Joseph T Clover
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Down-draught Dilutor

Picture
Clover's last invention was never finished although he discussed it in this paper which he presented in 1881 entitled "On Apparatus for giving Anaesthetics with precision". 

"I now show an apparatus called the Down-draught Dilutor, which is new in principle, inasmuch as it utilizes the weight of the anaesthetic vapour as a moving power, and as a means of keeping up a uniform mixture of anaesthetic atmosphere, according to the adjustment of the instrument...

I regret that it is not so complete that I can at once advise its adoption in practice. I have arranged one - but it is not quite completed - which is carried by the administrator, and requires no table or bed to support it."
(1)

1.         Clover JT. On Apparatus for giving Anaesthetics with precision. Transactions of the International Medical Congress Seventh Session held in London, August 2nd-9th, 1881. 1881;II:390-2.



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Picture
Drawings for the down draft inhaler. From the Wellcome Library Collection. MS 5461
Picture
Drawings for the down draft inhaler. From the Wellcome Library Collection. MS 5461