Specification of Julius Jeffreys : respirators.

  • Jeffreys, Julius, 1800-1877.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Julius Jeffreys : respirators. Source: Wellcome Collection.

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    Provisional Jeffreys Improvements in Instruments for Aiding Respiration. each layer (whether made of the above coiled fabric or otherwise), so as to allow the currents of the breath to escape with varying degrees of freedom between the wires. Where perforated metal plates are employed, I effect the object of varying the apertures, by causing the plates to slide over each other, so as to close or open the apertures. 5 Thirdly, in the form of respirator patented by me in 1850, in which the currents of breath are made to traverse longitudinally through the courses of metal, and parallel to their direction instead of transversely. I employ cylin¬ drical or flattened coils of wire, plain or twisted, and known as “ bullion, ” to form flexible tubular passages along the hollow spaces of which the currents 10 pass. SPECIFICATION in pursuance of the conditions of the Letters Patent, filed by the said Julius Jeffreys in the Great Seal Patent Office on the 18th October 1856. TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Julius 15 Jeffreys, of Kingston Hill, in the County of Surrey, send greeting. WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date the Eighteenth day of April, in the year of our Lord One thousand eight hundred and fifty-six, in the nineteenth year of Her reign, did, for Herself, Her heirs and successors, give and grant unto me, the 20 said Julius Jeffreys, Her special licence that I, the said Julius Jeffreys, my executors, administrators, and assigns, or such others as I, the said Julius Jeffreys, my executors, administrators, and assigns, should at any time agree with, and no others, from time to time and at all times thereafter during the term therein expressed, should and lawfully might make, use, exercise, 25 and vend, within the United Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for “ Improvements in Instruments for Aiding Respiration,” upon the condition (amongst others) that I, the said Julius Jeffreys, my executors or administrators, by an in¬ strument in writing under my, or their, or one of their hands and seals, 30 should particularly describe and ascertain the nature of the said Invention, and in what manner the same was to be performed, and cause the same to be filed in the Great Seal Patent Office within six calendar months next and immediately after the date of the said Letters Patent. NOW KNOW YE, that I, the said Julius Jeffreys, do hereby declare the 35 nature of the said Invention, and in what manner the same is to be per-