A quadruplet of inventions / [Thomas Northmore].

  • Northmore, Thomas, 1766-1851
Date:
[1799]
Catalogue details

Licence: Public Domain Mark

Credit: A quadruplet of inventions / [Thomas Northmore]. Source: Wellcome Collection.

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    * time the ballad may be detached from its float, and flung overboard. It may be objected to this contrivance, that it will not prevent a boat, which has a fail, from being overfet. But to this objection I reply; fird, that in a very heavy fea, or when the danger is immi¬ nent, the fail will probably be lowered; and fecondly, that at all events the boat will not fmk, and every one may have . > a chance of feizing one of the floats. But perhaps the obje&ion may be entirely overruled by dating, that as a boat can only overfet by the ballad falling to lee¬ ward, fo if the ballad be fixed down in its place, by means of a hook or other- ways, (in which cafe the floats may be removed to any more eligible fitu- ation) the whole veflel, with its mad and fail, will become a lever, of which its fide is the fulcrum, and as foon as it r • fills with water, will be redored to an upright pofition. Propofal