Description and use of a patent medical electrical machine, made by Thomas Blunt, (late Nairne and Blunt), optician and mathematical instrument maker to His Majesty, 22, Cornhill / [Thomas Blunt].

  • Blunt, Thomas
Date:
1807
Catalogue details

Licence: Public Domain Mark

Credit: Description and use of a patent medical electrical machine, made by Thomas Blunt, (late Nairne and Blunt), optician and mathematical instrument maker to His Majesty, 22, Cornhill / [Thomas Blunt]. Source: Wellcome Collection.

    19/34 (page 11)
    friction is kept up between the cylinder and the rubber, as has been directed. To obtain a regular action from the negative conductor, (i. e. to keep it continually so much rarefied, as to be able to disturb the fluid on any other body containing only its natural quantity,) we must, in the first place, insulate it, by taking off the chain hung from it, thereby confining its action to the body which may be applied to it, and hang the chain to the positive conductor, which will then convey to the earth the fluid ex¬ hausted from the negative conductor, as fast and regularly as it receives it, so that the positive will remain in its natural state, and the negative be exhausted more or less, as may happen. What has been already said, will, I pre¬ sume, render it tolerably evident, that this machine will either rarefy or condense, i. e. act either positively or negatively, without almost any additional trouble. TBf,