Specification of Samuel Little Hardy : apparatus for applying chloroform vapour, &c.

  • Hardy, Samuel L. (Samuel Little), 1815-1868.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Samuel Little Hardy : apparatus for applying chloroform vapour, &c. Source: Wellcome Collection.

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    Hardy s Improved Apparatus for Applying Chloroform Vapour, dfc. kinds of conveyance pipes or tubes can be attacked near either the second sponge chamber when the elastic reservoir is not used, or near the elastic reservoir for the purpose of conveying and directing the charge therefrom to the part required. And in constructing the bellows for this purpose, I prefer to employ an air-tight casing of vulcanized india-rubber, made so as to form a 5 bellows in itself independently of the boards afterwards attached, having open¬ ings for the valves, so that the vapour may not in passing from one sponge chamber to the other come in contact with any part of the bellows excepting this interior casing. By means of this apparatus, with or without the elastic chamber or reservoir, 10 a supply of vapour of chloroform from both the sponge chambers may be applied with concentrated effect on any part desired to be affected thereby, or a whole limb or portion of the body may be surrounded by or incased in any suitable air-tight fabric confined by elastic bands, and a continuous stream of vapour may be thrown in with sufficient power to cause it to pass rapidly over 15 a large space; but being confined by the fabric or casing to the part to be fumigated or vapourized, is made to concentrate its accumulated effect upon such part. In order, however, that my Invention may be fully understood, I will proceed to describe the accompanying Drawings in which are represented the several 20 parts above referred to. Fig. 1 is a plan or horizontal view; Fig. 2 is a side elevation, the bellows being shewn open; Fig. 3 is a section taken through the line Y, Z of Fio*. 1 also shewn open. In this view the elastic chamber is omitted, and an ordinary discharge pipe substituted. Figs. 4 to 7, are various forms of conveyance 25 pipes for attaching to the apparatus. Fig. 8 shews a glass or platinum chamber, the uses of which are herein-after explained. A is the bellows; B1 and IF, chambers containing sponge charged with chloroform. The bottom of chamber B1 is perforated to allow of the admission of air when the apparatus is ready for use. When not in use the perforated 30 bottom can be piotected by a cap or other cover, which is screwed on to pi event the escape of vapour. by b, are stoppers for closing the apertures through which the sponge is inserted into the chambers B1 and B2, and keep¬ ing them air tight. C (Fig. 3) is the valve between the bellows and the second sponge chamber; D and E are screws for connecting the various 35 discharge or conveyance pipes; F is the elastic chamber or reservoir in which a quantity of vapour may be collected; / is an elastic band passing round the elastic reservoir, which by its contraction commences to expel the vapour in a continuous stream as soon as the stop-cock G is opened. This