Considerations on the medicinal use of factitious airs and on the manner of obtaining them / [Thomas Beddoes].

  • Thomas Beddoes
Date:
[1794?]-1796
Catalogue details

Licence: Public Domain Mark

Credit: Considerations on the medicinal use of factitious airs and on the manner of obtaining them / [Thomas Beddoes]. Source: Wellcome Collection.

    57/564 page 3
    Descriprion of an Apparatus for procuring various kinds of Air, for MEDICINAL purpofes. oD 0 (SEER) (01 G00 HE apparatus confifts of an alembic, or pot (A) and its capital (B). The latter is connetted bya pipe (F) with the refrigeratory or wafhing veffel (G), which again communicates by a pipe with the Hydraulic Bellows (H. J.) which receives the’air as it is generated or produced, and transfers it into oiled filk bags, or other veffels, from which it may be:conveniently inhaled by the patient, 7 : _ ~The pot (A) is made of foft caft iron, of the form in the drawing, and is about fix inches diameter in its widett part or d2lge; the thicknefs of the metal about half aninch. The lower part of the capital (B) is made co- nical, and ground into the mouth of the pot, fo that it may be made tight with a {mall quantity of cement. Aa iron tube, half an inch infide diameter, paffes perpendi- cularly through the centre of the capital, and reaches within half an inch of the bottom of the pot. This tube is continued four or five inches above the capital, where it ends with a conical mouth at (C). It is fitted into the capital by a conical {welling, which is ground into a cor- refpondent hole, and made tight with cement. Another tube (D C), made conical at its lower end, is fitted into the conical mouth (C) of the lower tube. The lower end of the tube (D C) is contra@ed fo as to form a hole of about 1-20th inch diameter, which is capable of being {topt or fhut by the end of the wire (E), which is fitted to it. This tube is one faot long, and has a cup or bafon at its upperend. The wire (E) is formed intoa fine threaded {crew at the upper end, and is {crewed through a bridge in the cup, fo that by turning the wire, it may open or fhut the hole at the bottom ‘of the tube, as occa- fion requires. The proper taper, for thefe fevera] cones, is about one in eight (that is, for every inch they are long, they fhould be 1-8th of an-inch léfs in diame; ter at the {maller than at the largerend), A2 . ‘In
    digitised image 1
    digitised image 2
    digitised image 3