Specification of Charles Henwood : galvanic battery for medical purposes.

  • Henwood, Charles.
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Charles Henwood : galvanic battery for medical purposes. Source: Wellcome Collection.

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    Ilenwood's Improved Arrangement of Galvanic Battery for Medical Purposes. statement thereof, reference being had to the Drawings hereunto annexed, that is to say:— I take plates of copper and zinc or of two other metals, one electro-positive and the other electro-negative to the other, and combine and arrange such 5 plates in pairs and unite the pairs to form a chain or belt as hereafter explained. I will suppose copper and zinc to be the metals employed; I take a plate of copper, bend it at the centre, and fold one half down over the other half. I cut away small portions from the fold or part where one half is doubled over the other. I then place between the two halves of the copper plate a 10 plate of zinc covered with linen or other textile fabric to prevent contact between the plates. The zinc plate is equal in breadth to nearly one half of the breadth of the copper plate; it has two lugs, which project beyond the parts cut away from the fold in the copper plate. The opposite corners to the lugs in the zinc plate are cut off, and the zinc plate is held between the two 15 halves of the copper plate by two corners of the latter being turned in under the zinc plate; the two other corners of the copper plate have each a hole pierced therein, a hole is also made in the projecting zinc lugs, and metal rings being passed through the holes in the zinc lugs and copper corners unite every pair of plates. 20 Figure 1 of the Drawings hereunto annexed is a view of one of the copper plates preparatory to being folded; Figure 2 is a view of the zinc plate partially covered with cotton ; Figure 3 shews the copper and zinc plates fastened together; and Figure 4 is a view of two pairs of plates, shewing the manner in which they are connected together, a is the copper plate at or 25 about the centre b of which it is folded; c is the zinc plate, surrounded with cotton d, or it may be wholly covered with linen to prevent its coming into contact with the copper. This zinc plate c is formed with lugs e, e, which when the zinc plate is placed in the fold b of the copper plate protrude as shewn in the Figures; two of the corners of the plate a are folded over the 30 zinc plate, as shewn at Figures 3 and 4. Holes are formed in the lugs of the zinc and remaining corners of the copper plates, through which rings g, g, are passed to connect the plates together, as shewn at Figures 4 and 5. Figure 5 shews a number of pairs of plates connected together and fastened to a strap to form a belt for personal wear, h is a linen case for buttoning 35 over the plates to keep them from contact with the body where desired. At Figure 6 the belt is shewn with the cover buttoned over the plates. And having now described the nature of my said Invention, and in what manner the same is to be performed, I declare that I claim the forming of a