELECTRICITY AND MAGNETISM. A-105 The pulley r is connected with the internal cylinder, T^ ; whereas thepulley r^ is connected with the external cylinder, T; so that the internalcylinder and the external one can be rotated quite independentl}^The two lower axles, TFand PF^, each <MiYvy a large pulley, R and R^^and a toothed wheel; th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectuterus, bookyear1894
