Improvements in light-bath apparatus / [Robert Otto].

  • Otto, Robert.
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in light-bath apparatus / [Robert Otto]. Source: Wellcome Collection.

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    2 N° 9596.—A.i). 1900. Robert Otto and Karl Otto’s Improvements in Light-bath Apparatus. wood. The disadvantage of these is that, in the course of time the wood warps and cracks. Nor can this disadvantage he obviated by the use of a superior and more expensive kind of wood, as the fluctuations of temperature resulting from the illumination, during the use of the apparatus are very great. According to this invention,, therefore, the walls or sides of the apparatus are 5 made of glass. An example of this apparatus will be seen on the accompanying drawing, in which Figure 1 is a vertical section and Figure 2 a horizontal section. • The walls or sides a are made of glass. The remaining parts of the casing, that is the bottom b, the cover c, and the frames d which hold the glass sides, may be made of any preferred material, wood, cast iron, or the like. 10 The frames d may for example be cast in metal and be furnished with grooves e for the introduction of the sides a, as also with joining and fixing laps f. The last mentioned are perforated in order that they may be joined by means of screws g to one another as well as with the bottom and the cover of the bathing apparatus. To the frames the electric incandescent lamps h are fixed 15 direct. A light-bath apparatus with glass sides has the following advantages. The glass sides are not affected by the great heat generated in the light bath, in other words by the change of temperature when the subsequent cooling occurs, whereby the wooden sides hitherto employed are caused to warp and crack, 20 a drawback that is avoided with glass sides. Glass sides can be kept quite clean and antiseptically purified, as damp and infectious matter can never penetrate glass and settle therein. This is an important advantage as compared with the porous wooden sides. Glass sides with a suitable coating at once form the indispensably necessary mirrors or reflectors for the light-bath, which otherwise 25 would have to be inserted specially. Consequently the light-bath apparatus with glass sides can be produced more cheaply. Having now particularly described and ascertained the nature of our said invention and in wdiat manner the same is to be performed, we declare that what we claim is : —- 30 A liglit-bath apparatus so characterised that the walls or sides a are made of glass. Dated this 24th day of January. 1901. WHEATLEY & MACKENZIE 40 Chancery Lane, London, W.C. Agents. 35 Uedhill: Printed for His Majesty^s Stationery Office, by Malcomson & Co., Ltd.—1901.