US740873A - Apparatus for treating skin diseases, &c. - Google Patents

Description

No. 740,873. PATENTBD OCT. 6, 1903. J. KJELDSEN. APPARATUS POR TRBATINGSKIN DISEASES, Sw.. Brummen Hmm 00T. 2a, 1900.A

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J. KJELDSBN. APPARATUS FOR- TRBATING SKIN DISEASES, &o.

APPLICATION FILED 00T. 23, i900.

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UNiTnD STATESPATENTLQrrion .IAKOB KJ-ELDSEN, OF COPENHAGEN, DENMARK.

APPARATUS `FOR -TREATING SKIN DISEASES, 81.0.y

SPECIFICATION forming part of Letters Patent No. 740,878, dated October 6, 1903.

Application led October Z3, 1900. Serial No. 84,102. (No model.)

To ad whom it may concern:

Be it known that I, JAKOBKJELDSEN, of Copenhagen, in the Kingdom of Denmark, have invented a new and Improved Apparatus for Treating Skin Diseases, duc., of which the following; is a full, clear, and exact specitication. y,

In medicine, applied chemistry, and for many other technical purposesthe chemical rays of electrical lamps have been largely used. In the therapeutical, the telegraphical, and the photographical world especially considerable practical use has been made of these rays--for instance, in light-printing and photographic establishments, hospitals for the treatment-of certain skin diseases, dec. Immense arc-lamps whose rays expand over the whole normal spectrum are usually used. In some cases (lupus, dsc.) the disadvantageons eiect of the red and ultra-red rays is usually avoided by passing the rays through water to which different colors are added. .In similar ways the other parts of the spectrum can be absorbed. By the processes now used the light, however, still contains a considerable part of these detrimental (for the purpose in question) parts of the spectrum. It is easy to understand that by these lamps considerable more energy is required than is really rendered effective. Generally only onefifth of the total energy of the lamp is utilized. -For this reason such lamps are most unprotitable to use for such purposes. These lamps are also expensive to construct and require complicated telescopic apparatuses and refrigerating means for focusing and cooling the rays. Besides this it is necessary in therapentical science to keep the part of the skin treated cool by irrigation with cold water on account of the heat rays, of which the light contains a considerable part. This is often very disagreeable forthe patient. These drawbacks are the reason why the chemical rays are much less used than would be the case under more economical circumstances.

My invention relates to apparatus for treating skin diseases, &c.,by chemical rays in such away that all the above-mentioned objections are obviated.

The special feature in my invention consists in using electric-arc lamps provided withv electrodes which wholly consist of metals telegraphic purposes, tbc.

whose illuminating-vapors form a linear spectrum of YWholly or about wholly chemical rays which are speciall y adapted for the treatment of skin diseases, for photographic and As specially suitable electrodes may be mentioned electrodes made of iron, aluminium, mercury, silver, tin, lead, copper, zinc, dic. To prevent the melting of these metallic electrodes, they maybe cooled in the usual way. The electrodes are conned in a suitable chamber or casing provided with plates or lenses formed of materials which will readily permit the passage of the ultra-violet rays-for instance, rock-crystal. The rays pass through the'windows or lenses of the casing to the object to be treated.

The accompanying drawings show in Figures l and 2 a diagram of two specimens of such lamps. Fig. 3 shows a lamp complete,the view illustrating the application of the rays to the arm of a patient. Fig. 4 shows a modication in the arrangement of the rock-crystal lens. Fig. 5 shows alamp in which one of the electrodes consists of mercury, and Fig. 6 shows the electrodes and the lens without a casing.

In Fig. l, a is the lamp; c, one of the elec trodes,`which is formed like a bar, for instance, of iron and surrounded by a cylinder b. d is a receptacle containingr the other electrode, which may consist of mercury. m5 indicates the Window or lens through which the rays pass.

In Fig. 2 both electrodes c andiare hollow bodies. The electrode c isv shown with a screwed cap c', which can be easily changed if it should be burned.

In Fig. 3, a. represents the lamp which contains the metallic-electrodes, the lamp being provided with a handle. m is the rock-crystal lens for directing the rays upon the part of the body to be treated.

In Fig. 4 the lens m instead yot being attached to the lamp is shown attachedl to th part of the bodyV to be treated. f

In Fig. 5 the lamp-casing contains the electrodes c d", one of the electrodes d consisting of mercury. At one side of the casing is a telescopic rock-crystal lens m2 and at the other side two lenses m3 m3, with a spacem between.

In Fig. 6 the casing is omitted. c2 and d2 ICG represent the electrodes. Z is a support for the electrode c2, and m4 is the rock-crystal lens, suitably supported.

By my apparatus the greatest possible number of skin-curing rays is obtained for a certain strength of the electric current, the metallic electrodes being much richer in rays of the violet part of the spectrum than are electrodes of carbon and the rays from the electrodes passing through a material which permits all the Violet rays to pass undisturbed.

The experiments which 1 have made show that the consumption of electric energy in my lamps is diminished ninety per cent. in comparison with the lamps now in use. My lamps have, further, a photochemical action of a proportion of forty to one compared with the usual lamps. The proportion Varies in accordance with the sorts of metal which are used.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. Apparatus for treating skin diseases, comprising an electric circuit, metallic electrodes included in said circuit and between which an arc is produced showing a linear spectrum consisting essentially of chemical v rays, the apparatus being arranged to direct the said rays upon the object to be treated, as set forth.

2. Apparatus for treating skin diseases, comprising an electric circuit including an arc-lamp both electrodes of which consist of metal, whereby the arc forms a linear spectrum, and a plate or lens formed of material readily penetrable by the rays and through which they pass to the object to be treated, as set forth.

3. Apparatus for treating skin diseases, comprising au electric circuit provided With metallic electrodes between which an are is produced, and a rock-crystal lens through which the rays pass to the object to be treated, as set forth.

4. Apparatus for treating skin diseases comprising an arc-lamp, having metallic electrodes, thereby producing essentially chemical rays, and a casing surrounding the arc and provided with a lens or Window formed of material easily penetrable by the chemical rays, as set forth.

5. Apparatus for treating skin diseases comprising an arc-lamp having metallic electrodes, a casing surrounding the arc, and rock-crystal Windows in said casing through which the rays pass, thereby forming a linear spectrum with a surplus of rays in the violet part of the spectrum, as set forth.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

JAK'oB KJELDSEN.

Witnesses:

CHARLES HUDE, J. C. JACoBsEN.

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