Specification of Auguste Edouard Loradoux Bellford : apparatus for inhaling iodine.

  • Bellford, Auguste Edouard Loradoux.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Auguste Edouard Loradoux Bellford : apparatus for inhaling iodine. Source: Wellcome Collection.

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    Bell ford's Improvements in Apparatus for Inhaling Iodine. stopper/. A scale is engraved on tlie glass of the tube, as seen in Fig. 1, bis*. Each division of this scale corresponds to a precise quantity of iodine, (a centigramme, for instance). To effect this division on the tube is drawn the width of a cylinder of iodine, of homogeneous density, weighing a certain number of centigrammes. 5 The space comprised is then subdivided into as many equal parts as there are units required, consequently each division represents a certain weight, according to the division effected. When the cylinders of iodine are arranged in the gauge tube f i, 5, whose opening is exactly closed by the stopper, if the lips be applied to e, 10 and a suction made with the mouth, the air circulating through the inhaling tube turns into vapour the lower part of the small cylinder, which, undermined at its base, descends in proportion as new parts are subtracted from it. This evaporation of the iodine in the air is still more rapid if the lower part of the apparatus be warmed with 15 the hand or otherwise. The scale traced upon the glass makes it convenient to measure at any moment the space occupied by the iodine, and thereby to ascertain the quantity absorbed. AVhen it is required to introduce into the lungs or other organs air or other gases much charged with iodine vapour, the apparatus No. 2, is 20 used; and, instead of being warmed with the hand or otherwise, the iodine is kept at the temperature of the circulating air; but care is taken to warm the air intended to convey it. This inhaling apparatus is composed, First, of the space D, wdiose capillary tube I, receives the iodine 25 in small cylinders, which are made to move by means of a platinum piston J. This capillary tube bears a graduated scale, whose starting point is indicated at its upper part by a circular line. The middle part of this space receives a curved stem E, of glass or any other unalterable material, by which the vapour of iodine is exhausted. 30 The opening of this space is closed by an-air tight tube N, M, ter¬ minating in a point at M, and funnel shaped at N. The point M, is intended to direct the air to the higher part of the iodine. The funnel or opening receives a stopper or cock y, to which is fitted a curved tube at right angles, r. The horizontal part of this tube 35